1
.ARRY PINA-^
THE MACINTOSH
BIBLE GUIDE
TO SAVING A FORTUNE
ON MAC REPAIRS
THE
DEAD
MAC
SCROLLS
HOW TO FIX HUNDREDS
OF HARDWARE PROBLEMS
WITHOUT GOING BANKRUPT
THE
DEAD
MAC
SCROLLS
THE MAC I NTOS H
BIBLE CUIDE TO
SAVING A FORTUNE
ON MAG REPAIRS
THE
DEAD
MAC
SCROLLS
HOWTO FIX HUNDREDS
OF HARDWARE PROBLEMS
WITHOUT CiOINO BANKRUPT
LARRY PINA
PEACHPIT PRESS
A GOLDSTEIN £. BLAIR BOOK
The Dead Mac Scrolls
Larry Pina
A Goldstein & Blair book
Peachpit Press, Inc.
241 4 Sixth Street
Berkeley, C A 94710
800/283-9444, 510/548-4393
Fax: 510/548-5991
Technical editing: lean Sorensen, Chuck Meyer
Copy-editing: Virginia Rich, )ohn Kadyk
Proofreading: John Kadyk, )an Brenner, Karen Faria
Word processing: Adam Pollock, |an Brenner
Index: Rohyn Brode Cover: Trevor Irvin
Inside design: A\rthur Nalman, Karen Faria Cover concept: Arthur Naiman
Page layout (using Nisus 3.06): Larry Pina, Karen Faria
Fonts: Optima (from Adobe), Utility City (from Dubl-Click)
Printing: Con.solidated Printers, Berkeley CA
Library of Congress Cataloging-in-Publication Data
Pina, Larry
The dead Mac scrolls : the Macintosh Bible guide to saving
a fortune on Mac repairs / Larry I’ina.
p. cm.
Includes index.
ISBN 0-940235-2.5-0 : $32.00
1 . Macintosh (Computer)-Malnlenance and repair I. Title
TK7889.M33P54 1992
621.39'16-dc20 91-42658
CIP
Copyright © 1992 by Larry Pina. All rights reserved.
No part of this book may be reprinted, or reproduced, or utilized in any form or by any
electronic, mechanical or other means, now known or hereafter invented, including
photocopying and recording, or in any information storage and retrieval system, without
prior permission in writing from the publisher.
printed in the United States of America
printing # 2 3 4 5 6 7 8 9
CONTENTS
Introduction 7
Guides for do-it-yourselfers 9
1 . Early Macs 1 1
1. Mac SE and SE/30 144
3. Mac II 221
4. Floppy disk drives 243
Problems and solutions 244
Replacing disk drive heads
without test instruments 265
5. Hard drives and other peripherals 277
6. External monitors 309
7. ImageWriter I (standard & wide) 348
8. ImageWriter II 374
9. LaserWriter and LaserWriter Plus 402
10. LaserWriter II SC, NT and NTX 442
Parts vendors and service providers 466
Symptom index 470
6
The Dead Mac Scrolls
Trademark notice
Because a major purpose of this book is to describe and
comment on various hardware and software products, many such
products are identified by their tradenames. In most — if not
all — cases, these designations are claimed as legally protected
trademarks by the companies that make the products. It is not our
intent to use any of these names generically, and the reader is
cautioned to investigate a claimed trademark before using it for any
purpose except to refer to the product to which it is attached.
In particular: Apple and Macintosh are registered trademarks of
Apple Computer, Inc. The Macintosh Bible is a trademark of
Goldstein & Blair, which is not affiliated with Apple Computer, Inc.
Disclaimer
We've got to make a disclaimer that common sense requires:
Although we've tried to check all the information in this book to
make sure it's accurate, we can't guarantee that it is.
We can't be — and aren't — responsible for any damage or loss to
your data or your equipment, or injury to yourself, that results
directly or indirectly from your use of this book. We make no
warranty, express or implied, about the contents of this book, its
merchantability or its fitness for any particular purpose. The
exclusion of implied warranties is not permitted by some states. The
above exclusion may not apply to you. This warranty provides you
specific legal rights. There may be other rights that you may have
which vary from state to state.
Introduction
7
Introduction
This book is like a family medical guide, except that it covers the
Macintosh family of computer equipment. Reading it won't grant
you a doctor's degree, but it will enable you to recognize common
symptoms and correctly diagnose hardware problems.
The purpose of this book is to save you money. By looking up
symptoms before you call for service, you can get a good idea of
what's wrong and how much repairs should cost.
How to use this book
Every page describes a unique symptom, with text and illustrations
(if you can't find the symptom you're looking for, check the
Symptom index at the back of the book). Then there's a diagnosis of
the problem (generally to the component level) and a suggested
solution. Finally, each page provides three different cost estimates
for effecting repairs:
The approximate cost of repairing it yourself assumes that you
have access to tools and test equipment and that you already have
the skills to use them. This applies to electronics instructors and
their students, electrical engineers and their students, and
independent service providers who've stayed away from Macintosh
because of the lack of reliable troubleshooting information.
The wholesale part prices quoted in this section were taken (in
no particular order) from the 1991 catalogs of the companies listed
under Parts vendors and service providers at the end of this book.
No attempt was made to find the lowest price; once I found the
part I was looking for, that's the price I used. Since they're wholesale
prices, there's often a minimum order quantity to get the price
quoted.
The approximate third-party repair cost estimates what you'd
pay for component-level repairs by an independent service
provider. (If you can't find one in your area, check the Parts vendors
and service providers list.)
The retail part prices quoted in this section are based on a
common trade practice: The minimum parts charge is usually $5
and beyond that, the shop charges twice its own cost.
The $65 hourly labor rate is based on the various classified
advertisements which run in the back of Mac magazines and
8
The Dead Mac Scrolls
occasionally in user group newsletters. Labor rates vary, though, and
you don't always get what you pay for.
The approximate dealer repair cost reflects the cost of module or
sub-assembly replacement. The prices quoted here were kindly
provided by a local Apple dealer. Since you're paying for a whole
new board or drive (instead of component-level repairs) dealer
repair costs are much more expensive than third-party shops'. Still,
sometimes it's worth spending the extra money.
For most people, the most cost-effective approach is to deal with
a third-party repair shop — one that's willing to make guaranteed
component-level repairs at a reasonable price. Dealing
knowledgeably with a qualified service provider (rather than placing
yourself at the mercy of an authorized board-swapper) is guaranteed
to save you money, and that's what this book is all about.
How this book differs from a service manual
Service manuals are usually written while the equipment is in the
design stage. This book, written after years of field experience, is
more like a collection of service bulletins. It doesn't include
schematics, complete parts lists and lengthy discussions of circuit
theory. Instead, it describes known circuit failures and reveals proven
solutions. And the material can be understood by anyone who
wants to save money on Mac repairs, not just repair technicians.
Since it takes years for real failure data to accumulate, the older
Macs are given the most coverage (because we know more about
them) and the newer Macs are given the least coverage (because
we know less about them). The Mac Classic and Classic II, the LC, llsi,
PowerBooks and Quadras aren't covered at all in this edition, since,
as this is being written, every one of those Macs ever sold is still
under warranty. Whatever failures they may have incurred have
been handled for free by Apple dealers. Even after their one-year
warranties expire, many of them will continue to be covered by
AppleCare.
Failure histories don't mean that equipment manufacturers make
inferior products; they make fine products, but nothing lasts forever.
People get ill, computer equipment breaks. The real problem is the
high cost of repairs — but with The Dead Mac Scrolls, costs can be
kept to a minimum. Even if you only refer to it once, it should save
you hundreds of dollars.
Guides for do-it-yourselfers
9
Guides for do-it-yourselfers
The Dead Mac Scrolls is a reference book, not a do-it-yourself
repair guide. While most people are interested in getting as much
as they can out of their computers, very few are interested in
becoming repair technicians. As long as we can get good service at
a fair price, most of us prefer to pay someone else to do the work.
If you take exception to that statement, you may enjoy one of my
other Macintosh repair books:
Macintosh Repair & Upgrade Secrets, 350 pages, published in
1990 under the Hayden label by Sams (now Macmillan) teaches
basic electronics (safety rules, how to solder, how to use test
equipment, etc.) as applied to the Macintosh. Written for
beginners, this book contains detailed take-apart instructions for the
Mac 128K, 51 2K, 512Ke, Plus and SE, the Lisa and the Mac XL.
Focusing primarily on analog board repairs and video adjustments, it
comes with black-and-white Test Pattern Generator software for
video alignment. The appendix includes a complete parts list for
Mac Plus and Mac SE power supplies. $32.95
Macintosh Printer Secrets, 450 pages, also published in 1990 under
the Hayden label, teaches introductory computer science in the
context of the ImageWriter printer. Written for beginners, it
contains detailed take-apart instructions for the ImageWriter I
(standard and wide models) and the ImageWriter II. It focuses
primarily on serial interface problems, mechanical repairs and
maintenance adjustments, and comes with Test Character
Generator printer-alignment software. $34.95
Macintosh II Repair and Upgrade Secrets, 250 pages, published in
1991 by Brady Publishing, teaches basic electronics as applied to a
Macintosh ll-and-monitor system. Written for beginners, this book
covers the ll/llx/llfx, the llcx/llci, llsi, the Apple High-Resolution
Monochrome monitor and AppleColor High-Resolution RGB
monitor. Devoted primarily to logic board repairs and video
adjustment instructions, it comes with Color Test Pattern Generator
video-alignment software. $39.95
LaserWriter Repair and Upgrade Secrets, 250 pages, (as yet
unpublished) will cover the LaserWriter, LaserWriter Plus, and the
LaserWriters lISC, IINT and lINTX. Primarily focusing on logic board
repairs, maintenance and step-by-step fuser repair instructions, it
10
The Dead Mac Scrolls
will come with Laser Test Character Generator diagnostic software.
The latest versions of Color Test Pattern Generator and Laser Test
Character Generator are also available from Goldstein & Blair on
the Dead Mac Scrolls Disk — see the end pages of this book.
Other Macintosh repair books to look for include:
Gene B. Williams' Chilton's Guide to Macintosh Repair and
Maintenance, 212 pages, published in 1986 by Chilton Book
Company. Written for beginners, this book covers the 128K and
51 2K Macs and the ImageWriter I. It explains how to take early
Macs apart and swap boards, is nicely illustrated and well worth
having. $1 2.50
Sams COMPUTERFACTS folder, product number CP8/08941 , 29
pages, published in 1985 by Howard W. Sams & Company. Written
for bench technicians, this file folder covers the ImageWriter I. It
contains a complete logic board schematic (with clearly-marked
reference voltages), a handy semiconductor cross-reference and a
comprehensive set of logic charts. Focusing primarily on logic board
repairs, this industry-standard package provides component-level
troubleshooting information not found in Macintosh Printer
Secrets. $24.95
Sams COMPUTERFACTS folder, product number CP27/09005, 37
pages, published in 1987 by Howard W. Sams & Company covers
the ImageWriter II. Written for bench technicians, this file folder
contains a complete logic board schematic (with clearly-marked
reference voltages), a handy semiconductor cross-reference and a
comprehensive set of logic charts. Focusing primarily on logic board
repairs, this industry-standard package provides component-level
troubleshooting information not found in Macintosh Printer
Secrets. $24.95
Finally, up-to-date parts and test equipment information can be
obtained by calling the vendors in the Parts vendors and service
providers list at the end of this book. Most of them offer free
quarterly catalogs, but it takes some time to get on the mailing list.
CHAPTER 1
EARLY MACS
12
The Dead Mac Scrolls
Symptoms: On startup, a herringbone pattern appears on the
display. Otherwise, the computer is usable.
Probable diagnosis: The problem is on the analog board.
Solution: Replace the flyback transformer (Apple part 157-0026-B)
at board reference T1 with a later type (157-0042-C).
Approximate cost of repairing it yourself:
$21.00
1 flyback transformer
21.00
1 hour
Approximate third-party repair cost:
$107.00
1 flyback transformer
42.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board
183.33
1 hour labor
70.00
Early Macs
13
Symptoms: An ozone (air-pollution/car exhaust) smell lingers about
the computer. Otherwise, it seems OK.
Probable diagnosis: The problem is on the analog board.
Solution: Replace the flyback transformer (Apple part 157-0026-B)
at board reference T1 with a later type (1 57-0042-C).
Approximate cost of repairing it yourself:
$21.00
1 flyback transformer
21.00
1 hour
Approximate third-party repair cost:
$107.00
1 flyback transformer
42.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 183.33
1 hour labor
70.00
14
The Dead Mac Scrolls
Symptoms: On startup, the computer momenfar/Vy makes a loud
whistle noise (like a teakettle). Otherwise, it seems OK.
Probable diagnosis: The problem is on the analog board.
Solution: Replace the tunable coil (marked Width) at board
reference L2 with a later type made of Litz wire.
~L2 \
Approximate cost of repairing it yourself:
$12.00
1 width coil
12.00
1 hour
Approximate third-party repair cost:
$89.00
1 width coil
24.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board
183.33
1 hour labor
70.00
Early Macs
15
Symptoms: Occasionally, the computer makes a high-pitched
whining noise (like a mosquito). Otherwise, it seems OK.
Probable diagnosis: The problem is on the analog board.
Solution: Replace the flyback transformer (Apple part 157-0026-B)
at board reference T1 with a later type (1 57-0042-C).
Approximate cost of repairing it yourself:
$21.00
1 flyback transformer
21.00
1 hour
Approximate third-party repair cost:
$107.00
1 flyback transformer
42.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 183.33
1 hour labor
70.00
I
16
The Dead Mac Scrolls
Symptoms: There is a normal startup bong, but the display is dark or
severely distorted. The computer makes a high-pitched whining
noise (like a mosquito). After a few minutes, there is a burning smell.
Probable diagnosis: The problem is on the analog board.
Solution: Replace the flyback transformer at board reference T1
and check/replace the BU406 transistor (horizontal output) at board
reference Q3 (may be burned). If possible, replace with a heavy-duty
BU406D transistor. '
Approximate cost of repairing it yourself:
$26.00
1 flyback transformer
21.00
1 hour
1 BU406D transistor
5.00
Approximate third-party repair cost:
$117.00
1 flyback transformer
42.00
1 BU406D transistor
10.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 183.33
1 hour labor
70.00
Early Macs
17
Symptoms: There is a normal startup bong, but the display is dark.
The computer makes a high-pitched whining noise (like a
mosquito). After a few minutes, there is a burning smell.
Probable diagnosis: The problem is on the analog board.
Solution: Replace the flyback transformer at board reference T1
and check/replace the BU406 transistor at board reference Q3.
Approximate cost of repairing it yourself:
$26.00
1 1 flyback transformer
21.00
1 hour
1 1 BU406D transistor
5.00
Approximate third-party repair cost:
$107.00
miscellaneous parts
42.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 183.33
1 hour labor
70.00
18
The Dead Mac Scrolls
Symptoms: There is no startup bong. The display is dark. A loud AC
hum is coming through the speaker. The internal 800K disk drive is
making an unusual vibration noise.
Probable diagnosis: The problem is on the analog board.
Solution: With the power off, check resistance across CR5. If the
reading indicates 44/45i2 (not 3.6K/°o), replace the flyback
transformer (Apple part 157-0026-B) at board reference Tl.
\
Approximate cost of repairing it yourself:
$21.00
1 flyback transformer
21.00
1 hour
Approximate third-party repair cost:
$107.00
1 flyback transformer
42.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 183.33
1 hour labor
70.00
Early Macs
19
Symptoms: There's no startup bong. There's no video. The display is
dark. The computer makes a very loud screeching noise.
Probable diagnosis: The problem is on the analog board.
Solution: With the power off, check resistance across CR5. If the
reading indicates 44/45£^ (not 3.6K/<»), replace the flyback
transformer (Apple part# 157-0026-B) at board reference T1.
\
Approximate cost of repairing it yourself:
$21.00
1 flyback transformer
21.00
1 hour
Approximate third-party repair cost:
$107.00
1 flyback transformer
42.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 1
83.33
1 hour labor
70.00
20
The Dead Mac Scrolls
Symptoms: There's no startup bong. The display is dark. The
computer makes a dreadful groaning noise.
Probable diagnosis: The problem is on the analog board.
Solution: With the power off, check in-circuit resistance across CR5.
If the reading indicates 44/45Q (not 3.6K/oo), replace the flyback
transformer (Apple part 157-0026-B) at board reference T1. If the
reading is normal (3.6K/<»), see the next entry.
Approximate cost of repairing it yourself:
1 flyback transformer
21.00
$21.00
1 hour
Approximate third-party repair cost:
1 flyback transformer
1 hour labor
42.00
65.00
$107.00
Approximate dealer repair cost:
1 new analog board
1 hour labor
183.33
70.00
$253.33
Early Macs
21
Symptoms: The Mac does absolutely nothing. There is no startup
bong. There are no unusual noises. The display is dark.
Probable diagnosis: The problem is on the analog board.
Solution: With the power off, check the in-circuit resistance across
CR5. If the reading indicates 1 1/1 2Q (not 3.6K/«>), replace the
flyback transformer (Apple part 157-0026-B) at board reference T1.
If the resistance across CR5 is normal (3.6K/o<>), see the next entry.
Approximate cost of repairing it yourself:
$21.00
1 flyback transformer
21.00
1 hour
Approximate third-party repair cost:
$107.00
1 flyback transformer
42.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board
183.33
1 hour labor
70.00
22
The Dead Mac Scrolls
Symptoms: The Mac does absolutely nothing. There is no startup
bong. There are no unusual noises. The display is dark.
Typical history: The resistance across CR5 suggests that the flyback
transformer at board reference T1 is fine.
Probable diagnosis: The problem is on the analog board.
Solution: With the power off, check the in-circuit resistance across
CR21 (IR31DQ, R-Schottky Barrier, 40V, 6A). If the reading
indicates OQ/OQ (not 52Q/53Q), replace CR21 with a heavy-duty
MBR360 rectifier. If the in-circuit reading is normal (52Q/53Q), see
the next entry.
Approximate cost of repairing it yourself:
$5.00
1 MBR360 Schottky rectifier
5.00
1 hour
Approximate third-party repair cost:
$75.00
1 MBR360 Schottky rectifier
10.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 183.33
1 hour labor
70.00
Early Macs
23
Symptoms: The Mac does absolutely nothing. There is no startup
bong. There are no unusual noises. The display is dark.
Typical history: The resistance across CR5 suggests that the flyback
transformer at board reference Tl is fine. The resistance across
CR21 suggests that CR21 is fine.
Probable diagnosis: The problem is on the analog board.
Solution: Check/replace resistor R46 (22Q, 1W, 5%); resistors R47,
R49 and R50 (1 .5Q, y4-vvatt, 5%); transistor Q9 (2N3906); silicon
controlled rectifier QIO (CR400Y), Q1 1, FUl and other small parts
in the switching power supply at the bottom of the analog board.
I \
Q10R46-50
Approximate cost of repairing it yourself:
$24.00
miscellaneous parts
24.00
1 hour
Approximate third-party repair cost:
$113.00
miscellaneous parts
48.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 1
83.33
1 hour labor
70.00
24
The Dead Mac Scrolls
Symptoms: On powerup, the computer makes a flup flap flap
noise. There's no bong. The display is dark. The computer is
unusable.
Typical history: The problem occurred out of the blue, not right
after upgrade or service work.
Probable diagnosis: The problem is on the analog board.
Solution: With the power off, check the in-circuit resistance across
the barrel rectifier at board reference CR20 (IR31DQ, R-Schottky
Barrier, 40V, 6A). If the reading indicates OQ/OQ (not 31Q/30Q),
replace CR20 with a heavy-duty MBR1045 (TO-220) rectifier. If the
reading is normal (31Q/30Q), see the next entry.
\
0
CR20
Approximate cost of repairing it yourself:
$5.00
1 MBR1045 Schottky rectifier
5.00
1 hour
Approximate third-party repair cost:
$75.00
1 MBR1045 Schottky rectifier
10.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board
183.33
1 hour labor
70.00
Early Macs
25
Symptoms: On powerup, the computer makes a flap flap flup
noise. There's no bong. The display is dark. The computer is
unusable.
Typical history: The problem occurred out of the blue, not shortly
after installation of a memory upgrade. The in-circuit resistance
across CR20 suggests that CR20 is OK.
Probable diagnosis: The problem is on the analog board.
Solution: Check/replace leaky electrolytic capacitors C24 and C29
(2,200p, lOV) and also C25, C26 and C31 (l,000p, lOV).
\
C25
C24 C26
C29 C31
Approximate cost of repairing it yourself:
$3.00
1 electrolytic capacitor
3.00
1 hour
Approximate third-party repair cost:
$71.00
1 electrolytic capacitor
6.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 1
83.33
1 hour labor
70.00
26
The Dead Mac Scrolls
Symptoms: There's no startup bong. The computer makes a low-
pitched flup flap flap noise. The display is dark.
Typical history: The problem occurred after completion of
upgrade or service work (right after you put everything back
together).
Probable diagnosis: The power/video cable is disconnected.
Solution: Check/reconnect both ends of the power/video cable. If
that's not it, check the blue wire (pin 6 to pin 6) for continuity. If that
doesn't do it, see the next entry.
Approximate cost of repairing it yourself:
15 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$253.33
1 new analog board 183.33
1 hour labor 70.00
Early Macs
27
Symptoms: There's no startup bong. The computer makes a low-
pitched flap flap flup noise. The display is dark.
Typical history: The problem occurred after completion of
upgrade or service work (right after you put everything back
together).
Probable diagnosis: The analog board is out of adjustment. The
voltage is too high.
Solution: Turn variable resistor R56 (labeled Vo/fage) fully
counterclockwise. Restart the computer and adjust R56 for 5.0V
DC as measured from pin 6 of the power video cable to chassis
ground. Also see the prior entry.
Voltage
Approximate cost of repairing it yourself:
75 min.
Approximate third-party repair cost:
$65.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 183.33
1 hour labor
70.00
28
The Dead Mac Scrolls
Symptoms: An upgraded 51 2Ke works fine, but once it heats up, it
can't be shut down and restarted. When you try a hot restart, there's
no bong, and the Mac makes a flap flap flap noise. If you let the
Mac cool down overnight, it restarts normally the next morning and
works fine until the next time you try a hot restart.
Typical history: The problem occurred shortly after installing a
Dove/MaeSnap 524 or 548 memory upgrade.
Probable diagnosis: The problem is on the analog board.
Solution: Replace the OEM barrel rectifier at board reference CR21
(IR31DQ, R-Schottky Barrier, 40V, 6A) with a heavy-duty MBR 360
(TO-220) rectifier.
Approximate cost of repairing it yourself:
$5.00
1 MBR 360 Schottky rectifier
5.00
1 hour
Approximate third-party repair cost:
$75.00
1 MBR 360 Schottky rectifier
10.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board
183.33
1 hour labor
70.00
Early Macs
29
Symptoms: On powerup, the computer makes a bong... flop,
bong... flap noise. The display never comes up. The computer is
unusable.
Probable diagnosis: The problem is on the analog board.
Solution: Replace the silicon rectifier (1N4001, R-SI, 600V, 1A) at
board reference CR29.
CR29
Approximate cost of repairing it yourself:
25(?
1 1N4001 silicon rectifier
.25
1 hour
Approximate third-party repair cost:
$70.00
1 1 N4001 rectifier
5.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 183.33
1 hour labor
70.00
30
The Dead Mac Scrolls
Symptoms: The right side of the display wiggles (like a worm). The
center wiggles less. The left side is fairly stable.
Typical history: At some point, the flyback transformer on this
computer was replaced, but the BU406 (horizontal-output)
transistor was not replaced, even though there was evidence of
overheating on the heat sink.
Probable diagnosis: The problem is on the analog board.
Solution: Replace the BU406 transistor (horizontal output) at board
reference Q3. Also see the next entry.
Q3
Approximate cost of repairing it yourself:
$5.00
1 BU406D transistor
5.00
1 hour
Approximate third-party repair cost:
$75.00
1 BU406D transistor
10.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 183.33
1 hour labor
70.00
Early Macs
31
Symptoms: The right side of the display wiggles (like a worm). There
is a loud sizzling noise.
Typical history: The sizzling started right after the analog board was
replaced.
Probable diagnosis: The problem is a bad ground.
Solution: Check for the presence of a grounding plate. Tighten the
two grounding plate screws and verify that the ground wire is
connected to the chassis. Also see the prior entry.
wire
/ plate
Approximate cost of repairing it yourself:
15 min.
Approximate third-party repair cost:
$65.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 1
83.33
1 hour labor
70.00
32
The Dead Mac Scrolls
Symptoms; The display is vertically compressed. It lacks height.
Typical history: The symptoms appeared out of the blue (not
gradually, not immediately after the computer was board-swapped).
Probable diagnosis: The problem is on the analog board.
Solution: Replace the zener diode (IN5234B, ZD, 6.2V, Yz-watt) at
board reference CR15. Also see the next entry.
\
CR15
Approximate cost of repairing it yourself:
$6.00
1 1N5234B zener diode
6.00
1 hour
Approximate third-party repair cost:
$77.00
1 IN5234B zener diode
12.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board
183.33
1 hour labor
70.00
Early Macs
33
Symptoms: The display is vertically compressed. It lacks height.
Typical history: The symptoms appeared immediately after the
computer was board-swapped (not out of the blue).
Probable diagnosis: The new analog board is out of adjustment.
Solution: Adjust variable resistor R55 (labeled Height) until the
display measures 4.75 inches high. If that doesn't do it, see the prior
entry.
Height
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$65.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 183.33
1 hour labor
70.00
34
The Dead Mac Scrolls
Symptoms: The display is horizontally compressed. It lacks width.
Typical history: The symptoms appeared immediately after the
computer was board-swapped (not out of the blue).
Probable diagnosis: The new analog board is out of adjustment.
Solution: Adjust tunable coil L2 (labeled Width) until the display
measures 7.1 1 inches (approximately zVe inches) wide.
Width
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$253.33
1 new analog board 183.33
1 hour labor 70.00
Early Macs
35
Symptoms: The display is horizontally expanded. It's too wide.
Typical history: The symptoms appeared immediately after the
computer was board-swapped (not out of the blue).
Probable diagnosis: The new analog board is out of adjustment.
Solution: Adjust tunable coil L2 (labeled Width) until the display
measures 7.1 1 inches (approximately lV% inches) wide.
Width
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$65.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 1
83.33
1 hour labor
70.00
36
' The Dead Mac Scrolls
Symptoms: The bottom of the display shakes (moves rapidly up and
down) during a disk drive event or whenever a window is opened.
Probable diagnosis: The problem is on the analog board.
Solution: Replace the zener diode (IN5234B, ZD, 6.2V, V2-watt) at
board reference CR15 on the analog board.
\
CR15
Approximate cost of repairing it yourself:
$6.00
1 IN5234B zener diode
6.00
1 hour
Approximate third-party repair cost:
$77.00
1 IN5234B zener diode
12.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 183.33
1 hour labor
70.00
Early Macs
37
Symptoms: The right side of the display moves in and out during a
disk drive event or w'henever a window is opened.
Probable diagnosis: The problem is on the analog board.
Solution: Replace the barrel rectifier (GI854, R-SI, 600V, 3A) at
board reference CR5 on the analog board. Use a heavy-duty
replacement part (MR824, R-SI, 400V, 5A) to avoid future repairs. If
that doesn't do it, see the next entry.
Approximate cost of repairing it yourself:
$5.00
1 MR824 rectifier
5.00
1 hour
Approximate third-party repair cost:
$75.00
1 MR824 rectifier
10.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 1
83.33
1 hour labor
70.00
38
The Dead Mac Scrolls
Symptoms: Even after CR5 has been replaced, the right side of the
display moves in and out during a disk drive event or whenever a
window is opened.
Probable diagnosis: The problem is on the analog board.
Solution: Replace the horizontal output transistor (BU406) at board
reference Q3. Also see the prior entry.
Q3
Approximate cost of repairing it yourself:
$5.00
1 BU406D transistor
5.00
1 hour
Approximate third-party repair cost:
$75.00
1 PU406D transistor
10.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board
183.33
1 hour labor
70.00
Early Macs
39
Symptoms: There is no startup bong. The display is blank. The
computer makes a high-pitched chirp chirp chirp noise.
Typical history: The right side of the display used to move in and
out whenever a window was opened.
Probable diagnosis: The problem is on the analog board.
Solution: Replace the barrel rectifier (GI854, R-SI, 600V, 3A) at
board reference CR5 on the analog board. Use a heavy-duty
replacement part (MR824, R-SI, 400V, 5A) to avoid future repairs.
CR5 (0 \
Approximate cost of repairing it yourself:
$5.00
1 MR824 rectifier
5.00
1 hour
Approximate third-party repair cost:
$75.00
1 MR824 rectifier
10.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 1
83.33
1 hour labor
70.00
40
The Dead Mac Scrolls
Symptoms: There is no startup bong. The display is blank. The
computer appears to be completely dead.
Typical history: just before it died, the display went black and the
computer made a high-pitched chirp chirp chirp noise. Prior to that,
the right side of the display used to move in and out whenever a
window was opened.
Probable diagnosis: The problem is on the analog board.
Solution: Replace the barrel rectifier (GI854, R-SI, 600V, 3A) at
board reference CR5 on the analog board. Use a heavy-duty
replacement part (MR824, R-SI, 400V, 5A) to avoid future repairs.
Also replace the horizontal output transistor (BU406) at board
reference Q3.
Approximate cost of repairing it yourself:
$10,00
1 MR824 rectifier
5.00
1 hour
1 BU406D transistor
5.00
Approximate third-party repair cost:
$85.00
1 MR824 rectifier
10.00
1 BU406D transistor
10.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board
183.33
1 hour labor
70.00
Early Macs
41
Symptoms: The display intermittently blinks out (goes to solid
black). White lines intermittently flash across the display. Tapping on
the cabinet temporarily restores the display.
Probable diagnosis: The problem is a cracked solder joint on the
analog board.
Solution: Check/resolder pin 1 (composite video) of the ]4
connector.
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$65.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 1
83.33
I 1 hour labor
70.00
42
The Dead Mac Scrolls
Symptoms: The normal startup bong is present, but the display
never comes up (remains solid black). Adjusting the front-panel
brightness control does nothing. Tapping on the cabinet causes
white lines to flash across the dis|:)lay.
Probable diagnosis: The problem is a cracked solder joint on the
analog board.
Solution: Check/resolder pin 1 (composite video) of the J4
connector.
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$253.33
1 new analog board 183.33
1 hour labor 70.00
Early Macs
43
Symptoms: There are two flashing, horizontal interference lines on
the display. One is about one third of the way down. The other is
about two thirds of the way down. Tapping on the cabinet causes
the lines to jitter, but they never (or almost never) go away.
Probable diagnosis: The problem is a cracked solder joint on the
analog board.
Solution: Check/resolder pin 1 (composite video) of the ]4
connector.
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$65.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 1
83.33
1 hour labor
70.00
44
The Dead Mac Scrolls
Symptoms: The video display exhibits poor linearity. Items on the
left are wider than items on the right.
Probable diagnosis: The problem is on the analog board.
Solution: Replace high-frequency capacitor Cl (3.9p NP 25/35V
HF) in the horizontal sweep circuit. Use a heavy-duty replacement
part (3.9p NP lOOV HF) to avoid future repairs.
~ \
Approximate cost of repairing it yourself:
$3.00
1 3. 9ii NP lOOV HF capacitor
3.00
1 hour
Approximate third-party repair cost:
$70.00
1 3.9p NP 100V HF capacitor
5.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board
183.33
1 hour labor
70.00
Early Macs
45
Symptoms: A few minutes after startup, relatively bright diagonal
lines appear on the display. If the power isn't switched off, the
display gets darker and darker and the Mac begins to smoke.
Typical history: Prior to this, the display exhibited poor linearity.
Probable diagnosis: The problem is on the analog board.
Solution: Replace high-frequency capacitor Cl (3.9)i NP 25/35V
HF). Use a heavy-duty replacement part (3.9p NP lOOV HF) to avoid
future repairs. Also check/replace yoke plug J1 (may be burned).
"ci \
Ji
Approximate cost of repairing it yourself:
$3.00
1 3.9)1 NP 100V HF capacitor
3.00
1 hour
Approximate third-party repair cost:
$70.00
1 3. 9|li NP 100V HF capacitor
5.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 183.33
1 hour labor
70.00
46
The Dead Mac Scrolls
Symptoms: On startup, the computer bongs, but the normal video
display does not appear. Instead there is a relatively bright vert\ca\
line. If the power isn't switched off, the Mac begins to smoke.
Probable diagnosis: The problem is on the analog board.
Solution: Replace high-frequency capacitor Cl (3.9p NP 25/35V
HF). Use a heavy-duty replacement part (3.9|.i NP 100V HF) to avoid
future repairs. Also check/replace yoke plug j1 (may be burned).
\
II
Approximate cost of repairing it yourself:
$3.00
1 3.9p NP lOOV HF capacitor
3.00
1 hour
Approximate third-party repair cost:
$70.00
1 3.9p NP 100V HF capacitor
5.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 183.33
1 hour labor
70.00
Early Macs
47
Symptoms: On startup, the computer bongs, but the normal video
display does not appear. Instead there is a relatively dim vertical
line. If the power isn't switched off, the Mac begins to smoke.
Probable diagnosis: The problem is on the analog board.
Solution: Check/replace burned resistor R1 [2200., y4-watt, 5%). To
avoid immediate recurrence, vacuum-desolder linearity coil LI. Use
100% fresh solder (don't add solder; don't just reheat the joint).
LI R1 \
Approximate cost of repairing it yourself:
1 220Q, 74-watt, 5% resistor
.09
1 hour
Approximate third-party repair cost:
$70.00
1 2200., 74-watt, 5% resistor
5.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 1
83.33
1 hour labor
70.00
48
The Dead Mac Scrolls
Symptoms: After a short while, the video display collapses to a
relatively bright vertical line. Tapping on the left side of the cabinet
temporarily restores the full display or causes it to flash.
Probable diagnosis: The problem is a cracked solder joint on the
analog board. The cracked joint may be covered by a foam pad.
Solution: Check/resolder pin 4 (top, horizontal yoke) of the J1
connector and check/resolder tunable coil L2 (marked width).
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$65.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 1
83.33
1 hour labor
70.00
Early Macs
49
Symptoms: After a short while, the video display collapses to a
horizontal line. Or, the picture rolls from top to bottom, then
collapses to a horizontal line. Tapping on the left side of the cabinet
temporarily restores the full display or causes it to flash.
Probable diagnosis: The problem is a cracked solder joint on the
analog board. The cracked joint may be covered by a foam pad.
Solution: Check/resolder pin 1 (bottom, vertical yoke) of the j1
connector, pin 5 of the ]4 connector, and check/resolder C5 (47)j,
10V). Also see the next entry.
14
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$65.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 183.33
1 hour labor
70.00
50
The Dead Mac Scrolls
Symptoms: On startup, the computer bongs, but the video display
does not appear. Instead there is a relatively bright horizontal line. If
the power isn't switched off, the Mac begins to smoke.
Probable diagnosis: The problem is on the analog board.
Solution: Check/replace burned transistor Q4 (2N4401), shorted
transistor Q2 (MPSU51), open resistor R3 (1.5Q, ^4-watt, 5%), zener
diode CR15 (IN4735, ZD, 6.2V 14-watt) and other obviously burned
parts in the vertical sweep circuit. Also see the prior entry.
"q2 \
R3
Q4
Approximate cost of repairing it yourself:
$5.00
miscellaneous small parts
5.00
1 hour
Approximate third-party repair cost:
$75.00
miscellaneous small parts
10.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 183.33
1 hour labor
70.00
Early Macs
51
Symptoms: On startup, the computer bongs, but the normal video
display does not appear. Instead, there is a tiny gray area, a relatively
bright horizontal line and then three dotted horizontal lines. The
bright horizontal line is flashing, and the cursor is just visible.
Probable diagnosis: The problem is on the analog board.
Solution: Check/replace field effect transistor Q5 (2N5485) in the
vertical sweep circuit. Also see the prior entry.
\
Q5
Approximate cost of repairing it yourself:
79it
1 2N5485 transistor
.79
1 hour
Approximate third-party repair cost:
$70.00
1 2N5485 transistor
5.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 183.33
1 hour labor
70.00
52
The Dead Mac Scrolls
Symptoms: The video display is much too bright. Scan lines are
visible even when the brightness control is turned down. Other than
that, the computer is usable.
Typical history: The symptoms appeared out of the blue (not
immediately after tbe computer was board-swapped).
Probable diagnosis: The problem is on the analog board.
Solution: Check/replace resistor R5 (470K, V4-watt, 5%).
Approximate cost of repairing it yourself:
10(
1 470K, Vi-watt, 5% resistor
.10
1 hour
Approximate third-party repair cost:
$70.00
1 470K, V4-watt, 5% resistor
5.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board
183.33
1 hour labor
70.00
Early Macs
53
Symptoms: The video display is much loo bright. Scan lines are
visible even when the brightness control is turned down. Otherwise,
the computer is usable.
Typical history: The symptoms appeared immediately after the
computer was board-swapped (not out of the blue).
Probable diagnosis: The new analog board is out of adjustment.
Solution: Adjust variable resistor R53 (labeled Cut-off) until the scan
lines disappear.
Cut-off
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$65.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 183.33
1 hour labor
70.00
54
The Dead Mac Scrolls
Symptoms: There is raster but no video display (no desktop). The
raster is very bright. Horizontal scan lines are visible. The computer
isn't usable (because there's no desktop).
Probable diagnosis: The problem is on the analog board.
Solution: Replace the SN74LS38N chip (14-pin DIP, quad 2-input
NAND) at board reference U2.
Approximate cost of repairing it yourself:
35(t
1 SN74LS38N chip
.35
1 hour
Approximate third-party repair cost:
$70.00
1 SN74LS38N chip
5.00
1 hour labor
65,00
Approximate dealer repair cost:
$253.33
1 new analog board 1
183.33
1 hour labor
70.00
Early Macs
55
Symptoms: The top half of the video display is somewhat squashed.
There's a bright white line in the middle. The bottom half of the
display is black.
Probable diagnosis: The problem is on the analog board.
Solution: Check/replace resistor R3 (1 .5Q, 14-watt, 5%) and
transistor Q1 (MPS U01) in the vertical sweep circuit.
Q1
R1
Approximate cost of repairing it yourself:
$1.29
1 1 .5Q, 14-watt, 5% resistor
.10
1 hour
1 MPS UOl transistor
1.19
Approximate third-party repair cost:
$75.00
2 miscellaneous parts
10.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 1
83.33
1 hour labor
70.00
56
The Dead Mac Scrolls
Symptoms: The bottom half of the video display is somewhat
squashed. There's a bright white line in the middle. The top half of
the display is black.
Probable diagnosis: The problem is on the analog board.
Solution: Check/replace resistor R2 (1.5Q, y4-watt, 5%) and
transistor Q2 (MPS U51) in the vertical sweep circuit.
Approximate cost of repairing it yourself:
$1.29
1 1 .5Q, yt-watt, 5% resistor
.10
1 hour
1 MPS U51 transistor
1.19
Approximate third-party repair cost:
$75.00
2 miscellaneous parts
10.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 183.33
1 hour labor
70.00
Early Macs
57
Symptoms: The bottom half of the video display is so elongated that
it disappears underneath the cabinet. Adjusting the Height control
affects the top half of the display but doesn't affect the bottom.
Probable diagnosis: The problem is on the analog board.
Solution: Replace the LM324 chip (14-pin DIP, LP, quad op amp) at
board reference Ul.
Approximate cost of repairing it yourself:
39it
1 LM324 chip
.39
1 hour
Approximate third-party repair cost:
$70.00
1 LM324chip
5.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 1 83.33
1 hour labor
70.00
58
The Dead Mac Scrolls
Symptoms: The top half of the video display is so elongated that it
disappears underneath the cabinet. Adjusting the Height control
affects the bottom half of the display but doesn't affect the top.
Probable diagnosis: The problem is on the analog board.
Solution: Replace the LM324 chip (14-pin DIP, LP, quad op amp) at
board reference U1.
\
ui
Approximate cost of repairing it yourself:
39^
1 LM324chip
.39
1 hour
Approximate third-party repair cost:
$70.00
1 LM324 chip
5.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 1
83.33
1 hour labor
70.00
Early Macs
59
Symptoms: There is no startup bong. The raster shows tightly
spaced horizontal lines. There is no desktop. The computer is
unusable.
Typical history: The problem occurred out of the blue and
spontaneously, not right after installing a programmer's switch.
Probable diagnosis: The problem is on the analog board.
Solution: Replace the SN74LS38N chip (14-pin DIP, quad 2-input
NAND) at board reference U2.
Approximate cost of repairing it yourself:
35it
1 SN74LS38N chip
.35
1 hour
Approximate third-party repair cost:
$70.00
1 SN74LS38N chip
5.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 1
83.33
1 hour labor
70.00
60
The Dead Mac Scrolls
Symptoms: On a Mac Plus there is no startup bong. The raster
shows tightly spaced horizontal lines and is peppered with random
dots. There is no desktop. The computer is unusable.
Typical history: The problem occurred when a programmer's
switch was installed.
Probable diagnosis: The reset lever on the programmer's switch is
making contact with the reset button on the logic board.
Solution: Check/reposition the programmer's switch. If necessary,
trim and shorten the shafts.
Programmer's
switch
Approximate cost of repairing it yourself:
15 min.
Approximate third-party repair cost:
1 hour labor
65.00
$ 65.00
Approximate dealer repair cost:
1 new logic board (Plus)
1 hour labor
$ 445.00
375.00
70.00
Early Macs
67
Symptoms: On a Macintosh 128K, 51 2K or 512Ke, there is no
startup bong. The display is laced with vertical lines and filled with a
black-and-white checkerboard pattern.
Typical history: The problem occurred when a programmer's
switch was installed.
Probable diagnosis: The reset lever on the programmer's switch is
making contact with the reset button on the logic board.
Solution: Check/reposition the programmer's switch. If necessary,
trim and shorten the shafts.
/ fl
Programmer's
switch
Approximate cost of repairing it yourself:
75 min.
Approximate third-party repair cost:
$65.00
1 hour labor
65.00
Approximate dealer repair cost:
$358.33
1 new logic board (51 2K) 288.33
1 hour labor
70.00
62
The Dead Mac Scrolls
Symptoms: On a Mac 512Ke, there is no startup bong. The display
is filled with a' black-and-white checkerboard pattern.
Typical history: The 512Ke has a SuperMac Enhance upgrade.
Probable diagnosis: The problem is in the processor clip.
Solution: For a temporary fix, detach and fold back the Enhance
board, reseat the processor clip at location E5 to E8 on the 512Ke
logic board and insulate the clip top with foam tape. For a
permanent fix, replace the clip with a 64-pin (solder-type) header.
A
B
C
D
E
F
G
Approximate cost of repairing it yourself:
$5.00
1 64-pin solder-type header
5.00
+ 8 hours
Approximate third-party repair cost:
$270.00
1 64-pin header
10.00
4 hours labor
260.00
Approximate dealer repair cost:
$1,210.00
1 51 2Ke to Mac Plus upgrade
770.00
1 2Mb RAM upgrade
440.00
Early Macs
63
Symptoms: On a Mac 512Ke, there is no startup bong. The display
is filled with a black-and-white checkerboard pattern.
Typical history: The 512Ke has a Levco MonsterMac upgrade.
Probable diagnosis: The problem is in the wiring harness.
Solution: For a temporary fix, reseat the wire between C24 and R32
at board location D2 to E2 on the Macintosh logic board. For a
permanent fix, solder the wire in place. If that doesn't do it, see the
next entry.
in nMn.ni
A
/ C24 \ C
1 ® / E
G
F=^
}
Approximate cost of repairing it yourself:
1 hour
Approximate third-party repair cost:
$130.00
2 hours labor
130.00
Approximate dealer repair cost:
$1,210.00
1 512Ke to Mac Plus upgrade
770.00
1 2Mb RAM upgrade
440.00
64
The Dead Mac Scrolls
Symptoms: On a Mac 512Ke, there is no startup bong. The display
is filled with a black-and-white checkerboard pattern.
Typical history: The 512Ke has a Levco MonsterMac upgrade.
Probable diagnosis: One of the pin headers isn't making contact.
Solution: For a temporary fix, reseat the boards at location E5 to E8
on the 512Ke logic board. For a permanent fix, replace the OEM
pin headers with two 64-pin 1C sockets. Reconnect the two boards
with a 64-pin socket header.
Approximate cost of repairing it yourself:
$9.00
miscellaneous parts
9.00
8 hours
Approximate tbird-party repair cost:
$278.00
miscellaneous parts
18.00
4 hours labor
260.00
Approximate dealer repair cost:
$1,210.00
1 512Ke to Mac Plus upgrade
770.00
1 2Mb RAM upgrade
440.00
Early Macs
65
Symptoms: There is no startup bong. The display is filled with
alternating white-and-black vertical bars.
