JVC Car Stereo System KD-G645 user manual

KD-G646/KD-G645

JVC

CD RECEIVER

CD KD-G646/KD-G645

f \

For canceling the display demonstration, see page 6.

mmmmmz ■ 0 mm 6 n °

V_ J

For installation and connections, refer to the separate manual.

/ INSTRUCTIONS

GET0502-005A

[UT]

Thank you for purchasing a JVC product.

Please read all instructions carefully before operation, to ensure your complete understanding and to obtain the best
possible performance from the unit.

IMPORTANT FOR LASER PRODUCTS

1. CLASS 1 LASER PRODUCT

2. CAUTION: Do not open the top cover. There are no user serviceable parts inside the unit; leave all servicing to
qualified service personnel.

3. CAUTION: Visible and/or invisible class 1M laser radiation when open. Do not view directly with optical
instruments.

4. REPRODUCTION OF LABEL: CAUTION LABEL, PLACED OUTSIDE THE UNIT.

CAUTION

ATTENTION

AVISO

VARNING

at

CAUTION

VISIBLE AND/OR

RAYONNEMENT LASER

RADIACION LASER

SYNLIG OCH/ ELLER

VISIBLE AND/OR

INVISIBLE CLASS 1M

VISIBLE ET/OU

DE CLASE 1M

OSYNLIG

M/ffcliT'Rffl

INVISIBLE CLASS E

LASER RADIATION

INVISIBLE DE CLASSE

VISIBLE Y/O INVISIBLE

laserstrAlning,

LASER RADIATION

WHEN OPEN. DO NOT

1M UNE FOIS OUVERT.

CUANDO ESTA

KLASS 1M, NAR DENNA

WHEN OPEN.

VIEW DIRECTLY WITH

NE PAS REGARDER

ABIERTO. NO MIRAR

DEL AR OPPNAD.

u*t.

DO NOT STARE

OPTICAL INSTRUMENTS.

DIRECTEMENT AVEC

DIRECTAMENTE

BETRAKTA EJ

INTO BEAM.

IEC60825-1:2001

DES INSTRUMENTS

CON INSTRUMENTAL

STRALEN MED OPTISKA

FDA 21 CFR

(ENG)

OPTIQUES. (FRA)

OPTICO. (ESP)

INSTRUMENT. (SWE)

(JPN)

(ENG)

'N

If you need to operate the unit while driving, be
sure to look around carefully or you may be involved
in a traffic accident.

V___ J

How to reset your unit

4

Your preset adjustments will also be erased.

How to forcibly eject a disc

Caution on volume setting:

Digital devices (CD/USB) produce very little noise
compared with other sources. Lower the volume
before playing these digital sources to avoid
damaging the speakers by sudden increase of the
output level.

ATT

[Hold] mu

• Be careful not to drop the disc when it ejects.

• If this does not work , reset your unit.

IT How to use the M MODE button

If you press M MODE, the unit goes into functions mode,
then the number buttons and A/T buttons will work
as different function buttons.

r

Ex.: When number button 2 works as

\

MO (monaural) button.

MODE L

8 MO

CK) j

V

J

To use these buttons for their original functions
again after pressing M MODE, wait for 5 seconds
without pressing any of these buttons until the
functions mode is cleared, or press M MODE again.

CONTENTS

Control panel — KD-G646/KD-G645 . 4

Remote controller — rm-rkso . 5

Getting started. 6

Basic operations. 6

Radio operations. 7

Disc/USB device operations. 8

Playing a disc in the unit. 8

Playing from a USB device. 8

Sound adjustments.11

General settings — PSM.12

Other external component

operations.14

Title assignment.14

Maintenance.15

More about this unit.16

Troubleshooting.19

Specifications.21

Attaching the control panel

The control panel illustrations used for explanation
in this manual is of KD-G645.

For safety...

• Do not raise the volume level too much, as this will
block outside sounds, making driving dangerous.

• Stop the car before performing any complicated
operations.

Temperature inside the car...

If you have parked the car for a long time in hot or cold
weather, wait until the temperature in the car becomes
normal before operating the unit.

Parts identification

|T| ▲ (up) /▼ (down) buttons
H] ± (eject) button

[3 c !)/ 1 ATT (standby/on attenuator) button
30 Control dial
3 Remote sensor

DO NOT expose the remote sensor to strong light

(direct sunlight or artificial lighting).