Typical history: The problem occurred right after a disk drive/ROM
upgrade or a SCSI upgrade (right after you put everything back
together).
Probable diagnosis: The problem is on the 51 2K logic board.
Solution: Verify that the ROM chips at board locations D6 and D8
are not reversed, backwards or otherwise incorrectly installed.
A
B
C
D
E
F
G
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$130.00
2 hours labor 1 30.00
Approximate dealer repair cost:
$358.33
1 new logic board (51 2 K) 288.33
1 hour labor 70.00
66
The Dead Mac Scrolls
Symptoms: On startup, you get a frozen floppy disk icon and a raster
the size of a postage-stamp. The computer is unusable.
Typical history: The Macintosh is/was an upgraded 51 2K or 512Ke.
The problem began immediately after a Dove/MacSnap 524 or 548
memory board was removed (pried up with a screwdriver).
Probable diagnosis: The problem is on the 512Ke logic board.
Solution: Check for and repair damaged circuit traces near the
74LS244 chips at board locations El 2 and El 3.
A
B
C
D
E
F
G
11
--IZJ
12
Approximate cost of repairing it yourself:
2 hours
Approximate third-party repair cost:
$130.00
2 hours labor 1 30.00
Approximate dealer repair cost:
$358.33
1 new logic board (512 K) 288.33
1 hour labor 70.00
Early Macs
67
Symptoms: There are consistent (repeatable) system errors that do
not occur (cannot be repeated) on other Macs. The logic levels on
the 74F253 chip (16-pin DIP, dual 4-input multiplexer, tri-state) at
board location G13 are wrong.
Typical history: The Macintosh is/was an upgraded 51 2K or 512Ke.
The problem began immediately after a Dove/MacSnap 524 or 548
memory board was removed (pried up with a screwdriver).
Probable diagnosis: The problem is on the 51 2K or 512Ke logic
board. Most likely, circuit traces were cut by the screwdriver tip.
Solution: Check for and repair damaged circuit traces near the
41-256 DRAM chip at location G5.
Approximate cost of repairing it yourself:
2 hours
Approximate third-party repair cost:
$130.00
2 hours labor 1 30.00
Approximate dealer repair cost:
$358.33
1 new logic board (51 2K) 288.33
1 hour labor 70.00
68
The Dead Mac Scrolls
Symptoms: There are consistent (repeatable) system errors that do
not occur (cannot be repeated) on other Macs.
Typical history: The original 128K Macintosh has received an 800K
DD/ROM upgrade and a Mac Plus or other logic board upgrade.
Probable diagnosis: The problem is on the original analog board
(which has not been upgraded). The voltage is too low.
Solution: While measuring from pin 6 of the power/video cable to
ground, adjust variable resistor R56 (labeled Voltage) ior 5.0V DC. If
the power supply won't go that high, see the next entry.
Voltage
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$65.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board
183.33
1 hour labor
70.00
Early Macs
69
Symptoms: There are consistent (repeatable) system errors that do
not occur (cannot be repeated) on other Macs.
Typical history: The original 128K Macintosh has received an 800K
DD/ROM upgrade and a Mac Plus or other logic board upgrade.
The analog board can no longer produce 5.0V DC.
Probable diagnosis: The problem is on the original analog board
(which has not been upgraded). The voltage is too low.
Solution: Check/replace the overvoltage reference diode
(1N5349B, ZD, 12V, 5W) at board reference CR18 on the analog
board. Also see the prior entry.
■X
CR
18
Approximate cost of repairing it yourself:
$6.00
1 1N5349B zener diode
6.00
+ 1 hour
Approximate third-party repair cost:
$71.00
1 1N5349B zener diode
6.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 1
83.33
1 hour labor
70.00
70
The Dead Mac Scrolls
Symptoms: A simple beep sound is OK, but right after a complex
sound (boing, clank, monkey, etc.) the mouse pointer jumps, then it
freezes and the Mac Plus locks up.
Probable diagnosis: The problem is on the Mac Plus logic board.
Solution: Replace the 6522-02PC chip (40-pin DIP, versatile
interface adapter) at location Dll.
Approximate cost of repairing it yourself:
$6.00
1 6522-02PC VIA chip
6.00
2 hours
Approximate third-party repair cost:
$142.00
1 6522-02PC VIA chip
12.00
2 hours labor
130.00
Approximate dealer repair cost:
$445.00
1 new logic board (Plus)
375.00
1 hour labor
70.00
Early Macs
71
Symptoms: On startup, a Mac128K, 51 2K, 512Ke resets several
times any ImageWriter II directly connected to the printer port. The
first time you try to print you get a. dialog box stating: The printer is
not responding, but subsequent tries made during the same
computer session work fine. If the same ImageWriter II is
reconnected to the modem port, it appears to work normally. An
ImageWriter I also appears to work normally, on either port.
Probable diagnosis: The problem is on the 51 2K or 512Ke logic
board.
Solution: Check/replace the 26LS30 chip (16-pin DIP, dual
differential RS422 party line/quad single-ended RS423 line driver)
at board location B6.
Approximate cost of repairing it yourself:
$2.49
1 ’26LS30 chip
2.49
2 hours
Approximate third-party repair cost:
$135.00
1 26LS30 chip
5.00
2 hours labor
130.00
Approximate dealer repair cost:
$358.33
1 new logic board (51 2K)
288.33
1 hour labor
70.00
72
The Dead Mac Scrolls
Symptoms: A Mac 128K, 51 2K or 512Ke does not show up on an
AppleTalk network. Otherwise, it appears to be normal.
Probable diagnosis: The problem is on the logic board.
Solution: Check/replace the 26LS30 chip (16-pin DIP, dual
differential RS422 party line/quad single-ended RS423 line driver)
at board location B6.
Approximate cost of repairing it yourself:
$2.49
1 26LS30chip
2.49
2 hours
Approximate third-party repair cost:
$135.00
1 26LS30chip
5.00
2 hours labor
130.00
Approximate dealer repair cost:
$358.33
1 new logic board (512 K)
288.33
1 hour labor
70.00
Early Macs
73
Symptoms: On startup, a Mac Plus resets several times any
ImageWriter II directly connected to the printer port. The first time
you try to print you get a dialog box stating: The printer is not
responding, but subsequent tries made during the same computer
session work fine. If the same ImageWriter II is reconnected to the
modem port, it appears to work normally. An ImageWriter I also
appears to work normally, on either port.
Probable diagnosis: The problem is on the Mac Plus logic board.
Solution: Check/replace the 26LS30 chip (16-pin DIP, dual
differential RS422 party line/quad single-ended RS423 line driver)
at board location B3.
Approximate cost of repairing it yourself:
$2.49
1 26LS30 chip
2.49
2 hours
Approximate third-party repair cost:
$135.00
1 26LS30chip
5.00
2 hours labor
130.00
Approximate dealer repair cost:
$445.00
1 new logic board (Mac Plus)
375.00
1 hour labor
70.00
74
The Dead Mac Scrolls
Symptoms: The Mac Plus does not show up on an AppleTalk
network. Otherwise, it appears to be normal.
Probable diagnosis: The problem is on the logic board.
Solution: Check/replace the 26LS30 chip (16-pin DIP, dual
differential RS422 party line/quad single-ended RS423 line driver)
at board location B3.
Approximate cost of repairing it yourself:
$2.49
1 26LS30chip
2.49
2 hours
Approximate third-party repair cost:
$135.00
1 26LS30 chip
5.00
2 hours labor
130.00
Approximate dealer repair cost:
$445.00
1 new logic board (Mac Plus)
375.00
1 hour labor
70.00
Early Macs
75
Symptoms: On a Macintosh 512Ke the internal 800K disk drive
works OK, but known-good external 800K disk drives do not work.
Regardless of what disk you insert into the external DD, all you get is:
This disk is unreadable. Do you want to initialize it?
4
Typical history: These very same disks work perfectly in other 800K
disk drives. These very same external 800K disk drives work perfectly
on other Macs (512Ke, Plus, SE).
Probable diagnosis: The problem is on the 512Ke logic board.
Solution: Check/replace the RC filter (20-pin, DIP, Apple part
115-0002) at location A13.
Approximate cost of repairing it yourself:
$12.00
1 Bourns filter
12.00
2 hours
Approximate third-party repair cost:
$154.00
1 Bourns filter
24.00
2 hours labor
130.00
Approximate dealer repair cost:
$358.33
1 new logic board (51 2 K)
288.33
1 hour labor
70.00
76
The Dead Mac Scrolls
Symptoms: On a Macintosh Plus the internal 800K disk drive works
OK, but external 800K disk drives that are known to be good do not
work. Regardless of what disk you insert into the external DD, all you
get is: This disk is unreadable. Do you want to initialize it?
Typical history: These very same disks work perfectly in other 800K
disk drives. These very same external 800K disk drives work perfectly
on other Macs (512Ke, Plus, SE).
Probable diagnosis: The problem is on the Mac Plus logic board.
Solution: Check/replace the RC filter (20-pin, DIP, Apple part
1 1 5-0002) at location A1 1 .
Approximate cost of repairing it yourself:
$12.00
1 Bourns filter
12.00
2 hours
Approximate third-party repair cost:
$154.00
1 Bourns filter
24.00
2 hours labor
130.00
Approximate dealer repair cost:
$445.00
1 new logic board (Plus)
375.00
1 hour labor
70.00
Early Macs
77
Symptoms: When floppy disks are inserted or ejected, they rub up
against the cabinet opening.
Cabinet opening
Disk
Typical history: The problem occurred right after an 800K
DD/ROM upgrade or a disk-drive swap.
Probable diagnosis: The disk drive isn't centered on the cabinet
opening.
Solution: Loosen/reposition the disk drive mounting screws.
Screw C©)
Approximate cost of repairing it yourself:
15 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
78
The Dead Mac Scrolls
Symptoms: On a Macintosh 512Ke with a SCSI upgrade, if there's
an external hard drive connected to the SCSI port, it won't boot
from a floppy disk unless the hard drive is also switched on.
Typical history: This same external hard drive works perfectly on
other Macs. There's no need to power it up when all you want to do
is play a game from a floppy disk.
Probable diagnosis: The problem is on the 512Ke logic board.
Solution: Replace the version-! ROMs (marked 342-0341 -A and
342-0342-A) at locations D6 and D8 with a set of version-3 ROMs
(marked 342-0341 -C and 342-0342-B).
A
B
C
D
E
F
G
Approximate cost of repairing it yourself:
$125.00
1 set of version-3 ROMs
125.00
1 hour
Approximate third-party repair cost:
$255.00
1 set of version-3 ROMs
125.00
2 hours labor
130.00
Approximate dealer repair cost:
$260.00
1 set of version-3 ROMs
190.00
1 hour labor
70.00
Early Macs
79
Symptoms: On startup, a 512Ke (with SCSI upgrade) will not boot if
the computer is switched on first, or if the external hard drive is
switched on simultaneously. But, if you switch on the hard drive,
wait 30 seconds and then switch on the computer, everything works
OK.
Typical history: This same external hard drive works perfectly on
other Macs. There's no need to wait 30 seconds before switching on
the computer.
Probable diagnosis: The problem is on the 512Ke logic board.
Solution: Replace the version-2 ROMs (marked 342-0341 -B and
342-0342-A) at locations D6 and D8 with a set of version-3 ROMs
(marked 342-0341 -C and 342-0342-B), or replace the hard drive.
A
B
C
D
E
F
G
6 8
Approximate cost of repairing it yourself:
$125.00
1 set of version-3 ROMs
125.00
1 hour
Approximate third-party repair cost:
$255.00
1 set of version-3 ROMs
125.00
2 hours labor
130.00
Approximate dealer repair cost:
$260.00
1 set of version-3 ROMs
190.00
1 hour labor
70.00
80
The Dead Mac Scrolls
Symptoms: If there's an external hard drive connected to the SCSI
port, a Mac Plus won't boot from a floppy disk unless the hard drive
is also switched on.
Typical history: This same external hard drive works perfectly on
other Macs. There's no need to power it up when all you want to do
is play a game from a floppy disk.
Probable diagnosis: The problem is on the Mac Plus logic board.
Solution: Replace the version-1 ROMs (marked 342-0341 -A and
342-0342-A) at locations D6 and D8 with a set of version-3 ROMs
(marked 342-0341 -C and 342-0342-B).
A
B
C
D
E
F
G
Approximate cost of repairing it yourself:
$125.00
1 set of version-3 ROMs
125.00
1 hour
Approximate third-party repair cost:
$255.00
1 set of version-3 ROMs
125.00
2 hours labor
130.00
Approximate dealer repair cost:
$260.00
1 set of version-3 ROMs
190.00
1 hour labor
70.00
Early Macs
81
Symptoms: A Mac Plus will not boot if the computer is switched on
first, or if the external hard drive is switched on simultaneously. But if
you switch on the hard drive, wait 30 seconds and then switch on
the computer, everything works OK.
Typical history: This same external hard drive works perfectly on
other Macs. There's no need to wait 30 seconds before switching on
the computer.
Probable diagnosis: The problem is on the Mac Plus logic board.
Solution: Replace the version-2 ROMs (marked 342-0341 -B and
342-0342-A) at locations D6 and D8 with a set of version-3 ROMs
(marked 342-0341 -C and 342-0342-B), or replace the hard drive.
6 7
Approximate cost of repairing it yourself:
$125.00
1 set of version-3 ROMs
125.00
1 hour
Approximate third-party repair cost:
$255.00
1 set of version-3 ROMs
125.00
2 hours labor
130.00
Approximate dealer repair cost:
$260.00
1 set of version-3 ROMs
190.00
1 hour labor
70.00
82
The Dead Mac Scrolls
Symptoms: On a Mac 128K, 51 2K or 512Ke everything the mouse
pointer touches is automatically selected, even when the mouse
button is up.
Typical history: This very same mouse works perfectly on other
Macs. Other mice malfunction exactly the same way on this Mac.
Probable diagnosis: The problem is on the 128K, 51 2K or 512Ke
logic board.
Solution: Check/replace the RC filter (20-pin, DIP, Apple part
1 1 5-0002) at location A1 3.
Approximate cost of repairing it yourself:
$12.00
1 Bourns filter
12.00
2 hours
Approximate third-party repair cost:
$154.00
1 Bourns filter
24.00
2 hours labor
130.00
Approximate dealer repair cost:
$358.33
1 new logic board (51 2K)
288.33
1 hour labor
70.00
Early Macs
83
Symptoms: On a Mac Plus, everything the mouse pointer touches is
automatically selected, even when the mouse button is up.
Typical history: This very same mouse works perfectly on other
Macs. Other mice malfunction exactly the same way on this Mac.
Probable diagnosis: The problem is on the Mac Plus logic board.
Solution: Check/replace the RC filter (20-pin, DIP, Apple part
1 1 5-0002) at location A1 1 .
Approximate cost of repairing it yourself:
$12.00
1 Bourns filter
12.00
2 hours
Approximate third-party repair cost:
$154.00
1 Bourns filter
24.00
2 hours labor
130.00
Approximate dealer repair cost:
$445.00
1 new logic board (Plus)
375.00
1 hour labor
70.00
84
The Dead Mac Scrolls
Symptoms: Everything the mouse pointer touches is automatically
selected, even when the mouse button is up.
Typical history: Other mice work perfectly on this computer.
Probable diagnosis: The problem is inside the mouse.
Solution: Check/replace the micro switch under the mouse button.
Micro switch
Approximate cost of repairing it yourself:
$2.00
1 micro switch
2.00
1 hour
Approximate third-party repair cost:
$69.00
1 micro switch
4.00
1 hour labor
65.00
Approximate dealer repair cost:
$93.33
1 new mouse
93.33
Early Macs
85
Symptoms: The mouse pointer is jammed against the right side of
the display. It goes up and down, but it doesn't go left.
Probable diagnosis: The problem is in the mouse cable.
Solution: Check/repair the brown wire, or replace the cable.
Mac End (DB9-P)
Mouse End (ID
1 Ground
Black
2 +5V
Red
3 Ground
Black
4 Left
Brown
5 Right
Orange
6 Not connected
Not applicable
7 Button
Yellow
8 Down
Green
9 Up
Blue
Approximate cost of repairing it yourself:
$15.00
1 mouse cable
15.00
30 min.
Approximate third-party repair cost:
$62.50
1 mouse cable
30.00
1 half hour labor
32.50
Approximate dealer repair cost:
$93.33
1 1 new mouse
93.33
86
The Dead Mac Scrolls
Symptoms: The mouse pointer is jammed against the left side of
the display. It goes up and down, but it doesn't go right.
Probable diagnosis: The problem is in the mouse cable.
Solution: Check/repair the orange wire, or replace the cable.
Mac End (DB9-P)
Mouse End (11 )
1 Ground
Black
2 +5V
Red
3 Ground
Black
4 Left
Brown
5 Right
Orange
6 Not connected
Not applicable
7 Button
Yellow
8 Down
Green
9 Up
Blue
Approximate cost of repairing it yourself:
$15.00
1 mouse cable
15.00
30 min.
Approximate third-party repair cost:
$62.50
1 mouse cable
30.00
1 half hour labor
32.50
Approximate dealer repair cost:
$93.33
1 new mouse
93.33
Early Macs
87
Symptoms: The mouse pointer is jammed against the top of the
display. It goes left and right, but it doesn't go down.
Probable diagnosis: The problem is in the mouse cable.
Solution: Check/repair the green wire, or replace the cable.
Mac End (DB9-P)
1 Ground
2 +5V
3 Ground
4 Left
5 Right
6 Not connected
7 Button
8 Down
9 Up
Mouse End (ID
Black
Red
Black
Brown
Orange
Not applicable
Yellow
Green
Blue
Approximate cost of repairing it yourself:
$15.00
1 mouse cable
15.00
30 min.
Approximate third-party repair cost:
$62.50
1 mouse cable
30.00
1 half hour labor
32.50
Approximate dealer repair cost:
$93.33
1 new mouse
93.33
88
The Dead Mac Scrolls
Symptoms: The mouse pointer is jammed against the bottom of
the display. It goes left and right, but it doesn't go up.
Probable diagnosis: The problem is in the mouse cable.
Solution: Check/repair the blue wire, or replace the cable.
Mac End (DB9-P)
Mouse End (11 )
1 Ground
Black
2 +5V
Red
3 Ground
Black
4 Left
Brown
5 Right
Orange
6 Not connected
Not applicable
7 Button
Yellow
8 Down
Green
9 Up
Blue
Approximate cost of repairing it yourself:
$15.00
1 mouse cable
15.00
30 min.
Approximate third-party repair cost:
$62.50
1 mouse cable
30.00
1 half hour labor
32.50
Approximate dealer repair cost:
$93.33
1 new mouse
93.33
Early Macs
89
Symptoms: The mouse doesn't work at all. The pointer never
appears. Clicking the button has no effect.
Typical history: Other mice work fine on this computer.
Probable diagnosis: The problem is in the mouse cable.
Solution: Check/repair the black and red wires, or replace the
cable.
Mac End (DB9-P)
1 Ground
2 +5V
3 Ground
4 Left
5 Right
6 Not connected
7 Button
8 Down
9 Up
Mouse End (ID
Black
Red
Black
Brown
Orange
Not applicable
Yellow
Green
Blue
Approximate cost of repairing It yourself:
$15.00
1 mouse cable
15.00
30 min.
Approximate third-party repair cost:
$62.50
1 mouse cable
30.00
1 half hour labor
32.50
Approximate dealer repair cost:
$93.33
1 new mouse
93.33
90
The Dead Mac Scrolls
Symptoms: The mouse jams when it's moved from side to side (left
to right). The jam tends to lift the mouse right off the table.
Probable diagnosis: The problem is inside the mouse. The retainer
at the top of the split plastic post (which bears the side-to-side
interrupter axle) is broken. Instead of remaining horizontal, the
side-to-side axle is riding up on the mouse ball.
Solution: Fashion a new bearing retainer from a wooden toothpick.
Wedge the toothpick piece into the top of the broken bearing post.
Test the mouse. When the side-to-side action is correct, cement
the toothpick piece in place (but not the axle) with epoxy glue.
Side-to-side
bearing
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$93.33
1 new mouse 93.33
Early Macs
91
Symptoms: The mouse jams when it's moved from front to back (up
and down). The jam tends to lift the mouse right off the table.
Probable diagnosis: The problem is inside the mouse. The retainer
at the top of the split plastic post (which bears the up-and-down
interrupter axle) is broken. Instead of remaining horizontal, the
up-and-down axle is riding up on the mouse ball.
Solution: Fashion a new bearing retainer from a wooden toothpick.
Wedge the toothpick piece into the top of the broken bearing post.
Test the mouse. When the up-and-down action is correct, cement
the toothpick piece in place (but not the axle) with epoxy glue.
Up-and-down
bearing
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$93.33
1 new mouse 93.33
92
The Dead Mac Scrolls
Symptoms: The computer won't start. Startup disks are always
ejected, but only when the keyboard (model M01 10) is connected.
Typical history: The problem began shortly after a beverage was
spilled on the keyboard.
Probable diagnosis: The problem is on the key-matrix PCB inside
the keyboard.
Solution: Replace the 72LS123 chip (16-pin DIP, monostable
multivibrator with clear) at board location U2.
Approximate cost of repairing it yourself:
49^
1 74LS123chip
.49
30 min.
Approximate third-party repair cost:
$70.00
1 74LS123chip
5.00
1 hour labor
65.00
Approximate dealer repair cost:
$129.00
1 new keyboard (Mac Plus)
129.00
Early Macs
93
Symptoms: The keyboard is intermittent. Sometimes all of the keys
work. Sometimes none of the keys work. Other keyboards work fine
on this Mac.
Typical history: The problem began shortly after the keyboard was
disconnected (and then reconnected).
Probable diagnosis: The problem is inside the keyboard. Most likely,
the contacts on the RJ-1 1 jack are bent.
Solution: Straighten the contacts on the Rj-1 1 jack.
&
RJ-1 1
Approximate cost of repairing it yourself:
5 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$129.00
1 new keyboard (Mac Plus) 129.00
94
The Dead Mac Scrolls
Symptoms: The keyboard is intermittent. Sometimes all of the keys
work. Sometimes none of the keys work. Substituting other
keyboards does not solve the problem.
Typical history: The problem began shortly after the keyboard was
disconnected (and then reconnected).
Probable diagnosis: The problem is on the logic board. Most likely,
the contacts on the RJ-1 1 jack are bent.
Solution: Straighten the contacts on the Rj-1 1 jack.
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$130.00
2 hours labor 1 30.00
Approximate dealer repair cost:
$445.00
1 new logic board (Mac Plus) 375.00
1 hour labor 70.00
Early Macs
95
Symptoms: The keyboard on a Mac 512Ke does not work.
Substituting other keyboards does not solve the problem.
Typical history: The Macintosh is/was an upgraded 51 2K or 512Ke.
The problem began immediately after a Dove MacSnap 524 or 548
memory board was removed (pried up with a screwdriver).
Probable diagnosis: The problem is on the 512Ke logic board. Most
likely, circuit traces were cut by the screwdriver tip.
Solution: Check for and repair damaged circuit traces near the TSG
PAL at board reference D3.
&
Approximate cost of repairing It yourself:
2 hours
Approximate third-party repair cost:
$130.00
2 hours labor 130.00
Approximate dealer repair cost:
$358.33
1 new logic board (51 2 K) 288.33
1 hour labor 70.00
96
The Dead Mac Scrolls
Symptoms: A M01 1 0 (1 28 or 51 2) keyboard does not work on any
Mac.
Typical history: The problem occurred a telephone cable was used
on the keyboard.
Probable diagnosis: The problem is in the keyboard.
Solution: Replace the 8021 H (28-pin) chip at board reference Ul.
&
izr
Ul
Approximate cost of repairing it yourself:
$1.25
1 8021 H chip
1.25
30 min.
Approximate third-party repair cost:
$90.00
1 8021 H chip
25.00
1 hour labor
65.00
Approximate dealer repair cost:
$129.00
1 new keyboard (Mac Plus) 1
29.00
Early Macs
97
Symptoms: A M01 10A (Mac Plus) keyboard does not work on any
Mac.
Typical history: The problem occurred after a telephone cable was
used on the keyboard.
Probable diagnosis: The problem is in the keyboard.
Solution: Replace the 8048 (40-pin DIP, MPU 8-bit) chip located
under the spacebar.
&
8048
Approximate cost of repairing it yourself:
$1.25
1 8048 chip
1.25
30 min.
Approximate third-party repair cost:
$90.00
1 8048 chip
25.00
1 hour labor
65.00
Approximate dealer repair cost:
$129.00
1 new keyboard (Mac Plus) 1 29.00
98
The Dead Mac Scrolls
Symptoms: The computer does not maintain the proper time and
date.
Probable diagnosis: The problem is on the analog board.
Solution: Check/replace the clock battery (alkaline 4.5V, Eveready
523) at board location B1.
Approximate cost of repairing it yourself:
$3.00
1 alkaline battery
3.00
1 min.
Approximate third-party repair cost:
$71.00
1 alkaline battery
6.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 183.33
1 hour labor
70.00
Early Macs
99
Symptoms: The display is out of focus. Other than that, the
computer is usable.
Ml II V
W.\T/AKUJtlOHJ|<lMSOP0
USM.VWXV/ABCDEFGHL'KLM
NOf>QRSTUVWXYZ ABCDflCI )l
|Kt MNC )»“(}RSl U VWXVZABCt)
fU .Mlikt MNCJIXJRSTL'VVVXV/
ABCnEFGHiJKLMNOPQRSTLV
WXY2 ABCDI I CHMKLM.NOPf^
RSnjVVl'XY/ASCDlK'.MIIKl.M
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Typical history: The symptoms appeared out of the blue (not
immediately after the computer was board-swapped).
Probable diagnosis: The problem is on the analog board.
Solution: Check/replace open resistor R9 (1MQ, V^-watt, 5%). Also
see the next entry.
R9
Approximate
1 1MQ,
repairing it yourself:
resistor
.15
Apprc
1
1 hour labor
rty repair cost:
resistor
5.00
65.00
Approximate dealer repair cost:
1 new board
1 hour labor
183.33
70.00
100
The Dead Mac Scrolls
Symptoms: The display is out of focus. Other than that, the
computer is usable.
Typical history: The symptoms appeared immediately after the
computer was serviced or board-swapped (not out of the blue).
Probable diagnosis: The new analog board is out of adjustment.
Solution: Adjust variable resistor R54 (labeled Focus) for the best
focus. If R54 makes no difference, see the prior entry.
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E»CMI;KlAaNOei:3RS lUVWXYZ
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Focus
Approximate cost of repairing it yourself:
30 min.
Approximate
1 hour labor
repair cost:
$65.00
65.00
Approximate dealer repair cost:
1 new board
1 hour labor
183.33
70.00
Early Macs
101
Symptoms: The display is tilted. Other than that, the Mac is usable.
Typical history: The symptoms appeared immediately after the
computer was board-swapped or serviced (not out of the blue).
Probable diagnosis: The yoke clamp (on the neck of the CRT) is
loose.
Solution: Adjust/snug the yoke for a square picture.
Yoke
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
102
The Dead Mac Scrolls
Symptoms: The display isn't rectangular. One or more of the edges
is bowed. Other than that, the Mac is usable.
Typical history: The problem occurred right after completion of
upgrade or service work.
Probable diagnosis: One of the yoke magnets is loose.
Solution: Identify/adjust the loose yoke magnet.
Magnets El
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
Early Macs
103
Symptoms: The disjDlay is off center. Other than that, the Mac is
usable.
Typical history: The problem occurred right after with the
completion of upgrade or service work.
Probable diagnosis: The yoke rings are out of adjustment.
Solution: Adjust the yoke rings for a square picture.
Approximate cost of repairing it yourself:
15 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
104
The Dead Mac Scrolls
Symptoms: The video display is shrunken. Other than that, the
computer is usable.
Typical history: The problem occurred right after completion of
upgrade or service work.
Probable diagnosis: The analog board is out of adjustment.
Solution: Adjust variable resistor R55 (labeled Height) and tunable
coil L2 (labeled Width) for a 7.1 1 x 4.75-inch display.
Width
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
1 hour labor
$65.00
65.00
Approximate dealer repair cost:
1 new analog board
1 hour labor
$253.33
183.33
70.00
Early Macs
105
Symptoms: On startup, the floppy disk icon appears, but the
question mark does not blink. The internal 800K disk drive does not
spin. Startup disks are neither read nor ejected.
Typical history: The problem occurred right after completion of
upgrade or service work (right after you put everything back
together).
Probable diagnosis: The disk drive cable is loose or disconnected.
Solution: Check/reconnect both ends of the disk drive cable.
Loose
Approximate cost of repairing it yourself:
15 min.
Approximate third-party repair cost:
$65.00
1 hour labor
65.00
Approximate dealer repair cost:
$300.00
1 800K mechanical assembly 230.00
1 hour labor
70.00
106
The Dead Mac Scrolls
Symptoms: On startup, the Mac bongs, but then there is a relatively
bright white dot in the center of the display.
Typical history: The problem occurred right after completion of
upgrade or service work.
Probable diagnosis: The yoke cable is disconnected.
Solution: Reconnect the yoke cable to J1 on the analog board.
Approximate cost of repairing it yourself:
15 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
Early Macs
107
Symptoms: On startup, there is a relatively /ouc/ sizzling noise. The
display does not appear.
Typical history: The problem occurred right after completion of
upgrade or service work (right after you put everything back
together).
Probable diagnosis: The high voltage (HV) cable from the flyback
transformer is disconnected.
Solution: Reconnect the HV cable from T1, the flyback transformer,
to the anode well on the CRT.
Approximate cost of repairing it yourself:
15 min.
Approximate third-party repair cost:
1 hour labor
65.00
$65.00
Approximate dealer repair cost:
1 hour labor
70.00
$70.00
108
The Dead Mac Scrolls
Symptoms: There is no startup bong. There is no video. The display
is dark, but bright flashes of light are coming from inside the
computer. The whole inside of the Mac is arcing and sparking. It
looks and sounds as if there's an arc welder in there!
Typical history: The Mac was dropped or was damaged in shipping.
Probable diagnosis: The neck of the cathode ray tube is broken. To
prevent a fire, the neon bulb at board reference NE2 on the analog
board is rapidly switching on and off.
Solution: Replace the CRT.
CRT
NE2
Approximate cost of repairing it yourself:
$125.00
1 9-inch CRT
125.00
hour
Approximate third-party repair cost:
$315.00
1 9-inch CRT
250.00
1 hour labor
65.00
Approximate dealer repair cost:
$995.00
1 new Mac Classic
995.00
Early Macs
109
Symptoms: Occasionally, the display emits a bright flash of light. The
effect is similar to a camera flash going off in your face.
Probable diagnosis: The problem is a cracked solder joint on the
analog board.
Solution: Check/resolder pin 1 (cut off) of the ]2 connector.
;«-pin 1
12
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$65.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 183.33
1 hour labor
70.00
110
The Dead Mac Scrolls
Symptoms: There's no startup bong and no beep (or other) sound.
Otherwise, the raster is normal, and the computer is usable.
Typical history: The problem occurred right after completion of
upgrade or service work.
Probable diagnosis: The problem is on the analog board.
Solution: Check/reconnect the speaker input plug (if present) into
the audio output jack at board reference J3. If that's not it, see the
next entry.
Approximate cost of repairing it yourself:
15 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
Early Macs
111
Symptoms: There's no startup bong and no beep (or other) sound.
Otherwise, the raster is normal, and the computer is usable.
Typical history: The problem occurred right after completion of
upgrade or service work.
Probable diagnosis: The RFI shield is shorting to the logic board.
Solution: Insulate the upper side of the RFI shield with two-inch
packing tape. Also see the prior entry.
Approximate cost of repairing it yourself: 15 min.
Approximate third-party repair cost: $65.00
1 hour labor 65.00
Approximate dealer repair cost:
1 hour labor
70.00
$70.00
112
The Dead Mac Scrolls
Symptoms: On startup you get a sad Mac with error code 010601.
Typical history: The problem occurred right after completion of a
128K ROM upgrade on a 51 2K Mac.
Probable diagnosis: The ROMs are from different versions.
Solution: Replace the unmatched ROMs (marked 342-0341 -B,
342-0342-B) at board locations D6 and D8 with a matched set of
version-3 ROMs (marked 342-0341 -C, 342-0342-B).
A
B
C
D
E
F
G
Approximate cost of repairing it yourself:
$125.00
1 set of version-3 ROMs
125.00
1 hour
Approximate third-party repair cost:
$255.00
1 set of version-3 ROMs
125.00
2 hours labor
130.00
Approximate dealer repair cost:
$260.00
1 set of version-3 ROMs
190.00
1 hour labor
70.00
Early Macs
113
Symptoms: On startup, a Mac 128K or 51 2K bongs, but then you
get a sad Mac with error code 01 41 20.
Typical history: The problem occurred right after completion of
upgrade or service work on a Mac with 64K ROMs.
Probable diagnosis: The analog board is out of adjustment. The
voltage is too low.
Solution: While measuring from pin 6 of the power/video cable to
ground, adjust variable resistor R56 (labeled Voltage) for 5.0V DC.
Voltage
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$65.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 183.33
1 hour labor
70.00
114
The Dead Mac Scrolls
Symptoms: On startup you get a sad Mac with error code 01 FE01 .
Typical history: The problem occurred right after completion of a
128K ROM upgrade on a 512K Mac.
Probable diagnosis: The ROMs are from different versions.
Solution: Replace the unmatched ROMs (marked 342-0341 -C,
342-0342-A) at board locations D6 and D8 with a matched set of
version-3 ROMs (marked 342-0341 -C, 342-0342-B).
A
B
C
D
E
F
G
Approximate cost of repairing it yourself:
$125.00
1 set of version-3 ROMs
125.00
1 hour
Approximate third-party repair cost:
$255.00
1 set of version-3 ROMs
125.00
2 hours labor
130.00
Approximate dealer repair cost:
$260.00
1 set of version-3 ROMs
190.00
1 hour labor
70.00
Early Macs
115
Symptoms: On startup, you get a sad Mac with error code 030001,
030002, 030004, 030008, 030010, 030020, 030040 or 030080.
Typical history: The problem occurred out of the blue or right after
installation of a SIMM upgrade.
Probable diagnosis: The problem is on the Mac Plus logic board.
Solution: Check/replace SIMMs 1 and 3 at locations F5-9 and G5-9.
Approximate cost of repairing it yourself:
$10.00
1 41-256KSIMM
10.00
1 hour
Approximate third-party repair cost:
$150.00
1 41-256KSIMM
20.00
2 hours labor
130.00
Approximate dealer repair cost:
$445.00
1 new logic board (Plus)
375.00
1 hour labor
70.00
116
The Dead Mac Scrolls
Symptoms: On startup, you get a sad Mac with error code 030100,
030200, 030400, 030800, 031000, 032000, 034000 or 038000.
Typical history: The problem occurred out of the blue or right after
installation of a SIMM upgrade.
Probable diagnosis: The problem is on the Mac Plus logic board.
Solution: Check/replace SIMMs 2 and 4 at locations F5-9 and G5-9.
Approximate cost of repairing it yourself;
$10.00
1 41-256KSIMM
10.00
1 hour
Approximate third-party repair cost:
$150.00
1 41-256KSIMM
20.00
2 hours labor
130.00
Approximate dealer repair cost:
$445.00
1 new logic board (Plus)
375.00
1 hour labor
70.00
Early Macs
J77
Symptoms: On startup, the computer bongs and you almost ge[ to
the desktop, but then you get a sad Mac with error code OFOOOA.
Typical history: The Macintosh Plus (or 512Ke with SCSI upgrade)
is connected to an external HD 20SC or other hard drive. If you
disconnect the hard drive and boot from a floppy, it works OK.
Probable diagnosis: The hard drive has a bad partition map.
Solution: Boot the computer from a floppy disk, wait for the desktop
to appear, and then turn on the drive. Use third-party SCSI
formatting software (such as Silverlining version # 5.2/06, not Apple
HD SC Setup) to repair the partition map (this won't always work).
Approximate cost of repairing it yourself:
$135.00
1 Silverlining (street price) 135.00
30 min.
Approximate third-party repair cost:
$130.00
2 hours labor 130.00
Approximate dealer repair cost:
$756.67
1 HD20SC external mechanism 756.67
118
The Dead Mac Scrolls
Symptoms: On startup, there's no bong, and you get a sad Mac with
error code OFOOOD.
Typical history: The problem occurred right after installation of a
programmer's switch.
Probable diagnosis: The interrupt lever on the programmer's switch
is making contact with the interrupt button on the logic board.
Solution: Check/reposition the programmer's switch. If necessary,
trim and shorten the shafts.
/ I
Programmer's
switch
^ J
Approximate cost of repairing it yourself:
15 min.
Approximate third-party repair cost:
$65.00
1 hour labor
65.00
Approximate dealer repair cost:
$358.33
1 new logic board (51 2K) 288.33
1 hour labor
70.00
Early Macs
119
Symptoms: On startup, the computer bongs and you almost get to
the desktop, but then you get a sad Mac with error code 0F0002.
Typical history: The Macintosh is/was an upgraded 51 2K or 512Ke.
The problem began immediately after a Dove/MacSnap 524 or 548
memory board was removed (pried up with a screwdriver).
Probable diagnosis: The problem is on the logic board.
Solution: Check for and repair damaged circuit traces near the
AS253 chips at board locations G3, G4, F3 and F4.
Approximate cost of repairing it yourself:
2 hours
Approximate third-party repair cost:
$130.00
2 hours labor 130.00
Approximate dealer repair cost:
$358.33
1 new logic board (51 2K) 288.33
1 hour labor 70.00
!
120
The Dead Mac Scrolls
Symptoms: On startup, the computer bongs and you almost gel to
the desktop, but then you get a sad Mac with error code 0F0002.
Typical history: The Macintosh Plus (or 512Ke with SCSI upgrade)
is connected to an external HD 20SC or other hard drive. If you
disconnect the hard drive and boot from a floppy, it works OK.
Probable diagnosis: The hard drive has a bad partition map.
Solution: Boot the computer from a floppy disk, wait for the desktop
to appear, and then turn on the drive. Use third-party SCSI
formatting software (such as Silverlining version # 5.2/06, not Apple
HD SC Setup software) to repair the partition map (this doesn't
always work).
Approximate cost of repairing it yourself:
$135.00
1 Silverlining (street price) 135.00
30 min.
Approximate third-party repair cost:
$130.00
2 hours labor 1 30.00
Approximate dealer repair cost:
$756.67
1 HD20SC external mechanism 756.67
Early Macs
121
Symptoms: On startup, the computer bongs and you almost gei to
the desktop, but then you get a sad Mac with error code 0F0003.
Typical history: The Macintosh Plus (or 512Ke with SCSI upgrade)
is connected to an external HD 20SC or other hard drive. If you
disconnect the hard drive and boot from a floppy, it works OK.
Probable diagnosis: The hard drive has a bad partition map.
Solution: Boot the computer from a floppy disk, wait for the desktop
to appear, and then turn on the drive. Use third-party SCSI
formatting software (such as Silverlining version # 5.2/06, not Apple
HD SC Setup software) to repair the partition map (not always
successful).
Approximate cost of repairing it yourself:
1 Silverlining (street price) 135.00
$135.00
30 min.
Approximate third-party repair cost:
2 hours labor 130.00
$130.00
Approximate dealer repair cost:
1 HD20SC external mechanism 756.67
$756.67
122
The Dead Mac Scrolls
Symptoms: On startu(3, the computer bongs, but then you get a sad
Mac with error code 0F0004.
Typical history: The problem occurred right after upgrade or
service work on a 1 28K or 51 2K Mac with 64K ROMs.
Probable diagnosis: The analog board is out of adjustment.
Solution: Turn variable resistor R56 (labeled Voltage) fuWy
counterclockwise. Restart and adjust R56 for 5.0V DC as measured
from pin 6 of the power/video cable to chassis ground.
Voltage
Approximate cost of repairing it yourself:
15 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$253.33
1 new analog board 183.33
1 hour labor 70.00
Early Macs
123
Symptoms: On startup, a Mac 128K or 51 2K bongs, but then you
get a sad Mac with error code 0F0064.
Probable diagnosis: The computer is incompatible with System
software on the startup disk.
Solution: Replace the 64K ROM chips at board locations D6 and
D8 with a set of 1 28K ROMs, or start up from a 400K disk formatted
under the Macintosh File System (MFS).
A
B
C
D
E
F
G
1 ^
6 8
Approximate cost of repairing it yourself:
$125.00
1 set of 1 28K ROMs
125.00
1 hour
Approximate third-party repair cost:
$255.00
1 set of 1 28K ROMs
125.00
2 hours labor
130.00
Approximate dealer repair cost:
$260.00
1 set of version-3 ROMs
190.00
1 hour labor
70.00
124
The Dead Mac Scrolls
Symptoms: On startup you get a sad Mac with error code nnOOOl
(where the value of nn is insignificant).
Typical history: The problem occurred out of the blue or right after
installation of a 128K to 51 2K RAM upgrade.
Probable diagnosis: The problem is on the logic board.
Solution: Check/replace the RAM chip at board location F5.
Approximate cost of repairing it yourself:
$1.50
1 41 -256K 1 SONS RAM chip
1.50
2 hours
Approximate third-party repair cost:
$135.00
1 41 -256K 1 SONS RAM chip
5.00
2 hours labor
130.00
Approximate dealer repair cost:
$358.33
1 new logic board (51 2K)
288.33
1 hour labor
70.00
Early Macs
125
Symptoms: On startup you get a sad Mac with error code nn0002
(where the value of nn is insignificant).
Typical history: The problem occurred out of the blue or right after
installation of a 128K to 51 2K RAM upgrade.
Probable diagnosis: The problem is on the logic board.
Solution: Check/replace the RAM chip at board location F6.
Approximate cost of repairing it yourself:
$1.50
1 41 -256K 1 SONS RAM chip
1.50
2 hours
Approximate third-party repair cost:
$135.00
1 41 -256K 1 SONS RAM chip
5.00
2 hours labor
130.00
Approximate dealer repair cost:
$358.33
1 new logic board (51 2K)
288.33
1 hour labor
70.00
126
The Dead Mac Scrolls
Symptoms: On startup you get a sad Mac with error code nn0004
(where the value of nn is insignificant).
Typical history: The problem occurred out of the blue or right after
installation of a 128K to 51 2K RAM upgrade.
Probable diagnosis: The problem is on the logic board.
Solution: Check/replace the RAM chip at board location F7.
Approximate cost of repairing it yourself:
$1.50
1 41 -256K 1 SONS RAM chip
1.50
2 hours
Approximate third-party repair cost:
$135.00
1 41 -256K 1 SONS RAM chip
5.00
2 hours labor
130.00
Approximate dealer repair cost:
$358.33
1 new logic board (51 2K)
288.33
1 hour labor
70.00
Early Macs
127
Symptoms: On startup you get a sad Mac with error code nnOOOS
(where the value of nn is insignificant).
Typical history: The problem occurred out of the blue or right after
the installation of a 128K to 51 2K RAM upgrade.
Probable diagnosis: The problem is on the logic board.
Solution: Check/replace the RAM chip at board location F8.
Approximate cost of repairing it yourself:
$1.50
1 41 -256K 1 SONS RAM chip
1.50
2 hours
Approximate third-party repair cost:
$135.00
1 41 -256K 1 SONS RAM chip
5.00
2 hours labor
130.00
Approximate dealer repair cost:
$358.33
1 new logic board (51 2K)
288.33
1 hour labor
70.00
128
The Dead Mac Scrolls
Symptoms: On startup you get a sad Mac with error code nnOOl 0
(where the value of nn is insignificant).
Typical history: The problem occurred out of the blue or right after
the installation of a 128K to 51 2K RAM upgrade.
Probable diagnosis: The problem is on the logic board.
Solution: Check/replace the RAM chip at board location F9.
Approximate cost of repairing it yourself:
$1.50
1 41 -256K 1 SONS RAM chip
1.50
2 hours
Approximate third-party repair cost:
$135.00
1 41 -256K 1 SONS RAM chip
5.00
2 hours labor
130.00
Approximate dealer repair cost:
$358.33
1 new logic board (51 2 K)
288.33
1 hour labor
70.00
Early Macs
129
Symptoms: On startup you get a sad Mac with error code nn0020
(where the value of nn is insignificant).
Typical history: The problem occurred out of the blue or right after
the installation of a 128K to 51 2K RAM upgrade.
Probable diagnosis: The problem is on the logic board.
Solution: Check/replace the RAM chip at board location F10.
Approximate cost of repairing it yourself:
$1.50
1 41 -256K 1 SONS RAM chip
1.50
2 hours
Approximate third-party repair cost:
$135.00
1 41 -256K 1 SONS RAM chip
5.00
2 hours labor
130.00
Approximate dealer repair cost:
$358.33
1 new logic board (51 2 K)
288.33
1 hour labor
70.00
130
The Dead Mac Scrolls
Symptoms: On startup you get a sad Mac with error code nn0040
(where the value of nn is insignificant).
Typical history: The problem occurred out of the blue or right after
installation of a 128K to 51 2K RAM upgrade.
Probable diagnosis: The problem is on the logic board.
Solution: Check/replace the RAM chip at board location F11.
Approximate cost of repairing it yourself:
$1.50
1 41 -256K 1 SONS RAM chip
1.50
2 hours
Approximate third-party repair cost:
$135.00
1 41-256K 1 SONS RAM chip
5.00
2 hours labor
130.00
Approximate dealer repair cost:
$358.33
1 new logic board (512 K)
288.33
1 hour labor
70.00
Early Macs
131
Symptoms: On startup you get a sad Mac with error code nn0080
(where the value of nn is insignificant).
Typical history: The problem occurred out of the blue or right after
installation of a 128K to 51 2K RAM upgrade.
Probable diagnosis: The problem is on the logic board.
Solution: Check/replace the RAM chip at board location FI 2.
Approximate cost of repairing it yourself:
$1.50
1 41 -256K 1 SONS RAM chip
1.50
2 hours
Approximate third-party repair cost:
$135.00
1 41 -256K 1 SONS RAM chip
5.00
2 hours labor
130.00
Approximate dealer repair cost:
$358.33
1 new logic board (51 2 K)
288.33
1 hour labor
70.00
132
The Dead Mac Scrolls
Symptoms: On startup you get a sad Mac with error code nnOlOO
(where the value of nn is insignificant).
Typical history: The problem occurred out of the blue or right after
installation of a 128K to 51 2K RAM upgrade.
Probable diagnosis: The problem is on the logic board.
Solution: Check/replace the RAM chip at board location G5.
Approximate cost of repairing it yourself:
$1.50
1 41 -256K 1 SONS RAM chip
1.50
2 hours
Approximate third-party repair cost:
$135.00
1 41 -256K 1 SONS RAM chip
5.00
2 hours labor
130.00
Approximate dealer repair cost:
$358.33
1 new logic board (512 K)
288.33
1 hour labor
70.00
Early Macs
133
Symptoms: On startup you get a sad Mac with error code nn0200
(where the value of nn is insignificant).
Typical history: The problem occurred out of the blue or right after
the installation of a 128K to 51 2K RAM upgrade.
Probable diagnosis: The problem is on the logic board.
Solution: Check/replace the RAM chip at board location G6.
Approximate cost of repairing it yourself:
$1.50
1 41 -256K 1 SONS RAM chip
1.50
2 hours
Approximate third-party repair cost:
$135.00
1 41 -256K 1 SONS RAM chip
5.00
2 hours labor
130.00
Approximate dealer repair cost:
$358.33
1 new logic board (51 2K)
288.33
1 hour labor
70.00
134
The Dead Mac Scrolls
Symptoms: On startup you get a sad Mac with error code nn0400
(where the value of nn is insignificant).
Typical history: The problem occurred out of the blue or right after
installation of a 128K to 51 2K RAM upgrade.
Probable diagnosis: The problem is on the logic board.
Solution: Check/replace the RAM chip at board location G7.
Approximate cost of repairing it yourself:
$1.50
1 41 -256K 1 SONS RAM chip
1.50
2 hours
Approximate third-party repair cost:
$135.00
1 41 -256K 1 SONS RAM chip
5.00
2 hours labor
130.00
Approximate dealer repair cost:
$358.33
1 new logic board (51 2 K)
288.33
1 hour labor
70.00
Early Macs
135
Symptoms: On startup you get a sad Mac with error code nn0800
(where the value of nn is insignificant).
Typical history: The problem occurred out of the blue or right after
the installation of a 128K to 51 2K RAM upgrade.
Probable diagnosis: The problem is on the logic board.
Solution: Check/replace the RAM chip at board location G8.
Approximate cost of repairing it yourself:
$1.50
1 41 -256K 1 SONS RAM chip
1.50
2 hours
Approximate third-party repair cost:
$135.00
1 41 -256K 1 SONS RAM chip
5.00
2 hours labor
130.00
Approximate dealer repair cost:
$358.33
1 new logic board (51 2K)
288.33
1 hour labor
70.00
1
136
The Dead Mac Scrolls
Symptoms: On startup you get a sad Mac with error code nnlOOO
(where the value of nn is insignificant).
Typical history: The problem occurred out of the blue or right after
installation of a 128K to 51 2K RAM upgrade.
Probable diagnosis: The problem is on the logic board.
Solution: Check/replace the RAM chip at board location G9.
Approximate cost of repairing it yourself:
$1.50
1 41 -256K 1 SONS RAM chip
1.50
2 hours
Approximate third-party repair cost:
$135.00
1 41 -256K 1 SONS RAM chip
5.00
2 hours labor
130.00
Approximate dealer repair cost:
$358.33
1 new logic board (51 2K)
288.33
1 hour labor
70.00
Early Macs
137
Symptoms: On startup you get a sad Mac with error code nn2000
(where the value of nn is insignificant).
Typical history: The problem occurred out of the blue or right after
installation of a 128K to 51 2K RAM upgrade.
Probable diagnosis: The problem is on the logic board.
Solution: Check/replace the RAM chip at board location CIO.
Approximate cost of repairing it yourself:
$1.50
1 41 -256K 1 SONS RAM chip
1.50
2 hours
Approximate third-party repair cost:
$135.00
1 41 -256K 1 SONS RAM chip
5.00
2 hours labor
130.00
Approximate dealer repair cost:
$358.33
1 new logic board (51 2K)
288.33
1 hour labor
70.00
138
The Dead Mac Scrolls
Symptoms: On startup you get a sad Mac with error code nn4000
(where the value of nn is insignificant).
Typical history: The problem occurred out of the blue or right after
installation of a 128K to 51 2K RAM upgrade.
Probable diagnosis: The problem is on the logic board.
Solution: Check/replace the RAM chip at board location G1 1.
Approximate cost of repairing it yourself:
$1.50
1 41 -256K 1 SONS RAM chip
1.50
2 hours
Approximate third-party repair cost:
$135.00
1 41 -256K 1 SONS RAM chip
5.00
2 hours labor
130.00
Approximate dealer repair cost:
$358.33
1 new logic board (51 2 K)
288.33
1 hour labor
70.00
Early Macs
139
Symptoms: On startup you get a sad Mac with error code nnSOOO
(where the value of nn is insignificant).
Typical history: The problem occurred out of the blue or right after
installation of a 128K to 51 2K RAM upgrade.
Probable diagnosis: The problem is on the logic board.
Solution: Check/replace the RAM chip at board location G12.
Approximate cost of repairing it yourself:
$1.50
1 41 -256K 1 SONS RAM chip
1.50
2 hours
Approximate third-party repair cost:
$135.00
1 41 -256K 1 SONS RAM chip
5.00
2 hours labor
130.00
Approximate dealer repair cost:
$358.33
1 new logic board (51 2 K)
288.33
1 hour labor
70.00
740
The Dead Mac Scrolls
Symptoms: On shutdown, the computer momentarily makes a
loud burping noise. Otherwise, it seems OK.
Probable diagnosis: The problem is on the analog board.
Solution: Replace the 4N35 optoisolator 1C (6-pin DIP, 3550V) at
board reference U3.
Approximate cost of repairing it yourself:
69d
1 4N35 optoisolator
.69
1 hour
Approximate third-party repair cost:
$70.00
1 4N35 optoisolator
5.00
1 hour labor
65.00
Approximate dealer repair cost:
$253.33
1 new analog board 1
83.33
1 hour labor
70.00
Early Macs
141
Symptoms: On startup, the computer makes a soft ticking sound, as
though there's a time bomb inside. Once you insert a disk, the
ticking noise stops. After that, the computer seems OK.
Probable diagnosis: The ticking noise is characteristic of certain
800K disk drives (part number MFD-51 W-03). It's insignificant.
Solution: Ignore the ticking noise, or replace the disk drive.
Approximate cost of repairing it yourself:
zip
Approximate third-party repair cost:
$160.00
1 800K DD swap
95.00
1 hour labor
65.00
Approximate dealer repair cost:
$300.00
1 new 800K drive assembly 230.00
1 hour labor
70.00
142
The Dead Mac Scrolls
Symptoms: On a Mac 128K, 512K or 512Ke, there's no startup
bong and no video display. You're sure that the problem isn't on the
analog board, because the analog board works perfectly in another
Mac.
Probable diagnosis: The problem is on the 128K or 51 2K logic
board.
Solution: Check/replace the TSM PAL (Apple part 342-0254-A) at
board location D1 and the LAG PAL (Apple part 342-0251 -A) at El.
Approximate cost of repairing it yourself:
$20.00
1 PAL chip
20.00
2 hours
Approximate third-party repair cost:
$170.00
1 PAL chip
40.00
2 hours labor
130.00
Approximate dealer repair cost:
$358.33
1 new logic board (512 K)
288.33
1 hour labor
70.00
Early Macs
143
Symptoms: On a Mac Plus there's no startup bong and no video
display. You're sure that the problem isn't on the analog board,
because the analog board works perfectly in another Mac.
Probable diagnosis: The problem is on the Mac Plus logic board.
Solution: Check/replace the LAG PAL (Apple part 342-051 5-A) at
board location El, the BMU2 PAL (Apple part 342-0520-A) at E2
and the CAS PAL (Apple part 342-051 9A) at E3.
Approximate cost of repairing it yourself:
$20.00
1 PAL chip
20.00
2 hours
Approximate third-party repair cost:
$170.00
1 PAL chip
40.00
2 hours labor
130.00
Approximate dealer repair cost:
$445.00
1 new logic board (Plus)
375.00
1 hour labor
70.00
CHAPTER 2
MAC SE AND $E/30
/
Mac SE and SE/30
145
Symptoms: There is a herringbone pattern throughout the display.
Otherwise, the computer is usable.
Typical history: The computer is an original (early model) SE.
Probable diagnosis: The problem is on the analog board.
Solution: Replace the original flyback transformer (Apple part
157-0042A) at board reference T2 with a later type (157-0042C).
Approximate cost of repairing it yourself:
$21.00
1 flyback transformer
21.00
1 hour
Approximate third-party repair cost:
$107.00
1 flyback transformer
42.00
1 hour labor
65.00
Approximate dealer repair cost:
$305.00
1 new analog board 235.00
1 hour labor
70.00
146
The Dead Mac Scrolls
Symptoms: The computer is excessively loud and/or the display
intermittently jitters and shakes. Otherwise, the computer is usable.
Typical History: The computer is an original (early model) SE.
Probable diagnosis: The problem is on the analog board.
Solution: Replace the original crossflow fan at board reference B1
with a brushless 1 2VDC boxer fan.
Approximate cost of repairing it yourself:
$15.00
1 brushless 1 2VDC boxer fan
15.00
1 hour
Approximate third-party repair cost:
$105.00
1 fan upgrade kit
40.00
1 hour labor
65.00
Approximate dealer repair cost:
$305.00
1 new analog board 235.00
1 hour labor
70.00
Mac SE and SE/30
147
Symptoms: There is no startup bong. The computer makes a
dreadful hissing/sizzling noise. The display is dark.
Probable diagnosis: The problem is on the analog board.
Solution: Check/replace the barrel rectifier (GI854, R-SI, 600V, 3A)
at board reference CR2. If shorted (0.00 to 0.01 Q), substitute a
heavy-duty replacement part (MR824, R-SI, 400V, 5A) to avoid
future repairs.
CR2 j| |\
Approximate cost of repairing it yourself:
$5.00
1 MR824 rectifier
5.00
1 hour
Approximate third-party repair cost:
$75.00
1 MR824 rectifier
10.00
1 hour labor
65.00
Approximate dealer repair cost:
$305.00
1 new analog board 235.00
1 hour labor
70.00
148
The Dead Mac Scrolls
Symptoms: There is no startup bong. The display is dark. The
computer appears to be completely dead (no dreadful
hissing/sizzling noise).
Probable diagnosis: The problem is on the analog board.
Solution: Check/replace the barrel rectifier (GI854, R-SI, 600V, 3A)
at board reference CR3 (shorted). Use a heavy-duty replacement
part (MR824, R-SI, 400V, 5A) to avoid future repairs. Also
check/replace the BU406D transistor (horizontal output) at board
reference Q2 (burned). If that doesn't do it, replace the flyback
transformer at board reference T2. Also see the next entry.
CR3
I
Approximate cost of repairing it yourself:
$31.00
1 MR824 rectifier
5.00
1 hour
1 BU406D transistor
5.00
1 flyback transformer
21.00
Approximate third-party repair cost:
$127.00
miscellaneous parts
62.00
1 hour labor
65.00
Approximate dealer repair cost:
$305.00
1 new analog board 235.00
1 hour labor
70.00
Mac SE and SE/30
149
Symptoms: There is no startup bong. The display is black. The
computer is completely dead (no fan or other noise).
Probable diagnosis: The problem may be in the Sony CR44 power
supply.
Solution: Check/replace the on/off switch (Sony part 1-571-035-1 1)
or substitute a generic switch made for panel cutouts measuring
1 .1 25 inches x 1 .072 inches. Also see the prior entry.
I \
SONY V
CR44 i
Approximate cost of repairing it yourself:
$3.00
1 on/off switch
3.00
1 hour
Approximate third-party repair cost:
$71.00
1 on/off switch
6.00
1 hour labor
65.00
Approximate dealer repair cost:
$328.33
1 new power supply 258.33
1 hour labor
70.00
150
The Dead Mac Scrolls
Symptoms: On startup, the computer bongs, the fan turns and the
internal hard drive spins (when present), but the blinking disk icon
never appears. The display is dark. Turning up the front-panel
brightness control has no effect.
Probable diagnosis: The problem is on the analog board.
Solution: Check/replace open resistor R22 (470K, V2-watt, 5%).
Approximate cost of repairing it yourself:
19(f
1 ^/^-watt resistor
.19
1 hour
Approximate third-party repair cost:
$70.00
1 /4-watt resistor
5.00
1 hour labor
65.00
Approximate dealer repair cost:
$305.00
1 new analog board 235.00
1 hour labor
70.00
Mac SE and SE/30
151
Symptoms: The right side of the display wiggles (like a worm). There
is a loud sizzling noise.
Typical history: The sizzling started right after the analog board was
replaced.
Probable diagnosis: The problem is a bad ground.
Solution: Verify that the green ground wire (attached to the power
supply) is connected to the chassis.
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$305.00
1 new analog board 235.00
1 hour labor 70.00
152
The Dead Mac Scrolls
Symptoms: The display is vertically compressed. It lacks height.
Typical history: The symptoms appeared immediately after the
computer was board-swapped (not out of the blue).
Probable diagnosis: The new analog board is out of adjustment.
Solution: Adjust variable resistor R4 (labeled Height) until the
display measures 4.75 inches high.
Height
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$305.00
1 new analog board 235.00
1 hour labor 70.00
Mac SE and SE/30
153
Symptoms: The display is vertically expanded. It's too tall.
Typical history: The symptoms appeared immediately after the
computer was board-swapped (not out of the blue).
Probable diagnosis: The new analog board is out of adjustment.
Solution: Adjust variable resistor R4 (labeled Height) until the
display measures 4.75 inches high.
I leight
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$305.00
1 new analog board 235.00
1 hour labor 70.00
154
The Dead Mac Scrolls
Symptoms: The display is horizontally compressed. It lacks width.
Typical history: The symptoms appeared immediately after the
computer was board-swapped (not out of the blue).
Probable diagnosis: The new analog board is out of adjustment.
Solution: Adjust tunable coil L2 (labeled Width) until the display
measures 7.1 1 inches wide.
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$305.00
1 new analog board 235.00
1 hour labor 70.00
Mac SE and SE/30
155
Symptoms: The display is horizontally expanded. It's too wide.
Typical history: The symptoms appeared immediately after the
computer was board-swapped (not out of the blue).
Probable diagnosis: The new analog board is out of adjustment.
Solution: Adjust tunable coil L2 (labeled Width) until the display
measures 7.1 1 inches wide.
^ ^0^ Width
BooEQ
r
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
1 hour labor
65.00
$65.00
Approximate dealer repair cost:
1 new analog board
1 hour labor
235.00
70.00
$305.00
156
The Dead Mac Scrolls
Symptoms: The right side of the display shakes (moves in and out)
during a disk drive event or whenever a window is opened.
Probable diagnosis: The problem is on the analog board.
Solution: Replace the barrel rectifier (GI854, R-SI, 600V, 3A) at
board reference CR2 on the analog board. Use a heavy-duty
replacement part (MR824, R-SI, 400V, 5A) to avoid future repairs. If
that doesn't do it, see the next entry.
Approximate cost of repairing it yourself:
1 MR824 rectifier
5.00
$5.00
1 hour
Approximate third-party repair cost:
1 MR824 rectifier
10.00
$75.00
1 hour labor
65.00
Approximate dealer repair cost:
1 new analog board 235.00
$305.00
1 hour labor
70.00
Mac SE and SE/30
157
Symptoms: Even after CR2 has been replaced, the right side of the
display moves in and out during a disk drive event or whenever a
window is opened.
Probable diagnosis: The problem is on the analog board.
Solution: Replace the horizontal output transistor (BU406D) at
board reference Q2. Also see the prior entry.
Q2-ij
Approximate cost of repairing it yourself:
$5.00
1 BU406D transistor
5.00
1 hour
Approximate third-party repair cost:
$75.00
1 BU406D transistor
10.00
1 hour labor
65.00
Approximate dealer repair cost:
$305.00
1 new analog board 235.00
1 hour labor
70.00
158
The Dead Mac Scrolls
Symptoms: On an SE/30, the display intermittently blinks out.
White lines intermittently flash across the display. Tapping on the
cabinet causes the problem to recur.
Probable diagnosis: The problem is a bad connection between the
CRT socket board and the CRT.
Solution: Check the CRT socket board for a snug fit. Secure the CRT
socket board to the neck of the CRT with a dab of hot glue.
Approximate cost of repairing it yourself:
1 hour
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
Mac SE and SE/30
159
Symptoms: The video display exhibits poor linearity. Items on the
left are wider than items on the right.
Probable diagnosis: The problem is on the analog board.
Solution: Replace high-frequency capacitor CIS (3.9p NP 25/35V
HF). Use a heavy-duty replacement part (3.9p NP 100V HF) to avoid
future repairs.
Approximate cost of repairing it yourself:
$3.00
1 3.9|i NP lOOV FHF capacitor
3.00
1 hour
Approximate third-party repair cost:
$71.00
1 3. 9p. NP lOOV HF capacitor
6.00
1 hour labor
65.00
Approximate dealer repair cost:
$305.00
1 new analog board
235.00
1 hour labor
70.00
160
The Dead Mac Scrolls
Symptoms: A few minutes after startup, a vertical line appears on
the right side of the video display, accompanied by diagonal lines. If
the power isn't switched off, the display gets darker and darker and
the Mac begins to smoke.
Typical history: Prior to this, the display exhibited poor linearity.
Probable diagnosis: The problem is on the analog board.
Solution: Replace high-frequency capacitor CIS (3.9)i NP 25/35V
HF). Use a heavy-duty replacement part (3.9p NP 100V HF) to avoid
future repairs. Also, check/replace yoke plug PI (may be burned).
Approximate cost of repairing it yourself:
$3.00
1 3.9p NP 100V HF capacitor
3.00
1 hour
Approximate third-party repair cost:
$71.00
1 3. 9p NP 100V HF capacitor
6.00
1 hour labor
65.00
Approximate dealer repair cost:
$305.00
1 new analog board 235.00
1 hour labor
70.00
Mac SE and SE/30
161
Symptoms: On startup, the computer bongs but the normal video
display does not appear. Instead there is a very br/g/?t vertical line. If
the power isn't switched off, the Mac begins to smoke.
Probable diagnosis: The problem is on the analog board.
Solution: Replace high-frequency capacitor Cl 5 (3.9p NP 25/35V
HF). Use a heavy-duty replacement part (3.9p NP 100V HF) to avoid
future repairs. Also, check/replace yoke plug PI (may be burned).
Approximate cost of repairing it yourself:
1 3.9p NP lOOV HF capacitor
3.00
$3.00
1 hour
Approximate third-party repair cost:
1 3.9p NP 100V HF capacitor
1 hour labor
6.00
65.00
$71.00
Approximate dealer repair cost:
1 new analog board
1 hour labor
235.00
70.00
$305.00
162
The Dead Mac Scrolls
Symptoms: On startup, the computer bongs but the normal video
display does not appear. Instead there is a relatively dim vertical
line. If the power isn't switched off, the Mac begins to smoke.
Probable diagnosis: The problem is on the analog board.
Solution: Check/replace burned resistor R19 (220Q, l/ 4 -watt 5%). To
avoid immediate recurrence, vacuum-desolder linearity coil L3. Use
100% fresh solder (don't just reheat the joint).
9
Approximate cost of repairing it yourself:
1 220Q, ^4-watt 5% resistor
.09
9 ^
1 hour
Approximate third-party repair cost:
1 220Q, y4-watt 5% resistor
1 hour labor
5.00
65.00
$70.00
Approximate dealer repair cost:
1 new analog board
1 hour labor
235.00
70.00
$305.00
Mac SE and SE/30
163
Symptoms: After a short while, the video display collapses to a
vertical line. Tapping on the left side of the cabinet temporarily
restores the full display or causes it to flash.
Probable diagnosis: The problem is a cracked solder joint on the
analog board.
Solution: Check/resolder pin 4 (top, horizontal yoke) of the PI
connector and check/resolder tunable coil L2 (marked Width).
L2
PI
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
1 hour labor
65.00
$65.00
Approximate dealer repair cost:
1 new analog board
1 hour labor
235.00
70.00
$305.00
164
The Dead Mac Scrolls
Symptoms: After a short while, the video display collapses to a
horizontal line. Tapping on the left side of the cabinet temporarily
restores the full display or causes it to flash.
Probable diagnosis: The problem is a cracked solder joint on the
analog board.
Solution: Check/resolder pin 1 (bottom, vertical yoke) of the PI
connector. Also see the next entry.
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$305.00
1 new analog board 235.00
1 hour labor 70.00
Mac SE and SE/30
165
Symptoms: On startu|D, the computer bongs but the normal video
display does not appear. Instead there is a very br/gbf horizontal
line.
Typical history: The problem happened out of the blue. The
display had not previously been intermittent.
Probable diagnosis: The problem is on the analog board.
Solution: Check/replace the TDA 1170 1C (12-pin TV, vertical
deflection) at board reference U2. Also see the prior entry.
\
U2
Approximate cost of repairing it yourself:
$5.28
1 TDA 1 1 70 chip
5.28
1 hour
Approximate third-party repair cost:
$75.56
1 TDA 1 1 70 chip
10.56
1 hour labor
65.00
Approximate dealer repair cost:
$305.00
1 new analog board 235.00
1 hour labor
70.00
166
The Dead Mac Scrolls
Symptoms: On startup, the computer bongs and the blinking disk
icon appears, but the video display is much too bright. Scan lines are
visible even when the brightness control is turned down.
Typical history: The symptoms appeared out of the blue (not
immediately after the computer was board-swapped).
Probable diagnosis: The problem is on the analog board.
Solution: Check/replace open resistors R20 (lOOK, V2-watt, 5%),
and/or R21 (1M, V2-watt, 5%). Also see the next entry.
I
□
R20
R21
V
Approximate cost of repairing it yourself:
1 y2-watt resistor
.19
1 hour
19 ^
Approximate third-party repair cost:
1 V2-watt resistor
1 hour labor
$70.00
5.00
65.00
Approximate dealer repair cost:
1 new analog board
1 hour labor
$305.00
235.00
70.00
Mac SE and SE/30
-iSJ
Symptoms: On startup, the computer bongs and the blinking disk
icon appears, but the video display is much too bright. Scan lines are
visible even when the brightness control is turned down.
Typical history: The symptoms appeared immediately after the
computer was board-swapped (not out of the blue).
Probable diagnosis: The new analog board is out of adjustment.
Solution: Adjust variable resistor R24 (labeled Cut-off) until the scan
lines disappear. If that doesn't do it, see the prior entry.
Cut-off
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$305.00
1 new analog board 235.00
1 hour labor 70.00
168
The Dead Mac Scrolls
Symptoms: There is raster but no video display. The raster is very
bright. Horizontal scan lines are visible.
Probable diagnosis: The problem is on the analog board:
Solution: Replace the SN74LS38N chip (14-pin DIP, quad 2-input
HAND) at board reference Ul. If that's not it, see the next entry.
\
Ul
Approximate cost of repairing it yourself:
35it
1 SN74LS38N chip
.35
1 hour
Approximate third-party repair cost:
$70.00
1 SN74LS38N chip
5.00
1 hour labor
65.00
Approximate dealer repair cost:
$305.00
1 new analog board 235.00
1 hour labor
70.00
Mac SE and SE/30
169
Symptoms: There is raster but no video display. The raster is very
bright. Horizontal scan lines are visible.
Probable diagnosis: The problem is on the CRT socket board.
Solution: Check/replace the 2N 3904 transistor (NPN, 0.6A, V2-
watt, TO-92) at board reference Q1 . Depending on the board
revision Q1 could either be on the left or on the right. Also see the
prior entry.
^ "
\
Qi*
V
Approximate cost of repairing it yourself:
10^
1 2N 3904 transistor
.10
1 hour
Approximate third-party repair cost:
$70.00
1 2N 3904 transistor
5.00
1 hour labor
65.00
Approximate dealer repair cost:
$87.00
1 new Apple CRT socket board
17.00
1 hour labor
70.00
170
The Dead Mac Scrolls
Symptoms: The top half of the video display is somewhat squashed.
There's a bright white line in the middle. The bottom half of the
display is black.
Probable diagnosis: The problem is on the analog board.
Solution: Replace the TDA 1 170 1C (12-pin TV, vertical deflection)
at board reference U2.
Approximate cost of repairing it yourself:
$5.28
1 TDA 11 70 chip
5.28
1 hour
Approximate third-party repair cost:
$75.56
1 TDA 11 70 chip
10.56
1 hour labor
65.00
Approximate dealer repair cost:
$305.00
1 new analog board 235.00
1 hour labor
70.00
Mac SE and SE/30
171
Symptoms: The bottom half of the video dis|Dlay is somewhat
squashed. There's a bright white line in the middle. The top half of
the display is black.
Probable diagnosis: The problem is on the analog board.
Solution: Replace the TDA 1170 1C (12-pin TV, vertical deflection)
at board reference U2.
Approximate cost of repairing it yourself:
$5.28
1 TDA 1 1 70 chip
5.28
1 hour
Approximate third-party repair cost:
$75.56
1 TDA 1170 chip
10.56
1 hour labor
65.00
Approximate dealer repair cost:
$305.00
1 new analog board 235.00
1 hour labor
70.00
172
The Dead Mac Scrolls
Symptoms: The bottom half of the video display is so elongated that
it disappears underneath the cabinet. Adjusting the Height control
affects the top half of the display but does not affect the bottom.
Probable diagnosis: The problem is on the analog board.
Solution: Replace the TDA 1170 1C (12-pin TV, vertical deflection)
at board reference U2.
Approximate cost of repairing it yourself:
$5.28
1 TDA 11 70 chip
5.28
1 hour
Approximate third-party repair cost:
$75.56
1 TDA 1170 chip
10.56
1 hour labor
65.00
Approximate dealer repair cost:
$305.00
1 new analog board 235.00
1 hour labor
70.00
Mac SE and SE/30
173
Symptoms: The top half of the video display is so elongated that it
disappears underneath the cabinet. Adjusting the Height control
affects the bottom half of the display but does not affect the top.
Probable diagnosis: The problem is on the analog board.
Solution: Replace the TDA 1 1 70 1C (12-pin TV, vertical deflection)
at board reference U2.
\
U2
Approximate cost of repairing it yourself:
$5.28
1 TDA 11 70 chip
5.28
1 hour
Approximate third-party repair cost:
$75.56
1 TDA 11 70 chip
10.56
1 hour labor
65.00
Approximate dealer repair cost:
$305.00
1 new analog board 235.00
1 hour labor
70.00
174
The Dead Mac Scrolls
Symptoms: A Mac SE has no startup bong. The display is filled with
a black-and-white checkerboard pattern.
Typical history: The problem occurred after completion of an
FDHD disk drive/ROM upgrade (right after you put everything back
together).
Probable diagnosis: The problem is on the logic board.
Solution: Verify that the new ROMs and the new IWM at board
locations D6, D7 and D8 are not reversed, backwards or otherwise
incorrectly installed.
A
B
C
D-
E
F
UU UU .
6 7 8
Approximate cost of repairing it yourself:
15 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$398.33
1 new logic board (SE) 328.33
1 hour labor 70.00
Mac SE and SE/30
175
Symptoms: A Mac SE/30 has no startup bong. The display is filled
with a black-and-white checkerboard pattern.
Probable diagnosis: The problem on the SE/30 logic board.
Solution: Check/reseat the ROM SIMM.
Approximate cost of repairing it yourself:
1 hour
Approximate third-party repair cost:
$130.00
2 hours labor
130.00
Approximate dealer repair cost:
$470.00
1 new logic board (SE/30)
400.00
1 hour labor
70.00
176
The Dead Mac Scrolls
Symptoms: A burning smell lingers about the computer. The
internal hard drive spins, but doesn't mount. External SCSI devices
don't mount either. Formatting software reports broken bus or bus
not terminated.
Typical history: The problem occurred when you plugged a serial
device or a parallel printer into the external SCSI port.
Probable diagnosis: The problem is on the Mac SE logic board.
Solution: Check/replace burned rectifier CRl (1N4001) at board
location B4. Also see the next entry.
Approximate cost of repairing it yourself:
10(i
1 IN4001 rectifier
.10
1 hour
Approximate third-party repair cost:
$135.00
1 IN4001 rectifier
5.00
2 hours labor
130.00
Approximate dealer repair cost:
$398.33
1 new logic board (SE)
328.33
1 hour labor
70.00
Mac SE and SE/30
777
Symptoms: The internal hard drive spins, but it doesn't mount.
External SCSI devices (that work perfectly when connected to other
Macs) don't mount either.
Typical history: The internal and external floppy drives work fine.
Except for the SCSI problem, the computer appears to be normal.
Probable diagnosis: The problem is on the Mac SE logic board.
Solution: Check/replace the SCSI chip (NCR5380, 40-pin DIP) at
board location B5-8. Also see the prior entry.
Approximate cost of repairing it yourself:
18.00
1 NCR5380
18.00
2 hours
Approximate third-party repair cost:
$166.00
1 NCR5380
36.00
2 hours labor
130.00
Approximate dealer repair cost:
$398.33
1 new logic board (SE)
328.33
1 hour labor
70.00
178
The Dead Mac Scrolls
Symptoms: On startup, the desktop appears, but neither the
keyboard nor the mouse work.
Typical history: The problem occurred when you connected or
disconnected an ADB device while the computer was on.
Probable diagnosis: The problem is on the Mac SE logic board.
Solution: Check/replace the shorted filter (Apple part 155-0007-E)
at board location A1 1 .
Approximate cost of repairing it yourself:
$14.00
1 Tokin filter
14.00
2 hours
Approximate third-party repair cost:
$158.00
1 Tokin filter
28.00
2 hours labor
130.00
Approximate dealer repair cost:
$398.33
1 new logic board (SE)
328.33
1 hour labor
70.00
Mac SE and SE/30
179
Symptoms: A Mac SE does not maintain the proper time and date.
Probable diagnosis: The problem is on the Mac SE logic board.
Solution: Check/replace the clock battery (lithium, V2AA) at board
location B4. Early models have 3V solder-in batteries with pigtail
leads. Later models have 3.6V batteries that snap into battery boxes.
Approximate cost of repairing it yourself:
$12.00
1 lithium battery (VzAA)
12.00
1 hour
Approximate third-party repair cost:
$154.00
1 lithium battery (VzAA)
24.00
2 hours labor
130.00
Approximate dealer repair cost:
$398.33
1 new logic board (SE)
328.33
1 hour labor
70.00
180
The Dead Mac Scrolls
Symptoms: A Mac SE/30 does not maintain the proper time and
date.
Probable diagnosis: The problem is on the Mac SE/30 logic board.
Solution: Check/replace the clock battery (lithium 3.6V, /^AA,
snap-in type).
Approximate cost of repairing it yourself:
$12.00
1 lithium battery (3.6V, /2AA)
12.00
1 hour
Approximate third-party repair cost:
$154.00
1 lithium battery (3.6V, V2AA)
24.00
2 hours labor
130.00
Approximate dealer repair cost:
$470.00
1 new logic board (SE/30)
400.00
1 hour labor
70.00
Mac SE and SE/30
181
Symptoms: On startup, you get a sad Mac with error code 00000001
over nnnnnnnn (where the values of n are insignificant).
Probable diagnosis: The problem is on the SE/30 logic board.
Solution: Check/reseat the ROM SIMM.
Approximate cost of repairing it yourself:
1 hour
Approximate third-party repair cost:
$130.00
2 hours labor
130.00
Approximate dealer repair cost:
$470.00
1 new logic board (SE/30)
400.00
1 hour labor
70.00
182
The Dead Mac Scrolls
Symptoms: On startup, you get a sad Mac with error code
00000002 over OOOOOOnn (where the value of nn is insignificant).
Probable diagnosis: The problem is on the SE logic board.
Solution: Check/replace SIMM 1 on 820-0176 (original) logic
boards. Check/replace SIMM 3 on 820-0250 (DIP SIMM) boards.
1
3
11 =
=1
2
4
Approximate cost of repairing it yourself:
$10.00
1 SIMM(256K)
10.00
1 hour
Approximate third-party repair cost:
$150.00
1 SIMM (256K)
20.00
2 hours labor
130.00
Approximate dealer repair cost:
$398.33
1 new logic board (SE)
328.33
1 hour labor
70.00
Mac SE and SE/30
183
Symptoms: On startup, you get a sad Mac with error code
00000002 over OOnnOOnn (where the values of nn are insignificant).
Probable diagnosis: The problem is on the SE logic board.
Solution: Checl</replace SIMM 1 on 820-0176 (original) logic
boards. Check/replace SIMM 3 on 820-0250 (DIP SIMM) boards.
uu I'M" UU
1
3
2
4
Approximate cost of repairing it yourself:
$10.00
1 SIMM(256K)
10.00
1 hour
Approximate third-party repair cost:
$150.00
1 SIMM (256K)
20.00
2 hours labor
130.00
Approximate dealer repair cost:
$398.33
1 new logic board (SE)
328.33
1 hour labor
70.00
J84
The Dead Mac Scrolls
Symptoms: On startup, you get a sad Mac with error code
00000002 over OOOOnnOO (where the value of nn is insignificant).
Probable diagnosis: The problem is on the SE logic board.
Solution: Check/replace SIMM 2 on 820-0176 (original) logic
boards. Check/replace SIMM 4 on 820-0250 (DIP SIMM) boards.
1
3
2
4
Approximate cost of repairing it yourself:
$10.00
1 SIMM (256K)
10.00
1 hour
Approximate third-party repair cost:
$150.00
1 SIMM (256K)
20.00
2 hours labor
130.00
Approximate dealer repair cost:
$398.33
1 new logic board (SE)
328.33
1 hour labor
70.00
Mac SE and SE/30
185
Symptoms: On startu|3, you get a sad Mac with error code
00000002 over nnOOnnOO (where the values of nn are insignificant).
Probable diagnosis: The problem is on the SE logic board.
Solution: Check/replace SIMM 2 on 820-0176 (original) logic
boards. Check/replace SIMM 4 on 820-0250 (DIP SIMM) boards.
1
3
2
4
Approximate cost of repairing it yourself:
$10.00
1 SIMM(256K)
10.00
1 hour
Approximate third-party repair cost:
$150.00
1 SIMM (256K)
20.00
2 hours labor
130.00
1
Approximate dealer repair cost:
$398.33
1 new logic board (SE)
328.33
1 hour labor
70.00
186
The Dead Mac Scrolls
Symptoms: On startup, you get a sad Mac with error code
00000003 over OOOOOOnn (where the value of nn is insignificant).
Probable diagnosis: The problem is on the SE logic board.
Solution: Check/replace SIMM 1 on 820-0176 (original) logic
boards. Check/replace SIMM 3 on 820-0250 (DIP SIMM) boards.
1
3
2
4
Approximate cost of repairing it yourself:
$10.00
1 SIMM(256K)
10.00
1 hour
Approximate third-party repair cost:
$150.00
1 SIMM(256K)
20.00
2 hours labor
130.00
Approximate dealer repair cost:
$398.33
1 new logic board (SE)
328.33
1 hour labor
70.00
Mac SE and SE/30
187
Symptoms: On startup, you get a sad Mac with error code
00000003 over OOnnOOnn (where the values of nn are insignificant).
Probable diagnosis: The problem is on the SE logic board.
Solution: Check/replace SIMM 1 on 820-0176 (original) logic
boards. Check/replace SIMM 3 on 820-0250 (DIP SIMM) boards.
rHXHVV>->WMXl--i
1
3
II
2
4
Approximate cost of repairing it yourself:
$10.00
1 SIMM (256K)
10.00
1 hour
Approximate third-party repair cost:
$150.00
1 SIMM(256K)
20.00
2 hours labor
130.00
Approximate dealer repair cost:
$398.33
1 new logic board (SE)
328.33
1 hour labor
70.00
188
The Dead Mac Scrolls
Symptoms: On startup, you get a sad Mac with error code
00000003 over OOOOnnOO (where the value of nn is insignificant).
Probable diagnosis: The problem is on the SE logic board.
Solution: Check/replace SIMM 2 on 820-0176 (original) logic
boards. Check/replace SIMM 4 on 820-0250 (DIP SIMM) boards.
I— □□ "M" "■■■ □0-1
2
4
Approximate cost of repairing it yourself:
$10.00
1 SIMM(256K)
10.00
1 hour
Approximate third-party repair cost:
$150.00
1 SIMM (256K)
20.00
2 hours labor
130.00
Approximate dealer repair cost:
$398.33
1 new logic board (SE)
328.33
1 hour labor
70.00
Mac SEand SE/30
189
Symptoms: On startup, you get a sad Mac with error code
00000003 over nnOOnnOO (where the values of nn are insignificant).
Probable diagnosis: The problem is on the SE logic board.
Solution: Check/replace SIMM 2 on 820-0176 (original) logic
boards. Check/replace SIMM 4 on 820-0250 (DIP SIMM) boards.
Approximate cost of repairing it yourself:
$10.00
1 SIMM (256K)
10.00
1 hour
Approximate third-party repair cost:
$150.00
1 SIMM (256K)
20.00
2 hours labor
130.00
Approximate dealer repair cost:
$398.33
1 new logic board (SE)
328.33
1 hour labor
70.00
190
The Dead Mac Scrolls
Symptoms: On startup, you get a sad Mac with error code
00000004 over OOOOOOnn (where the value of nn is insignificant).
Probable diagnosis: The problem is on the Mac SE logic board.
Solution: Check/replace SIMM 3 on 820-0176 (original) logic
boards. Check/replace SIMM 1 on 820-0250 (DIP SIMM) boards.
I uu "■'I uu I
1
3
li
2
4
Approximate cost of repairing it yourself:
$10.00
1 SIMM (256K)
10.00
1 hour
Approximate third-party repair cost:
$150.00
1 SIMM(256K)
20.00
2 hours labor
130.00
Approximate dealer repair cost:
$398.33
1 new logic board (SE)
328.33
1 hour labor
70.00
Mac SE and SE/30
191
Symptoms: On startup, you get a sad Mac with error code
00000004 over OOnnOOnn (where the values of nn are insignificant).
Probable diagnosis: The problem is on the Mac SE logic board.
Solution: Check/replace SIMM 3 on 820-0176 (original) logic
boards. Check/replace SIMM 1 on 820-0250 (DIP SIMM) boards.
1
3
I II I 'IMII IIHIIII I II I I
- 2
Approximate cost of repairing it yourself:
$10.00
1 SIMM (256K)
10.00
1 hour
Approximate third-party repair cost:
$150.00
1 SIMM(256K)
20.00
2 hours labor
130.00
Approximate dealer repair cost:
$398.33
1 new logic board (SE)
328.33
1 hour labor
70.00
192
The Dead Mac Scrolls
Symptoms: On startup, you get a sad Mac with error code
00000004 over OOOOnnOO (where the value of nn is insignificant).
Probable diagnosis: The problem is on the Mac SE logic board.
Solution: Check/replace SIMM 4 on 820-0176 (original) logic
boards. Check/replace SIMM 2 on 820-0250 (DIP SIMM) boards.
1
3
imniBB:
2
4
Approximate cost of repairing it yourself:
$10.00
1 SIMM (256K)
10.00
1 hour
Approximate third-party repair cost:
$150.00
1 SIMM (256K)
20.00
2 hours labor
130.00
Approximate dealer repair cost:
$398.33
1 new logic board (SE)
328.33
1 hour labor
70.00
Mac SE and SE/30
193
Symptoms: On startup, you get a sad Mac with error code
00000004 over nnOOnnOO (where the values of nn are insignificant).
Probable diagnosis: The problem is on the Mac SE logic board.
Solution: Check/replace SIMM 4 on 820-0176 (original) logic
boards. Check/replace SIMM 2 on 820-0250 (DIP SIMM) boards.
I— □□ ’M” na-i
1
3
II
Approximate cost of repairing it yourself:
$10.00
1 SIMM (256K)
10.00
1 hour
Approximate third-party repair cost:
$150.00
1 SIMM (256K)
20.00
2 hours labor
130.00
Approximate dealer repair cost:
$398.33
1 new logic board (SE)
328.33
1 hour labor
70.00
194
The Dead Mac Scrolls
Symptoms: On startup, you get a sad Mac with error code
00000005 over OOOOOOnn (where the value of nn is insignificant).
Probable diagnosis: The problem is on the Mac SE logic board.
Solution: Check/replace SIMM 3 on 820-0176 (original) logic
boards. Check/replace SIMM 1 on 820-0250 (DIP SIMM) boards.
LIU II— II Hill yy
1
3
II
2
4
Approximate cost of repairing it yourself:
$10.00
1 SIMM (256K)
10.00
1 hour
Approximate third-party repair cost:
$150.00
1 SIMM (256K)
20.00
2 hours labor
130.00
Approximate dealer repair cost:
$398.33
1 new logic board (SE)
328.33
1 hour labor
70.00
Mac SEandSE/30
195
Symptoms: On startup, you get a sad Mac with error code
00000005 over OOnnOOnn (where the values of nn are insignificant).
00000005
00800008
Probable diagnosis: The problem is on the Mac SE logic board.
Solution: Check/replace SIMM 3 on 820-0176 (original) logic
boards. Check/replace SIMM 1 on 820-0250 (DIP SIMM) boards.
i— □□ "MM" "1“ DCH
1
3
nuiieii
2
4
Approximate cost of repairing it yourself:
$10.00
1 SIMM (256K)
10.00
1 hour
Approximate third-party repair cost:
$150.00
1 SIMM (256K)
20.00
2 hours labor
130.00
Approximate dealer repair cost:
$398.33
1 new logic board (SE)
328.33
1 hour labor
70.00
196
The Dead Mac Scrolls
Symptoms: On startup, you get a sad Mac with error code
00000005 over OOOOnnOO (where the value of nn is insignificant).
Probable diagnosis: The problem is on the Mac SE logic board.
Solution: Check/replace SIMM 4 on 820-0176 (original) logic
boards. Check/replace SIMM 2 on 820-0250 (DIP SIMM) boards.
I— □□ “M" "M" DD-1
1
3
— 2
— 4
Approximate cost of repairing it yourself:
$10.00
1 SIMM (256K)
10.00
1 hour
Approximate third-party repair cost:
$150.00
1 SIMM(256K)
20.00
2 hours labor
130.00
Approximate dealer repair cost:
$398.33
1 new logic board (SE)
328.33
1 hour labor
70.00
Mac SE and SE/30
197
Symptoms: On startup, you get a sad Mac with error code
00000005 over nnOOnnOO (where the values of nn are insignificant).
Probable diagnosis: The problem is on the Mac SE logic board.
Solution: Check/replace SIMM 4 on 820-0176 (original) logic
boards. Check/replace SIMM 2 on 820-0250 (DIP SIMM) boards.
Approximate cost of repairing it yourself:
$10.00
1 SIMM (256K)
10.00
1 hour
Approximate third-party repair cost:
$150.00
1 SIMM (256K)
20.00
2 hours labor
130.00
Approximate dealer repair cost:
$398.33
1 new logic board (SE)
328.33
1 hour labor
70.00
198
The Dead Mac Scrolls
Symptoms: On startup, you get a sad Mac with error code
OOOOOOOE over OOOOOOnn (where the value of nn is insignificant).
Probable diagnosis: The problem is on the SE logic board.
Solution: Check/replace SIMM 1 on 820-0176 (original) logic
boards. Check/replace SIMM 3 on 820-0250 (DIP SIMM) boards.
1
3
I II I I II I I
HHUiiigii
2
4
Approximate cost of repairing it yourself:
$10.00
1 SIMM(256K)
10.00
1 hour
Approximate third-party repair cost:
$150.00
1 SIMM (256K)
20.00
2 hours labor
130.00
Approximate dealer repair cost:
$398.33
1 new logic board (SE)
328.33
1 hour labor
70.00
Mac SE and SE/30
199
Symptoms: On startup, you gel a sad Mac with error code
OOOOOOOE over OOnnOOnn (where the values of nn are insignificant).
Probable diagnosis: The problem is on the SE logic board.
Solution: Check/replace SIMM 1 on 820-0176 (original) logic
boards. Check/replace SIMM 3 on 820-0250 (DIP SIMM) boards.
2
4
Approximate cost of repairing it yourself:
$10.00
1 SIMM (256K)
10.00
1 hour
Approximate third-party repair cost:
$150.00
1 SIMM (256K)
20.00
2 hours labor
130.00
Approximate dealer repair cost:
$398.33
1 new logic board (SE)
328.33
1 hour labor
70.00
200
The Dead Mac Scrolls
Symptoms: On startup, you get a sad Mac with error code
OOOOOOOE over OOOOnnOO (where the value of nn is insignificant).
Probable diagnosis: The problem is on the SE logic board.
Solution: Check/replace SIMM 2 on 820-0176 (original) logic
boards. Check/replace SIMM 4 on 820-0250 (DIP SIMM) boards.
Approximate cost of repairing it yourself:
$10.00
1 SIMM(256K)
10.00
1 hour
Approximate third-party repair cost:
$150.00
1 SIMM(256K)
20.00
2 hours labor
130.00
Approximate dealer repair cost:
$398.33
1 new logic board (SE)
328.33
1 hour labor
70.00
Mac SE and SE/30
201
Symptoms: On startup, you get a sad Mac with error code
OOOOOOOE over nnOOnnOO (where the values of nn are insignificant).
ooeeeeeE
Probable diagnosis: The problem is on the SE logic board.
Solution: Check/replace SIMM 2 on 820-0176 (original) logic
boards. Check/replace SIMM 4 on 820-0250 (DIP SIMM) boards.
Approximate cost of repairing it yourself:
$10.00
1 SIMM(256K)
10.00
1 hour
Approximate third-party repair cost:
$150.00
1 SIMM (256K)
20.00
2 hours labor
130.00
Approximate dealer repair cost:
$398.33
1 new logic board (SE)
328.33
1 hour labor
70.00
202
The Dead Mac Scrolls
Symptoms: On startup, the internal 20 MB hard drive peeps twice,
then you get a sad Mac with error code OOOOOOOF over 00000003.
Probable diagnosis: The internal hard drive (MiniScribe 8425S) has
a bad driver map, bad partition signature or bad directory block.
Solution: Remove the internal hard drive from the Mac SE and
install it in an external SCSI case. Boot the SE from a floppy disk,
then after the desktop appears, switch on the external case.
To repair the malfunctioning MiniScribe drive (50/50 chance of
success), launch DiskManager Mac version 2.24, and choose Test
Drive from the Defect Management menu. If the test results
indicate that bad blocks were found and rewritten, but the drive still
won't mount, reformat the drive.
If the format operation fails, quit DMM and choose Restart from the
Finder's Special menu. When the Finder's menu bar reappears, try
holding down the mouse button. FHolding down the mouse button
will often mount a drive in these cases, even when the format
operation failed.
If holding down the mouse button doesn't mount the drive, but the
Finder indicates. This is not a Macintosh disk. Do you want to
initialize it?, click OK. If any of these procedures mounts the drive,
it'll be fine. It'll work as well as it ever did, for an indefinite period of
time.
Mac SE and SE/30
203
Approximate cost of repairing it yourself:
$49.95 1
1 DiskManager Mac (street price)
49.95
1 hour
Approximate third-party repair cost:
$85.00
20 MB @ 4.25 per MB
85.00
Approximate dealer repair cost:
$558.33
1 new 3.5-inch 20 MB HDA 488.33
1 hour labor
70.00
204
The Dead Mac Scrolls
Symptoms: On startup, you get part of a sad Mac with error code
0 0 0 0 over 0_F _0_F.
Probable diagnosis: The problem is on the Mac SE logic board.
Solution: Check/relatch SIMM 1 on 820-01 76 (original) logic
boards. Check/relatch SIMM 3 on 820-0250 (DIP SIMM) boards. If
the latches are broken, replace the SIMM socket.
1
3
2
4
Approximate cost of repairing it yourself:
$12.00
1 SIMM socket
12.00
2 hours
Approximate third-party repair cost:
$154.00
1 SIMM socket
24.00
2 hours labor
130.00
Approximate dealer repair cost:
$398.33
1 new logic board (SE)
328.33
1 hour labor
70.00
Mac SE and SE/30
205
Symptoms: On startup, you get part of a sad Mac with error code
0_0_0_5 over F_0_F_0.
Probable diagnosis: The problem is on the Mac SE logic board.
Solution: Check/relatch SIMM 4 on 820-0176 (original) logic
boards. Check/relatch SIMM 2 on 820-0250 (DIP SIMM) boards. If
the latches are broken, replace the SIMM socket.
1
3
ffll
=1
2
4
Approximate cost of repairing it yourself:
$12.00
1 SIMM socket
12.00
2 hours
Approximate third-party repair cost:
$154.00
1 SIMM socket
24.00
2 hours labor
130.00
Approximate dealer repair cost:
$398.33
1 new logic board (SE)
328.33
1 hour labor
70.00
206
The Dead Mac Scrolls
Symptoms: On startup, the display fills with vertical bars and the
smiling Mac never goes away. It looks like the little guy is in jail.
Typical history: The problem occurred right after memory upgrade
from 1 MB to 2.5 MB.
Probable diagnosis: The problem is on the Mac SE logic board. The
1 MB SIMMs are in the wrong row.
Solution: Check/reinstall the SIMMs. On 820-0176 (original) logic
boards, the 1 MB SIMMs go in sockets 1 and 2. On 820-0250 (DIP
SIMM) logic boards, the 1 MB SIMMs go in sockets 3 and 4.
I I II I »■" I II I I
1
3
I|
2
4
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$130.00
2 hours labor 130.00
Approximate dealer repair cost:
$398.33
1 new logic board (SE) 328.33
1 hour labor 70.00
Mac SE and SE/30
207
Symptoms: On startup, the computer makes a tweeting noise.
Typical history: The problem occurred right after a memory
upgrade.
Probable diagnosis: The problem is on the Mac SE logic board. One
of the SIMMs is bad.
Solution: Check the SIMMs by substitution.
i— □□ "M" Dd-i
1
3
2
4
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$130.00
2 hours labor 1 30.00
Approximate dealer repair cost:
$398.33
1 new logic board (SE) 328.33
1 hour labor 70.00
208
The Dead Mac Scrolls
Symptoms: On startup, the internal 20 MB drive spins but does not
mount. If you boot from a floppy disk, third-party formatting software
intermittently reports broken bus or bus not terminated.
Typical history: The drive was just serviced, or it was transferred to
the Mac SE from an Apple HD20SC (where it worked fine).
Probable diagnosis: There are no terminators on the hard drive's
embedded SCSI controller card.
Solution: Install/replace the dual in-line terminators (220/330Q,
8-pin SIP) at board references RP1, RP2 and RP3. Be sure to
observe polarity (the dot or the stripe)! Also see the next entry.
RPl
•RP3
Approximate cost of repairing it yourself:
$1.00
3 220/330 terminators
1.00
30 min.
Approximate third-party repair cost:
$85.00
20 MB @ 4.25 per MB
85.00
Approximate dealer repair cost:
$558.33
1 new 3.5-inch 20 MB HDA 488.33
1 hour labor
70.00
Mac SE and SE/30
209
Symptoms: On startup, the internal 20 MB drive spins but does not
mount. Instead, you get the blinking floppy-disk icon. If you boot
from a floppy disk, third-party formatting software intermittently
reports broken bus or bus not terminated.
Typical history: This drive was just serviced, or it was transferred
from an external Apple HD20SC (where it worked fine).
.^ir'Vh
*-V,> ■r,™-:
Probable diagnosis: A fuse is blown on the hard drive's embedded
SCSI controller card.
Solution: Check/replace the pigtail fuse (Pico, 1 A) at board
reference FI . Also see the prior entry.
Approximate cost of repairing it yourself:
$2.00
1 1A Pico fuse 2.00
30 min.
Approximate third-party repair cost:
$85.00
20 MB @ 4.25 per MB 85.00
Approximate dealer repair cost:
$558.33
1 new 3.5-inch 20 MB HDA 488.33
1 hour labor 70.00
210
The Dead Mac Scrolls
Symptoms: On startup, the internal 20 MB drive spins but does not
mount. Instead, you get the blinking floppy-disk icon. Third-party
formatting software reports error during inquiry command.
Typical history: The problem occurred at the same time as
unrelated upgrade work, right after you put everything back
together.
Probable diagnosis: The SCSI data cable is loose, or one of the wires
is internally broken.
Solution: Check/replace the SCSI data cable.
Approximate cost of repairing it yourself:
$4.75
1 S50-1 8-S socket ribbon cable
4.75
30 min.
Approximate third-party repair cost:
$85.00
20 MB @ 4.25 per MB
85.00
Approximate dealer repair cost:
$558.33
1 new 3.5-inch 20 MB HDA 488.33
1 hour labor
70.00
Mac SE and SE/30
211
Symptoms: The display is tilted. Other than that, the Mac is usable.
Typical history: The symptoms appeared immediately after the
computer was board-swapped or serviced (not out of the blue).
Probable diagnosis: The yoke clamp (on the neck of the CRT) is
loose.
Solution: Adjust/rotate the yoke for a square picture.
Yoke
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
1 hour labor
65.00
$65.00
Approximate dealer repair cost:
1 new CRT
1 hour labor
235.00
70.00
$305.00
212
The Dead Mac Scrolls
Symptoms: The display isn't rectangular. One or more of the edges
is bowed. Other than that, the Mac is usable.
Typical history: The problem occurred right after completion of
upgrade or service work.
Probable diagnosis: One of the yoke magnets is loose.
Solution: Identify/adjust the loose yoke magnet.
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
Mac SE and SE/30
213
Symptoms: There's no startup bong and no beep (or other) sound.
Otherwise, the raster is normal, and the computer is usable.
Typical history: The problem occurred shortly after installing a
memory upgrade, an FDHD disk drive/ROM upgrade or an
expansion card into the computer.
Probable diagnosis: The problem is on the logic board. The speaker
cable is loose or disconnected.
Solution: Remove the logic board. Plug the speaker cable into J11.
1 Approximate cost of repairing it yourself:
15 min.
Approximate third-party repair cost:
$65.00
1 hour labor
65.00
Approximate dealer repair cost:
$148.00
1 front bezel/speaker assembly
78.00
1 hour labor
70.00
214
The Dead Mac Scrolls
Symptoms: The upper disk drive doesn't work.
Typical history: The problem occurred right after completion of a
memory upgrade or with the installation of an expansion card (right
after you put everything back together).
Probable diagnosis: During installation, the upper disk drive data
cable worked loose.
Solution: Check the disk drive end of the data cable for a snug fit.
Loose
Approximate cost of repairing it yourself:
15 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$383.33
1 new disk drive 313.33
1 hour labor 70.00
Mac SE and SE/30
215
Symptoms: The video display is out of focus. Other than that, the
computer is usable.
Typical history: The symptoms appeared out of the blue (not
immediately after the computer was board-swapped).
Probable diagnosis: The problem is on the analog board.
Solution: Check/replace open resistor R26 (1MQ, V2-watt, 5%).
Also, see the next entry.
AB< I >! r ( .1 UtKl MNOKiRS 1 1 /V
WHY/A9C DCICUliMMNOIX;
RStUV.VXY/ABCDEfGHlJXLV
rjOeQRSTLT-fV^'XYZ ABCnifOO
iw AiNoriiiisiux".v»Y/AM I)
lir.Mt|KlMS(.)P(^$IU\‘WX>/
ABCO£FCHIKI.VNOPQRSTLW
WXYZ ABCt)lK.Mi|MMNO»*<J
vmv/AB<:oifc;r« Ki m
NnR^RSU-VvvxV/ABCDtFC.»t
R26
Approximate cost of repairing it yourself:
1 1 MQ, /^-wattt, 5% resistor
.15
1 hour
Appn
1
iy repair cost:
resistor
5.00
65.00
1 hour labor
Approximate dealer repair cost:
1 new board
1 hour labor
235.00
70.00
2/6
The Dead Mac Scrolls
Symptoms: The video display is out of focus. Other than that, the
computer is usable.
ABC()trCHi|KIWNOr(iR51L'V
vvxvzAOCDf rci HIM mm ii'<^
K.SUiVVVi<V7ABC0ErriMJJKLM
NOPQRSTLVrtXYZ AI»CO( » Cl II
IKl.MNOPQRSruVWXVZ.MICn
I rcHi.ia vj^onjRsu.'vwxv/
ABCDEFGH1JKI.VKOPQRSTUV
WX>7 ABCDlfCHilM MNOPQ
dStCWTOZABCDlfCUl KIM
NOPCJKSTUVWXy/ABCDEFGH
Typical history: The symptoms appeared immediately after the
computer was serviced or board-swapped (not out of the blue).
Probable diagnosis: The new analog board is out of adjustment.
Solution: Adjust variable resistor R27 (labeled Focus) for the best
all-around focus. If R27 makes no difference, see the prior entry.
Focus
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$305.00
1 new analog board 235.00
1 hour labor 70.00
Mac SE and SE/30
217
Symptoms: The video display is shrunken. Other than that, the
computer is usable.
Typical history: The symptoms appeared right after installation of a
memory upgrade or an expansion card.
Probable diagnosis: The analog board is out of adjustment.
Solution: Adjust variable resistor R4 (labeled Height) and tunable
coil L2 (labeled Width) for a 7.1 1 x 4.75-inch display.
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$305.00
1 new analog board 235.00
1 hour labor 70.00
218
The Dead Mac Scrolls
Symptoms: On powerup, a heavily upgraded SE intermittently
makes a flup flup flup noise and fails to start.
Typical history: When reverted to the stock configuration (1 MB,
no expansion card), this same SE works perfectly.
Probable diagnosis: The problem is in the Astec power supply.
Solution: Check/replace the IRE 830 power MOSFET transistors at
board references Q2 and Q3.
Q2
Q3
Approximate cost of repairing it yourself:
$5.10
1 IRE 830 MOSFET
5.10
1 hour
Approximate third-party repair cost:
$75.20
1 IRE 830 MOSFET
10.20
1 hour labor
65.00
Approximate dealer repair cost:
$328.33
1 new power supply 258.33
1 hour labor
70.00
Mac SE and SE/30
219
Symptoms: On startup from the internal hard drive, you get a dialog
box stating, This disk is unreadable: Do you want to initialize it? but
the arrow points to the same hard drive that you just booted from!
This disk is unreadable:
Do you ujant to initialize it?
Initialize
Probable diagnosis: The problem is on the SE logic board.
Solution: Check/replace the filter networks (20-pin DIP, Apple part
1 1 5-0002) at board references B9 and B1 1 .
Approximate cost of repairing it yourself:
$12.00
1 Bourns filter
12.00
2 hours
Approximate third-party repair cost:
$154.00
1 Bourns filter
24.00
2 hours labor
130.00
Approximate dealer repair cost:
$398.33
1 new logic board (SE)
328.33
1 hour labor
70.00
220
The Dead Mac Scrolls
Symptoms: On startup, you get a dialog box stating, This disk is
unreadable: Do you want to initialize it? but the arrow points to a
nonexistent external floppy drive!
This disk is unreadable:
Do you want to initialize it?
K II
Initialize
Probable diagnosis: The problem is on the SE logic board.
Solution: Check/replace the filter networks (20-pin DIP, Apple part
1 1 5-0002) at board references B9 and B1 1 .
Approximate cost of repairing it yourself:
$12.00
1 Bourns filter
12.00
2 hours
Approximate third-party repair cost:
$154.00
1 Bourns filter
24.00
2 hours labor
130.00
Approximate dealer repair cost:
$398.33
1 new logic board (SE)
328.33
1 hour labor
70.00
CHAPTER 3
MAC II
222
The Dead Mac Scrolls
Symptoms: The normal startup chime is present, but the internal
hard drive doesn't make mounting noises, the disk drive doesn't
pulse and raster never comes upon the monitor(s). If you unplug
the internal hard drive and restart from a System disk, the internal
disk drive doesn't spin and raster still doesn't come up on the
monitor(s). Either way, there are no error sounds.
on
Probable diagnosis: The problem is on a NuBus card.
Solution: Shut down/remove the installed NuBus cards one at a
time until normal operation is restored.
NuBus card
Approximate cost of repairing it yourself: 30 min.
+ card repairs
Approximate third-party repair cost: $65.00
1 hour labor 65.00 + card repairs
Approximate dealer repair cost: $70.00
1 hour labor 70.00 + cost of
new card
Mac //
223
Symptoms: On startup, the normal startup chime is quickly
followed by an error chord, then a do-do-da-da sound. The internal
hard drive doesn't make its usual noises. The disk drive doesn't
pulse. Raster never comes up on the monitor(s).
Typical history: The problem occurred out of the blue.
Probable diagnosis: There's a dust short on the logic board.
Solution: Remove the lid and the drive bay. Take the CPU cabinet
outdoors and blow out the dust with an air compressor. Also see the
next entry.
»iii" .
3
1
llfilii
ll kr - ^ ^
\
m 1 —
— dust —
— c::a <:
CPU cabinet drive bay
Approximate cost of repairing it yourself:
1 hour
Approximate third-party repair cost:
$195.00
3 hours labor 195.00
Approximate dealer repair cost:
$210.00
3 hours labor 210.00
224
The Dead Mac Scrolls
Symptoms: On startup, the normal startup chime is quickly
followed by an error chord, then a clo-do-da-da sound. The internal
hard drive doesn't make its usual noises. The disk drive doesn't
pulse. Raster never comes up on the monitor(s).
Typical history: The problem occurred right after you installed an
external SCSI hard drive.
Probable diagnosis: The SCSI cable isn't plugged all the way into
the 50-pin connector on the back of the external hard drive.
Solution: Check the SCSI cable. Make sure both ends are plugged
all the way in. Make sure that the screws are tightened and make
sure the bails are fastened. Also see the prior entry.
Approximate cost of repairing it yourself:
Approximate third-party repair cost:
3 hours labor
Approximate dealer repair cost:
3 hours labor
2 min.
195.00
$195.00
210.00
$210.00
Mac II
225
Symptoms: On startup, you get the normal startup chime, the hard
drive (if present) makes its usual noises, the raster starts to come up
on the monitor, the disk drive pulses as usual and then (right about
when the Welcome to Macintosh dialog box should appear) you
get a do-do-da-da sound and the raster blacks out.
disconnected/removed the last SCSI device on the bus, but not the
cable.
Probable diagnosis: There's a termination problem on the SCSI bus.
Solution: Install an external terminator on the open-ended SCSI
cable that was left behind, or remove the cable and install a
terminator (if necessary) on the SCSI device to which it had been
connected. Also see the next entry.
Approximate cost of repairing it yourself:
$15.00
1 external terminator
15.00
2 min.
Approximate third-party repair cost:
$225.00
1 external terminator
30.00
3 hours labor
195.00
Approximate dealer repair cost:
$250.00
1 external terminator
40.00
3 hours labor
210.00
226
The Dead Mac Scrolls
Symptoms: On startup, you get the normal startup chime, the hard
drive (if present) makes its usual noises, the raster starts to come up
on the monitor, the disk drive pulses as usual and then (right about
when the Welcome to Macintosh dialog box should appear) you
get a do-do-da-da sound and the raster blacks out.
Typical history: The problem occurred when you installed a
second or third external SCSI device (generally a LaserWriter lISC or
a Personal LaserWriter SC).
Probable diagnosis: The problem is on the SCSI bus. When the
total cable length exceeds ten feet, an extra terminator may be
required in the middle of the bus.
Solution: Substitute shorter SCSI cables, or install a third terminator
in the middle of the bus. Also see the prior entry.
Approximate cost of repairing it yourself:
$15.00
1 external terminator
15.00
2 min.
Approximate third<party repair cost:
$225.00
1 external terminator
30.00
3 hours labor
195.00
Approximate dealer repair cost:
$250.00
1 external terminator
40.00
3 hours labor
210.00
Mac II
227
Symptoms: On startup, you get the normal startup chime, then you
get a single high note followed by a do-cJo-da-da sound and then
the raster blacks out.
Typical history: The problem occurred when (or shortly after) you
installed a RAM upgrade.
Probable diagnosis: The problem is on the logic board.
Solution: Check/replace the four SIMMs located in bank A.
Bank A
Approximate cost of repairing it yourself:
$35.00
1 SIMMd MB)
35.00
1 hour
Approximate third-party repair cost:
$265.00
1 SIMM (1 MB)
70.00
3 hours labor
195.00
Approximate dealer repair cost:
$368.33
1 SIMMd MB, 80 NS)
158.33
3 hours labor
210.00
228
The Dead Mac Scrolls
Symptoms: On startup, you get the normal startup chime, then you
get a high note, followed by an even higher note, followed by a
do-do-da-da sound. Then the raster blacks out.
Typical history: The problem occurred when (or shortly after) you
installed a RAM upgrade.
Probable diagnosis: The problem is on the logic board.
Solution: Check/replace the four SIMMs located in bank B.
Bank B
3 F= 1
tr-
pi
IIIIP»
im
□
SUcU □□
fvftk tvjv
1 —
Approximate cost of repairing it yourself:
$35.00
1 SIMM (1 MB)
35.00
1 hour
Approximate third-party repair cost:
$265.00
1 SIMM (1 MB)
70.00
3 hours labor
195.00
Approximate dealer repair cost:
$368.33
1 SIMM (1 MB, 80 NS)
158.33
3 hours labor
210.00
Mac II
229
Symptoms: On powerup, the green power supply light comes on,
but the normal startup chime doesn't sound. Raster never comes up
on the monitor.
on
J
Probable diagnosis: The problem is on the Macintosh II logic board.
Solution: Check/replace the HMMU located at board reference
U67 on the 820-0163-03 logic board and grid reference UG13 on
the 820-0228-A logic board. If the black chip is spotted or shows
signs of overheating, replace it with an MC68851RC16A PMMU
(paged memory management unit). Also see the next entry.
■^(P
HMMU
Approximate cost of repairing it yourself:
$125.00
1 MC68851RC16A
125.00
30 min.
Approximate third-party repair cost:
$445.00
1 MC68851RC16A
250.00
3 hours labor
195.00
Approximate dealer repair cost:
$565.00
1 PMMU upgrade
495.00
1 hour labor
70.00
230
The Dead Mac Scrolls
Symptoms: On powerup, the green power supply light comes on,
but the normal startup chime doesn't sound. Raster never comes up
on the monitor.
Typical history: The problem occurred when (or shortly after) you
installed a PMMU upgrade.
Probable diagnosis: The problem is on the logic board. The PMMU
is probably loose in the socket.
Solution: Check/replace the PMMU located at board reference
U67 on the 820-0163-03 logic board and grid reference UG13 on
the 820-0228-A logic board.
hon
on
I
|||||°g§iii
PMMU
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
3 hours labor
$195.00
195.00
Approximate dealer repair cost:
3 hours labor
210.00
$210.00
Mac II
231
Symptoms: Mode32 won't install and/or virtual memory won't run
even though there is a PMMU in the machine. Everything else
seems to work OK.
Probable diagnosis: The problem is on the logic board. The PMMU
is probably loose in the socket.
Solution: Check/replace the PMMU located at board reference
U67 on the 820-0163-03 logic board and grid reference UG13 on
the 820-0228-A logic board.
PMMU
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$195.00
3 hours labor 195.00
Approximate dealer repair cost:
$210.00
3 hours labor 210.00
232
The Dead Mac Scrolls
Symptoms: On startup, you get seven copies of the startup disk
icon.
^ File Edit LMeiu Special Color
C
I- II
HD 40
1
HD 40
I- 1 1
1
HD 40
i 1 1
HD 40
1 1
I- 1 1
HD 40
I- 1
HD 40
1 t
I- 1
HD 40
Typical history: The problem occurred when you installed an
external SCSI drive.
Probable diagnosis: The problem is on the SCSI bus. Two devices
have the same ID number.
Solution: Check/renumber the SCSI devices so that every device on
the bus has a unique ID number between 0 and 6. By convention,
internal hard drives are always to be 0. External devices can be any
number between 1 and 6. The Mac itself is always 7.
Approximate cost of repairing it yourself:
5 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
Mac //
233
Symptoms: The internal hard drive works OK, but external hard
drives (that work perfectly on other Macs) don't work on this
machine.
Typical history: The problem occurred when you plugged a
parallel printer into the SCSI port.
Probable diagnosis: The problem is on the logic board.
Solution: Check/replace the fuse (lA, Pico) at board reference FI.
Also see the next entry.
FI
— 1
1
imp ss ill
□
Mm n nizi
.'iHi'i tnvfd
-1 1
Approximate cost of repairing it yourself:
$1.00
1 Pico fused A)
1.00
1 hour
Approximate third-party repair cost:
$200.00
1 Pico fuse (1 A)
5.00
3 hours labor
195.00
Approximate dealer repair cost:
$565.00
1 new logic board (Mac II)
495.00
1 hour labor
70.00
234
The Dead Mac Scrolls
Symptoms: Internal and external hard drives (that work perfectly on
other Macs) don't work on this machine.
Typical history: The problem occurred after you connected or
disconnected a SCSI cable while the power was on.
Probable diagnosis: The problem is on the Mac II logic board.
Solution: Check/replace the SCSI chip (53C80-P44, SMD) at board
reference U45 on the 820-01 63-03 logic board and grid reference
B8 on the 820-0228-A logic board. Also see the prior entry.
53C80
Approximate cost of repairing it yourself:
1 53C80-P44 (surface mount)
18.00
$18.00
1 hour
Approximate third-party repair cost:
1 53C80-P44 (surface mount)
3 hours labor
36.00
195.00
$231.00
Approximate dealer repair cost:
1 new logic board (Mac II)
1 hour labor
495.00
70.00
$565.00
Mac //
235
Symptoms: On startup, the desktop appears, but neither the
keyboard nor the mouse works.
Typical history: The problem occurred after you connected or
disconnected an ADB device while the computer was on.
Probable diagnosis: The problem is on the Mac II logic board.
Solution: Check/replace the fuse (1A, Pico) at board reference F2.
Also see the next entry.
F2
ir iVr'
3 == 1
IlllpSSii
□
M4. <r □□
mi
1
Approximate cost of repairing it yourself:
$1.00
1 Pico fuse (1 A)
1.00
1 hour
Approximate third-party repair cost:
$200.00
1 Pico fuse (1 A)
5.00
3 hours labor
195.00
Approximate dealer repair cost:
$565.00
1 new logic board (Mac II)
495.00
1 hour labor
70.00
236
The Dead Mac Scrolls
Symptoms: On startup, the desktop appears, but neither the
keyboard nor the mouse works.
Typical history: The problem occurred after you connected or
disconnected an ADB device while the computer was on.
Probable diagnosis: The problem is on the Mac II logic board.
Solution: Check/replace the shorted filter (Apple part 155-0007-E)
at location L7 on the 820-0163-03 logic board and grid reference
A14 on the 820-0228-A logic board. Also see the prior entry.
Approximate cost of repairing it yourself:
$14.00
1 ADB filter, Tokin D-16C
14.00
2 hours
Approximate third-party repair cost:
$223.00
1 ADB filter, Tokin D-16C
28.00
3 hours labor
195.00
Approximate dealer repair cost:
$565.00
1 new logic board (Mac II)
495.00
1 hour labor
70.00
Mac II
237
Symptoms: On startup, the desktop appears, but neither the
modem nor the printer works.
Probable diagnosis: The problem is on the Mac II logic board.
Solution: Check/replace the AM26LS30 chips at board references
U70 and U71 on the 820-0163-03 logic board and grid references
A14 and B14 on the 820-0228-A logic board.
26L.S30
1
|||||°8§ii
if
□
suit □□
“1 1 —
Approximate cost of repairing it yourself:
$5.00
1 26LS30
5.00
2 hours
Approximate third-party repair cost:
$205.00
1 26LS30
10.00
3 hours labor
195.00
Approximate dealer repair cost:
$565.00
1 new logic board (Mac II)
495.00
1 hour labor
70.00
238
The Dead Mac Scrolls
Symptoms: When an HP DeskWriter that works perfectly on other
Macs is directly connected to the printer port and properly selected
in the Chooser, it prints Error trap 10864 and then cancels the print
job.
Error trap 1 0864
Typical history: Other printers directly connected to the printer
port seem to work fine.
Probable diagnosis: The problem is on the Mac II logic board (not in
the DeskWriter).
Solution: Check/replace the R/C network (20-pin DIP, Apple part
115-0002) at board reference RP14.
RP14
Approximate cost of repairing it yourself:
$12.00
1 Bourns filter
12.00
2 hours
Approximate third-party repair cost:
$154.00
1 Bourns filter
24.00
2 hours labor
130.00
Approximate dealer repair cost:
$565.00
1 new logic board (Mac II)
495.00
(average cost)
1 hour labor
70.00
Mac //
239
Symptoms: When an HP DeskWriter that works perfectly on other
Macs is directly connected to the modem port and properly
selected in the Chooser, it prints Error trap 10864 and then cancels
the print job.
Error trap 1 0864
Typical history: Other printers connected to the modem port
seem to work fine.
Probable diagnosis: The problem is on the Mac II logic board (not in
the DeskWriter).
Solution: Check/replace the R/C network (20-pin DIP, Apple part
115-0002) at board reference RP15.
RP15
Approximate cost of repairing it yourself:
$12.00
1 Bourns filter
12.00
2 hours
Approximate third-party repair cost:
$154.00
1 Bourns filter
24.00
2 hours labor
130.00
Approximate dealer repair cost:
$565.00
1 new logic board (Mac II)
495.00
(average cost)
1 hour labor
70.00
240
The Dead Mac Scrolls
Symptoms: The Mac II does not maintain the time and date.
Whenever the power cord is disconnected, the date goes back to
1904.
Time
0:00:00 AM
<•) 12hr. 024hr.
0/01/04
Probable diagnosis: The problem is on the Mac II logic board.
Solution: Check/replace the clock battery (lithium, V2 AA) at board
location B1 (820-0163-03 logic board). Early models have 3V
solder-in batteries with pigtail leads. Later models have 3.6V
batteries that snap into battery boxes.
B1
Approximate cost of repairing it yourself:
$12.00
1 lithium battery (/2AA)
12.00
2 hours
Approximate third-party repair cost:
$219.00
1 lithium battery (V2AA)
24.00
3 hours labor
195.00
Approximate dealer repair cost:
$565.00
1 new logic board (Mac II)
495.00
1 hour labor
70.00
Mac //
247
Symptoms: The Mac II is hard starting. When the Power On key is
pressed it doesn't always start!
Power On key
□ I I I I I r'TTT'l I I I I I MM
-rtti
Probable diagnosis: The problem is on the Mac II logic board.
Solution: Check/replace the battery (lithium, V2 AA) at board
location B2 (820-0163-03 logic board). Early models have 3V
solder-in batteries with pig tail leads. Later models have 3.6V
batteries that snap into battery boxes.
Approximate cost of repairing it yourself:
$12.00
1 lithium battery (/2AA)
12.00
2 hours
Approximate third-party repair cost:
$219.00
1 lithium battery (V2AA)
24.00
3 hours labor
195.00
Approximate dealer repair cost:
$565.00
1 new logic board (Mac II)
495.00
1 hour labor
70.00
242
The Dead Mac Scrolls
Hardware affected: Mac llci with 3.5-inch Toshiba 106 hard drive.
Symptoms: On startup, the normal startup chime is followed by a
do-do-da-da sound, then you get a sad Mac with error code
OOOOOOOF over 00000001 .
0000000F
0 0 0 0 0 0 0 1
Probable diagnosis: The problem is on the internal hard drive.
Solution: To restore normal operation, shut down and disconnect
the internal hard drive.
hard drive
Approximate cost of repairing it yourself: 30 min.
drive repairs
Approximate third-party repair cost: $65.00
1 hour labor 65.00 + drive repairs
Approximate dealer repair cost: $70.00
1 hour labor 70.00 + cost of
new drive
CHAPTER 4
FLOPPY DISK DRIVES
Problems and solutions 244
Replacing disk drive heads
without test instruments 265
Materials required 265
Disassembly and replacement instructions 266
Track zero alignment procedure 274
244
The Dead Mac Scrolls
Hardware affected: Apple/Sony OA-D34V 400K disk drive (internal
or external).
Symptoms: The eject mechanism sticks or no longer works at all.
Typical history: The problem developed gradually, over a period of
time.
Probable diagnosis: The grease used on the eject levers (located on
the right side of the drive) has dried out and turned to glue.
Solution: Remove the sticky dried-out grease with paper towels and
cotton swabs. Relubricate the eject levers with WD-40.
Eject levers
Approximate cost of repairing it yourself:
1 hour
Approximate third-party repair cost:
1 hour labor
65.00
$ 65.00
Approximate dealer repair cost:
1 new 400K disk mechanism
1 hour labor
245.00
70.00
$ 315.00
Floppy disk drives
245
Hardware affected: Apple/Sony OA-D34V 400K disk drive (internal
or external).
Symptoms: Regardless of which disk you insert, the computer says,
This disk is unreadable: Do you want to initialize it?
n>n This disk is unreadable:
U Do you luant to initialize it?
Eject
Initialize
L ^
Typical history: The problem started right after a stuck disk was
forcibly ejected from the drive (yanked out with pliers).
Probable diagnosis: The forcible eject dislocated the pressure pad,
which is now loose (somewhere inside the drive).
Solution: Pop the loose pad into its mounting bracket (located
directly above the read/write head). Also see the prior entry.
Pressure pad
Approximate cost of repairing it yourself:
1 hour
Approximate third-party repair cost:
$65.00
1 hour labor
65.00
Approximate dealer repair cost:
$315.00
1 new 400K disk mechanism 245.00
1 hour labor
70.00
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The Dead Mac Scrolls
Hardware affected: Apple/Sony OA-D34V 400K disk drive (internal
or external).
Symptoms: Regardless of which disk you insert, the computer says,
This disk is unreadable: Do you want to initialize it?
This disk is unreadable:
Do you ujant to initialize it?
[ Initialize
Eject
Typical history: The problem started out of the blue (not right after
a stuck disk was yanked out with pliers).
Probable diagnosis: The 400K read/write head is dirty.
Solution: Clean the read/write head with a single-sided cleaning
diskette, preferably moistened with isopropyl alcohol. If that doesn't
do it, see the prior entry.
— Read/write head
Approximate cost of repairing it yourself:
5 min.
Approximate third-party repair cost:
$65.00
1 hour labor
65.00
Approximate dealer repair cost:
$315.00
1 new 400K disk mechanism 245.00
1 hour labor
70.00
Floppy disk drives
247
Hardware affected: Apple/Sony OA-D34V 400K disk drive (internal
or external).
Symptoms: When copying disks or files, you get a dialog box that
says, The file "File Name" could not be read and was skipped.
The file "File Name" could not
^ ' be read and luas skipped.
I J
Cancel
Typical history: The problem may have developed gradually, or it
may have started right after the drive was serviced.
Probable diagnosis: The pressure pad spring is weak or improperly
adjusted. There's not enough tension on the head.
Solution: Move the pressure pad spring to the next notch (on the
mounting bracket) so that it places more tension on the head.
Approximate cost of repairing it yourself:
Approximate third-party repair cost:
1 hour labor
Approximate dealer repair cost:
1 new 400K disk mechanism
1 hour labor
1 hour
65.00
$65.00
245.00
70.00
$315.00
248
The Dead Mac Scrolls
Hardware affected: Apple/Sony OA-D34V 400K disk drive (internal
or external).
Symptoms: Regardless of which disk you insert, the computer says
This is not a Macintosh disk: Do you want to initialize it?
This is not a Macintosh disk:
Do you ujant to initialize it?
Eject ]
Initialize
Typical history: The same 400K disks work fine in other drives.
Probable diagnosis: The stepper motor is out of alignment.
Solution: Perform the track zero alignment procedure described
starting on page 274.
Approximate cost of repairing it yourself:
1 hour
Approximate third-party repair cost:
$65.00
1 hour labor
65.00
Approximate dealer repair cost:
$315.00
1 new 400K disk mechanism 245.00
1 hour labor
70.00
Floppy disk drives
249
Hardware affected: Apple/Sony MFD-51W 800K internal disk
drive.
Symptoms: Even when there is no disk in the drive, it spins and
makes continuous eject noises.
Typical history: The problem occurred after swapping the drive,
but not the cable.
Probable diagnosis: The problem is in the disk drive data cable.
Solution: Replace the red-striped data cable with a yellow-striped
data cable. Alternatively, disconnect the existing wires leading to
pins 9 and 20 at the socket header (on one end of the red-striped
cable).
Approximate cost of repairing it yourself:
1 hour
Approximate third-party repair cost:
$65.00
1 hour labor
65.00
Approximate dealer repair cost:
$300.00
1 new 800K disk mechanism 230.00
1 hour labor
70.00
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The Dead Mac Scrolls
Hardware affected: Apple/Sony MFD-51W 800K disk drive
(internal or external).
Symptoms: The eject mechanism sticks or no longer works at all.
Typical history: The problem developed gradually, over a period of
time.
Probable diagnosis: The OEM grease used on the eject levers
(located at the top of the drive) has dried out and turned to glue.
Solution: Remove the sticky dried-out grease with paper towels and
cotton swabs. Relubricate the eject levers with WD-40. To remove
a stuck disk from the drive (without damaging the read/write heads),
see the disassembly instructions at the end of this chapter.
Eject levers
Approximate cost of repairing it yourself:
1 hour
Approximate third-party repair cost:
$65.00
1 hour labor
65.00
Approximate dealer repair cost:
$300.00
1 new 800K disk mechanism 230.00
1 hour labor
70.00
Floppy disk drives
251
Hardware affected: Apple/Sony MFD-51 W 800K disk drive
(internal or external).
Symptoms: Regardless of which disk you insert, the computer says,
This disk is unreadable: Do you want to initialize it?
This disk is unreadable:
Do you luant to initialize it?
I[ tject ])
One-Sided Tuio-Sided
Typical history: The problem started right after a stuck disk was
forcibly ejected from the drive (yanked out with pliers).
Probable diagnosis: During the forcible eject, the open disk shutter
dislocated the upper read/write head.
Solution: Replace the 800K read/write head assembly (Sony part
A-8010-223-A). If necessary, perform the track zero alignment
procedure described starting on page 274.
Approximate cost of repairing It yourself:
$75.00
1 800K head assembly
75.00
1 hour
Approximate third-party repair cost:
$140.00
1 800K head assembly
75.00
1 hour labor
65.00
Approximate dealer repair cost:
$300.00
1 new 800K disk mechanism 230.00
1 hour labor
70.00
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The Dead Mac Scrolls
Hardware affected: Apple/Sony MFD-51W 800K disk drive
(internal or external).
Symptoms: Regardless of which disk you insert, the computer says,
This disk is unreadable: Do you want to initialize it?
4
This disk is unreadable:
Do you ujant to initialize it?
Eject 1
One-Sided Tiuo-Sided
' L i k J
Typical history: The problem started out of the blue (not right after
a stuck disk was yanked out with pliers).
Probable diagnosis: The read/write head is dirty.
Solution: Clean the read/write head with a double-sided cleaning
diskette, preferably moistened with isopropyl alcohol. Also see the
next entry.
Approximate cost of repairing it yourself:
5 min.
Approximate third-party repair cost:
$65.00
1 hour labor
65.00
Approximate dealer repair cost:
$300.00
1 new 800K disk mechanism 230.00
1 hour labor
70.00
Floppy disk drives
253
Hardware affected: Apple/Sony MFD-51W 800K disk drive
(internal or external).
Symptoms: Regardless of which disk you insert, the computer says,
This disk is unreadable: Do you want to initialize it?
This disk is unreadable:
Do you iiiant to initialize it?
|[ Eject
One-SidedJ
Tuio-Sided
Typical history: The problem started during a heat wave (90° to
100°) after the drive had been in use for several hours.
Probable diagnosis: The drive got too hot to continue working.
Solution: Shut down and allow the drive to cool. To prevent
recurrence, aim a small table fan at the computer equipment.
Approximate cost of repairing it yourself:
zip
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$300.00
1 new 800K disk mechanism 230.00
1 hour labor 70.00
254
The Dead Mac Scrolls
Hardware affected: Apple/Sony MFD-51W 800K disk drive
(internal or external).
Symptoms: Regardless of what program you happen to be running,
you intermittently get a dialog stating, Sorry, a system error
occurred. ID=W.
Sorry, a system error occurred.
Restart
ID=10
Typical history: The problem generally occurs in warm weather, or
after the drive has been in use for several hours, when you choose
Open, Save, Quit or some other menu item.
Probable diagnosis: The drive got too hot to continue working.
Solution: Shut down and allow the drive to cool. To prevent
recurrence, aim a small table fan at the computer equipment.
Approximate cost of repairing it yourself:
zip
Approximate third-party repair cost:
$65.00
1 hour labor
65.00
Approximate dealer repair cost:
$300.00
1 new 800K disk mechanism 230.00
1 hour labor
70.00
Floppy disk drives
255
Hardware affected: Apple/Sony MFD-51W 800K disk drive
(internal or external).
Symptoms: Regardless of what program you happen to be running,
you intermittently get a dialog stating, Sorry, a system error
occurred. ID=15
Sorry, a system error occurred.
Restart
ID=15
Typical history: The problem generally occurs in warm weather, or
after the drive has been in use for several hours, when you choose
Open, Save, Quit or some other menu item.
Probable diagnosis: The drive got too hot to continue working.
Solution: Shut down and allow the drive to cool. To prevent
recurrence, aim a small table fan at the computer equipment.
Approximate cost of repairing it yourself:
zip
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$300.00
1 new 800K disk mechanism 230.00
1 hour labor 70.00
256
The Dead Mac Scrolls
Hardware affected: Apple/Sony MFD-51W 800K disk drive
(internal or external).
Symptoms: When copying files from 800K disks, you get a dialog
box stating, The file "File Name" could not be read and was
skipped; but when copying files from 400K disks, everything works
perfectly.
The file “File Name" could not
• * ^ be read and luas skipped.
II H C
Cancel
Typical history: The problem developed gradually, in combination
with an eject problem.
Probable diagnosis: The upper head assembly is bent. There's not
enough pressure on the top side of the disk.
Solution: Replace the 800K read/write head assembly (Sony part
A-8010223-A). If necessary, perform the track zero alignment
procedure (see page 274).
Approximate cost of repairing It yourself:
$75.00
1 800K head assembly
75.00
1 hour
Approximate third-party repair cost:
$140.00
1 800K head assembly
75.00
1 hour labor
65.00
Approximate dealer repair cost:
$300.00
1 new 800K disk mechanism 230.00
1 hour labor
70.00
Floppy disk drives
257
Hardware affected: Apple/Sony MFD-51 W 800K disk drive
(internal or external).
Symptoms: Regardless of which 800K disk you insert, the computer
says, This is not a Macintosh disk: Do you want to initialize it?; but
400K disks read/write perfectly.
This is not a Macintosh disk:
Do you uiant to initialize it?
One-Sided Tujo-Sided
Typical history: The problem developed together with an eject
problem. The same 800K disks work fine in other drives.
Probable diagnosis: The upper read/write head is bent. It's no
longer in contact with the top side of the disk.
Solution: Replace the 800K read/write head assembly (Sony part
A-801 0223-A). If necessary, perform the track zero alignment
procedure (see page 274).
Approximate cost of repairing it yourself:
$75.00
1 800K head assembly
75.00
1 hour
Approximate third-party repair cost:
$140.00
1 800K head assembly
75.00
1 hour labor
65.00
Approximate dealer repair cost:
$300.00
1 new 800K disk mechanism 230.00
1 hour labor
70.00
258
The Dead Mac Scrolls
Hardware affected: Apple/Sony MFD-75W 1.4MB disk drive
(internal or external).
Symptoms: Occasionally, when you insert a disk, nothing happens.
Probable diagnosis: One of the microswitches is sticky.
Solution: Lubricate the sticky microswitch with WD-40.
rJ
r-
c
1
Microswitch
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$383.33
1 1 .4MB disk mechanism assembly 313.33
1 hour labor 70.00
Floppy disk drives
259
Hardware affected: Apple/Sony MFD-75W 1.4MB disk drive
(internal or external).
Symptoms: Sometimes, even when there is no disk in the drive, it
spins and makes continuous eject noises.
Probable diagnosis: One of the microswitches is sticky.
Solution: Lubricate the sticky microswitch with WD-40.
4
i-
r
J
i
■n r
1 1 1
Microswitch
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$383.33
1 1 .4MB disk mechanism assembly 313.33
1 hour labor 70.00
260
The Dead Mac Scrolls
Hardware affected: Apple/Sony MFD-75W 1.4MB disk drive
(internal or external).
Symptoms: The eject mechanism sticks or no longer works at all.
Typical history: The problem developed gradually, over a period of
time.
Probable diagnosis: The OEM grease used on the eject levers has
dried out and turned to glue.
Solution: Remove the sticky dried-out grease with paper towels and
cotton swabs. Relubricate the eject levers with WD-40. To remove
a stuck disk from the drive (without damaging the heads), see the
disassembly instructions at the end of this chapter.
Eject levers
Approximate cost of repairing it yourself:
/ hour
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$383.33
1 1 .4MB disk mechanism assembly 313.33
1 hour labor 70.00
Floppy disk drives
261
Hardware affected: Apple/Sony MFD-75W 1 .4MB disk drive
(internal or external).
Symptoms: Regardless of which disk you insert, the computer says,
This disk is unreadable: Do you want to initialize it?
Tirn This disk is unreadable:
Do you ujant to initialize it?
(
Eject JJ One-SidedJ [Tuio-Sided
Typical history: The problem started right after a stuck disk was
forcibly ejected from the drive (yanked out with pliers).
Probable diagnosis: During the forcible eject, the open disk shutter
dislocated the upper read/write head.
Solution: Replace the 1 .4MB read/write head assembly (Sony part
A-8010-251 -A). If necessary, perform the track zero alignment
procedure (see page 274).
Approximate cost of repairing it yourself:
$125.00
1 1 .4MB head assembly
125.00
1 hour
Approximate third-party repair cost:
$190.00
1 1 .4MB head assembly
125.00
1 hour labor
65.00
Approximate dealer repair cost:
$383.33
1 1.4MB disk mechanism assembly
313.33
1 hour labor
70.00
262
The Dead Mac Scrolls
Hardware affected: Apple/Sony MFD-75W 1.4MB disk drive
(internal or external).
Symptoms: Regardless of which disk you insert, the computer says,
This disk is unreadable: Do you want to initialize it?
A
ToTi This disk is unreadable:
Do you ujant to Initialize it?
Eject 1
1 One-Sided)
Tujo-Sided]
Typical history: The problem started out of the blue (not right after
a stuck disk was yanked out with pliers).
Probable diagnosis: The read/write head is dirty.
Solution: Clean the read/write head with a double-sided deanlng
diskette, preferably moistened with isopropyl alcohol.
Approximate cost of repairing it yourself:
5 min.
Approximate third-party repair cost:
$65.00
1 hour labor
65.00
Approximate dealer repair cost:
$383.33
1 1 .4MB disk mechanism assembly 313.33
1 hour labor
70.00
Floppy disk drives
263
Hardware affected: Apple/Sony MFD-75W 1.4MB disk drive
(internal or external).
Symptoms: When copying files from 1 .4MB and/or BOOK disks, you
invariably get a dialog box stating, T/?e file "File Name" could not be
read and was skipped; but when copying files from 400K disks,
everything works perfectly.
A
The file "File Name" could not
be read and ujas skipped.
Cancel
Typical history: The problem developed gradually, in combination
with an eject problem.
Probable diagnosis: The upper head assembly is bent. There's not
enough pressure on the top side of the disk.
Solution: Replace the 1.4MB read/write head assembly (Sony part
A-801 0-251 -A). If necessary, perform the track zero alignment
procedure described starting on page 274.
Approximate cost of repairing it yourself:
$125.00
1 1 .4MB head assembly
125.00
1 hour
Approximate third-party repair cost:
$190.00
1 1 ,4MB head assembly
125.00
1 hour labor
65.00
Approximate dealer repair cost:
$383.33
1 1 .4MB disk mechanism assembly
313.33
1 hour labor
70.00
264
The Dead Mac Scrolls
Hardware affected: Apple/Sony MFD-75W 1.4MB disk drive
(internal or external).
Symptoms: Regardless of which 1.4MB or BOOK disk you insert, the
computer says, This is not a Macintosh disk: Do you want to
initialize it?; but 400K disks work perfectly.
This is not a Macintosh disk:
Do you uiant to initialize it?
[[__EJgctJ|
r S
Initialize
Typical history: The problem developed suddenly, in combination
with an eject problem.
Probable diagnosis: The upper head assembly is bent. It's no longer
in contact with the top side of the disk.
Solution: Replace the 1 .4MB read/write head assembly (Sony part
A-801 0-251 -A). If necessary, perform the track zero alignment
procedure.
Approximate cost of repairing it yourself:
$125.00
1 1 .4MB head assembly
125.00
1 hour
Approximate third-party repair cost:
$190.00
1 1 .4MB head assembly
125.00
1 hour labor
65.00
Approximate dealer repair cost:
$383.33
1 1 .4MB disk mechanism assembly
313.33
1 hour labor
70.00
Floppy disk drives
265
Replacing disk drive heads without test instruments
The head-replacement procedure given in the official Sony
Micro Floppydisk Drive Service Manual requires an oscilloscope, an
MFD function checker, an IF board, a special test jig and a Sony
SMC-70 computer. This setup allou's factory service centers to do
precision work in the shortest possible time, but it is also possible for
mechanically inclined people to do a reasonably good job at home,
with ordinary hand tools and the Mac you already own.
Bear in mind, though, that mastering this procedure is like
learning to ride a bike: There's a knack to it. Written instructions are
not enough. The only way to learn it is to practice, practice and
practice some more, until you finally get it.
Materials required
• a new head carriage assembly, Sony part A-8010-223-A (800K)
or A-8010-25I-A (1. 4MB)
• a #0 Phillips-head screwdriver with a two-inch shaft
• a %4-inch Allen driver with a two-inch insulated shaft
• two initialized, unlocked BOOK disks
• five to ten initialized, locked BOOK disks (Miscellaneous public
domain disks are excellent for this purpose.)
• a two-foot data cable with 20-pin insulation displacement
connectors (IDCs) on either end (make sure pins 9 and 20 are
disconnected) or a DB19-P to 20-pin IDC cable taken from an
external BOOK or 1 .4MB disk drive (DD) cabinet
• any Macintosh equipped with a working BOOK or 1.4MB drive
and a second (internal or external) DD connector
266
The Dead Mac Scrolls
To f\Y pr<Od>CGiM:
Disassembly and replacement instructions
All part names used in this section are consistent with the part
names given in the Sony service manuals. Diagrams come after (not
before) the written instructions. Look at the next diagram (not the
previous one) for an illustration of what you're reading.
1 . Remove the disk drive from the computer or external cabinet.
2. Disconnect the data cable.
3. Remove the disk drive from its metal mounting bracket. Brackets
vary, but generally there are two screws along each side. Remove the
screws and slide the drive forward.
4. If necessary, eject the stuck disk by simultaneously disengaging the
disk-notch pawl located on the left side of the cassette holder
assembly and pushing on the eject button. Disengage the disk-notch
pawl by pulling (slightly) in the direction indicated by the arrow.
Eject button
Disk-notch pawl
Floppy disk drives
267
5. Lower the cassette holder assembly (to put it in "clisk-in" mode) by
engaging the trigger arm located on the right side of the cassette
holder. Push gently in the direction indicated by the arrow.
6. Using an ordinary pin, carefully release the cassette holder springs
from the DD frame. There are two springs, one per side, located
about halfway down each loading rail. Stretch/release only the
bottom of the springs (not the tops).
DD frame (back) — C
-
1 ' i
hi— i
E=l
1
1 1
jj — Disk
opening
Cassette holder spring
7. Remove the black plastic head stop. Note that the center arm is
barbed. The barb fits into a notch on the cassette holder assembly.
Lift up on the center arm to disengage it from the notch, and slide the
head stop toward the back of the drive.
268
The Dead Mac Scrolls
8. Remove the cassette holder from the disk drive frame. Lift up on
the front of the assembly, then push the eject button about halfway
in (if necessary), then lift up on the back of the assembly.
Eject button
Cassette holder
(front)
9. Carefully remove any dust, dried-up grease, etc. from the cassette
holder assembly. Relubricate with WD-40 as necessary.
10. Carefully remove any dust, dried-up grease, etc. from the slide
plate. Relubricate with WD-40 as necessary.
Floppy disk drives
269
Slide plate
1 1 . Examine the disk-notch pawl at the left-rear corner of the cassette
holder assembly. Push the lever in the direction indicated by the
arrow. Upon pushing the lever, the disk notch pawl will appear in
the opening as shown. If necessary (because a disk was forcibly
ejected with pliers and the pawl arm is horribly mangled), bend the
pawl arm back into shape, then reinstall the cassette holder assembly
and verify that the eject function works reliably.
^ I u i-D I ^ I I o "I — Disk opening
Cassette holder spring
Disk notch pawl
Cassette holder (left side)
12. When you're satisfied that the eject problem (if any) has been
fixed, remove the head carriage assembly. Unplug the two ribbon
cables; remove the two Phillips head screws on the slide-guide shaft
(do not loosen the third brass-color screw!); lift up on the left side of
the head carriage assembly, and disengage it from the rotor shaft.
270
The Dead Mac Scrolls
When lifting, be careful not to lose the rubber cap at the front end
of the slide-guide shaft. Sometimes it's glued to the disk drive frame;
sometimes it isn't.
Stator assembly
Phillips screw
Slide-guide shaft —
Rotor shaft
Head carriage assembly
— Cap
Phillips screw
Ribbon cables
1 3. Slip the slide-guide shaft out of the old head carriage assembly.
Slip the slide-guide shaft into the new head carriage assembly. Cap
the slide-guide shaft, if necessary.
Slide-guide shaft
14. Hold the new head carriage assembly at an angle. Sandwich the
rotor shaft between the head wire and the flat spring. Butt the head
carriage assembly up against the track 00 sensor, then position the
slide-guide shaft so that rubber cap is against the disk drive frame.
Floppy disk drives
271
Head wire goes on top
(flat spring fits underneath)
Rotor shaft
Disk drive frame
15. Reinstall the two black Phillips head screws over the slide-guide
shaft and reconnect the two ribbon cables. The rearmost cable
plugs into connector CN6, the frontmost cable plugs into CN5.
1 6. Make sure that the head wire is in a groove, not riding on top of
the rotor shaft.
Correct Incorrect
17. Reinstall the cassette holder assembly. While observing the
roller bearings on the sides of the cassette holder, lower it gently
over the slide plate (attached to the disk drive frame), then work the
eject button until the cassette holder assembly falls into place.
272
The Dead Mac Scrolls
DD frame (back) — [
Roller bearing Roller bearing
— Disk opening
— Slide plate
18. Reattach the cassette holder springs. Using a pin, carefully
reconnect the bottoms of the cassette holder springs to the disk
drive frame. Don't stretch the springs one millimeter more than
necessary!
DD frame (back) — [
Cassette holder spring
19. Reattach the black plastic head stop. Hold it at angle, so that
you can easily slip it under the head lifter without having to pry the
heads apart, then slide the head stop toward the front of the drive
so that the barb falls into the notch. Be very careful not to pry the
heads apart!
Floppy disk drives
273
20. Push the eject button all the way in (to set the carriage to
"disk-out" mode).
21. Carefully withdraw the rubber protector from between the
upper and lower heads. Be very careful not to pry the heads apart!
22. Make sure the Mac is turned off, then reconnect the data cable
(otherwise you may damage the disk drive electronics). When the
cable is securely connected, hold the drive by the edges so that the
flywheel underneath spins freely and then turn on the Mac.
Insert a reliable System disk in the working disk drive, then try
reading some locked, initialized disks in the drive you just fixed. If
they all mount, you're all done. Reinstall the drive in its metal
mounting bracket, then reinstall the assembly in the computer or
external case.
If you get a dialog box saying: 1) The disk "Disk Name" needs
minor repairs. Do you want to repair it^or 2) This disk is
unreadable: Do you want to initialize it ^ or 3) This disk is damaged:
Do you want to initialize /YP click the Eject button, and proceed to
the next step.
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The Dead Mac Scrolls
Track zero alignment procedure
23. Verify the disk drive's general operating condition by inserting a
disk you know is good (but that you don't care about) and clicking
Initialize or Two-Sided in the alert box that appears. If the disk
formats and mounts, it won't be readable in other drives, but at least
you'll know that except for alignment, the disk drive is OK.
If the disk doesn't format, loosen the brass screw on the track 00
sensor and move the sensor assembly just a little. Start by lining up
the V on the back of the sensor base with the line etched into the
disk drive frame. Tighten the screw, and then try initializing another
disk. Until you can initialize a disk, you can't go any further. If you're
not able to initialize any disk, then the drive may have an electrical
problem (someone may have yanked the data cable while the Mac
was on), or the new head assembly may be damaged (someone may
have spread the heads apart during the installation).
If you can initialize a disk, try mounting some locked, initialized
disks. If they all mount, you're all done. Reinstall the drive in its
metal mounting bracket, then reinstall the assembly into the
computer or external drive case. If they don't all mount, proceed to
the next step.
When the drive can initialize a disk, but can't read disks that you
know are good, it means that the stepping motor assembly
(consisting of the stator and the rotor) is out of alignment. Mark the
original position of the stator assembly on the disk drive frame (draw
00 sensor
Brass screw
Floppy disk drives
275
a line with a pencil or a fell marker), then loosen the mounting
bracket screws (just a little) with a %4-inch hex driver.
Note that the stator assembly mounting bracket is made of spring
steel. When the hex screws are tight, or when the stator assembly is
pushed in, turning the stator housing does not turn the rotor shaft. But
when the screws are just loose enough so that the stator assembly is
sprung out, turning the stator housing does turn the rotor shaft. It's
important to loosen the hex screws just enough to spring the
mounting bracket. If the hex screws are too loose or too tight, there
won't be any spring action, the rotor shaft won't turn as you turn the
stator housing, and you won't accomplish anything in the next step.
5/64 screw
Stator
5/64 screw
Spring-loaded mounting bracket
Rotor shaft
25. If you haven't done so already, mark the original position of the
stator housing on the disk drive frame, then turn the housing just a
hair one way or the other so that the rotor shaft turns, then snug the
screws and try reading a known-good disk again. If you get a dialog
box stating. The disk "Disk Name" needs minor repairs. Do you want
to repair it?, click the Cancel button, loosen the screws, turn the
stator housing a little more in the same direction, snug the screws
tighter and try again. Continue until either the disk mounts or you get
a dialog box stating. This disk is damaged: Do you want to initialize
it? or This disk is unreadable: Do you want to initialize it?
276
The Dead Mac Scrolls
If the disk mounts, proceed to the next step. If you get either dialog
box (This disk is damaged or This disk is unreadable), then either you
went too far, or you've been turning the stator housing the wrong
way. Loosen the screws and turn the housing the other way until the
disk mounts.
26. When the disk mounts, try mounting some other disks that you
know are good. If problems persist — if disk contents appear, but not
disk icons, or some disks mount but some don't, or it takes too long
to build the desktop — continue fine-tuning the stator alignment until
each and every one of the disks mounts normally.
When making final adjustments, pay attention to the way the drive
sounds. Without instruments, you have to rely on your hearing to tell
whether the alignment is correct, just like a seasoned mechanic
tuning an engine by ear.
27. Remount the drive in its metal mounting bracket.
28. Reinstall the drive in the computer or external cabinet.
CHAPTER 5
HARD DRIVES AND
OTHER PERIPHERALS
278
The Dead Mac Scrolls
Hardware affected: Any external hard drive.
Symptoms: The disk-access LED doesn't work.
LED
Probable diagnosis: The LED cable is backwards, loose or
disconnected.
Solution: Check/tighten/reverse the LED connections.
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$65.00
1 hour labor
65.00
Approximate dealer repair cost:
$558.33
1 new 3.5-inch 20 MB HDA (min) 488.33
1 hour labor
70.00
Hard drives and other peripherals
279
Hardware affected: Any external hard drive.
Symptoms: On startup, the drive spins but does not mount. Instead,
you get the blinking floppy-disk icon. Third-party formatting software
reports error during inquiry command.
Typical history: The problem occurred after power supply repair
work, right after you put everything back together.
Probable diagnosis: The SCSI data cable is loose, or one of its 50
internal wires is broken.
Solution: Check/replace the SCSI data cable.
Data cable
Approximate cost of repairing it yourself:
$1.00
1 foot of 50 conductor ribbon cable
1.00
1 hour
Approximate third-party repair cost:
$85.00
20 MB @ 4.25 per MB
85.00
Approximate dealer repair cost:
$558.33
1 new 3.5-inch 20 MB HDA 488.33
1 hour labor
70.00
280
The Dead Mac Scrolls
Hardware affected: Any Apple HD 20 SC or Mac SE with an
internal Miniscribe 8425SA SCSI drive.
Symptoms: On startup, the 20 MB hard drive peeps twice, then you
get a sad Mac and the desktop never appears.
Probable diagnosis: The internal 3.5-inch 20 MB drive mechanism
(Miniscribe 8425SA) has a bad master directory block.
Solution: Boot the computer from a floppy disk. Use third-party
SCSI formatting software (like DiskManager Mac version 2.24, not
Apple HD SC Setup) to test the drive. If testing reports that bad
blocks were found and rewritten, but the drive still won't mount,
reformat the drive.
If the format operation fails, reboot from the floppy disk, and once
the menu bar appears, hold down the mouse button. Holding down
the mouse button will often mount a drive in these cases, even
when the format operation failed. If holding down the mouse
button doesn't mount the drive, but the Finder indicates This is not
a Macintosh disk. Do you want to initialize it?, click OK.
If any of these procedures mounts the drive, it'll be fine. It'll work as
well as it ever did, for an indefinite period of time.
Approximate cost of repairing it yourself
1 DiskManager Mac (street price)
Approximate third-party repair cost:
20 MB @ 4.25 per MB
Approximate dealer repair cost:
1 new 3.5-inch 20 MB HDA
1 hour labor
49.95
$49.95
1 hour
85.00
$85.00
488.33
70.00
$558.33
Hard drives and other peripherals
281
Hardware affected: Any Apple HD 20 SC or Mac SE with an
internal Miniscribe 8425SA SCSI drive.
Symptoms: On startup, the disk access light comes on and stays on,
but the hard drive doesn't make the usual beep noises and it never
spins. Eventually, you get a floppy disk icon with a blinking question
mark.
Probable diagnosis: The problem may be mechanical (related to
the spinner motor) or it may be electrical (related to the ROM chip).
Solution: Verify the drive mechanism by substituting a controller
card that's known to be good. If the mechanism spins, installing a
controller card with the same ROM and PCB revisions as the failed
card may restore full operation. If the drive mechanism fails to spin,
the original controller card may still be good, and under opposite
circumstances, it might be used to repair another drive. Bear in
mind that new parts for the Miniscribe 8425 are very tough to come
by. Success generally requires a large stock of junk drives to take
parts from.
Approximate cost of repairing it yourself:
not practical
Approximate third-party repair cost:
$85.00
20 MB @ 4.25 per MB
85.00
Approximate dealer repair cost:
$558.33
1 new 3.5-inch 20 MB HDA 488.33
1 hour labor
70.00
282
The Dead Mac Scrolls
Hardware affected: Any Apple HD 20 SC, Mac SE or Mac XL with
an internal Miniscribe 8425SA SCSI drive.
Symptoms: On startup, the drive makes its usual beep noises but it
doesn't mount. Instead, it makes a continuous clunk-clunk noise.
Probable diagnosis: The problem is in the ROM chip (revisions vary)
located on the embedded controller card.
Solution: Replace the ROM chip with a used chip bearing identical
revision information. Bear in mind that new parts for the Miniscribe
8425 are very tough to come by. Success generally requires a large
stock of junk drives to take parts from.
Approximate cost of repairing it yourself: not practical
Approximate third-party repair cost: $85.00
20 MB @ 4.25 per MB 85.00
Approximate dealer repair cost: $558.33
1 new 3.5-inch 20 MB HDA 488.33
1 hour labor 70.00
Hard drives and other peripherals
283
Hardware affected: Any Apple HD 40 SC or Macintosh II with an
internal Quantum QA250 SCSI drive.
Symptoms: On startup, the drive spins but does not mount. If you
boot from a floppy disk and run Apple HD SC Setup version 2.0 or
later, you get a dialog box that says. Drive selection failed. Unable to
locate a suitable drive connected to the SCSI port.
Driue selection failed.
Unable to locate a suitable driue connected to
the SCSI port.
Continue
Probable diagnosis: The SCSI driver has been damaged or replaced
by optimizer software, protection software or a generic SCSI utility.
Solution: Reinstall a suitable SCSI driver by updating the drive with
Apple HD SC Setup version 1.5 (not Apple HD SC Setup version
2.0 or later). If this diagnosis is correct, the drive will mount with all
data intact, and it should work fine for an indefinite period of time.
Approximate cost of repairing it yourself: 10 min.
Approximate third-party repair cost: $170.00
40 MB @ 4.25 per MB 1 70.00
Approximate dealer repair cost: $670.00
1 new 3.5-inch 40 MB HDA 600.00
1 hour labor 70.00
284
The Dead Mac Scrolls
Hardware affected: Any Apple HD 40 SC, Mac SE or Mac II with an
internal Sony SRD 2040A 40 MB SCSI drive.
Symptoms: On startup, the disk access light (not visible on a Mac II)
comes on and stays on, but the drive does not spin. If the computer
isn't shut off immediately, the drive gets very hot and you smell
burning grease.
Probable diagnosis: The hard disks are stuck. Either there's too
much resistance on the drive bearing, or one of the heads is stuck to
the media.
Solution: Fold back the embedded controller card and spin the
motor (to get it started) by hand. Nine times out of ten, once you
put the controller card back on, the drive will work fine, for an
indefinite period of time.
Motor
Approximate cost of repairing it yourself: 1 hour
Approximate third-party repair cost: $170.00
40 MB @ 4.25 per MB 1 70.00
Approximate dealer repair cost: $670.00
1 new 3.5-inch 40 MB HDA 600.00
1 hour labor 70.00
Hard drives and other peripherals
285
Hardware affected: CMS PRO60 or any other external hard drive
with Lien Engineering power supply, board number 10-8707A.
Symptoms: The power switch is on and the power cord is
connected, but the unit is dead. The drive does not spin. The
cooling fan does not turn. The power supply LED does not light. The
unit makes no sound whatsoever.
Probable diagnosis: The problem is in the power supply.
Solution: Check/replace transistor Q1 (2SC 3150, T-NPN, SI,
high-speed switch) and pigtail fuse FI (1A) .
I I
FI Q1
Approximate cost of repairing it yourself:
$4.50
1 2SC 3150 transistor
4.00
1 hour
1 pigtail fuse (1 A)
.50
Approximate third-party repair cost:
$255.00
60 MB @ 4.25 per MB
255.00
Approximate dealer repair cost:
$795.00
1 new BOM HDA
725.00
1 hour labor
70.00
286
The Dead Mac Scrolls
Hardware affected: CMS PRO80-ll/i, Jasmine 80 or any other
external hard drive with a Quantum Q280 (80 MB) mechanism.
Symptoms: The drive spins but occasionally doesn't mount.
Formatting software intermittently reports broken bus or bus not
terminated.
Typical history: The unit had been working fine, but it failed
immediately after its SCSI cable was disconnected/reconnected
while the power was on.
Probable diagnosis: A fuse is blown on the embedded controller
card.
Solution: Check/replace the pigtail fuse (Pico, 1A) at board
reference FI.
Approximate cost of repairing it yourself:
$2.00
1 1 A Pico fuse
2.00
1 hour
Approximate third-party repair cost:
$340.00
80 MB ® 4.25 per MB
340.00
Approximate dealer repair cost:
$795.00
1 new BOM HDA
725.00
1 hour labor
70.00
Hard drives and other peripherals
287
Hardware affected: CMS PRO80-ll/i, Jasmine 80 or any other
external hard drive with a Quantum Q280 (80 MB) mechanism.
Symptoms: When copying files you get a dialog box stating, The file
"File Name" could not be read and was skipped.
The file "File Name" could not
' * ' be read and luas skipped.
^^3
Cancel
Typical history: The problem started right after the drive was
optimized or updated using a generic SCSI utility.
Probable diagnosis: The updated SCSI driver (using blind reads and
writes) is incompatible with this drive (which requires handshaking).
Solution: Reinstall compatible SCSI drivers using the OEM SCSI
utility or use Silverlining version 5.2/06 to install compatible drivers
by choosing SCS/ ReadA/Vrite Loops... from the Drive menu and
selecting Standard Mac Handshake from the dialog box.
1 Silverlining (street price)
Approximate third-party repair cost:
80 MB @ 4.25 per MB
Approximate dealer repair cost:
1 new 80M HDA
1 hour labor
$135.00
135.00
30 min.
$340.00
340.00
$795.00
725.00
70.00
288
The Dead Mac Scrolls
Hardware affected: CMS PI 100-SE/r or any other external hard
drive with Conner CP3100 (100 MB) mechanism.
Symptoms: The drive spins but does not mount. Formatting
software intermittently reports broken bus or bus not terminated.
Typical history: The CP3100 worked fine before as an internal
drive, but failed immediately after it was mounted in an external
enclosure.
Probable diagnosis: One of the mounting screws has disconnected
CR15 on the embedded controller card.
Solution: Remove the screw. Inspect/resolder/replace CR15.
Approximate cost of repairing it yourself: 7 hour
Approximate third-party repair cost: $425.00
100 MB @ 4.25 per MB 425.00
Approximate dealer repair cost: $795.00
1 new BOM HDA
1 hour labor
725.00
70.00
Hard drives and other peripherals
289
Hardware affected: Hisper 20 or any other external hard drive with
a Seagate ST225N (20 MB) mechanism.
Symptoms: The drive mounts, but it's painfully slow and prone to
system errors. Reformatting/reinstalling drivers isn't possible because
the OEM SCSI software no longer recognizes this drive.
Typical history: The problem started right after a disk-tools editor
was used to update, optimize or write new sectors to the drive.
Probable diagnosis: The OEM SCSI driver has been corrupted.
Solution: Reformat the drive with DiskManager Mac version 2.24 by
choosing Format options... from the Defect Management menu
and selecting Use manufacturer's default format from the dialog
box.
Test hard disk...
Reassign Blocks
Approximate cost of repairing it yourself:
1 DiskManager Mac (street price) 49.95
$49.95
1 hour
Approximate third-party repair cost:
20 MB @ 4.25 per MB
85.00
$85.00
Approximate dealer repair cost:
1 HD20SC external mechanism 756.67
$756.67
290
The Dead Mac Scrolls
Hardware affected: Jasmine 20 or any other external hard drive
with a Miniscribe 8425SA (20 MB) mechanism.
Symptoms: The drive spins but occasionally does not mount.
Formatting software intermittently reports broken bus or bus not
terminated.
Typical history: The unit had been working fine, but it failed
immediately after its SCSI cable was disconnected/reconnected
while the power was on.
Probable diagnosis: A fuse is blown on the embedded SCSI
controller card.
Solution: Check/replace the pigtail fuse (Pico, 1A) at board
reference FI.
i 1 A Pico fuse
Approximate third-party repair cost:
20 MB @ 4.25 per MB
Approximate dealer repair cost:
1 new 3.5-inch 20 MB FJDA
1 hour labor
2.00
$2.00
1 hour
85.00
$85.00
488.33
70.00
$558.33
Hard drives and other peripherals
291
Hardware affected: Jasmine Direct Drive 40 external hard drive
with 3.5-inch Quantum 40 Prodrive (40 MB) mechanism.
Symptoms: The power switch is on and the fan spins, but the hard
drive does not start. Tapping on, picking up or moving the enclosure
may start the drive.
Probable diagnosis: One of the insulation displacement connectors
(IDCs) on the power supply cable is intermittent.
Solution: Strip and solder both ends of each wire to the insulation
displacement connectors.
stripped & soldered
Approximate cost of repairing it yourself:
1 hour
Approximate third-party repair cost:
40 MB @ 4.25 per MB
$170.00
170.00
Approximate dealer repair cost:
1 new 3.5-inch 40 MB HDA
1 hour labor
$670.00
600.00
70.00
292
The Dead Mac Scrolls
Hardware affected: Jasmine Direct Drive 80 external hard drive
with 5,25-inch Quantum Q280 (80 MB) mechanism.
Symptoms: The power switch is on and the fan spins, but the hard
drive does not start. Tapping on, picking up or moving the enclosure
may start the drive.
Probable diagnosis: One of the insulation displacement connectors
(IDCs) on the power supply cable is intermittent.
Solution: Strip and solder both ends of each wire to the insulation
displacement connectors.
Approximate cost of repairing it yourself: 1 hour
Approximate third-party repair cost: $340.00
80 MB @ 4.25 per MB 340.00
Approximate dealer repair cost: $795.00
1 new 5.25-inch 80 MB HDA 725.00
1 hour labor 70.00
Hard drives and other peripherals
293
Hardware affected: Jasmine 100, MicroTech Nova 50 or other
external hard drive with Power General Series 3045 power supply.
Symptoms: The power switch is on and the power cord is
connected, but the unit is dead. The power supply LED doesn't
light. The drive doesn't spin. The fan doesn't turn. The unit makes
no sound whatsoever.
Probable diagnosis: The problem is in the power supply.
Solution: Desolder/check/replace resistor R3 (200K, 2W, 5%). If
exact replacement resistor is unavailable, substitute 220K, 2W, 2%.
R3
Approximate cost of repairing it yourself:
1 220K, 2W, 2% resistor
2.00
$2.00
1 hour
Approximate third-party repair cost:
100 MB @ 4.25 per MB
425.00
$425.00
Approximate dealer repair cost:
$795.00
1 new 5.25-inch 80 MB HDA
1 hour labor
725.00
70.00
294
The Dead Mac Scrolls
Hardware affected: LaCie Cirrus 80 external hard drive with
Computer Products model ML40-3101 power supply (35W
115/230 VAC).
Symptoms: The power switch is on and the cord is connected, but
the drive doesn't spin. The cooling fan doesn't turn. The unit makes
no sound whatsoever.
Typical history: The problem occurred out of the blue, while the
drive was on during a momentary power failure.
Probable diagnosis: The problem is in the power supply.
Solution: Check/replace fuse F2 (3A), transistor Q3 (SGS 12015-
D/2SC 3039), resistor R1 (56K, y4-watt, 5%) and resistor R4 (470K,
V2-watt, 5%).
F2 R4 Q3
1
w'
1 Hard
Drive
Approximate cost of repairing it yourself:
$6.18
1 Pico fuse (3A)
2.00
1 hour
1 2SC 3039 transistor
4.00
1 56K, V 4 -watt resistor
.09
1 470K, V2-watt 5% resistor
.09
Approximate third-party repair cost:
$340.00
80 MB @ 4.25 per MB
340.00
Approximate dealer repair cost:
$795.00
1 new 5.25-inch 80 MB HDA
725.00
1 hour labor
70.00
Hard drives and other peripherals
295
Hardware affected: Mirror/MagNet 40/40 external hard drive with
integral tape backup.
Symptoms: When connected to a Mac II along with other external
SCSI devices, the drive spins but does not mount.
Typical history: This very same drive worked fine on a Mac Plus
where it was the only drive.
Probable diagnosis: There's an ID conflict on the SCSI bus. Two ID
numbers are occupied by the Mirror/MagNet 40/40. The tape drive
is at ID 1 . The hard drive is at ID 5. If any other devices on the SCSI
bus share these numbers, the Mirror/MagNet 40/40 won't mount.
Solution: Verify that the Mirror/MagNet drive is the only device
occupying IDs 1 and 5. Renumber the other devices as necessary.
Verify that the ID selector switch on the back of the Mirror/MagNet
40/40 is set to 5 (not 1 or any other number).
V-kV y-j
E yTi Vyyyy.y‘j
Mirror/MagNet
40/40
Approximate cost of repairing it yourself: 10 min.
Approximate third-party repair cost: $170.00
40 MB @ 4.25 per MB 1 70.00
Approximate dealer repair cost: $670.00
1 new 3.5-inch 40 MB HDA 600.00
1 hour labor 70.00
296
The Dead Mac Scrolls
Hardware affected: Peak 20 external hard drive with 5.25-inch
Miniscribe (20 MB) mechanism.
Symptoms: The power switch is on and the fan spins, but the hard
drive does not start. Tapping on, picking up or moving the enclosure
may start the drive.
Probable diagnosis: One of the insulation displacement connectors
(I DCs) on one of the two power supply cables is intermittent.
Solution: Strip and solder both ends of each wire to the insulation
displacement connectors on both power supply cables. (Only one of
the two cables is shown in the diagram.)
Stripped & soldered
Approximate cost of repairing it yourself:
1 hour
Approximate third-party repair cost:
20 MB @ 4.25 per MB
$85.00
85.00
Approximate dealer repair cost:
1 new 3.5-inch 20 MB HDA
1 hour labor
$558.33
488.33
70.00
Hard drives and other peripherals
297
Hardware affected: Rodime Systems 20 Plus external hard drive
with 5.25-inch Seagate ST225N (20 MB) mechanism.
Symptoms: If this drive is powered up when you turn on your Mac
Plus, the red drive light blinks, and then you get a sad Mac with error
code OFOOOA. If you try to mount the drive using SCSI Probe 2.01,
you get a system error, ID=02. Other utilities report Mac Error #5.
Typical history: This drive was tested using Apple HD SC Setup
software (version 1 .5). The Update button was clicked, and then a
dialog box appeared saying. This is not a Macintosh disk, do you
want to initialize it? At that point, the Cancel button was clicked.
Probable diagnosis: The partition map is invalid.
Solution: Boot the computer from a floppy disk, wait for the desktop
to appear and then turn on the drive. Use third-party SCSI
formatting software (like Silverlining version 5.2/06) not Apple HD
SC Setup software, to repair the partition map.
Approximate cost of repairing it yourself:
$135.00
1 Silverlining (street price)
135.00
30 min.
Approximate third-party repair cost:
$85.00
20 MB @ 4.25 per MB
85.00
Approximate dealer repair cost:
$558.33
1 new 3.5-inch 20 MB HDA
488.33
1 hour labor
70.00
298
The Dead Mac Scrolls
Hardware affected: SuperMac DataFrame 40XP external hard drive
with Computer Products model ML40-3101 power supply (35W
1 1 5/230 VAC).
Symptoms: The power switch is on and the power cord is
connected, but the enclosure is dead. The green LED doesn't light.
The drive doesn't spin. The unit makes no sound whatsoever.
Typical history: The problem occurred out of the blue, while the
drive was on during a momentary power failure.
Probable diagnosis: The problem is in the power supply.
Solution: Check/replace fuse F2 (3A), transistor Q3 (SGS 12015-
D/2SC 3039), resistor R1 (56K, 1^-watt, 5%) and resistor R4 (470K,
1^-watt, 5%).
F2 R4 Q3
Hard Drive
Approximate cost of repairing It yourself:
$6.18
1 hour
1 Pico fuse (3A)
2.00
4.00
.09
.09
1 2SC 3039 transistor
1 56K, 14-watt resistor
1 470K, y2-watt resistor
Approximate third-party repair cost:
40 MB @ 4.25 per MB
170.00
$170.00
Approximate dealer repair cost:
1 new 3.5-inch 40 MB HDA
1 hour labor
$670.00
600.00
70.00
Hard drives and other peripherals
299
Hardware affected: SuperMac DataFrame 40XP external hard drive
with 5.25-inch NEC mechanism.
Symptoms: The power switch is on, the green LED does light, but
the hard drive doesn't spin. Tapping on, picking up or moving the
enclosure may start the drive.
Probable diagnosis: One of the insulation displacement connectors
(IDCs) on the power supply cable is intermittent.
Solution: Strip and solder both ends of each wire to the insulation
displacement connectors.
displaced
stripped & soldered
Approximate cost of repairing it yourself:
/ hour
Approximate third-party repair cost:
40 MB @ 4.25 per MB
170.00
$170.00
Approximate dealer repair cost:
1 new 3.5-inch 40 MB HDA
1 hour labor
600.00
70.00
$670.00
300
The Dead Mac Scrolls
Hardware affected: Warp 9/Photon external hard drive with 3.5-
inch Lapine mechanism.
Symptoms: The drive spins, but the red LED in the front panel
doesn't work, and the drive doesn't mount.
Typical history: This very same drive worked fine on a Mac Plus
where it was the only drive, but it failed as soon as it was connected
to a Mac with an internal hard drive. The LED problem began right
after the enclosure was taken apart and then reassembled.
Probable diagnosis: Originally, there was a SCSI ID conflict. The
Photon drive is jumpered for ID 0. When connected to a SCSI bus
where an internal drive is also jumpered for ID 0, the Photon drive
won't mount. Now, the LED cable is severed and short-circuiting.
Solution: Check/replace the front panel LED. Check/rejumper the
SCSI IDs, or move the Photon unit back to the Mac Plus.
Approximate cost of repairing it yourself:
20H
1 rectangular LED .20
1 hour
Approximate third-party repair cost:
$85.00
20 MB @ 4.25 per MB 85.00
Approximate dealer repair cost:
$558.33
1 new 3.5-inch 20 MB HDA 488.33
1 hour labor 70.00
Hard drives and other peripherals
301
Hardware affected: Apple CD SC.
Symptoms: An Apple CD SC is unable to read a disk.
Probable diagnosis: Accumulated dust is affecting the head
mechanism.
Solution: Blow out (he accumulated dust with compressed air. To
prevent recurrence of this problem, disconnect the intake fan.
Fan
Fan connector
Approximate cost of repairing it yourself:
1 hour
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$500.00
1 new CD ROM drive 500.00
302
The Dead Mac Scrolls
Hardware affected: Apple Scanner (original 300 dpi model).
Symptoms: The scanner works fine when it's the only external
device on the SCSI bus, but it intermittently locks the system and/or
prevents the Mac from booting when other external devices (hard
drive, LaserWriter II SC, et) are added to the bus.
Probable diagnosis: The problem is on the Apple Scanner logic
board.
Solution: Break off the filter networks at board locations CA4, CAS
and CA6. No replacements are necessary.
Approximate cost of repairing it yourself:
Approximate third-party repair cost:
1 hour labor
Approximate dealer repair cost:
1 new main logic board
1 hour labor
30 min.
65.00
$65.00
183.33
70.00
$253.33
Hard drives and other peripherals
303
Hardware affected: Hayes Smartmodem 2400 model number
231AA.
Symptoms: The modem turns on and the power light comes on,
but there is no transmit or receive.
Typical history: The modem had been connected to the printer
port, not the modem port, of a Mac 512Ke. The problem occurred
when you turned on AppleTalk (via the Control Panel or the
Chooser DA) while the modem was on.
Probable diagnosis: The problem is on the modem PCB.
Solution: Check/replace the MCI 489 chip (14-pin DIP, quad line
receiver, same as 75189) at board reference U22.
U22
Front
Approximate cost of repairing it yourself:
$1.25
1 75189 chip
1.25
1 hour
Approximate third-party repair cost:
$70.00
1 75189 chip
5.00
1 hour labor
65.00
Approximate dealer repair cost:
$379.00
1 Apple modem, 2400 baud 379.00
304
The Dead Mac Scrolls
Hardware affected: Hewlett Packard DeskJet/Plus/500.
Symptoms: After printing one page the printer stops, and the on
line light blinks (green) even though the printer isn't out of paper.
FF
FONT
MODE
ON LINE
Probable diagnosis: The problem is in the printer mechanism.
Solution: Check/resynchronize the transmission levers (located
under the top cover assembly).
Approximate cost of repairing it yourself:
75 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$399.00
1 new StyleWriter printer 399.00
Hard drives and other peripherals
305
Hardware affected: Hewlett Packard DeskWriter.
Symptoms: After a few lines, the DeskWriter prints Datacomm
buffer overrun — no DTR handshaking and ejects the page. Only the
smallest (one paragraph long) files can be printed.
Datacomm buffer overrun - no DTR handshaking
Typical History: The DeskWriter is connected to a Mac II running
virtual memory. The installed printer resource is version 2.1 or
earlier.
Probable diagnosis: Virtual memory does not support DTR
handshaking.
Solution: For a temporary solution open the Memory control panel
and turn off virtual memory. For a permanent solution, upgrade the
printer resource to version 2.2 or later.
Virtual Memory
Approximate cost of repairing it yourself:
Approximate third-party repair cost:
$65.00
2 min.
1 hour labor
65.00
Approximate dealer repair cost:
1 new StyleWriter printer
399.00
$399.00
306
The Dead Mac Scrolls
Hardware affected: Hewlett Packard DeskWriter.
Symptoms: In response to the Macintosh Print... command, the
DeskWriter invariably prints Datacomm Error — please check baud
rate and ejects the page. No part of the file is printed.
Datacomm Error - please check baud rate
Typical History: The DeskWriter is connected to a Mac II equipped
with a CSI-Hurdler serial card.
Probable diagnosis: The DeskWriter is communicating at 57,600
baud. Hurdler cards manufactured before Fall of 1991 don't support
57,600 baud.
Solution: Disconnect the DeskWriter from the Hurdler card.
Reconnect it to one of the Mac's built-in serial ports.
Approximate third-party repair cost:
1 hour labor
Approximate dealer repair cost:
1 new StyleWriter printer
2 min.
65.00
$65.00
399.00
$399.00
Hard drives and other peripherals
307
Hardware affected: Hewlett Packard DeskWriter.
Symptoms: If the computer is on when you switch on the
DeskWriter, it starts to print garbage characters in reverse video. The
garbage keeps coming out page after page. There's no way to have
the Mac and the DeskWriter powered up at the same time.
■4<i) *°'^0-|ql0~|Z|QP?T>~) + >+qP°''0-|q'^4~|Z|QP?
Probable diagnosis: The DeskWriter is connected to the printer
port and AppleTalk is turned on, but the DeskWriter is connected
via a serial cable (not connected via a LocalTalk cable).
Solution: Open the Chooser DA and deactivate AppleTalk.
Approximate cost of repairing it yourself:
2 min.
Approximate third-party repair cost:
$114.95
1 LocalTalk cable
49.95
1 hour labor
65.00
Approximate dealer repair cost:
$399.00
1 new StyleWriter printer 399.00
308
The Dead Mac Scrolls
Hardware affected: Hewlett Packard DeskWriter.
Symptoms: In response to the Macintosh Print... command, the
DeskWriter prints Error trap 10864 and ejects the page. No part of
the file is printed.
Error trap 1 0864
Probable diagnosis: The problem is on the Macintosh logic board
(not in the DeskWriter).
Solution: Check/replace the R/C network (20-pin DIP, Apple part
1 15-0002 or SMD, Apple part 1 15-50002) wired to the printer
port. Styles and board references vary from CPU to CPU.
□□□□□□□□□□
115-0002
□□□□□□□□□a
Approximate cost of repairing it yourself:
$12.00
1 Bourns filter
12.00
2 hours
Approximate third-party repair cost:
$154.00
1 Bourns filter
24.00
2 hours labor
130.00
Approximate dealer repair cost:
$570.00
1 new logic board
500.00
(average cost)
1 hour labor
70.00
CHAPTER 6
EXTERNAL MONITORS
310
The Dead Mac Scrolls
Hardware affected: AppleColor High-Resolution RGB monitor.
Symptoms: There's a thin horizontal line located about 2/4 inches
up from the bottom of the screen. The thin line is stationary. It
never goes away. It's visible in all programs.
Probable diagnosis: The thin line is a characteristic of the particular
Trinitron CRT (Sony part M34jNQ10X) used in this monitor. There's
nothing to be done about it.
Solution: Ignore the line or switch to a different brand of monitor.
Approximate cost of repairing it yourself:
zip
Approximate third-party repair cost:
zip
Approximate dealer repair cost:
zip
External monitors
311
Hardware affected: AppleColor High-Resolution RGB monitor.
Symptoms: The display is fine at 640 x 480, but when expanded to
672 X 51 2 or 704 x 51 2 using MaxAppleZoom (MAZ), it rolls from
top to bottom (no vertical hold).
Probable diagnosis: The problem is on the D board.
Solution: Carefully adjust variable resistor RV507, labeled V.HOLD,
counterclockwise for a stable picture. A very slight turn is generally
all that's required.
RV507
D
D
D
SONY
A
I ).mger!
High Vollagf
Approximate cost of repairing it yourself:
1 hour
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
312
The Dead Mac Scrolls
Hardware affected: AppleColor High-Resolution RGB monitor.
Symptoms: The display is fine at 640 x 480, but when it's expanded
to 672 X 51 2 or 704 x 51 2 using MAZ, the left side folds over.
24 items
File
24 items
Probable diagnosis: The problem is on the D board.
Solution: Carefully turn variable resistor RV501, labeled H.HOLD,
counterclockwise until the left side of the display unfolds.
RV501
Approximate cost of repairing it yourself:
1 hour
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
External monitors
313
Hardware affected: AppleColor High-Resolution RGB monitor.
Symptoms: For the first ten to fifteen minutes of operation, the
display intermittently jitters in and out of focus. Once it warms up,
it's OK.
ABCDlfChl|-;iMNO{V}RSTUVWXY?A9r[)EfOHI
I K I VNOPgUS U> V\V X V /A BCD€ FGHIJ-aMNOPOR
STUVW)CVZMK 1)1 1 r.HIIKlMNUKJRSKJV'WX YM
BCDffCHIMVNOfYJRSlUVV/XY/ABCDEFGHU
K1AT<0PQRSTUVAXYZ .XBCOEf CMIIICI.M'JOPQR
SIUUVXY/ABt OlfCM IMVSOFgRMUVWXVZ
ABCOcFGHiatlMf(.HI;iaA'i.NOK^RSlL\’WXVZA
BCDcf CHIKI MN< )pqR5TUVWXV/ABC0EFGHUK
LKTCPQFtSTUVV.'XYZ ABCDEECHIltClMNOlY^RSI
UX'WXYZABCDKC.MIIKlMNOHQRSrUVVV.XVZAB
COEF<>4UKLM90«>ESTIJV^^ .MICOt UJMIIM
%<1SIOPQ8S 1 UV\VX Y/ABCOfI CHIIKI MSt >W^RST
L nVX^TABCCEFGKBCm fCt ll;XI MN( )W.JRSTU
mXYZAeCDI KiHIRLAWOPQRSTLVWXY/ABCO
Probable diagnosis: The problem is on the D board.
Solution: Carefully turn variable resistor RV507, labeled V.HOLD,
counterclockwise for a stable picture. A very slight turn is generally
all that's required. Also see the next entry.
RV507
Approximate cost of repairing it yourself:
1 hour
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
314
The Dead Mac Scrolls
Hardware affected: AppleColor High-Resolution RGB monitor.
Symptoms: The display is always out of focus.
ABCDirOHIIKlMNOPQRSIL’WVKYZABCDUGUI
IWAtsOPlJilSUW.'XYZABCDEFGHUKLMNOPOR
Snj’/WXYZAECntfCMIlKlMSOrtjRStL'VWXVZA
BCClfOMiiaMNOryRSTLYWXY/ABCDEFGHU
lOMJOPQRsriuvwxvz ABcor f CN|ia mnopqr
SlUWXVZAHCOtfCnUKiMNOI’fjRSTUVWXYZ
ABCDEF<3‘*BCnirOMI,ltlMNOP(^itSrUVV\'XYM
BCOtFCniJKiMNOPQRSTLVWXv/ABCDEFQHUK
lAWOPGRSUAVWYZ ABCIHrCMIllCt VNOPQRSI
UV'VVXYZABCn{fCHI;K!.MNOPQRSILi\’WXVMB
(XOK>*>aJ.*X3P(>CTt//AXYZ ABCDff CMiKl
MNOPCiRStUVW'XYZ.ABCOirCMIlMMNOPQRST
UVW'XYZABCOEFGM.aCQnOllIKtMNOPQRSUJ
VVA*XYZABCOm:HIIKLM.SOPCjRStUVVVXVZABCO
Probable diagnosis: The problem is on the H board, located under
the control cover plate at the back of the monitor.
Solution: Carefully adjust the variable resistor RV 701, labeled
FOCUS, for a sharp, clear picture. Also see the next entry.
FOCUS
0
©.
7
o
AppleColor^”
High-Resolulion
RGB Monitor
EH
tlik ± 0
0
Approximate cost of repairing it yourself:
5 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
External monitors
315
Hardware affected; AppleColor High-Resolution RGB monitor.
Symptoms: The display is covered with red, green or blue shadows.
In extreme cases, it may resemble a 3-D comic book as seen
without the special eyeglasses.
Probable diagnosis: The problem is on the H board, located under
the control cover plate at the back of the monitor.
Solution: Carefully adjust the variable resistors labeled V-TWIST and
H-STAT, until the colored shadows disappear.
316
The Dead Mac Scrolls
Hardware affected: AppleColor High-Resolution RGB monitor.
Symptoms: There is a very noticeable red shadow in the upper right
corner of the display.
Typical history: No matter how you adjust the H-STAT and V-
TWIST controls (located on the H board), you can't solve the
problem.
Probable diagnosis: An unmarked coil, mounted horizontally on
top of the CRT yoke, is out of adjustment.
Solution: Carefully adjust the unmarked coil until the red shadow
disappears.
Approximate cost of repairing it yourself:
7 hour
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
External monitors
317
Hardware affected: AppleColor High-Resolution RGB monitor.
Symptoms: There is a very noticeable blue shadow on the left side
of the display. Other areas have thinner blue shadows.
w File
24 items
File
Typical history: No matter how you adjust the H-STAT and V-
TWIST controls (on the H board), you can't solve the problem.
Probable diagnosis: The problem is on the C board.
Solution: Carefully adjust variable resistor RV703, labeled H.STAT,
until the blue shadows disappear.
318
The Dead Mac Scrolls
Hardware affected: AppleColor High-Resolution RGB monitor.
Symptoms: All of a sudden, there seem to be colored blotches on
the display.
Typical history: The problem occurred right after you lifted the
monitor (to clean underneath it?) while the power was on.
Probable diagnosis: Moving the monitor without turning off the
power magnetized the CRT.
Solution: Demagnetize the CRT by pressing the degauss switch.
o
©
7
e
AppleColor^”
High-Resolution
KGB Monitor
ED
lol
± 0
G
Degauss
Approximate cost of repairing it yourself:
1 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
External monitors
319
Hardware affected: AppleColor High-Resolution RGB monitor.
Symptoms: The entire display is tinted red. Everything looks pink!
Probable diagnosis: The problem is on the B board.
Solution: Carefully adjust variable resistor RV71 1, labeled R.BKG,
clockwise until the red tint just disappears. A very s//gbt clockwise
turn is generally all that's required.
320
The Dead Mac Scrolls
Hardware affected: AppleColor High-Resolution RGB monitor.
Symptoms: The entire display is tinted green. Everything looks sick!
Probable diagnosis: The problem is on the B board.
Solution: Carefully adjust variable resistor RV721, labeled G.BKG,
clockwise until the green tint just disappears. A ve/ys//ghf clockwise
turn is generally all that's required.
External monitors
321
Hardware affected: AppleColor High-Resolution RGB monitor.
Symptoms: The entire display is tinted blue. Everything looks cold!
Probable diagnosis: The problem is on the B board.
Solution: Carefully adjust variable resistor RV731, labeled B.BKG,
clockwise until the blue tint just disappears. A very s/Zghf clockwise
turn is generally all that's required.
322
The Dead Mac Scrolls
Hardware affected: AppleColor High-Resolution RGB monitor.
Symptoms: After a short while, the monitor dies — the display
collapses, and the green power LED goes out. Without a display, the
whole computer becomes unusable.
Probable diagnosis: The problem is on the H board, located under
the control cover plate at the back of the monitor.
Solution: Carefully turn variable resistor RV 702, labeled CUT-OFF,
counterclockwise for a darker picture. If this fails to solve the
problem, see the next entry.
Approximate cost of repairing it yourself: 7 min.
Approximate third-party repair cost: $65.00
1 hour labor 65.00
Approximate dealer repair cost: $70.00
1 hour labor 70.00
External monitors
323
Hardware affected: AppleColor High-Resolution RGB monitor.
Symptoms: After a short while, the monitor dies — the display
collapses and the green power LED goes out. Without a display, the
whole computer becomes unusable.
Typical history: Adjusting the CDT-OFF control (counterclockwise)
did not solve the problem.
Probable diagnosis: The problem is in the high-voltage circuit.
Solution: Replace the red, high-voltage resistor (Sony part 1-230-
666-21) located inside the monitor. Also see the prior entry.
HVR
Approximate cost of repairing it yourself:
$42.94
1 HVR (Sony 1-230-666-21)
42.94
1 hour
Approximate third-party repair cost:
$151.00
1 HVR (Sony 1-230-666-21)
86.00
1 hour labor
65.00
Approximate dealer repair cost:
$242.00
1 HVC (Apple 910-0058) 172.00
1 hour labor
70.00
324
The Dead Mac Scrolls
Hardware affected: AppleColor High-Resolution RGB monitor.
Symptoms: On powerup, the monitor clicks and the green light
comes on, but there's no video.
Probable diagnosis: The brightness and contrast controls (located on
the right side of the cabinet) have been inadvertently turned down.
Solution: Adjust the brightness and contrast controls. If that's not it,
see the next entry.
0
^
7
Brightness — [ I
Contrast — [ 1
9
AppleColor^'*
High-Resolulion
RGB Monitor
Ga
IHl
0
O
Approximate cost of repairing it yourself:
/ min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
External monitors
325
Hardware affected: AppleColor High-Resolution RGB monitor.
Symptoms: On powerup, the monitor clicks and the green light
comes on, but there's no video.
Typical history: Adjusting the brightness and contrast controls
(located on the right side of the cabinet) had no effect.
Probable diagnosis: The problem is on the D board.
Solution: Check/replace the HZ3983 zener diode (39V) at board
reference D504.
D
D
O
O
o
o
o
o
D
SONY
A
Danger!
High Voltage
D504
Approximate cost of repairing it yourself:
1 39V zener diode
1.00
1 hour
Approximate third-party repair cost:
$70.00
1 39V zener diode
5.00
1 hour labor
65.00
Approximate dealer repair cost:
$316.67
1 main logic board
246.67
1 hour labor
70.00
326
The Dead Mac Scrolls
Hardware affected: AppleColor High-Resolution RGB monitor.
Symptoms: The display is noticeably off center. Otherwise, the
monitor seems OK.
Probable diagnosis: The problem is on the H board.
Solution: Carefully turn the variable resistors labeled H.CENT and
V.CENT until the display is centered on the screen.
H.CENT
V.CENT
AppleColor^^*
High-Rcsoliilion
RGB Monitor
E3
IDI
± ©
O
Approximate cost of repairing it yourself:
5 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
External monitors
327
Hardware affected: AppleColor High-Resolution RGB monitor.
Symptoms: The display is horizontally compressed. It lacks width.
Probable diagnosis: The problem is on the H board.
Solution: To restore the factory specified width based on 640 x 480
at 69 ppi, carefully turn the variable resistor labeled WIDTH until
the display measures 9.28 inches wide.
WIDTH
Approximate cost of repairing it yourself:
5 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
328
The Dead Mac Scrolls
Hardware affected: AppleColor High-Resolution RGB monitor.
Symptoms: The display is vertically compressed. It lacks height.
Probable diagnosis: The problem is on the H board.
Solution: To restore the factory specified height based on 640 x 480
at 69 ppi, carefully turn the variable resistor labeled HEIGHT until
the display measures 6.96 inches high.
HEIGHT
o
AppleColor^”
High-Resolution
RGB Monitor
ED
1 0
0
Approximate cost of repairing it yourself:
5 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
External monitors
329
Hardware affected: Apple High-Resolution Monochrome monitor.
Symptoms: The display is fine at 640 x 480, but when expanded to
672 X 512 or 704 x 512 using MaxAppleZoom (MAZ), it rolls from
top to bottom (no vertical hold).
Probable diagnosis: The problem is on the H board, located under
the control cover plate at the back of the monitor.
Solution: Carefully adjust the variable resistor labeled V.HOLD for a
stable picture.
V. HOLD
Approximate cost of repairing it yourself:
1 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
330
The Dead Mac Scrolls
Hardware affected: Apple High-Resolution Monochrome monitor.
Symptoms: The display is always out of focus.
A8COU MNor (>{^1 o vw X « /ABCDu aii
in.\iNCXM&IL\WXY/AfiCOEFOHUKLMKOPQR
STUVWXV2A9C l>; » { 4 tRl JVW XY2X
8CDH CM |K1 XY/ABCOE^GHU
KJJHOfCPBWAXa AfiCDEIGHIjiaMNOK}il
STLfVW«V2 ABC 01 ICHIKIMN»IK)RSI LVWXYZ
ABCOErOiiK Ot I U M<1 MNCM\|RSILrV\VXYZA
new » Cl fllM MAM ll-C/MYl UXWXY/ABCOEFCSHIJK
iAfO>onsn//wxYZ Aacoi rcniiMi MNt)<>QRST
CWVXV/A3CD«ICMi|*lMNfJPQRSIL'V\VXY7AB
COEPQMUWWrCPORSTlMVXVZ ABCmfCHliM
MNOPQ«S»UV\V*V7ABCOtlCHI.KlM.MOK)«ST
lAWX V/ABCOEFOkMlCmi CHIKl MNY1PQ8STL'
VWXVZABCD0Ci>IHXIMNOPQttSUKWXY7ABCD
Probable diagnosis: The problem is on the H board, located under
the control cover plate at the back of the monitor.
Solution: Carefully adjust the variable resistor, labeled FOCUS, for a
sharp, clear picture.
FOCUS
Approximate cost of repairing it yourself:
5 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
External monitors
331
Hardware affected: Apple High-Resolution Monochrome monitor.
Symptoms: After a short while, the monitor dies — the display
collapses and the green power LED goes out. Without a display, the
whole computer becomes unusable.
Probable diagnosis: The problem is on the H board, located under
the control cover plate at the back of the monitor.
Solution: Carefully turn the variable resistor labeled CUT-OFF
counterclockwise for a darker picture.
CUT-OFF
Approximate cost of repairing it yourself:
1 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
332
The Dead Mac Scrolls
Hardware affected: Apple High-Resolution Monochrome monitor.
Symptoms: On powerup, the monitor clicks and the green light
comes on, but there's no video.
Probable diagnosis: The brightness and contrast controls (located on
the right side of the cabinet) have been inadvertently turned down.
Solution: Adjust the brightness and contrast controls.
Approximate cost of repairing it yourself:
1 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
External monitors
333
Hardware affected: Apple High-Resolution Monochrome monitor.
Symptoms: The display is noticeably off center. Otherwise, the
monitor seems OK.
Probable diagnosis: The problem is on the H board.
Solution: Carefully turn the variable resistor labeled H.HOLD until
the display is centered on the screen.
H.HOLD
0
©.
7
1 1 II 1 1 1 1 1 1 1 1 1 1 1 1 1 II 1 1 1 1 1 1 II 1 1
E
E
o
o
o
o
Appie^**
Hgh-Resolution
Monochrome
Monitor
G5]
0
V
•
IDI 1
(3
J
©
Approximate cost of repairing it yourself:
5 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
334
The Dead Mac Scrolls
Hardware affected: Apple High-Resolution Monochrome monitor.
Symptoms: The display is dark and horizontally compressed. It's
dingy looking and it lacks width.
Probable diagnosis: The problem is on the H board.
Solution: To restore the factory specified width and appearance
based on 640 x 480 at 76 ppi, carefully turn the variable resistor
labeled WIDTH until the display measures 8.42 inches wide. Also
see the next entry.
WIDTH
Approximate cost of repairing it yourself:
5 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
External monitors
335
Hardware affected: Apple High-Resolution Monochrome monitor.
Symptoms: The display is vertically compressed. It lacks height.
Probable diagnosis: The problem is on the H board, located under
the control cover plate at the back of the monitor.
Solution: To restore the factory specified height based on 640 x 480
at 76 ppi, carefully turn the variable resistor labeled HEICHT until
the display measures 6.32 inches wide. Also see the prior entry.
HEIGHT
Approximate cost of repairing it yourself:
5 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
336
The Dead Mac Scrolls
Hardware affected: Any external monitor connected to a
Macintosh Plus, SE or SE/30.
Symptoms: There is a black line rippling through the display on the
external monitor.
Line
Probable diagnosis: Radio frequency interference (RFI) emanating
from the Macintosh analog board (located on the left side of the
Mac's cabinet) is causing the line.
Solution: Relocate the external monitor to the right of the
Macintosh. If the rippling line persists, separate the two by an
additional twelve to eighteen inches.
Approximate cost of repairing it yourself:
15 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
External monitors
337
Hardware affected: Any primary or secondary monitor connected
to a Macintosh II.
Symptoms: There is a black line rippling through the display on one
or both of the monitors.
Probable diagnosis: Radio frequency interference (RFI) emanating
from one or both of the monitors is causing the line(s).
Solution: Reverse the location of the monitors. If the rippling
persists, separate the two by an additional twelve to eighteen
inches.
Approximate cost of repairing it yourself:
15 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
338
The Dead Mac Scrolls
Hardware affected: Any VGA monitor.
Symptoms: The supplied video cable does not mate with the
15-pin video connector built into a Macintosh L
Probable diagnosis: The monitor was supplied with a standard VGA
cable for PC use. VGA cables have high-density 15-pin connectors.
Solution: Construct a Mac LC to VGA monitor adapter as shown. In
addition, jumper pin 7 to pin 1 0 on the Apple end.
VGA End (DB15HD-S) Apple End (DB15-P)
1
Red
2
Red
2
Green
5
Green
3
Blue
9
Blue
6
Ground
1
Red return
7
Ground
6
Green return
8
Ground
13
Blue return
10
Ground
14
Hsync return
13
Hsync
15
Hsync
14
Vsync
12
Vsync
Approximate cost of repairing it yourself:
$3.76
1 DB15-P(plug)
0.55
7 hour
1 DB15-H (hood)
0.39
1 DB15HD-S (socket)
1.50
1 DB9-H/15HD-H (hood)
0.39
1 foot of 1 0-conductor cable
0.33
Approximate third-party repair cost:
$38.50
miscellaneous materials
6.00
V 2 hour labor (flat rate)
32.50
Approximate dealer repair cost:
$500.00
1 12-inch Apple RGB monitor 500.00
External monitors
339
Hardware affected: Goldstar 1450 Plus Multiscan monitor.
Symptoms: The supplied cable does not mate with an Apple
Macintosh II video card. The 1 5-pin connector is too small.
Probable diagnosis: The monitor was supplied with a standard VGA
cable for PC use. VGA cables have high-density 15-pin connectors.
Solution: Cut off the supplied DBl 5-HDP (D-sub, 1 5-pin, high-
density, plug) and rewire the Apple end of the cable as shown (or
make a DB15HD-S to DB15-P adapter).
Goldstar End (DB15HD-S) Apple End (DB15-P)
6 Ground
7 Ground
8 Ground
S Shell (Ground)
2 Green
3 Blue
1 Red
2 Red
5 Green
9 Blue
1 Red return
6 Green return
13 Blue return
4 Csync return
Approximate cost of repairing it yourself:
1 DBl 5-P (D-sub, 15-pin, plug)
1 DBl 5-H (D-sub, 1 5-pin, hood)
0.55
0.39
94 ^
1 hour
Approximate third-party repair cost:
1 DBl 5-P (D-sub, 1 5-pin, plug)
1 DBl 5-H (D-sub, 1 5-pin, hood)
V2 hour labor (flat rate)
1.00
1.00
32.50
$34.50
Approximate dealer repair cost:
1 AppleColor RGB monitor
995.00
$995.00
340
The Dead Mac Scrolls
Hardware affected: Packard Bell PB 1272A, Samsung MG 2565
and other 12-inch TTL monitors built on the MG 2565 chassis.
Symptoms: Does not work properly (no horizontal sync) with the
TTL video card described in Macintosh Repair & Upgrade Secrets.
Typical history: The same monitor works fine when connected to a
PC-compatible TTL video card.
Probable diagnosis: The PCB has to be modified for Macintosh use.
Solution: Replace OEM resistor R606 (lOK, 14-watt, 5%) with a
6.8K, 14-watt, 5% resistor. Replace OEM resistor R602 (lOK, 14-watt,
5%) labeled H-POSIT with a lOK vertical-style trimmer
potentiometer (RS 271-218). Adjust the H-HOLD, V-HOLD, V-
SIZE, H-WIDTH, H-POSIT and LINEARITY controls for a stable,
full-screen picture.
Approximate cost of repairing it yourself:
78^
1 lOK vertical trimmer potentiometer
.69
30 min.
1 6.8K 14-watt, 5% resistor
.09
Approximate third-party repair cost:
$75.00
miscellaneous small parts
10.00
1 hour labor
65.00
Approximate dealer repair cost:
$470.00
1 new Mac monitor upgrade 400.00
1 hour labor
70.00
External monitors
341
Hardware affected: Princeton Max 15 Multiscan monitor.
Symptoms: The supplied cable does not mate with an Apple
Macintosh II Video Card. The 15-pin connector is too small.
Probable diagnosis: The monitor was supplied with a standard VGA
cable for PC use. VGA cables have high-density 15-pin connectors.
Solution: Cut off the supplied DB1 5-HDP (D-sub, 1 5-pin, high-
density, plug) and rewire the Apple end of the cable as shown (or
make a new DB25-P to DB15-P cable).
Princeton End (DB25-P) Apple End (DB1 5-P)
1 1
Red
2
Red
12
Green
5
Green
13
Blue
9
Blue
16
Ground
1
Red return
17
Ground
6
Green return
18
Ground
13
Blue return
20
Ground
4
Csync return
Approximate cost of repairing it yourself:
94(
1 DB15-P (D-sub, 15-pin, plug)
0.55
1 hour
1 DB15-H (D-sub, 15-pin, hood)
0.39
Approximate third-party repair cost:
$34.50
1 DB15-P (D-sub, 15-pin, plug)
1.00
1 DB15-H (D-sub, 15-pin, hood)
1.00
V2 hour labor (flat rate)
32.50
Approximate dealer repair cost:
$300.00
1 12-inch Apple
Monochrome monitor 300.00
342
The Dead Mac Scrolls
Hardware affected: Samsung MG 2525 12-inch TTL monitor.
Symptoms: Does not work properly (no horizontal sync) with the
build-it-yourself TTL video card described in Macintosh Repair &
Upgrade Secrets.
Typical history: The same monitor works fine when connected to a
PC-compatible TTL video card.
Probable diagnosis: The PCB at the bottom of the Samsung
monitor has to be modified for Macintosh use.
Solution: Replace OEM resistor R304 with a 10K, V4-watt, 5%
resistor. Readjust the H-HOLD and V-HOLD controls for a stable
picture.
Approximate cost of repairing it yourself:
090
1 1 0K V4-watt, 5% resistor
.09
30 min.
Approximate third-party repair cost:
$70.00
1 1 OK 14-watt, 5% resistor
5.00
1 hour labor
65.00
Approximate dealer repair cost:
$470.00
1 new Mac monitor upgrade 400.00
1 hour labor
70.00
External monitors
343
Hardware affected: Sony CPD 1302 Multiscan monitor.
Symptoms: The sides of the video display curve inward (showing
pincushion distortion).
Probable diagnosis: The problem is on the D board.
Solution: Adjust variable resistor RV504, labeled PINAMP, for a
square picture.
I
RV504
Face down view
Approximate cost of repairing it yourself:
1 hour
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
344
The Dead Mac Scrolls
Hardware affected: Sony CPD 1302 Multiscan monitor.
Symptoms: After a while, the vertical height collapses to
approximately 66% of normal size. Tapping the cabinet may or may
not restore the full height.
Probable diagnosis: The problem is on the H board.
Solution: Clean/replace variable resistor RV 804, Sony part 1-237-
359-1 1 (res. var. carbon 5K).
U — RV804
Approximate cost of repairing it yourself:
1 Sony part 1-237-359-11
Approximate third-party repair cost:
1 Sony part 1-237-359-11
1 hour labor
Approximate dealer repair cost:
1 new H board
1 hour labor
1.46
$1.46
30 min.
5.00
65.00
$70.00
50.00
70.00
$120.00
External monitors
345
Hardware affected: Sony CPD 1302 Multiscan monitor.
Symptoms: The monitor will not switch off.
Probable diagnosis: The SPOT power switch is broken.
Solution: Rewire/replace S901, Sony part 1-572-599-11 (switch
seesaw AC power) .
S901
Approximate cost of repairing it yourself:
1 Sony part 1 -572-599-1 1
12.36
$12.36
30 min.
Approximate third-party repair cost:
1 Sony part 1 -572-599-1 1
1 hour labor
$90.00
25.00
65.00
Approximate dealer repair cost:
1 Sony part 1-572-599-11
1 hour labor
$120.00
50.00
70.00
346
The Dead Mac Scrolls
Hardware affected: Sony CPD 1302 Multiscan monitor.
Symptoms: The supplied cable does not mate with an Apple
Macintosh II Video Card. The 15-pin connector is too small. The
monitor is useless.
Probable diagnosis: The monitor was supplied with a standard VGA
cable for PC use. VGA cables have high-density 15-pin connectors.
Solution: Cut off the supplied DB1 5-HDP (D-sub, 1 5-pin, high-
density, plug). Rewire the Apple end of the cable as shown. Set the
monitor's RGB input-selector switch (located under the service
panel at the back of the monitor) to analog, not digital.
Sonv End (DB9-P)
Aoole End (DB15-P)
1 Ground
1 Red return
1 Ground
4 Csync return
3 Red
2 Red
4 Green
5 Green
5 Blue
9 Blue
Approximate cost of repairing it yourself:
94(?
1 DB15-P (D-sub, 15-pin, plug)
0.55
1 hour
1 DB1 5-H (D-sub, 1 5-pin, hood)
0.39
Approximate third-party repair cost:
$34.50
1 DB1 5-P (D-sub, 1 5-pin, plug)
1.00
1 DB15-H (D-sub, 15-pin, hood)
1.00
1 V 2 hour labor (flat rate)
32.50
Approximate dealer repair cost:
$995.00
1 AppleColor RGB monitor 995.00
External monitors
347
Hardware affected: Sony CPD 1302 Multiscan monitor.
Symptoms: The existing Mac II cable does not work on a Mac SE
equipped with an Orchid ColorVue SE video card.
Typical history: This same monitor and cable combination works
fine on a Macintosh II equipped with an Apple Mac II Video Card.
Probable diagnosis: The composite-synch lines were never
connected in the Sony CPD 1302 to Mac II cable.
Solution: Use a ready-made Sony CPD 1 302 to VGA cable (and
hook up to the VGA connector on the ColorVue SE card) or rewire
the existing Mac II cable as shown (italics indicate where changes
are to be made).
Sonv End (DB9-P)
Aoole End (DB1
1
Ground
1
Red return
1
Ground
4
Csync return
1
Ground
6
Green return
1
Ground
13
Blue return
3
Red
2
Red
4
Green
5
Green
5
Blue
9
Blue
8
Csync
3
Csync
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$32.50
¥2 hour labor (flat rate) 32.50
Approximate dealer repair cost:
$995.00
1 AppleColor RGB monitor 995.00
CHAPTER 7
IMACEWRITER I
(STANDARD & WIDE)
ImageWriter / (standard & wide)
349
Symptoms: The Select lamp lights and the printer is properly
selected in the Chooser, but it doesn't respond to Print...
commands. The built-in self-test does work.
Typical history: This same printer works fine on an Apple II, ll-r or
Me and/or on a Mac 128K, 51 2K or 512Ke, but it doesn't work
when connected to a Mac Plus, SE, II, Classic or LC.
Probable diagnosis: The DIP switches are incorrectly set for all-
around Mac use.
Solution: Position the DIP switches inside the ImageWriter exactly
as shown. If that doesn't do it, see the next entry.
e i 3 j +■ c 3 r
00000000
e-:n NSdo
DIP
switches
Approximate cost of repairing it yourself:
5 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
350
The Dead Mac Scrolls
Symptoms: The Select lamp lights and the printer is properly
selected in the Chooser, but it doesn't respond to Print...
commands. The built-in self-test does work.
Typical history: The DIP switch settings agree with the prior entry.
Probable diagnosis: The miniDIN8-P to DB25-P serial cable is wired
for Mac-to-modem use (not Mac-to-printer use).
Solution: Check/rewire the existing miniDIN8-P to DB25-P cable as
shown or (if available) substitute a Mac-to-serial printer cable that
you know works. If that still doesn't do it, see the next entry.
Mac End (miniPIN8-P)
2 DSR
3TXD-
4 SG
5 RXD-
8RXD-T
F Ground
ImageWriter End (DB25-P)
20 DTR
3 RxD
7 SG
2TxD
7 SG
F Ground
Approximate cost of repairing it yourself:
$70.00
1 Mac-to-serial printer cable
10.00
5 min.
Approximate third-party repair cost:
$65.00
1 hour labor
65.00
Approximate dealer repair cost:
$110.00
1 Mac-to-serial printer cable
40.00
1 hour labor
70.00
ImaseWriter I (standard & wide)
351
Symptoms: The Select lamp lights and the printer is properly selected
in the Chooser, but it doesn't respond to Print... commands. The
built-in self-test does work.
Typical history: The Mac and the miniDIN8-P to DB25-P cable are
known to be OK because both work fine with other ImageWriter
printers. The current ImageWriter DIP switch settings are correct.
Probable diagnosis: The problem is on the ImageWriter logic board.
Solution: Replace the 74LS393N 1C (14-pin DIP, dual 4-bit binary
ripple counter) at board reference IC1 2. Also see the prior entry.
Approximate cost of repairing it yourself:
7H
1 74LS393N 1C
.79
1 hour
Approximate third-party repair cost:
$70.00
1 74LS393N 1C
5.00
1 hour labor
65.00
Approximate dealer repair cost:
$315.00
1 new main logic board
245.00
1 hour labor
70.00
352
The Dead Mac Scrolls
Symptoms: The Select lamp does not light, the printer does not
respond to Print... commands and the built-in self-test does not
work.
Probable diagnosis: The carrier cover is incorrectly positioned, or
the safety magnet (underneath the carrier cover) is missing.
Solution: Check/reposition the carrier cover. Check the safety
magnet. Verify the operation of the reed switch (normally activated
by the carrier cover magnet) with a small crafts magnet. If everything
under the carrier cover checks OK, see the next entry.
Magnet (underneath the carrier cover)
Reed switch (underneath the magnet)
Approximate cost of repairing it yourself:
49(t
1 crafts magnet
.49
10 min.
Approximate third-party repair cost:
$70.00
1 safety magnet
5.00
1 hour labor
65.00
Approximate dealer repair cost:
$115.00
1 new carrier cover
45.00
1 hour labor
70.00
ImageWriter I (standard & wide)
353
Symptoms: The Select lamp does not light, the Printer does not
respond to Print... commands and the built-in self-test does not
work.
Typical history: The carrier cover is on the printer. The carrier
cover magnet is present. The reed switch seems to work.
Probable diagnosis: The problem is on the ImageWriter logic
board.
Solution: Check for loose metallic objects (coins, hair pins, paper
clips) inside the printer. Check/replace the 5 A glass fuse (ACC 5) at
board reference FU3. If that still doesn't do it, see the next entry.
Approximate cost of repairing it yourself:
49(t
1 5A fuse (ACC 5)
.49
1 hour
Approximate third-party repair cost:
$70.00
1 5A fuse (ACC 5)
5.00
1 hour labor
65.00
Approximate dealer repair cost:
$315.00
1 new main logic board
245.00
1 hour labor
70.00
354
The Dead Mac Scrolls
Symptoms: The Select lamp does not light, the printer does not
respond to Print... commands. The built-in self-test does not work.
Typical history: The carrier cover is on the printer. The carrier-
cover magnet is present. The reed switch seems to work. No
metallic objects were found inside the printer. The fuses have been
tested, and they all check good.
Probable diagnosis: The problem is on the ImageWriter logic
board.
Solution: Check/replace the 8085A-2 1C (40-pin CPU, 8-bit, N-
channel, 5MHz) at board reference ICl 0. Also see the prior entry.
Approximate cost of repairing it yourself:
$3.59
1 8085A-2 1C
3.59
1 hour
Approximate third-party repair cost:
$72.18
1 8085A-2 1C
7.18
1 hour labor
65.00
Approximate dealer repair cost:
$315.00
1 new main logic board 245.00
1 hour labor
70.00
ImageWriter / (standard & wide)
355
Symptoms: The Select lamp does light and the printer responds to
Print... commands, but there is no line feed. The carrier motor
works, the typehead fires and the ribbon deck goes back and forth,
but every line prints on top of the prior line. The Form Feed button
does work, but the Line Feed button does not work. Except for the
line-feed problem, the built-in self-test also works.
Probable diagnosis: The problem is on the ImageWriter logic
board.
Solution: Check/replace the SN 7406 1C (14-pin DIP, hex inverter
buffer/driver, open collector, high voltage) at board reference IC4.
Approximate cost of repairing it yourself:
39(t
1 SN 7406 1C
.39
1 hour
Approximate third-party repair cost:
$70.00
1 SN 7406 1C
5.00
1 hour labor
65.00
Approximate dealer repair cost:
$315.00
1 new main logic board 245.00
1 hour labor
70.00
356
The Dead Mac Scrolls
Symptoms: The printer makes a horrible grinding noise. It prints a
few lines, stutters and then stalls.
Probable diagnosis: The carrier shaft and the carriage guide rail are
so dry and gritty that the carriage return motor can barely move the
ribbon deck back and forth.
Solution: Clean and lubricate the carrier shaft and the carriage
guide rail.
Shaft
Rail-
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
tmaseWriter I (standard & wide)
357
Symptoms: The unit makes an unusually loud clunk..., clunk...,
clunk... noise when printing. Other than the loud, rhythmic
clunking, the printer works OK.
Probable diagnosis: Torque resulting from the carriage return is
causing a loose carrier motor to rap against the printer cabinet.
Solution: Loosen the carrier motor screws, and reposition the carrier
motor. If that doesn't work, lift up the printer and place a small foam
pad (made from scrap packing material) between the carrier motor
and the printer table. When the pad is compressed by the weight of
the printer, it will lift the motor and dampen the clunking noise.
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$65.00
1 hour labor
65.00
Approximate dealer repair cost:
$47.04
1 new carrier motor
47.04
1 hour labor
70.00
358
The Dead Mac Scrolls
Symptoms: The ribbon cartridge deck makes a scraping noise as it
moves from side to side. Printed pages contain regularly spaced
horizontal scratch marks (even in the white spaces).
abcdefghijkimnopqrstuvwxyzabcdefghijkimnopqrstuvwxyz
abcdefghijkimnopqrstuvwxyz
Uk/V^C4V^I^I IIJ
i !\ ! m Dcpcj rstu Wv'xyz
Probable diagnosis: The ribbon guide plate (on the typehead) is
torn. A metal hangnail is catching on the paper stock.
Solution: Replace the ribbon guide plate (C. Itoh CLA20-13801).
Guide plate
Approximate cost of repairing it yourself:
$1.00
1 ribbon guide plate
1.00
30 min.
Approximate third-party repair cost:
$70.00
1 ribbon guide plate
5.00
1 hour labor
65.00
Approximate dealer repair cost:
$243.33
1 new printhead assembly 1
73.33
1 hour labor
70.00
ImaseWriter / (standard & wide)
359
Symptoms: The first line printed on every page is squashed.
The first line printed on every page is squashed.
The second and every other line printed is fine.
Probable diagnosis: The roller shaft assembly is so dry and gritty that
it's causing the paper to buckle.
Solution: Clean and lubricate the roller shaft. If that doesn't do it,
see the next entry.
Roller shaft —
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
1 hour labor
65.00
$65.00
Approximate dealer repair cost:
1 hour labor
70.00
$70.00
360
The Dead Mac Scrolls
Symptoms: The first line printed on every page is squashed.
The first line printed on every page is squashed.
The second and every other line printed is fine.
Typical history: Servicing the roller shaft didn't fix the problem.
Probable diagnosis: The clear plastic noise cover is warped. The
weight of the bent plastic is pressing on the paper.
Solution: Lift the weight by sticking a small foam pad between the
noise cover and the carrier cover. Also see the prior entry.
Noise cover
Foam pad
Carrier cover
Approximate cost of repairing it yourself:
5 min.
Approximate third-party repair cost:
$65.00
1 hour labor
65.00
Approximate dealer repair cost:
$115.00
1 new noise cover
45.00
1 hour labor
70.00
ImageWriter I (standard & wide)
361
Symptoms: There are regularly spaced missing clots in the printout.
Th(=>rp arp rpoiil:irl\/ cnarprl miccino rlntc in fhp nrintmit
w,
Th or/3 oro romilarix/ cnor'orl miccino riofc in tKo nrintnuit
I ^ ^ I J ^ ^ ^ ••• \^t i ^ • I • • C •
Probable diagnosis: The contacts on the typehead PCB are dirty.
Solution: Clean the contacts with a pencil eraser. If that doesn't do
it, see the next entry.
Typehead
PCB —
i
i
V
J
Approximate cost of repairing it yourself:
5 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$243.33
1 new printhead assembly 173.33
1 hour labor 70.00
362
The Dead Mac Scrolls
Symptoms: There are regularly spaced missing dots in the printout.
Th6r0 3r0 r0ou!3r!'^ so3C0d missin^' dots in th0 orintout.
Typical history: Cleaning the typehead PCB made no difference.
Probable diagnosis: One of the striker wires in the typehead is rusty.
The wire is hanging on the plastic ribbon guide (instead of slipping
through and onto the paper).
Solution: Spray the ribbon guide with a drop or two of WD-40. Let
it soak in for several hours (preferably overnight) before reinstalling
the typehead. If that still doesn't do it, see the next entry.
Approximate cost of repairing it yourself:
5 min.
Approximate third*party repair cost:
1 hour labor
65.00
$65.00
Approximate dealer repair cost:
1 new printhead assembly
1 hour labor
173.33
70.00
$243.33
ImageWriter I (standard & wide)
363
Symptoms: There are regularly spaced missing dots in the printout.
Typical history: Cleaning the contacts on the typehead made no
difference. Lubricating the ribbon guide didn't help.
Thorp arp rpoiil;irl\/ cn;>rprl miccino rintc in thp nrintoiit
■* — *^o ■/ ‘^1
Th0f0 3T0 r02i-«' ! 3?*! y sp3C0cl missing dots in th0 printout.
Probable diagnosis: One of the striker wires in the typehead is bent
or broken, and/or one of the return springs is weak.
Solution: Send out the typehead (not the whole printer) to a service
depot for repair. Also see the prior entry.
Broken >
Approximate cost of repairing it yourself:
$38.00
1 typehead repair
38.00
5 min.
Approximate third-party repair cost:
$141.00
1 rebuilt typehead
76.00
1 hour labor
65.00
Approximate dealer repair cost:
$243.33
1 new printhead assembly 1
73.33
1 hour labor
70.00
364
The Dead Mac Scrolls
Symptoms: Best quality printing is wavy. Vertical lines are uneven.
Best qviatity printirtg \s v^svy. Vert\cs( <mes sire uv^even.
Best qualify printing is wsvy. Vertissl )ir?es are uneven.
Probable diagnosis: The character deviation is out of adjustment.
Solution: Adjust variable resistor VRl (located under the carrier
cover) for best linearity. If that doesn't do it, see the next entry.
Approximate cost of repairing it yourself:
10 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
ImaseWriter I (standard & wide)
365
Symptoms: Best quality printing is wavy. Vertical lines are uneven.
prmtmg is v^avy. urieven.
Besi- printing is wavy. Vert/ca) )i/7ea are uneven.
Typical history: Adjusting VR1 (see previous entry) did not
completely eliminate the problem.
Probable diagnosis: The carrier-wire tension is too loose.
Solution: Adjust the carrier-wire tension lever (located under the
cabinet top), then readjust VRl (see previous entry). If that still
doesn't do it, see the next entry.
Approximate cost of repairing it yourself:
1 hour
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
366
The Dead Mac Scrolls
Symptoms: Best quality printing is wavy. Vertical lines are uneven.
Best piriinting \s v^avy. Verticst (\nes sire itneven.
Best prir?tir?g is wavy. Verticai iir?es are uneven.
Typical history: Adjusting the carrier tension and readjusting VR1
didn't seem to make any difference.
Probable diagnosis: The striker wires in the typehead are out of
vertical alignment.
Solution: Send out the typehead (not the whole printer) to a service
depot for repair.
Approximate cost of repairing it yourself:
$38.00
1 typehead repair
38.00
5 min.
Approximate third-party repair cost:
$141.00
1 rebuilt typehead
76.00
1 hour labor
65.00
Approximate dealer repair cost:
$243.33
1 new printhead assembly 1
73.33
1 hour labor
70.00
ImageWriter I (standard & wide)
367
Symptoms: The printout is too light.
The printout is too light. The printout is too light.
The printout is too light. The printout is too light.
Probable diagnosis: The paper thickness lever is too far back.
Solution: Move the paper thickness lever closer to the platen. If that
doesn't do it, see the next entry.
Paper thickness lever
Approximate cost of repairing it yourself:
1 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
368
The Dead Mac Scrolls
Symptoms: The printout is too light.
The printout is too light. The printout is too light.
The printout is too light. The printout is too light.
Typical history: The paper thickness lever has been checked and
it's correctly positioned.
Probable diagnosis: The ribbon cassette is dry or worn out. (Many
ImageWriters are still equipped with their original ribbons!)
Solution: Replace the ribbon cassette, C. Itoh part CLABK-12802.
Also see the prior entry.
Ribbon cassette —
Approximate cost of repairing it yourself:
$1.69
1 ribbon cassette
1.69
1 min.
Approximate third-party repair cost:
$70.00
1 ribbon cassette
5.00
1 hour labor
65.00
Approximate dealer repair cost:
$82.00
1 ribbon cassette
12.00
1 hour labor
70.00
ImageWriter I (standard & wide)
369
Symptoms: There are intermittent dropouts in the printout. Some
areas are dark, and some areas are light.
There are intermittent dropouts in the printout.
Some areas are dark, and some areas are light.
Probable diagnosis: The ribbon cassette is worn or defective.
Solution: Replace the ribbon cassette.
Approximate cost of repairing it yourself:
$1.69
1 ribbon cassette
1.69
1 min.
Approximate third-party repair cost:
$70.00
1 ribbon cassette
5.00
1 hour labor
65.00
Approximate dealer repair cost:
$82.00
1 ribbon cassette
12.00
1 hour labor
70.00
370
The Dead Mac Scrolls
Symptoms: After a few pages, the pin-feed paper derails and the
printer jams.
Probable diagnosis: The release lever is positioned for friction-feed
paper (not pin-feed).
Solution: Push the release lever toward the pin-feed icon.
Approximate cost of repairing it yourself:
1 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
ImaseWriter / (standard & wide)
371
Symptoms: Printing doesn't stop when the paper runs out. Instead,
it continues right across the platen.
o
o
o
o
o
This printer
o
o
o
does not stop
o
o
o
when the
o
o
o
paper runs out.
o
o
o
o
o
o
It continues
o
o
o
printing, right
o
o
o
o
o
across the platen.
Probable diagnosis: The paper error detector is malfunctioning.
Most likely, a mailing label got stuck under the platen and the
detector arm is jammed by a piece that's still in there.
Solution: Remove the platen. Clear the stuck mailing label.
Check/reposition the paper error detector.
— Paper error detector
remains
Approximate cost of repairing it yourself: 1 hour
Approximate third-party repair cost: $65.00
1 hour labor 65.00
Approximate dealer repair cost:
^ hour labor
70.00
$70.00
372
The Dead Mac Scrolls
Symptoms: It's hard to load paper. Something seems to be blocking
the paper path.
Probable diagnosis: Most likely, a mailing label is or was stuck under
the platen and/or the arm on the paper-error detector is bent.
Solution: Remove the platen. Clear the label jam. Check/reposition
the paper-error detector.
Platen Screw
Approximate cost of repairing it yourself:
7 hour
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
ImageWriter I (standard & wide)
373
Symptoms: Cut-sheet paper slips and lines overprint in friction-feed
mode.
Cut-sheet paper slips and lines overprint in friction feed mode.
Cut-sheet paper slips and lines overprint in fric.tion feed mode.
Cut-sheet paper slips and lines overprint in friction teed mode.
Cut-sheet paper slips and lines overprint in friction feed mode.
Probable diagnosis: The platen is slipping. It's lost its grip!
Solution: Restore the platen grip with liquid tape-recorder rubber
cleaner, Teac RC1 or equivalent, and a clean cotton rag.
Platen
Approximate cost of repairing it yourself:
75 min.
Approximate third-party repair cost:
1 hour labor
65.00
$65.00
Approximate dealer repair cost:
1 hour labor
70.00
$70.00
CHAPTER 8
IMAOEWRITER II
ImageWriter II
375
Symptoms: The Select lamp does not light, the printer does not
respond to Print... commands and the built-in self-test does not
work.
Probable diagnosis: The front cover is incorrectly positioned, or the
safety magnet (underneath the front cover) is missing.
Solution: Check/reposition the front cover. Check the safety
magnet. Verify the operation of the reed switch (normally activated
by the front cover magnet) with a small crafts magnet. If everything
under the front cover checks OK, see the next entry.
Magnet
(underneath)
Approximate cost of repairing it yourself:
49(t
1 crafts magnet
.49
1 0 min.
Approximate third-party repair cost:
$70.00
1 safety magnet
5.00
1 hour labor
65.00
Approximate dealer repair cost:
$115.00
1 new front cover
45.00
1 hour labor
70.00
376
The Dead Mac Scrolls
Symptoms: The Select lamp does not light and the unit does not
respond to Print... commands. The built-in self-test does not work.
Probable diagnosis: The problem is on the ImageWriter II logic
board.
Solution: Check/replace the EC-A056 1C (64-pin MOS CPU), C. Itoh
part EAO-06-64300, at board reference IC9.
Approximate cost of repairing it yourself:
1 EC-A056 1C
21.78
$21.78
1 hour
Approximate third-party repair cost:
1 CPU 1C
42.00
$107.00
1 hour labor
65.00
Approximate dealer repair cost:
1 new main PCB board 181.67
$251.67
1 hour labor
70.00
ImageWriter II
377
Symptoms: The Select lamp does light, and the unit responds to
Print... commands, but there's no line feed. The carrier motor
works, the print head fires and the ribbon cartridge deck goes back
and forth, but every line prints on top of the prior line. The Form
Feed button does work, but the Line Feed button does network.
Except for the line-feed problem, the built-in self-test also works.
Probable diagnosis: The problem is on the ImageWriter II driver
PCB.
Solution: Check/replace the 27B1 (25V, IW) zener diode,
ECG5082A, at board reference ZD3, and check/replace the radial
electrolytic capacitor (2,200 mfd, 35/44V) Digi-Key part P5262, at
board reference Cl 1 . If there's still no line feed, see the next entry.
Approximate cost of repairing it yourself:
$3.69
1 25V, IW zener diode
1.00
1 hour
1 2,200 mfd, 35/44V capacitor
2.69
Approximate third-party repair cost:
$75.00
miscellaneous parts
10.00
1 hour labor
65.00
Approximate dealer repair cost:
$206.67
1 new power supply board 1 36.67
1 hour labor
70.00
378
The Dead Mac Scrolls
Symptoms: The Select lamp does light, and the unit responds to
Print... commands, but there's no line feed. The carrier motor
works, the print head fires and the ribbon cartridge deck goes back
and forth, but every line prints on top of the prior line. The Form
Feed button does work, but the Line Feed button does network.
Except for the line-feed problem, the built-in self-test also works.
Typical history: Zener diode ZD3 and capacitor Cl 1 on the power
supply/driver board have been checked, and they're both OK.
Probable diagnosis: The problem is on the ImageWriter II logic
board.
Solution: Check/replace the SN 7406 1C (hex inverter buffer/driver,
open collector, high voltage) at board reference IC8. Also see the
prior entry.
Approximate cost of repairing it yourself:
39^
1 SN 7406 1C
.39
1 hour
Approximate third-party repair cost:
$70.00
1 SN 7406 1C
5.00
1 hour labor
65.00
Approximate dealer repair cost:
$251.67
1 new main PCB board 181.67
1 hour labor
70.00
ImaseWriter II
379
Symptoms: An ImageWriter II equipped with an AppleTalk Option
Card does not show up in the Chooser or Choose Printer DA.
Probable diagnosis: The problem is on the AppleTalk Option Card
(inside the ImageWriter II).
Solution: Check/replace the SN 74LS245N 1C (20-pin DIP, octal
bus transceiver, noninverting) at board reference U8 (on the
AppleTalk Option Card inside the ImageWriter II).
ImageWriter AppleTalk™ Option
Approximate cost of repairing it yourself:
79 ^
1 74LS245N 1C
.79
1 hour
Approximate third-party repair cost:
1 74LS245N 1C
1 hour labor
5.00
65.00
$70.00
Approximate dealer repair cost:
1 new LocalTalk Card
1 hour labor
141.67
70.00
$211.67
380
The Dead Mac Scrolls
Symptoms: The red error light on the control panel is lit, even though
there's paper in the printer.
Lit (red)
Probable diagnosis: The paper is too far to the right. It's not being
detected by the paper error sensor, which is located on the left side
of the platen.
Solution: Move the paper to the left. Center it on the platen.
Approximate cost of repairing it yourself: / min.
Approximate third-party repair cost: $65.00
1 hour labor 65.00
Approximate dealer repair cost: $70.00
1 hour labor
70.00
ImaseWriter II
381
Symptoms: The ribbon carrier makes a scraping noise as it moves
from side to side. Printed pages contain regularly spaced horizontal
scratch marks (even in the white spaces).
abcdetghijkimnopqrstuvwxyzabcdefghijkimnopqrstuvwxyz
abcdefghijkimnopqrstuvwxyz
Probable diagnosis: The edge of the plastic card holder (or paper
guide) is melted. Beads of melted plastic are scratching the paper.
Solution: Replace the card holder (C. Itoh CQAAK-1 0501).
\
Card holder
Approximate cost of repairing it yourself:
1 card holder
2.00
$ 2.00
5 min.
Approximate third-party repair cost:
1 card holder
1 hour labor
5.00
65.00
$70.00
Approximate dealer repair cost:
1 new paper guide
1 hour labor
10.00
70.00
$80.00
382
The Dead Mac Scrolls
Symptoms: When a four-color ribbon is installed, cyan overlaps
black at the top of every text character.
TH I S I S A TEST. £1.
Typical history: Monochrome (black) ribbons seem to work OK.
Probable diagnosis: The ribbon cam is out of adjustment.
Solution: Turn the adjustment ring counterclockwise until the
colors register correctly.
Adjustment ring
Approximate cost of repairing it yourself:
5 min.
Approximate third-party repair cost:
$65.00
1 hour labor
65.00
Approximate dealer repair cost:
$90.00
1 new color ribbon
20.00
1 hour labor
70.00
ImaseWriter II
383
Symptoms: When a four-color ribbon is installed, yellow overlaps
black at the bottom of every text character.
THIS IS A TEST. S
Typical history: Monochrome (black) ribbons seem to work OK.
Probable diagnosis: The ribbon cam is out of adjustment.
Solution: Turn the adjustment ring clockwise until the colors
register correctly.
Adjustment ring
Approximate cost of repairing it yourself:
5 min.
Approximate third-party repair cost:
$65.00
1 hour labor
65.00
Approximate dealer repair cost:
$90.00
1 new color ribbon
20.00
1 hour labor
70.00
384
The Dead Mac Scrolls
Symptoms: The on/off button on a late-model (unitized) ImageWriter
II (marked Family number: COOlO; Marketing number: C0090LIJA) is
intermittent. Sometimes it works, sometimes it doesn't.
Typical history: The problem occurred after completion of service
work (right after you put everything back together).
Probable diagnosis: The extension cable connecting the on/off button
on the control panel to the power switch (located on the power
supply/driver PCB) is pinched under the printer frame.
Solution: Reposition the extension cable as shown.
Incorrect
Correct
Approximate cost of repairing it yourself:
1 hour
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
ImageWriter II
385
Symptoms: Whenever you select high-speed Dra/t quality, the text
is printed in an ugly, 15-cpi (characters per inch) type with
unacceptably large spacing between words. The same thing
happens when NLQ is selected (printout is ugly), except the type is
darker.
Del tusD-fo
Fourscore and seren years cjod cut- rairet^s broujht
rw’th »i this contlrentd nau ration, ojn-filred in
I Iderty crid dedlmled to tfe preposition that all
riBi ctre created eqjal .
Probable diagnosis: The problem is in the ImageWriter resource,
not in the ImageWriter II.
Solution: Replace the ImageWriter resource with the BetterWriter
II driver developed by GDT Softworks. Once that's done. Draft and
Best quality will both print perfectly!
Better Writers
Quality: O Best OFab O Fast
□ Darker □ Color
BetterWriter II v1 .0
® Draft
h/Louj
Mid
High
I Approximate cost of repairing it yourself:
$39.95
1 BetterWriters package (street price)
39.95
15 min.
Approximate third-party repair cost:
$134.00
1 BetterWriters package
69.00
1 hour labor
65.00
Approximate dealer repair cost:
$599.00
1 new StyleWriter 599.00
386
The Dead Mac Scrolls
Symptoms; The ribbon cartridge deck jams while going to the left.
The printout resembles a staircase, ascending to the right.
The printout
resembles a
staircase, ascending
to the right. The
printout resembles
a staircase,
ascending to the right.
The printout resembles a
staircase, ascending to
the right. The printout
resembles a staircase,
ascending to the right.
The printout resembles a
staircase, ascending to
Probable diagnosis: There's too much friction on the carrier shaft
and the carriage guide rail.
Solution: Thoroughly clean and lubricate the carrier shaft and the
carriage guide rail.
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
ImaseWriter II
387
Symptoms: There are regularly s(3aced missing dots in the printout.
Thorp arp rpaiilarlv Qn;irprl miccino Hr^tc in thp nrintniit
.. — _ _ • -o •/ “I -o r
Th oro ciro rom 1 1 rl\/ cncj r'orl micci no rln^fc in tho nri ntnu it
• ill CIIV^ ^lill «
Probable diagnosis: The contacts on the print head PCB are dirty.
Solution: Clean the contacts with a pencil eraser. If that doesn't do
it, see the next entry.
Print head PCB
I nn 'Ml
t()Pi') ;2
Approximate cost of repairing it yourself:
Approximate third-party repair cost:
1 hour labor
Approximate dealer repair cost:
1 new print head DDH-90
1 hour labor
5 min.
65.00
$65.00
155.00
70.00
$225.00
388
The Dead Mac Scrolls
Symptoms: There are regularly spaced missing dots in the printout.
T.hore ar6 r6^u!a.rh/ soaced missing' dots in tho orintout.
Typical history: Cleaning the print head PCB made no difference.
Probable diagnosis: One of the striker wires in the print head is
rusty. The wire is hanging on the ribbon guide (instead of slipping
through and onto the paper).
Solution: Spray the ribbon guide with a drop or two of WD-40. Let
it soak in for several hours (preferably overnight) before reinstalling
the print head. If that still doesn't do it, see the next entry.
Approximate cost of repairing it yourself:
5 min.
Approximate third-party repair cost:
1 hour labor
$65.00
65.00
Approximate dealer repair cost:
1 new print head DDH-90
1 hour labor
$225.00
155.00
70.00
ImaseWriter II
389
Symptoms: There are regularly spaced missing dots in the printout.
Typical history: Cleaning the contacts on the print head made no
difference. Lubricating the ribbon guide didn't help.
Thprp arp rpoiilarlv cnarprl miccino Hntc in thp nrintmit
^ • ''O •/ ''I "O ••• |-
Thoro ciro rooi 1 1 rl\/ cr^^/^orl mlccino riotc in thto nrintrMl^
Probable diagnosis: One of the striker wires in the print head is bent
or broken, and/or one of the return springs is weak.
Solution: Send out the print head (not the whole printer) to a
service depot for repair. Also see the prior entry.
Broken
Approximate cost of repairing it yourself:
$46.00
1 print head repair
46.00
5 min.
Approximate third-party repair cost:
$157.00
1 rebuilt print head
92.00
1 hour labor
65.00
Approximate dealer repair cost:
$225.00
1 new print head DDH-90 155.00
1 hour labor
70.00
390
The Dead Mac Scrolls
Symptoms: Best quality printing is wavy. Vertical lines are uneven.
Best qustity prmting is v^svy. Vevtiesi (iries sre uneven.
Best quaiify printing is Vert/saJ /i/7es are uneven.
Probable diagnosis: The character deviation is out of adjustment.
Solution: Adjust DIP switches SW2-5 and SW2-6 (located under
the front cover) for best linearity. Also see the next entry.
Approximate cost of repairing it yourself:
10 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
ImageWriter II
391
Symptoms: Best quality printing is wavy. Vertical lines are uneven.
Best prmtmg is v^svy. ^/erticsi (iries -aire urieven.
Best qualify printing is wa\y. Vertical lines are uneven.
Typical history: Adjusting DIP switches SW2-5 and SW2-6 didn't
completely eliminate the problem.
Probable diagnosis: There's not enough tension on the carrier belt.
Solution: Adjust the carrier-belt tension lever (located under the
front cover) for best linearity. If that doesn't do it, see the next entry.
Adjustment
lever
Approximate cost of repairing it yourself:
10 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
392
The Dead Mac Scrolls
Symptoms: Best quality printing is wavy. Vertical lines are uneven.
Best prmtir\g is Vertiosi (ines sre uneven.
Best printing is wav^y'. Verticai Jir?es are uneven.
Typical history: Adjusting DIP switches SW2-5 and SW2-6 and the
carrier-belt tension lever didn't seem to make any difference.
Probable diagnosis: The striker wires in the print head are out of
vertical alignment.
Solution: Send out the print head (not the whole printer) to a
service depot for repair. If that's not it, see the next entry.
Striker wires
Approximate cost of repairing it yourself:
$46.00
1 print head repair
46.00
5 min.
Approximate third-party repair cost:
$157.00
1 rebuilt print head
92.00
1 hour labor
65.00
Approximate dealer repair cost:
$225.00
1 new print head DDH-90 155.00
1 hour labor
70.00
ImaseWriter II
393
Symptoms: Best quality printing is wavy, blurred and/or almost
double-struck. Vertical lines are uneven.
Best qvjss(ity pr^1^^ting is v^svy. V'erticsi imes sire uneven.
Best qualify printing is wa\y. Vertical lines are uneven.
Typical history: Adjusting DIP switches SW2-5 and SW2-6 and the
carrier belt tension lever didn't seem to make any difference. The
striker wires in the print head are in perfect alignment.
Probable diagnosis: The problem is on the ImageWriter II driver
PCB.
Solution: Check/replace the EC-A051 1C (18-pin, carrier motor
driver), C. Itoh part EAT-00-09900, at board reference HICl.
Approximate cost of repairing it yourself:
$21.78
1 EC-A051 1C
21.78
1 hour
Approximate third-party repair cost:
$109.00
1 carrier motor driver 1C
44.00
1 hour labor
65.00
Approximate dealer repair cost:
$206.67
1 new power supply board
136.67
1 hour labor
70.00
394
The Dead Mac Scrolls
Symptoms: The printout is too light.
The printout is too light. The printout is too light.
The printout is too light. The printout is too light.
Probable diagnosis: The paper thickness lever is too far back.
Solution: Move the paper thickness lever (located under the front
cover) closer to the platen. If that doesn't do it, see the next entry.
Paper thickness
lever
Approximate cost of repairing it yourself:
1 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
ImageWriter II
395
Symptoms: The printout is too light.
I he |:)rinloiil is loo lighl. 1 lie pi inlout is too light.
The prinloul is loo lighl. The printout is loo light.
Typical history: The paper thickness lever has been checked, and it's
correctly positioned.
Probable diagnosis: The ribbon cartridge is dry or worn out.
Solution: Replace the ribbon cartridge, C. Itoh part CLABK-128S2.
Also see the prior entry.
Approximate cost of repairing it yourself:
$1.69
1 ribbon cartridge
1.69
1 min.
Approximate third-party repair cost:
$70.00
1 ribbon cartridge
5.00
1 hour labor
65.00
Approximate dealer repair cost:
$82.00
1 ribbon cartridge
12.00
1 hour labor
70.00
396
The Dead Mac Scrolls
Symptoms: There are intermittent dropouts in the printout. Some
areas are dark, and some areas are light.
There are intermittent dropouts in the printout.
Some areas are dark, and some areas are light.
Probable diagnosis: The ribbon cartridge is worn or defective.
Solution: Replace the ribbon cartridge, C. Itoh part CLABK-128S2.
Approximate cost of repairing it yourself:
$1.69
1 ribbon cartridge
1.69
1 min.
Approximate third-party repair cost:
$70.00
1 ribbon cartridge
5.00
1 hour labor
65.00
Approximate dealer repair cost:
$82.00
1 ribbon cartridge
12.00
1 hour labor
70.00
ImaseWriter II
397
Symptoms: The printout facies from dark to light (or from light to
dark). One side of the printout is darker or lighter than the other.
The printout fades from dark-lo-light (or light to d i!! >
One side of the printout isdarkc'i or lighter 'rK,n th* ■ --hi'i.
Probable diagnosis: The carrier shaft isn't square to the platen.'The
side farthest away is where the printing is the lightest.
Solution: Square the carrier shaft to the platen by installing a 0.002-
inch, 0.004-inch or 0.008-inch adjust plate (C. Itoh part numbers
CBA20-02901, CBA20-02902 and CBA20-02903),on the carrier
shaft bush located on the side where printing is the lightest, or by
removing a 0.002-inch, 0.004-inch or 0.008-inch adjust plate from
the carrier shaft bush located on the side where printing is the
darkest.
Approximate cost of repairing it yourself:
$3.00
1 set of adjust plates
3.00
1 hour
Approximate third-party repair cost:
$71.00
1 set of adjust plates
6.00
1 hour labor
65.00
Approximate dealer repair cost:
$82.00
1 shim kit (part 955-0005)
12.00
1 hour labor
70.00
398
The Dead Mac Scrolls
Symptoms: After a few pages, the pin-feed paper derails and the
printer jams.
Probable diagnosis: The paper feed selector (located on the right
leg) is positioned for friction-feed paper (not pin-feed).
Solution: Push the paper feed selector toward the pin-feed icon.
Pin feed icon
Paper feed selector
Friction feed icon
Approximate cost of repairing it yourself:
1 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
ImaeeWriter II
399
Symptoms: Printing doesn't stop when the paper runs out. Instead,
it continues right across the platen.
o
o
o
o
o
This printer
o
o
o
does not stop
o
o
o
when the
o
o
o
paper runs out.
o
o
o
o
o
o
It continues
o
o
o
printing, right
o
o
o
o
o
Probable diagnosis: The paper empty sensor is malfunctioning. Most
likely, a mailing label is stuck under the platen.
Solution: Remove the platen. Clear the stuck mailing label.
Approximate cost of repairing it yourself:
7 hour
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
400
The Dead Mac Scrolls
Symptoms: It's hard to load paper. Something seems to be blocking
the paper path.
Probable diagnosis: A mailing label is or was stuck under the platen,
and/or the arms on the mechanical paper empty sensor are bent.
Solution: Remove the platen. Clear the stuck mailing label, if any,
and straighten the arms on the paper empty sensor, if necessary.
Approximate cost of repairing it yourself:
1 hour
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
ImaseWriter II
401
Symptoms: Cut-sheet paper slips and lines overprint in friction-feed
mode.
Cut-sheet paper slips and lines overprint in friction feed mode.
Cut-sheet paper slips and lines overprint in frlc.tio.n feed mode,
Cut-sheei paper slips and lines overprint in friction feed mode.
Cut-sheet paper slips and lines overprint in friction feed mode.
Probable diagnosis: The platen is slipping. It's lost its grip!
Solution: Restore the platen grip with liquid tape-recorder rubber
cleaner, Teac RC1 or equivalent, and a clean cotton rag.
y
Approximate cost of repairing it yourself:
15 min.
Approximate third-party repair cost:
1 hour labor
65.00
$65.00
Approximate dealer repair cost:
1 hour labor
70.00
$70.00
CHAPTER 9
LASERWRITER
AND
LASERWRITER PLUS
LaserWriter and LaserWriter Plus
403
Symptoms: On a LaserWriter, there's no test page. The green Test
LED on the interface panel comes on and remains on (does not shut
off).
Test O
o
AppleTalk
Special
9600
1200
(t
ooooooooooooo
ooooooooooo
5 ‘
Probable diagnosis: The problem is on the LaserWriter logic board.
Solution: Check/replace the ROMs marked HO and LO.
H6 IHi'iHI L6
H5 IWilHi, L5
H4 IMilHil L4
H3 IMiMMI L3
H2
HI
1 L2
LI
HO liiillliii LO I
ABC GHI
^ ^
K M N
Approximate cost of repairing it yourself:
$50.00
1 ROM chip
50.00
2 hours
Approximate third-party repair cost:
$425.00
1 ROM chip
100.00
5 hours labor
325.00
Approximate dealer repair cost:
$1,043.33
1 new I/O board with ROMs
693.33
5 hours labor
350.00
404
The Dead Mac Scrolls
Symptoms: On a LaserWriter, there's no test page. The green Test
LED on the interface panel never comes on (doesn't even blink
once).
0 (^) 0
Test Q
AppleTalk
Special
9600
1200
0 /^ooooooooooo(T\^
^ 00000000000
Probable diagnosis: The problem is on the LaserWriter logic board.
Solution: Check/replace the ROMs marked HO, LO, H7 and L7.
H7
iililllllllli
L7
•c
H6
MW! Mi
L6
1
H5
nmImm
L5
H4
MMIWM
L4
c
H3
mwimm
L3
CO
N
H2
MWIMM
L2
•»
HI
MMIIilN
LI
PI
HO
IMIllliil
LO n
HI LO
A B
C D
E
G
H
K M N
Approximate cost of repairing it yourself:
$50.00
1 ROM chip
50.00
2 hours
Approximate third-party repair cost:
$425.00
1 ROM chip
100.00
5 hours labor
325.00
Approximate dealer repair cost:
$1,043.33
1 new I/O board with ROMs
693.33
5 hours labor
350.00
LaserWriter and LaserWriter Plus
405
Symptoms: On a LaserWriter, there's no test page. The green Test
LED on the interface panel is blinking.
0 (^) 0
Test .'o'-
-od
0000000000000
00000000000
5
AppleTalk
Special
9600
1200
O
Probable diagnosis: The problem is on the LaserWriter logic board.
Solution: Check/replace the ROMs marked H1-H7 and L1-L7.
c
C"
IZZI
(C
H7 liMillllllil L7
vO
H6 IMHIMMI L6
T
H3 IHilliil L5
-
H4 IHIiMlj L4
0
H3 !MilHil L3
S
H2 liiljlMil L2
H1 IMIllil'. L1
-
HO jumiiiiii] LO 1
HI LO
VI
A
BCD E CHI
K M
N
Approximate cost of repairing it yourself:
$50.00
1 ROM chip
50.00
2 hours
Approximate third-party repair cost:
$425.00
1 ROM chip
100.00
5 hours labor
325.00
Approximate dealer repair cost:
$1,043.33
1 new I/O board with ROMs
693.33
5 hours labor
350.00
406
The Dead Mac Scrolls
Symptoms: On a LaserWriter Plus, there's no test page. The green
Test LED on the interface panel comes on and remains on (does not
shut off). Test Character Generator version 1 .09 (on The Larry Pina
Utilities Disk) or other diagnostics software reports error code
nnnnnnOI (where the value of nnnnnn is insignificant).
Probable diagnosis: The problem is on the LaserWriter Plus logic
board.
Solution: Check/replace the version-2 ROMs marked HO and LO.
*APPLE*00010001*APPLE*
[ZZl
[-14 Umilllllllllll L4
HI Hili LI
HO IHIilil LO [
1=1
G H ) K M N
Approximate cost of repairing it yourself:
1 ROM chip
50.00
$50.00
2 hours
Approximate third-party repair cost:
1 ROM chip
5 hours labor
100.00
325.00
$425.00
Approximate dealer repair cost:
1 new I/O board with ROMs
5 hours labor
693.33
350.00
$1,043.33
LaserWriter and LaserWriter Plus
407
Symptoms: On a LaserWriter Plus, there's no test page. The green
Test LED on the interface panel is blinking. Test Character
Generator version 1 .09 (on The Larry Pina Utilities Disk) or other
diagnostics software reports error code nnnnnn02 (where the value
of nnnnnn is insignificant).
*APPLE*00010002*APPLE*
Probable diagnosis: The problem is on the LaserWriter Plus logic
board.
Solution: Check/replace the version-2 ROMs marked HI and LI.
H7 IMllMH 17
H6 IHIIHil L6
H5 iiil|iii L5
H4 IMiilHil L4
H3 iWilMMi L3
^ H2 IHi'llliil L2
- HO liMliiii Lo I 1 r I
HI LO ^ ^
A B C D E G H ) K M N
1 Approximate cost of repairing it yourself:
$50.00
1 ROM chip
50.00
2 hours
Approximate third-party repair cost:
$425.00
1 ROM chip
100.00
5 hours labor
325.00
Approximate dealer repair cost:
$1,043.33
1 new I/O board with ROMs
693.33
5 hours labor
350.00
408
The Dead Mac Scrolls
Symptoms: On a LaserWriter Plus, there's no test page. The green
Test LED on the interface panel is blinking. Test Character
Generator version 1 .09 (on The Larry Pina Utilities Disk) or other
diagnostics software reports error code nnnnnn04 (where the value
of nnnnnn is insignificant).
*APPLE*00010004*APPLE*
Probable diagnosis: The problem is on the LaserWriter Plus logic
board.
Solution: Check/replace the version-2 ROMs marked H2 and L2.
nzi
ec
H7 llili;lllllllil L7
H6 MMIMHI L6
H5 HHIlii' L5
H4 IHliHii L4
o
9
H3 IMMiMMI L3
oo
fN
H2 lillllllllil L2
t
H1 MilB LI
f'i
HO limilllllil LO 1 —
HI LO
si
A
BCD E G H
J K M
N
Approximate cost of repairing it yourself:
$50.00
1 ROM chip
50.00
2 hours
Approximate tbird-party repair cost:
$425.00
1 ROM chip
100.00
5 hours labor
325.00
Approximate dealer repair cost:
$1,043.33
1 new I/O board with ROMs
693.33
5 hours labor
1
350.00
LaserWriter and LaserWriter Plus
409
Symptoms: On a LaserWriter Plus, there's no test page. The green
Test LED on the interface panel is blinking. Test Character
Generator version 1 .09 (on The Larry Pina Utilities Disk) or other
diagnostics software reports error code nnnnnnOS (where the value
of nnnnnn is insignificant).
*APPLE*00 01 0008* APPLE*
Probable diagnosis: The problem is on the LaserWriter Plus logic
board.
Solution: Check/replace the version-2 ROMs marked H3 and L3.
Hb IMillill Lb
H5 IMillillil L5
H4 liHllijil L4
^ H2 IBBI L2
H1 IHilHilLi
- HO liiilllllllil LO I 1 I I
HI LO ^ ^
A B C D E G H ) K M N
Approximate cost of repairing it yourself:
$50.00
1 ROM chip
50.00
2 hours
Approximate third-party repair cost:
$425.00
1 ROM chip
100.00
5 hours labor
325.00
Approximate dealer repair cost:
$1,043.33
1 new I/O board with ROMs
693.33
5 hours labor
350.00
410
I
The Dead Mac Scrolls
Symptoms: On a LaserWriter Plus, there's no test page. The green
Test LED on the interface panel is blinking. Test Character
Generator version 1 .09 (on The Larry Pina Utilities Disk) or other
diagnostics software reports error code nnnnnnlO (where the value
of nnnnnn is insignificant).
*APPLE*00010010*APPLE*
Probable diagnosis: The problem is on the LaserWriter Plus logic
board.
Solution: Check/replace the version-2 ROMs marked H4 and L4.
y
IZZl
CC
H7 liillilil L7
v£
H6 iililllllli L6
-
H4 Mill Mill L4
i
H3 iililllllli L3
<c
H2 liililli L2
T
HI Hiliii LI
-
HO iiiiM LO 1
HI LO
=3
A
BCD E G H 1
K M
N
Approximate cost of repairing it yourself:
$50.00
1 ROM chip
50.00
2 hours
Approximate third-party repair cost:
$425.00
1 ROM chip
100.00
5 hours labor
325.00
Approximate dealer repair cost:
$1,043.33
1 new I/O board with ROMs
693.33
5 hours labor
350.00
LaserWriter and LaserWriter Plus
411
Symptoms: On a LaserWriter Plus, there's no test page. The green
Test LED on the interface panel is blinking. Test Character
Generator version 1 .09 (on The Larry Pina Utilities Disk) or other
diagnostics software reports error code nnnnnn20 (where the value
of nnnnnn is insignificant).
Probable diagnosis: The problem is on the LaserWriter Plus logic
board.
Solution: Check/replace the version-2 ROMs marked H5 and L5.
*APPLE*00010020*APPLE*
H7 I L7
H6 I L6
H5 IMilHi L5
[-14 IHmillllll L4
H3 imiMM L3
H2 IMillMi L2
H1 IHiiii L I
HO IWiiMi LO [
i=i
CHI K M N
Approximate cost of repairing it yourself:
1 ROM chip
50.00
$50.00
2 hours
Approximate third-party repair cost:
1 ROM chip
5 hours labor
100.00
325.00
$425.00
Approximate dealer repair cost:
1 new I/O board with ROMs
5 hours labor
$1,043.33
693.33
350.00
412
The Dead Mac Scrolls
Symptoms: On a LaserWriter Plus, there's no test page. The green
Test LED on the interface panel is blinking. Test Character
Generator version 1 .09 (on The Larry Pina Utilities Disk) or other
diagnostics software reports error code nnnnnn40 (where the value
of nnnnnn is insignificant).
*APPLE*00010040*APPLE*
Probable diagnosis: The problem is on the LaserWriter Plus logic
board.
Solution: Check/replace the version-2 ROMs marked H6 and L6.
O'
IZZl
H7 IHi'Hil L7
•e
H6 IMMlMW L6
n
H5 liiiiii L5
-
IMMIMMUi
o
a
H3 IMmiHI L3
oo
r-.
M2 liii;|||||ill L2
HI llilllllli' LI
-
HO limiHi LO 1
HI 1 0
A
BCD E ■ G H I
K M
N
Approximate cost of repairing it yourself:
$50.00
1 ROM chip
50.00
2 hours
Approximate third-party repair cost:
$425.00
1 ROM chip
100.00
5 hours labor
325.00
Approximate dealer repair cost:
$1,043.33
1 new I/O board with ROMs
693.33
5 hours labor
350.00
LaserWriter and LaserWriter Plus
413
Symptoms: On a LaserWriter Plus, there's no test page. The green
Test LED on the interface panel is blinking. Test Character
Generator version 1 .09 (on The Larry Pina Utilities Disk) or other
diagnostics software reports error code nnnnnnSO (where the value
of nnnnnn is insignificant).
*APPLE*00010080*APPLE*
Probable diagnosis: The problem is on the LaserWriter Plus logic
board.
Solution: Check/replace the version-3 ROMs marked H7 and L7.
p
UZD
X
H7
Hi, Hi
L7
H6
MMIHI
L6
-
H5
hmihm
L5
-
H4
Hi Hi
L4
7 -
H3
HilMM
L3
GO
H2
HiiiiH
L2
n
HI
MM MM
LI
-
HO
HI^ LO
LO 1
-J It—
A
BCD
G H )
K M
N
Approximate cost of repairing it yourself:
$50.00
1 ROM chip
50.00
2 hours
Approximate third-party repair cost:
$425.00
1 ROM chip
100.00
5 hours labor
325.00
Approximate dealer repair cost:
$1,043.33
1 new I/O board with ROMs
693.33
5 hours labor
350.00
414
The Dead Mac Scrolls
Symptoms: On a LaserWriter Plus, there's no test page. The green
Test LED on the interface panel comes on and remains on (does not
shut off). Test Character Generator version 1 .09 (on The Larry Pina
Utilities Disk) or other LaserWriter Plus diagnostics software reports
error code nnnnnn03 (where the value of nnnnnn is insignificant).
*APPLE*00010003*APPLE*
Probable diagnosis: The problem is on the LaserWriter Plus logic
board.
Solution: Check/replace the version-3 ROMs marked HO and LO.
Approximate cost of repairing it yourself:
$100.00
1 ROM chip
100.00
2 hours
Approximate third-party repair cost:
$525.00
1 ROM chip
200.00
5 hours labor
325.00
Approximate dealer repair cost:
$1,043.33
1 new I/O board with ROMs
693.33
5 hours labor
350.00
LaserWriter and LaserWriter Plus
415
Symptoms: On a LaserWriter Plus, there's no test page. The green
Test LED on the interface panel is blinking. Test Character
Generator version 1 .09 (on The Larry Pina Utilities Disk) or other
diagnostics software reports error code nnnnnnOC (where the value
of nnnnnn is insignificant).
*APPLE*0001000C*APPLE*
Probable diagnosis: The problem is on the LaserWriter Plus logic
board.
Solution: Check/replace the version-3 ROMs marked HI and LI.
S [ZZI
60
-
1M
; H3
iMilllii L3
" H2
IMMIHM L2
HI
ilililillllllli L1
" HO
IliillllliLO I
CJ L J
HI LO
^ N
A B C D
E G H
1 K M N
Approximate cost of repairing it yourself:
$100.00
1 ROM chip
100.00
2 hours
Approximate third-party repair cost:
$525.00
1 ROM chip
200.00
5 hours labor
325.00
Approximate dealer repair cost:
$1,043.33
1 new I/O board with ROMs
693.33
5 hours labor
350.00
416
The Dead Mac Scrolls
Symptoms: On a LaserWriter Plus, there's no test page. The green
Test LED on the interface panel is blinking. Test Character
Generator version 1 .09 (on The Larry Pina Utilities Disk) or other
diagnostics software reports error code nnnnnnTO (where the value
of nnnnnn is insignificant).
*APPLE*00010030*APPLE*
Probable diagnosis: The problem is on the LaserWriter Plus logic
board.
Solution: Check/replace the version-3 ROMs marked H2 and L2.
Approximate cost of repairing it yourself:
$100.00
1 ROM chip
100.00
2 hours
Approximate third-party repair cost:
$525.00
1 ROM chip
200.00
5 hours labor
325.00
Approximate dealer repair cost:
$1,043.33
1 new I/O board with ROMs
693.33
5 hours labor
350.00
LaserWriter and LaserWriter Plus
417
Symptoms: On a LaserWriter Plus, there's no test page. The green
Test LED on the interface panel is blinking. Test Character
Generator version 1 .09 (on The Larry Pina Utilities Disk) or other
diagnostics software reports error code nnnnnnCO (where the value
of nnnnnn is insignificant).
*APPLE*000100C0*APPLE*
Probable diagnosis: The problem is on the LaserWriter Plus logic
board.
Solution: Check/replace the version-3 ROMs marked H3 and L3.
Approximate cost of repairing it yourself:
$100.00
1 ROM chip
100.00
2 hours
Approximate third-party repair cost:
$525.00
1 ROM chip
200.00
5 hours labor
325.00
Approximate dealer repair cost:
$1,043.33
1 new I/O board with ROMs
693.33
5 hours labor
350.00
418
The Dead Mac Scrolls
Symptoms: On powerup, the ready/wait light (located on the status
panel) blinks for a minute or so, then lights continuously as usual, but
there's no test page. The printer is recognized in the Chooser, but
there's no response to the print command.
— II II
U Q
ready/wait paper out paper jam
Probable diagnosis: The problem is in the fuser assembly and/or on
the upper AC driver PCB (both located in the printer's lower unit).
Solution: Check/replace the quartz-heater bulb (HP part RH7-
4007-000CN) in the fuser assembly and check/replace current
limiting resistor J107 (47Q, V4-watt, 5%) on the upper AC driver
PCB. If that doesn't do it, see the next entry.
— j r
A
— liM
jl07
^ — high-limit switch
quartz bulb
AC driver PCB Fuser assembly
Approximate cost of repairing it yourself:
$29.59
1 quartz-heater bulb
29.50
1 hour
1 470, 14-watt resistor
.09
Approximate third-party repair cost:
$385.00
1 fuser bulb
60.00
5 hours labor
325.00
Approximate dealer repair cost
$448.00
1 fuser assembly (699-0306)
378.00
1 hour labor
70.00
LaserWriter and LaserWriter Plus
419
Symptoms: On powerup, the ready/wait WgUt (located on the status
panel) blinks for a minute or so, then lights continuously as usual, but
there's no test page. The printer is recognized in the Chooser, but
there's no response to the print command.
— I I II
U Q 8^
reaciy/vvail paper out paper jam
Typical history: Continuity testing has verified that it's not the fuser
bulb or the 47Q resistor on the AC driver PCB.
Probable diagnosis: The problem is in the fuser assembly.
Solution: Check/replace the high-limit switch (HP part FH7-7041-
OOOCN ). If that's not it, see the next entry.
AC driver PCB Fuser assembly
Approximate cost of repairing it yourself:
$25.00
1 high-limit switch
25.00
1 hour
Approximate third-party repair cost:
$375.00
1 fuser thermoprotector
50.00
5 hours labor ‘
325.00
Approximate dealer repair cost
$448.00
1 fuser assembly (699-0306)
378.00
1 hour labor
70.00
420
The Dead Mac Scrolls
Symptoms: On powerup, the ready/wait light (located on the status
panel) blinks for a minute or so, then lights continuously as usual, but
there's no test page. The printer is recognized in the Chooser, but
there's no response to the print command.
Typical history: Continuity testing has verified that it's not the
quartz heater bulb, the high-limit switch or the 47Q. resistor.
Probable diagnosis: The problem is still in the fuser assembly.
Solution: Check/replace the fuser thermostat (HP part RH7-7002-
OOOCN). Also see the prior entry.
U Q 8^
reacly/wail paper out paper jam
1212
^ thermostat
H quartz bull)
DC controller PCB
Fuser assembly
Approximate cost of repairing it yourself:
1 thermostat assembly
25.00
$25.00
1 hour
Approximate third-party repair cost:
1 fuser thermistor
5 hours labor
$375.00
50.00
325.00
Approximate dealer repair cost
1 fuser assembly (699-0306)
1 hour labor
$448.00
378.00
70.00
LaserWriter and LaserWriter Plus
421
Symptoms: There are white water spots (dropouts) on the printout.
Probable diagnosis: The toner is unevenly distributed.
Solution: Check/replace the toner cartridge (HP part 92285A). Also
see the next entry.
— D es-
/
Toner
cartridge
Approximate cost of repairing it yourself:
$89.95
1 toner cartridge
89.95
1 min.
Approximate third-party repair cost:
$164.95
1 toner cartridge
99.95
1 hour labor
65.00
Approximate dealer repair cost:
$195.00
1 toner cartridge 1
25.00
1 hour labor
70.00
422
The Dead Mac Scrolls
Symptoms: There are white water spots (dropouts) on the printout.
Typical history: The problem occurred right after you blew out the
dust buildup with compressed air.
Probable diagnosis: The problem is in the erase lamp assembly
(located in the upper unit). Some of the dust blew upward and
settled on the red lens.
Solution: Thoroughly clean the red erase-lamp lens (inside and out).
y V
Erase lamp
assembly -
30 min.
$325.00
$350.00
Approximate cost of repairing it yourself:
Approximate third-party repair cost:
5 hours labor 325.00
Approximate dealer repair cost:
5 hours labor 350.00
LaserWriter and LaserWriter Plus
423
Symptoms: The printout is generally too light.
Probable diagnosis: The print density setting is too low.
Solution: Turn the unmarked print-density dial fully
counterclockwise. If that doesn't do it, see the next entry.
Print-density dial
\
•©-
o
1
— e=5
Approximate cost of repairing it yourself:
L min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
424
The Dead Mac Scrolls
Symptoms: The printout is generally too light.
Probable diagnosis: The toner cartridge is empty.
Solution: Check/replace the toner cartridge (HP part 92285A). If
that still doesn't do it, see the next entry.
w
/
L
=1 B—
Toner
cartridge
Approximate cost of repairing it yourself:
$89.95
1 toner cartridge
89.95
1 min.
Approximate third-party repair cost:
$164.95
1 toner cartridge
99.95
1 hour labor
65.00
Approximate dealer repair cost:
$195.00
1 toner cartridge 1
25.00
1 hour labor
70.00
LaserWriter and LaserWriter Plus
425
Symptoms: Solid blacks appear to have been blotted. The edges
are rough, not crisp.
LaserWriter
Probable diagnosis: The problem is in the transfer corona assembly
(located in the low'er unit).
Solution: Clean/tighten the transfer corona assembly. If that doesn't
do it, see the next entry.
Transfer
corona
assembly
Lower
unit
Approximate cost of repairing it yourself: 10 min.
Approximate third-party repair cost: $325.00
5 hours labor 325.00
Approximate dealer repair cost:
5 hours labor
350.00
$350.00
426
The Dead Mac Scrolls
Symptoms: Solid blacks appear to have been blotted. The edges
are rough, not crisp.
LaserWriter
Probable diagnosis: The problem is a cracked solder joint in the
high-voltage power supply.
Solution: Check/resolder the electrolytic capacitor at board
reference C28. Also see the prior entry.
Approximate cost of repairing it yourself:
1 hour
Approximate third-party repair cost:
$325.00
5 i( hours labor 325.00
‘J
Approximate dealer repair cost:
$548.33
1 new power supply, HV 1 98.33
5 hours labor 350.00
LaserWriter and LaserWriter Plus
427
Symptoms: The printout is generally too dark.
Probable diagnosis: The print density setting is too high.
Solution: Turn the unmarked print-density dial fully clockwise.
Print-density dial
\
Hill .a
D
O
U3 1 — 1 *
Approximate cost of repairing it yourself:
1 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
428
The Dead Mac Scrolls
Symptoms: Every printout, including the test page, is solid white.
Typical history: The problem occurred right after you installed a
new toner cartridge.
Probable diagnosis: The sealing tape is still on the toner cartridge.
Solution: Check/remove the factory sealing tape.
— j— Toner
/ cartridge
Approximate cost of repairing it yourself:
1 min.
Approximate third-party repair cost:
1 hour labor
65.00
$65.00
Approximate dealer repair cost:
1 hour labor
70.00
$70.00
LaserWriter and LaserWriter Plus
429
Symptoms: Every printout, including the test page, is solid black.
Probable diagnosis: The problem is in the toner cartridge.
Solution: Check/replace the toner cartridge (HP part 92285A).
— 1 1 ea—
Toner
cartridge
Approximate cost of repairing it yourself:
$89.95
1 toner cartridge
89.95
1 min.
Approximate third-party repair cost:
$164.95
1 toner cartridge
99.95
1 hour labor
65.00
Approximate dealer repair cost:
$195.00
1 toner cartridge 1
25.00
1 hour labor
70.00
430
The Dead Mac Scrolls
Symptoms: Every printout, including the test page, is solid gray.
Probable diagnosis: The problem is in the toner cartridge.
Solution: Check/replace the toner cartridge (HP part 92285A).
Toner
cartridge
Approximate cost of repairing it yourself:
$89.95
1 toner cartridge
89.95
1 min.
Approximate third-party repair cost:
$164.95
1 toner cartridge
99.95
1 hour labor
65.00
Approximate dealer repair cost:
$195.00
1 toner cartridge 1
25.00
1 hour labor
70.00
LaserWriter and LaserWriter Plus
431
Symptoms: There are stains on the back of every printed page.
Probable diagnosis: The fuser roller cleaner felt is worn.
Solution: Check/replace the fuser roller cleaner felt (HP part FG1-
2377-020). If that doesn't do it, see the next entry.
Lower
unit
Cleaner
felt
Approximate cost of repairing it yourself: 1 min.
Approximate third-party repair cost: $325.00
5 hours labor 325.00
Approximate dealer repair cost: $350.00
5 hours labor 350.00
432
The Dead Mac Scrolls
Symptoms: There are stains on the back of every printed page.
Probable diagnosis: The lower unit is dirty.
Solution: Clean the lower unit, particularly the black plastic feeder
guide and brass-color transfer guide. Also see the prior entry.
Approximate cost of repairing it yourself:
30 min.
Approximate third-party repair cost:
$325.00
5 hours labor 325.00
Approximate dealer repair cost:
$350.00
5 hours labor 350.00
LaserWriter and LaserWriter Plus
433
Symptoms: A V4-inch-wide black stripe (like a tiny tire track) is
printed in the right margin of every printed page.
LaserWriter
□
Probable diagnosis: The separation belt is dirty.
Solution: Thoroughly clean the separation belt (HP part RFl-0224-
000) and the associated feeder rollers (located in the lower unit). If
that doesn't do it, see the next entry.
Approximate cost of repairing it yourself:
7 0 min.
Approximate third-party repair cost:
$325.00
5 hours labor 325.00
Approximate dealer repair cost:
$350.00
5 hours labor 350.00
434
The Dead Mac Scrolls
Symptoms: A l^-inch wide black stripe (like a tiny tire track) is
printed in the right margin of every printed page.
LaserWriter
□
Probable diagnosis: The photosensitive drum needs cleaning.
Solution: Clean the affected edge of the photosensitive drum. If the
problem recurs, replace the toner cartridge (HP part 92285 A).
Drum
Toner
cartridge
Approximate cost of repairing it yourself:
$89.95
1 toner cartridge
89.95
10 min.
Approximate third-party repair cost:
$164.95
1 toner cartridge
99.95
1 hour labor
65.00
Approximate dealer repair cost:
$195.00
1 toner cartridge 1
25.00
1 hour labor
70.00
LaserWriter and LaserWriter Plus
435
Symptoms: There are black marks on one side of every page.
LaserWriter
1
B
y
■ ;
□
Probable diagnosis: The photosensitive drum needs cleaning.
Solution: Clean the affected edge of the photosensitive drum. If the
problem recurs, replace the toner cartridge (HP part 92285A).
Drum
— LJ — ^ y
Toner
cartridge
Approximate cost of repairing it yourself:
$89.95
1 toner cartridge
89.95
10 min.
Approximate third-party repair cost:
$164.95
1 toner cartridge
99.95
1 hour labor
65.00
Approximate dealer repair cost:
$195.00
1 toner cartridge 1
25.00
1 hour labor
70.00
436
The Dead Mac Scrolls
Symptoms: There are regularly spaced horizontal white lines on
every page.
Probable diagnosis: The photosensitive drum is scarred.
Solution: Check/replace the toner cartridge (HP part 92285A).
Drum
/
m
-
L
L
E3 B—
Toner
cartridge
Approximate cost of repairing it yourself:
$89.95
1 toner cartridge
89.95
1 min.
Approximate third-party repair cost:
$164.95
1 toner cartridge
99.95
1 hour labor
65.00
Approximate dealer repair cost:
$195.00
1 toner cartridge 1
25.00
1 hour labor
70.00
LaserWriter and LaserWriter Plus
437
Symptoms: A very thin vertical line appears on every printed page.
The line is barely noticeable and extends into the margins.
LaserWriter
Probable diagnosis: The problem is in the fuser assembly.
Solution: Check/replace the cleaner felt (HP part FG1 -2377-020)
and the upper fuser roller (HP part RA1 -0697-000).
y V
Fuser
assembly
Approximate cost of repairing it yourself:
$18.00
1 upper roller
18.00
2 hours
Approximate third-party repair cost:
$361.00
1 upper roller
36.00
5 hours labor
325.00
Approximate dealer repair cost
$448.00
1 fuser assembly (699-0306)
378.00
1 hour labor
70.00
438
The Dead Mac Scrolls
Symptoms: A black vertical line appears on every printed page. The
line is bisected by white water spots (toner dropouts).
r
LaserWriter
1
□
Probable diagnosis: The problem is in the fuser assembly.
Solution: Check/replace the upper fuser roller (HP part RAl-0697-
000).
Fuser
assembly
Approximate cost of repairing it yourself:
$18.00
1 upper roller
18.00
2 hours
Approximate third-party repair cost:
$361.00
1 upper roller
36.00
5 hours labor
325.00
Approximate dealer repair cost
$448.00
1 fuser assembly
378.00
1 hour labor
70.00
LaserWriter and LaserWriter Plus
439
Symptoms: An ozone (auto-exhaust) smell lingers about the printer.
Other than that, it seems to be OK.
Probable diagnosis: The ozone filter is allowing gas to escape.
Solution: Replace the ozone filter (HP part FA2-5664-020).
Ozone
filter
If
/
— r=a D-
Toner
cartridge
Approximate cost of repairing it yourself:
$10.50
1 ozone filter
10.50
1 hour
Approximate third-party repair cost:
$346.00
1 ozone filter
21.00
5 hours labor
325.00
Approximate dealer repair cost:
$392.00
1 ozone filter
42.00
5 hours labor
350.00
440
The Dead Mac Scrolls
Symptoms: During every print job, the paper gets caught in the
fuser and the paper jam light comes on.
I I I - I
U Q 8^
reaciy/wait paper out paper jam
Probable diagnosis: The fuser rollers are clogged with toner.
Solution: Check/replace the toner cartridge (HP part 92285A),
clean the lower unit and clean/replace the upper and lower fuser
rollers (HP part RA1 -0697-000, HP part RA1 -0696-000).
Fuser
assembly
Approximate cost of repairing it yourself:
$47.00
1 upper roller (RA1 -0697-000)
18.00
2 hours
1 lower roller (RA1 -0696-000)
29.00
Approximate third-party repair cost:
$425.00
1 set of fuser rollers
100.00
5 hours labor
325.00
Approximate dealer repair cost
$448.00
1 fuser assembly (699-0306)
378.00
1 hour labor
70.00
LaserWriter and LaserWriter Plus
441
Symptoms: The margin width is irregular.
Probable diagnosis: The problem is in the paper tray.
Solution: Realign the paper fence to the side of the paper tray.
Fence
Approximate cost of repairing it yourself:
5 min.
Approximate third-party repair cost:
$70.00
1 hour labor
70.00
j Approximate dealer repair cost
$169.95
1 new paper cassette
99.95
1 hour labor
70.00
CHAPTER 10
LASERWRITER II SC,
NT AND NTX
LaserWriter II SC, NT and NTX
443
Symptoms: A thin vertical line appears on every printed page. The
line is barely noticeable and extends into the margins.
Probable diagnosis: The problem is in the fuser assembly.
Solution: Check/replace the fixing roller cleaner wand (HP part
RG1 -0966-000) and the upper roller (HP part RA1 -3968-000).
Approximate cost of repairing it yourself:
$26.85
1 fixing roller cleaner wand
1.85
2 hours
1 upper roller
25.00
Approximate third-party repair cost:
$379.00
miscellaneous fuser parts
54.00
5 hours labor
325.00
Approximate dealer repair cost:
1 new LaserWriter II fuser 661 -0440
525.00
$595.00
1 hour labor
70.00
444
The Dead Mac Scrolls
Symptoms: A black vertical line appears on every printed page. The
line is bisected by white water spots (toner dropouts).
Probable diagnosis: The problem is in the fuser assembly (HP part
RG1 -0939-000) located in the printer's lower unit.
Solution: Check/replace the upper roller (HP part RA1 -3968-000).
Approximate cost of repairing it yourself:
$25.00
1 upper roller
25.00
2 hours
Approximate third-party repair cost:
$375.00
1 upper roller
50.00
5 hours labor
325.00
Approximate dealer repair cost:
$595.00
1 new LaserWriter II fuser (661 -0440)
525.00
1 hour labor
70.00
445
LaserWriter II SC, NT and NTX
Symptoms: There's no test page. The paper out and paper jam lights
(located on the status panel) are both blinking (red). The inside of the
printer doesn't warm up.
I I II ^ —i —
U liiJ Q 8A/
ready/wait low toner paper out paper jam
Probable diagnosis: The problem is in the fuser assembly (HP part
RGl -0939-000) located in the printer's lower unit.
Solution: Check/replace the quartz heater bulb (HP part RH7-4024-
000). Also see the next entry.
Approximate cost of repairing it yourself:
$32.00
1 quartz heater bulb
32.00
2 hours
Approximate third-party repair cost:
$389.00
1 quartz heater lamp
64.00
5 hours labor
325.00
Approximate dealer repair cost:
$595.00
1 new LaserWriter II fuser (661 -0440)
525.00
1 hour labor
70.00
446
The Dead Mac Scrolls
Symptoms: There's no test page. The paper out and paper jam lights
(located on the status panel) are both blinking (red). The inside of the
printer doesn't warm up.
U UsJ Q 8^
reacly/wait low toner paper out paper jam
Probable diagnosis: The problem is in the fuser assembly (HP part
RG1 -0939-000) located in the printer's lower unit.
Solution: Check/replace the high-limit switch (HP part RF1-0842-
000). If that's not it, see the next entry.
Approximate cost of repairing it yourself:
$25.00
1 high-limit switch
25.00
2 hours
Approximate third-party repair cost:
1 fuser thermoswitch
50.00
$375.00
5 hours labor
325.00
Approximate dealer repair cost:
1 new LaserWriter II fuser (661-0440)
525.00
$595.00
1 hour labor
70.00
LaserWriter II SC NT and NTX
447
Symptoms: There's no test page. The paper out and paper jam lights
(located on the status panel) are both blinking (red). The inside of the
printer doesn't warm up.
LJ \hJ Q 8^
ready/vvait low toner paper out paper jam
Probable diagnosis: The problem is in the fuser assembly.
Solution: Check/replace the fuser thermostat (HP part RG1-0719-
000). Also see the prior entry.
Fuser
assembly
Lower
unit
Approximate cost of repairing it yourself:
$25.00
1 thermostat assembly
25.00
2 hours
Approximate third-party repair cost:
$375.00
1 fixing PCB assembly/thermistor
50.00
5 hours labor
325.00
Approximate dealer repair cost:
$595.00
1 new LaserWriter II fuser (661-0440)
525.00
1 hour labor
70.00
448
The Dead Mac Scrolls
Symptoms: There's no test page on a LaserWriter II NTX. On the
status panel, the red paper jam light, (but not the red paper out light),
the orange low toner light and the green ready/wait light are blinking
from right to left (red-skip-orange-green, red-skip-orange-green...).
— — — — I I — ^ —
U lisJ Q 8^
ready/wait low loner paper out paper jam
Probable diagnosis: The problem is on the LaserWriter II NTX I/O
board.
Solution: Check/replace the SIMMs in banks A, B and C.
Approximate cost of repairing it yourself:
$40.00
1 LaserWriter II FX/II NTX SIMM
40.00
1 hour
Approximate third-party repair cost:
1 LaserWriter II FX/II NTX SIMM
80.00
$405.00
5 hours labor
325.00
Approximate dealer repair cost:
1 new LaserWriter NTX I/O board
1031.67
$1,101.67
1 hour labor
70.00
LaserWriter II SC, NT and NTX
449
Symptoms: There's no test page on a LaserWriter II NT. The paper
jam light is blinking red, but there's no paper jam. The self-test (print
engine test) works OK.
II II II —
U \hJ Ub ^
reacly/wait low toner paper out paper jam
Probable diagnosis: The problem is on the LaserWriter II NT logic
board.
Solution: Check/replace the ROMs marked H2/L2 and Hl/Ll .
Approximate cost of repairing it yourself:
$50.00
1 ROM chip
50.00
2 hours
Approximate third-party repair cost:
$375.00
1 ROM chip
50.00
5 hours labor
325.00
Approximate dealer repair cost:
$851.67
1 new LaserWriter II NT I/O board
781.67
1 hour labor
70.00
450
The Dead Mac Scrolls
Symptoms: There's no test page on a LaserWriter II NT. The status
panel never lights up, but the self-test (print engine) works OK.
II II II II
u lisj Q 8^1
ready/wail low toner paper out paper jam
Probable diagnosis: The problem is on the LaserWriter II NT logic
board.
Solution: Check/replace the ROMs marked H3/L3 and HO/LO.
Approximate cost of repairing it yourself:
$50.00
1 ROM chip
50.00
2 hours
Approximate third-party repair cost:
1 ROM chip
50.00
$375.00
5 hours labor
325.00
Approximate dealer repair cost:
1 new LaserWriter II NT I/O board
781.67
$851.67
1 hour labor
70.00
LaserWriter II SC NT and NTX
451
Symptoms: The green ready light on a LaserWriter II SC is on and
steady, but there is no response to the Print... command. Under
Backgrounder, you get a dialog box indicating Print Error: 258.
A “Important file” failed to print. Do
you want to try to print it again?
II
Print Error: “258’
Ves
] c
Probable diagnosis: The problem is on the LaserWriter II SC logic
board.
Solution: Check/replace the SIMMs at board references D1 to J1 .
Approximate cost of repairing it yourself:
$32.00
1 256K LaserWriter II SC SIMM
32.00
1 hour
Approximate third-party repair cost:
1 256K LaserWriter II SC SIMM
64.00
$389.00
5 hours labor
325.00
Approximate dealer repair cost:
1 new LaserWriter II SC I/O board
291.67
$361.67
1 hour labor
70.00
452
The Dead Mac Scrolls
Symptoms: When printing 8-bit frame captures on a LaserWriter II
SC, everything prints in black and white (not in grayscale). When
printing object drawings, special effects like flips and rotations
generally fail to print.
Rotated spray can Rotated spray can
printed on a LW II NT printed on a LW II SC
Probable diagnosis: Unlike the LaserWriter II NT and II NTX, the
LaserWriter II SC doesn't have PostScript in ROM.
Solution: Install a software PostScript interpreter, like TScript Basic
(published by TeleTypesetting) on your hard drive (you'll need at
least 2 MB of RAM to use it).
T“Scripi Basic v3.0
ra
T-Script® Fonts
Approximate cost of repairing it yourself:
$55.00
1 TScript Basic (street price)
55.00
1 hour
Approximate third-party repair cost:
1 LaserWriter II NT I/O board
1,495.00
$1,565.00
1 hour labor
70.00
Approximate dealer repair cost:
1 LaserWriter II NT I/O board
2,261.67
$2,331.67
1 hour labor
70.00
LaserWriter II SC, NT and NTX
453
Symptoms: There are irregularly spaced white spots on every page.
Probable diagnosis: The toner is unevenly distributed.
Solution: Check/replace the toner cartridge (HP part 92295A).
Upper
unit —
Approximate cost of repairing it yourself:
$89.95
1 toner cartridge
89.95
1 min.
Approximate third-party repair cost:
1 toner cartridge
99.95
$164.95
1 hour labor
65.00
Approximate dealer repair cost:
1 toner cartridge
125.00
$195.00
1 hour labor
70.00
454
The Dead Mac Scrolls
Symptoms: The printout is generally too light.
Probable diagnosis: The print-density dial is set too high. The higher
the setting, the lighter the printout.
Solution: Turn the print-density dial to a lower number or fully
counterclockwise for the darkest possible printout.
Lower
Approximate cost of repairing it yourself:
7 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
LaserWriter II SC, NT and NTX
455
Symptoms: The printout is generally too light. The low toner light on
the status panel is blinking (orange).
■ - I — r — II II
U IkJ Q 8^
ready/wait low toner paper out paper jam
Probable diagnosis: The toner cartridge is empty.
Solution: Check/replace the toner cartridge (HP part 92295A) located
in the printer's upper unit.
Approximate cost of repairing it yourself:
$89.95
1 toner cartridge
89.95
1 min.
Approximate third-party repair cost:
$164.95
1 toner cartridge
99.95
1 hour labor
65.00
Approximate dealer repair cost:
$195.00
1 toner cartridge
125.00
1 hour labor
70.00
456
The Dead Mac Scrolls
Symptoms: Solid blacks appear to have been blotted. The edges are
rough, not crisp.
LaserWriter II NT
Probable diagnosis: The problem is in the transfer corona assembly
(located in the lower unit).
Solution: Clean/tighten the transfer corona assembly.
Transfer
corona
assembly
10 min.
$325.00
$350.00
Approximate cost of repairing it yourself:
Approximate third-party repair cost:
5 hours labor 325.00
Approximate dealer repair cost:
5 hours labor 350.00
LaserWriter II SC, NT and NTX
457
Symptoms: The printout is generally too dark.
Probable diagnosis: The print-density dial is set too low. The lower
the setting, the darker the printout.
Solution: Turn the print-density dial to a higher number or fully
clockwise for the lightest possible printout.
Approximate cost of repairing it yourself:
Approximate third-party repair cost:
1 hour labor
Approximate dealer repair cost:
1 hour labor
7 min.
65.00
$65.00
70.00
$70.00
458
The Dead Mac Scrolls
Symptoms: Every printout, including the test page, is solid white.
Typical history: The problem occurred right after you installed a new
toner cartridge.
Probable diagnosis: The sealing tape is still in the toner cartridge.
Solution: Check/remove the factory sealing tape.
Upper
unit —
Toner
—cartridge
iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii
III
Approximate cost of repairing it yourself:
1 min.
Approximate third-party repair cost:
$65.00
1 hour labor 65.00
Approximate dealer repair cost:
$70.00
1 hour labor 70.00
459
LaserWriter II SC, NT and NTX
Symptoms: Every printout, including the test page, is solid black.
Probable diagnosis: The problem is in the toner cartridge.
Solution: Check/replace the toner cartridge (HP part 92295A).
Toner
cartridge
Upper
unit —
Approximate cost of repairing it yourself:
$89.95
1 toner cartridge
89.95
1 min.
Approximate third-party repair cost:
$164.95
1 toner cartridge
99.95
1 hour labor
65.00
Approximate dealer repair cost:
$195.00
1 toner cartridge
125.00
1 hour labor
70.00
460
The Dead Mac Scrolls
Symptoms: Every printout, including the test page, is solid gray.
Probable diagnosis: The problem is in the toner cartridge.
Solution: Check/replace the toner cartridge (HP part 92295A).
Upper
unit —
Toner
cartridge
Approximate cost of repairing it yourself:
$89.95
1 toner cartridge
89.95
1 min.
Approximate third-party repair cost:
$164.95
1 toner cartridge
99.95
1 hour labor
65.00
Approximate dealer repair cost:
$195.00
1 toner cartridge
125.00
1 hour labor
70.00
LaserWriter II SC NT and NTX
461
Symptoms: There are stains on the back of every printed page.
Probable diagnosis: The problem is in the fuser assembly.
Solution: Check/replace the fixing roller cleaner wand (HP part
RG 1-0966-000).
Lower
unit
Approximate cost of repairing it yourself:
$1.85
1 fixing roller cleaner wand
1.85
1 min.
Approximate third-party repair cost:
$325.00
5 hours labor
325.00
Approximate dealer repair cost:
$350.00
5 hours labor
350.00
462
The Dead Mac Scrolls
Symptoms: There are stains on the back of every printed page.
Probable diagnosis: The lower unit is dirty.
Solution: Clean the lower unit, particularly the black plastic feeder
guide and brass-color transfer guide.
Approximate cost of repairing it yourself: 30 min.
Approximate third-party repair cost: $325.00
5 hours labor 325.00
Approximate dealer repair cost: $350.00
5 hours labor 350.00
LaserWriter II SC, NT and NTX
463
Symptoms: There are black marks on one side of every page.
Probable diagnosis: The photosensitive drum needs cleaning.
Solution: Clean the affected edge of the photosensitive drum. If the
problem recurs, replace the toner cartridge (HP part 92295A).
Drum
Approximate cost of repairing it yourself:
$89.95
1 toner cartridge
89.95
10 min.
Approximate third-party repair cost:
$164.95
1 toner cartridge
99.95
1 hour labor
65.00
Approximate dealer repair cost:
$195.00
1 toner cartridge
125.00
1 hour labor
70.00
464
The Dead Mac Scrolls
Symptoms: There are regularly spaced horizontal white lines on
every page.
Probable diagnosis: The photosensitive drum is scarred.
Solution: Check/replace the toner cartridge (HP part 92295A).
Approximate cost of repairing it yourself:
$89.95
1 toner cartridge
89.95
1 min.
Approximate third-party repair cost:
$164.95
1 toner cartridge
99.95
1 hour labor
65.00
Approximate dealer repair cost:
$195.00
1 toner cartridge
125.00
1 hour labor
70.00
LaserWriter II SC, NT and NTX
465
Symptoms: An ozone (auto-exhaust) smell lingers about the printer.
Other than that, it seems OK.
1
=
Illllllllllllllllllllllllllllllllllllllllll
III
Probable diagnosis: The ozone filter is allowing gas to escape.
Solution: Check/replace the ozone filter.
Approximate cost of repairing it yourself:
$10.50
1 ozone filter
10.50
1 hour
Approximate third-party repair cost:
1 ozone filter
21.00
$346.00
5 hours labor
325.00
Approximate dealer repair cost:
1 ozone filter
42.00
$392.00
5 hours labor
350.00
PARTS VENDORS
AND
SERVICE PROVIDERS
Parts vendors and service providers
467
American Educational Services
761 1 Allman Drive
Annandale VA 22003
703/256-5315
component-level repairs on 800K disk drives
replacement heads for 800K disk drives
Digi-Key
701 Brooks Avenue S
Box 677
Thief River Falls MN 56701-0677
800/344-4539
miscellaneous ICs and other small parts
GDT Softworks
Box 1 865
Point Roberts WA 98281
604/291-9121
BetterWriter printer drivers
Impact Printhead Services
8701 Cross Park Drive #101
Austin TX 78754
800/777-4323
OEM (C-Tech, formerly C. Itoh) printheads for ImageWriter printers
component-level repair of ImageWriter printheads
JDR Microdevices
2233 Samaritan Drive
San Jose CA 95124
800/538-5000
miscellaneous ICs and other small parts
468
The Dead Mac Scrolls
MCM Electronics
650 E Congress Park Drive
Centerville OH 45459-4072
800/543-4330
miscellaneous ICs and other small parts
MEI/Micro Center
1 1 00 Steelwood Road
Columbus OH 43212
800/634-3478
ribbon cassettes for ImageWriter printers
OEM (HP) toner cartridges for LaserWriter printers
National Parts
Box 573
Chester NY 10918
914/469-4800
OEM (C-Tech, formerly C. Itoh) parts for ImageWriter printers
On-Time Mac Service
268 C. Middlefield Road
Redwood City CA 94061
415/367-6263
component-level repairs on Macintosh analog boards, logic
boards and power supplies, ImageWriters and LaserWriters
Ontrack Computer Systems
6321 Bury Drive, #5-19
Eden Prairie MN 55346
800/752-1333
DiskManager Mac SCSI formatting software
Parts vendors and service providers
469
Parts Now
810 Stewart Street
Madison Wl 53704
800/421-0967
OEM (HP) parts for LaserWriter printers
component-level repairs on LaserWriter fusers and LaserWriter
power supplies
Soft Solutions
907 River Road #98
Eugene OR 97404
503/461-1 136
OEM parts for Macintosh analog boards and logic boards
component-level repairs on Macintosh analog boards, logic
boards, and power supplies
Macintosh Repair & Upgrade Secrets
Macintosh Printer (Repair & Upgrade) Secrets
Macintosh II Repair and Upgrade Secrets
Sony Service Company, Parts Division, Publications Department
8281 NW 107th Terrace
Kansas City MO 641 53
816/891-7550
service manuals for Sony CPD-1 302 and CPD-1 304 monitors
OEM parts for Sony monitors
TeleTypesetting
31 1 Harvard Street
Brookline, MA 02146
617/734-9700
TScript Basic (PostScript interpreter) for LaserWriter lISC
470
The Dead Mac Scrolls
Symptom index
Symptoms are grouped according to the hardware they affect,
following the book's chapter organization. For problems with an
Apple CD SC or Scanner, Hayes Smartmodem or Hewlett Packard
DeskJet Plus or DeskWriter, check the hard drive section.
Early Macs
128K
AppleTalk network problems, 72
mouse selects everything, 82
no startup bong, vertical lines, checkerboard pattern, 61
no startup bong, display dark, 142
resets ImageWriter II, 71
sad Mac, error code 01 41 20, 113
sad Mac, error code 0F0064, 1 23
512K/512Ke
AppleTalk network problems, 72
keyboard doesn't work, 95
mouse selects everything, 82
no hot restart, delayed flup-flup-flup noise, 28
no startup bong, vertical lines, checkerboard pattern, 61
no startup bong, display dark, 142
no startup from floppy disk, 78
resets ImageWriter II, 71
sad Mac, error code 01 41 20, 113
sad Mac, error code 0F0064, 1 23
startup problems, 79
unreadable disks, 75
date and time improper, 98
floppy disk
drive vibration, humming noise, 18
ejects, 92
rubs on cabinet opening, 77
keyboard
MOl 1 0 won't work, 96
M01 1 OA won't work, 97
works intermittently, 93-94
mouse
doesn't work, 89
jams when moved from side to side, 90
jams when moved up and down, 91
Symptom index
471
Early Macs, mouse, cont'd
pointer doesn't go down, 87
pointer doesn't go left, 85
pointer doesn't go right, 86
pointer doesn't go up, 88
selects everything, 84
no startup bong
checkerboard pattern, 62-64
checkerboard pattern, vertical lines, 61
display dark, 21 , 22-23
display dark, arcing and sparking, 1 08
display dark, chirp-chirp-chirp noise, 39
display dark, flup-flup-flup noise, 24-28
display dark, groaning noise, 20
display dark, humming noise, vibration, 18
display dark, loud screeching noise, 19
no beep noise, 1 1 0-1 1
tightly spaced horizontal lines, no desktop, 59
vertical bars, 65
with hot restart, 28
no startup, disks ejected, 92
noise
burping, 140
chirp-chirp-chirp, 21, 39
flup-flup-flup, 24-27
groaning, 20
humming, floppy drive vibration, 18
like teakettle, 14
loud screeching, 19
loud sizzling, dark display, 1 07
loud sizzling, display wiggles like worm on right side, 31
no beep, 1 1 0-1 1
simple beep, lock up, 70
soft ticking, 141
startup bong-flup, bong-flup, display dark, 29
whining like mosquito, 15
whining like mosquito, burning smell, 16-17
Plus
AppleTalk network problems, 74
mouse selects everything, 82
472
The Dead Mac Scrolls
Early Macs, Plus, cont'd
no startup bong
display dark, 143
tightly spaced horizontal lines, random dots, 60
no startup from floppy disk, 80
resets ImageWriter II, 73
startup problems, 81
unreadable disks, 76
sad Mac
error code 01 0601 ,112
error code 01 FE01 ,114
error code 030001, 115
error code 030002, 1 1 5
error code 030004, 1 1 5
error code 030008, 1 1 5
error code 03001 0, 1 1 5
error code 030020, 1 1 5
error code 030040, 1 1 5
error code 030080, 1 1 5
error code 030100, 116
error code 030200, 1 1 6
error code 030400, 1 16
error code 031000, 1 1 6
error code 032000, 1 1 6
error code 034000, 1 16
error code 038000, 1 1 6
error code 0F0002, 1 1 9-1 20
error code 0F0003, 121
error code 0F0004, 1 22
error code OFOOOA, 1 1 7
error code OFOOOD, 1 1 8
error code nnOOOl, 124
error code nn0002, 1 25
error code nn0004, 1 26
error code nn0008, 127
error code nnOOlO, 128
error code nn0020, 1 29
error code nn0040, 1 30
error code nn0080, 131
error code nnOI 00, 1 32
error code nn0200, 133
Symptom index
473
Early Macs, sad Mac, cont'd
error code nn0400, 1 34
error code nn0800, 135
error code nnlOOO, 136
error code nn2000, 137
error code nn4000, 1 38
error code nn8000, 1 39
smell
burning, whining noise like mosquito, 16
like ozone, 1 3
system errors, unique, repeatable, 67-69
time and date improper, 98
vibration of floppy drive, humming noise, 18
video display
blinks out, 41
bottom moves up and down, 36
bright diagonal lines, smoke, 45
bright flash of light, 1 09
bright horizontal line, smoke, 50
bright vertical line, 48
bright vertical line, smoke, 46
bright white dot in center, 106
bright white line in middle, 55
bright white line in middle, dark top half,
squashed bottom half, 56
checkerboard pattern, 62-64
dark, 40, 41-42
dark, arcing and sparking, 108
dark bottom half, 55
dark, loud sizzling noise, 107
dark, no bong, 20, 22-23
dark, startup bong-flup, bong-flup, 29
dark top half, bright white line in middle,
squashed bottom half, 56
dim vertical line, smoke, 47
elongated bottom half, 57
elongated top half, 58
flashes horizontal white lines, 41-43
frozen floppy disk icon, raster size of postage stamp, 66
herringbone, 1 2
474
The Dead Mac Scrolls
Early Macs, video display, cont'd
horizontally compressed, 34
horizontally expanded, 35
linearity poor, 44
lock up, simple beep noise, 70
moves in and out on right side, 37-38
no blinking ? mark, no disk drive spin, 105
no desktop, too bright, scan lines, 54
not rectangular, 102
off center, 1 03
out of focus, 99-1 00
raster size of postage stamp, frozen floppy disk icon, 66
scan lines, no desktop, too bright, 54
scan lines, too bright, 52-53
shrunken, 104
smoke, bright diagonal lines, 45
smoke, bright horizontal line, 50
smoke, bright vertical line, 46
smoke, dim vertical line, 47
squashed bottom half, bright white line in
middle, black top half, 56
squashed top half, 55
tightly spaced horizontal lines, no desktop, 59
tilted, 101
tiny gray area, bright flashing horizontal
line, dotted lines, 51
too bright, scan lines, 52-53
too bright, scan lines, no desktop, 54
vertical bars, 65
vertically compressed, 32-33
wiggles like worm on right side, 30
wiggles like worm on right side, loud sizzling noise, 31
Mac SE and SE/30
date and time improper, 179-80
disk drive
internal, doesn't mount, 176-77, 208-10
message to nonexistent, 219-20
upper, doesn't work, 214
keyboard and mouse don't work, 1 78
Symptom index
475
Mac SE and SE/30, cont'd
message
broken bus or bus not terminated, 208-9
broken bus or bus not terminated, burning smell, 176
error during inquiry command, 210
to nonexistent disk drives, 219-20
mouse and keyboard don't work, 1 78
no icon, display dark, 1 50
no startup
display dark, 148-49
intermittent flup-flup-flup noise, 218
no startup bong
checkerboard pattern, 174-75
display dark, no startup, 148-49
hissing, sizzling noise, 147
no beep, 213
noise
flup-flup-flup, no startup, 218
hissing, sizzling, display dark, 147
loud, display jitters and shakes, 146
loud sizzling, display wiggles like worm on right side, 1 51
no beep, 213
tweeting, 207
sad Mac
error code 0_0_0_0 over 0_F_0_F, 204
error code 0_0_0_5 over F_0_F_0, 205
error code 00000001 over nnnnnnnn, 181
error code 00000002 over OOOOOOnn, 1 82
error code 00000002 over OOOOnnOO, 1 84
error code 00000002 over OOnnOOnn, 183
error code 00000002 over nnOOnnOO, 1 85
error code 00000003 over OOOOOOnn, 1 86
error code 00000003 over OOOOnnOO, 1 88
error code 00000003 over OOnnOOnn, 1 87
error code 00000003 over nnOOnnOO, 189
error code 00000004 over OOOOOOnn, 190
error code 00000004 over OOOOnnOO, 192
error code 00000004 over OOnnOOnn, 191
error code 00000004 over nnOOnnOO, 193
error code 00000005 over OOOOOOnn, 194
error code 00000005 over OOOOnnOO, 196
476
The Dead Mac Scrolls
Mac SE and SE/30, sad Mac, cont'd
error code 00000005 over OOnnOOnn, 195
error code 00000005 over nnOOnnOO, 197
error code OOOOOOOE over OOOOOOnn, 198
error code OOOOOOOE over OOOOnnOO, 200
error code OOOOOOOE over OOnnOOnn, 199
error code OOOOOOOE over nnOOnnOO, 201
error code OOOOOOOE over 00000003, 202-3
SCSI devices don't mount, 1 76-77
smell of burning, broken bus message, 176
time and date improper, 179-80
video display
blinks out, 158
bright horizontal line, 165
bright vertical line, smoke, 161
bright white line in middle, squashed
bottom half, dark top half, 1 71
bright white line in middle, squashed top
half, dark bottom half, 1 70
checkerboard pattern, 174-75
dark bottom half, bright white line in
middle, squashed top half, 170
dark top half, bright white line in middle,
squashed bottom half, 171
dark, no icon, 1 50
dark, hissing, sizzling noise, 147
dark, no startup, 1 48-49
dim vertical line, smoke, 162
elongated bottom half, 172
elongated top half, 1 73
herringbone pattern, 145
horizontal line, 164
horizontally compressed, 154
horizontally expanded, 154
jitters and shakes, loud noise, 146
linearity poor, 1 59
moves in and out on right side, 156-57
not rectangular, 212
out of focus, 215-16
scan lines, too bright, 166-69
shrunken, 217
Symptom index
477
Mac SE and SE/30, video display, cont'd
smoke, vertical line, 160-62
squashed bottom half, bright white line in
middle, dark top half, 171
squashed top half, bright white line in
middle, dark bottom half, 170
tilted, 21 1
too bright, scan lines, 166-69
vertical bars, 206
vertical line, 163
vertical line, smoke, 160
vertically compressed, 152
vertically expanded, 153
wiggles like worm on right side, loud sizzing noise, 151
Mac II
date and time don't work, 240
DeskWriter doesn't work, 238-39
do-do-da-da sound, 225-26, 242
do-do-da-da sound
after error chord, 223-24
after high and higher notes, 228
after high note, 227
error chord, do-do-da-da sound, 223-24
hard drives
external, don't work, 233
external and internal, don't work, 234
green light on, no startup chime, 229-30
high note(s), do-do-da-da sound, 227-28
keyboard and mouse don't work, 235-36
Mode32 won't install, 231
modem and printer don't work, 237
mouse and keyboard don't work, 235-36
no startup, 241
no startup, after startup chime, 222
no startup chime, green light on, 229-30
printer and modem don't work, 237
sad Mac, error code OOOOOOOF over 00000001, 242
seven startup disk icons, 232
478
The Dead Mac Scrolls
Mac II, cont'd
startup chime
do-do-da-da sound, 225-26, 242
error chord, do-do-da-da sound, 223-24
high note, do-do-da-da sound, 227
high note, higher note, do-do-da-da sound, 228
otherwise no startup, 222
time and date don't work, 240
virtual memory won't run, 231
Floppy disk drives
1 .4MB (Apply/Sony MFD-75W)
eject problems, 259-60
insertion problems, 258
not Mac disk, 264
unreadable, 261-62
unreadable file, 263
400K (Apple/Sony OA-D34V)
eject problems, 244
not Mac disk, 248
unreadable, 245-46
unreadable file, 247
800K (Apple/Sony MFD-51W)
eject problems, 249-50
not Mac disk, 257
system error ID=10, 254
system error ID=15, 255
unreadable, 251-53
unreadable file, 256
replacing, with no test instruments, 265
disassembly, 265-73
materials, 265
track zero alignment, 274-76
Hard drives and peripherals
any model
disk access LED doesn't work, 278
no mount, error during inquiry command message, 279
any model/Conner CP3100, no mount, broken
bus or bus not terminated message, 288
Symptom index
479
Hard drives and peripherals, cont'd
any model/Lien power supply 10-8707A, no
spin, no lights, no sound, 285
any model/Miniscribe 8425SA, broken bus or
bus not terminated message, 290
any model/Quantum Q280
broken bus or bus not terminated message, 286
unreadable file, 287
any model/Seagate ST225N, slow mount,
no drive recognition, 289
Apple CD SC, unreadable disk, 301
Apple HD 20 SC/Miniscribe 8425SA
no mount, clunk-clunk noise, 282
no spin, stuck disk access light, ? mark, 281
sad Mac on startup, 280
Apple HD 40 SC/Quantum QA250, no mount,
no drive selection, 283
Apple HD 40 SC/Sony SRD 2040A, no spin,
smell like burning grease, 284
Apple Scanner, system boot intermittent, 302
CMS PI 100-SE/r/Conner CP3100, no mount,
broken bus or bus not terminated message, 288
CMS PRO60/Lien power supply 10-8707A, no spin,
no lights, no sound, 285
CMS PRO80-ll/i/Quantum Q280
broken bus or bus not terminated message, 286
unreadable file, 287
Hayes Smartmodem 2400 231 AA, no transmit or receive, 303
Hewlett Packard DeskJet Plus 500, blinking on light, 304
Hewlett Packard DeskWriter
Datacomm buffer overun, 305
Datacomm error, 306
Error trap 1 0864, 308
prints garbage in reverse video, 307
Hisper 20/Seagate ST225N, slow mount,
no drive recognition, 289
Jasmine 100/PG 3045 power supply, no startup, 293
Jasmine 20/Miniscribe 8425SA, broken bus or
bus not terminated message, 290
480
The Dead Mac Scrolls
Hard drives and peripherals, cont'd
Jasmine 80/Quantum Q280
broken bus or bus not terminated message, 286
unreadable file, 287
Jasmine Direct Drive 80/Quantum Q280, no or slow startup, 292
LaCie Cirrus 80/CP ML40-3101, no startup, 294
Mac ll/Quantum QA250, no mount, no drive selection, 283
Mac ll/Sony SRD 2040A, no spin, smell like burning grease, 284
Mac SE/Miniscribe 8425SA
no mount, clunk-clunk noise, 282
no spin, stuck disk access light, ? mark, 281
sad Mac on startup, 280
Mac SE/Sony SRD 2040A, no spin, smell like burning grease, 284
Mac XL/Miniscribe 8425SA
no mount, clunk-clunk noise, 282
no spin, stuck disk access light, ? mark, 281
sad Mac on startup, 280
MicroTech Nova 50/PG 3045 power supply, no startup, 293
Mirror/MagNet 40/40, no mount, 295
Peak 20/5.25-inch Miniscribe, no or slow startup, 296
Rodime Systems 20 Plus/Seagate ST225N, sad Mac
error code OFOOOA, 297
SuperMac DF 40XP/5. 25-inch NEC, no or slow startup, 299
SuperMac DF 40XP/CP ML40-3101 PS, no startup, 298
Warp 9 Photon/3. 5-inch Lapine, no LED light, no mount, 300
External monitors
any model for Mac II, black rippling line, 337
any model for Mac Plus, SE, SE/30, black rippling line, 336
Apple High-Resolution Monochrome
always out of focus, 330
dark, horizontally compressed, 334
loss of display, 331
no display, 332
off center, 333
rolls from top to bottom, 329
vertically compressed, 335
I
Symptom index
481
External monitors, cont'd
AppleColor RGB
always out of focus, 314
blue shadow on left side, 31 7
colored blotches, 318
colored shadows everywhere, 315
horizontally compressed, 327
jitters in and out of focus, 313
left side folds over, 31 2
loss of display, 322-23
no display, 324-25
off center, 326
red shadow in upper right corner, 316
rolls from top to bottom, 31 1
thin horizontal line, 310
tinted blue, 321
tinted green, 320
tinted red, 319
vertically compressed, 328
Goldstar 1450 Plus Multiscan, cable doesn't work with Mac II, 339
Packard Bell PB 1272A, no horizontal sync, 340
Princeton Max 15 Multiscan, cable doesn't
work with Mac II, 341
Samsung MG 2525, no horizontal sync, 342
Samsung MG 2565, no horizontal sync, 340
Sony CPD 1302 Multiscan
cable doesn't work with Mac SE, 347
cable doesn't work with Mac II, 346
doesn't switch off, 345
sides curve inward, 343
vertical height collapses, 344
VGA, cable doesn't mate with Mac LC, 338
ImageWriter /
clunk-clunk-clunk noise, 357
continues printing when paper out, 371
grinding noise, stalling, 356
intermittent dropouts, 369
light printout, 367-68
482
The Dead Mac Scrolls
ImageWriter I, cont'd
missing dots, 361-63
no line feed, overprinting, 355
paper slips, overprinting, 373
paper won't load, 372
pin-feed paper derails, 370
scraping noise, horizontal scratch marks, 358
Select lamp doesn't light, no print response, 352-54
Select lamp lights, no print response, 349-51
squashed first line, 359-60
wavy printout, uneven vertical lines, 364-66
ImageWriter II
cyan overlaps black, 382
Draft and Best quality printouts ugly, 385
dropouts intermittent, 396
error light, paper in printer, 380
fading between light and dark, 397
light printout, 394-95
missing dots, 387-89
no line feed, overprinting, 377-78
not shown in Chooser or Choose Printer DA, 379
on/off button intermittent, 384
paper slips, overprinting, 401
paper won't load, 400
pin-feed paper derails, 398
printing continues with no paper, 399
scraping noise, horizontal scratch marks, 381
Select lamp doesn't light, no print response, 375-76
staircaselike printout, 386
wavy printout, uneven vertical lines, 390-93
yellow overlaps black, 383
LaserWriter and LaserWriter Plus
black marks on one side, 435
black stripe like tire track in right margin, 433-34
blotted printout, edges rough, 425-26
dark printout, 427
dropouts like white water spots, 421-22
horizontal white lines, 436
Symptom index
483
LaserWriter and LaserWriter Plus, cont'd
light printout, 423-24
margin width irregular, 441
no test page
no print response, 418-20
no test LED, 404
test LED blinks, 405
test LED blinks, error code nnnnnn02, 407
test LED blinks, error code nnnnnn04, 408
test LED blinks, error code nnnnnn08, 409
test LED blinks, error code nnnnnnOC, 415
test LED blinks, error code nnnnnnIO, 410
test LED blinks, error code nnnnnn20, 411
test LED blinks, error code nnnnnn30, 416
test LED blinks, error code nnnnnn40, 412
test LED blinks, error code nnnnnn80, 413
test LED blinks, error code nnnnnnCO, 417
test LED stays on, error code nnnnnnOl , 406
test LED stays on, error code nnnnnn02, 407
test LED stays on, error code nnnnnn03, 414
test LED stays on, 403
ozone smell, 439
paper jam, 440
solid black printout, 429
solid gray printout, 430
solid white printout, 428
stains on back, 431-32
thin vertical line, 437
vertical line, dropouts like water spots, 438
LaserWriter II SC, NT and NTX
black marks on side of page, 463
blotted printout, edges rough, 456
dark printout, 457
dropouts like white water spots, 453
horizontal white lines, 464
light printout, 454-55
no gray scale, no special effects, 452
no print response, print error, 258, 451
484
The Dead Mac Scrolls
LaserWriter II SC, NT and NTX, cont'd
no test page
no status panel, 450
paper jam light blinks, 449
paper jam, low toner, and ready/wait lights blink, 448
paper out and paper jam lights blink, 445-47
ozone smell, 465
solid black printout, 459
solid gray printout, 460
solid white printout, 458
stains on back, 461-62
thin vertical line, 443
vertical line, dropouts like water spots, 444
For more information on Macintosh Bible
products^ or to order copies^
see the following
pages.
Macintosh. Bible products
The Mac Bible, Third Edition. It's the best-selling Mac book ever, with 597,000 copies
in print (including six foreign translations). The Third Edition has 1,115 pages, with a 90-
page index and a 60-page glossary. At 2.5^ a page for the best — and most clearly written —
Mac information available, how can you go wrong? $28.
The Mac Bible Guide to FileMaker Pro. "A must for every FileMaker Pro user," as Dennis
Marshall, Claris's FileMaker Pro prcxluct manager put it, this is the first comprehensive guide to
the Mac's leading database program. With dozens of step-by-step procedures, shortcuts and
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The Mac Bible Guide to System 7. System 7 represents the most dramatic changes ever
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The Mac Bible Software Disks, Third Edition. This companion to The Mac Bible is full of
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literally thousands of programs, these disks offer you la creme de la creme. Over 1 .5 mega-
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The Mac Bible "What Do I Do Now?" Book, Second Edition. Completely updated
through System 7, this bestseller covers just about every sort of basic prol^lem a Mac user can
encounter — from the wrong fonts appearing in a printout to the mouse not responding. Easy
to understand, it's an essential resource for beginners and experienced users alike. $15.
The Dead Mac Scrolls. Now any Mac owner — from the novice to the expert — can keep
repair costs down. In this unique and encyclopedic guide, Macintosh guru Larry Pina diagnoses
hundreds of hardware problems, shows you the simplest and cheapest way to fix them, and tells
you how much the repairs should cost. $32.
The Dead Mac Scrolls Disk. Align, diagnose and evaluate monitors and Apple printers with
the latest versions of Larry Pina's Color Test Pattern Generator and Laser Test Character
Generator programs. Important logic board tests are also included on this invaluable disk. $32.
System 7 package. Save $5 when you buy The Mac Bible and our Guide to System 7 together. $35.
Bible/sohwfare combo. Save $10 when you buy The Mac Bible and the Bible disks together. $38.
Super combo. Save $1 3 by buying The Mac Bible, the Bible disks and "What Do I Do Now?" Book. $48.
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THE DEAD MAC SCROLLS
$32
Larry Pina continues to do what he does better than
anyone — shrink repair bills for Mac owners.
Owen Hartnett, Director, Macintosh Technical Group,
Boston Computer Society
Larry Pina is the patron saint of Mac users and a godsend '
to anyone who's ever had a Macintosh hardware problem.
This guide will save Mac owners a fortune, and repair
technicians hours of head-scratching.
Jeff Mi Istead, MacDser Labs t
While the Mac is easy to use, it's also expensive to fix (once
the warranty honeymoon is over). But now you don't have
to hand your computer over blindly and pray that the bill
doesn't go through the roof.
In this encyclopedic guide, Macintosh repair guru Larry Pina
diagnoses problems that can stump even experts for hours,
shows you the simplest and cheapest way to fix them, and
tells you how much the repairs should cost.
Brought to you by the publishers of The Macintosh Bible, .
the world's best-selling Mac book. The Dead Mac Scrolls
covers every Mac old enough to have a post-warranty repair
history, and many peripherals too. It can save .you weeks of ,
downtime, thousands of dollars and endless frustration.
Still not convinced?
Then take advantage of our
30-day money-back guarantee
and see for yourself.
O A Goldstein & Blair book
Published by Peachpit Press
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