[3 BAND button

0 Loading slot

3 Display window

3 EQ (equalizer) button

0o| DISP (display) button

53 l±j (control panel release) button

SI SRC (source) button

S3 ^ buttons

S3 AUX (auxiliary) button

SI SEL (select) button

S3 M MODE button

S3 MO (monaural) button

S3 SSM (Strong-station Sequential Memory) button

S3 Number buttons
M RPT (repeat) button
M RND (random) button
H AUX (auxiliary) input jack
H USB (Universal Serial Bus) input jack
M Source display / Track number / Folder number /
Time countdown indicator
H Tr (track) indicator
M DISC indicator

M Playback mode / item indicators—RND (random),
m (disc), m (folder), RPT (repeat)

M Tuner reception indicators—ST (stereo),

MO (monaural)

M Sound mode (iEQ: intelligent equalizer) indicators
—CLASSIC, HIP HOP, JAZZ, ROCK, POPS, USER
33 LOUD (loudness) indicator
33 EQ (equalizer) indicator
31 Disc information indicators—

TAG (Tag information), fit (folder), J3 (track/file)
33 Main display

Remote controller —«g

Installing the lithium coin battery
(CR2025)

Aim the remote controller directly at the remote
sensor on the unit. Make sure there is no obstacle
in between.

"A

Do not install any battery other than CR2025 or
its equivalent; otherwise, it may explode.

Do not leave the remote controller in a place
(such as the dashboard) exposed to direct
sunlight for a long time; otherwise, it may
explode.

Store the battery in a place where children
cannot reach to avoid the risk of accidents.

To prevent the battery from over-heating,
cracking, or starting a fire:

- Do not recharge, short, disassemble, heat the
battery, or dispose of it in a fire.

- Do not leave the battery with other metallic
materials.

- Do not poke the battery with tweezers or similar
tools.

- Wrap the battery with tape and insulate when
throwing away or saving it.

Main elements and features

CD c!)/i/ATT (standby/on/attenuator) button

• Turns the power on if pressed briefly or
attenuates the sound when the power is on.

• Turns the power off if pressed and held.

[3 A U (up) / D (down) T buttons

• Changes the FM/AM bands with A U.

• Changes the preset stations with D T.

• Changes the folder of the MP3/WMA.

3 VOL-/VOL + buttons

• Adjusts the volume level.

H SOUND button

• Selects the sound mode (iEQ: intelligent
equalizer).

3 SOURCE button

• Selects the source.

[3 ◄ R (reverse) / F (forward) ► buttons

• Searches for stations if pressed briefly.

• Fast-forwards or reverses the track if pressed and
held.

• Changes the track if pressed briefly.

Getting started

Basic operations ■

Turn on the power.

ATT

I—► FM1/FM2/FM3/AM-,

LaUXIN^USB^CD*-^

* You cannot select these sources if they are not
ready or not connected.

For FM/AM tuner

r^FM1^FM2^FM3-
© 1 -AM-

Adjust the volume.

[Turn]

VOLUME 20

Volume level appears.

| Basic settings

• See also "General settings — PSM" on pages 12 and
13.

1 SEL

[Hold]

\J] Canceling the display demonstrations

Select "DEMO," then "DEMO OFF."

2 ] Setting the dock

Select "CLOCK HOUR," then adjust the hour.
Select "CLOCK MIN" (minute), then adjust the
minute.

3 Finish the procedure.

SEL

To check the current clock time while the

power is turned off

Q

Clock time is shown on the display for
about 5 seconds. See also page 13.

Adjust the sound as you want. (See
pages 11 and 12.)

To drop the volume in a
moment (ATT)

To restore the sound, press the
button again.

ATT

To turn off the power

ATT

\ 0/1

\x [Hold]

Radio operations

When an FM stereo broadcast is hard to

receive

I—^ FM1/FM2/FM3/AM-.

LiyxiN^USB^CD-^

r*» FM1 -►FM2 -► FM3 -i
1 - AM-*- 1

Lights up when receiving an FM stereo
broadcast with sufficient signal strength.

—6 -

88.30MHz

e

Start searching for a station.

When a station is received, searching stops.
To stop searching, press the same button
again.

To tune in to a station manually

In step ©above...

iM92.50MHz

-

\ 2 \ Select a desired station frequency.

MODE ^ 8 MO

(2D t

Lights up when monaural mode is activated.

4)

MONO

Reception improves, but the stereo effect will be lost.

To restore the stereo effect, repeat the same
procedure. "MONO OFF" appears and the MO indicator
goes off.

| Storing stations in memory

You can preset six stations for each band.

FM station automatic presetting—
SSM (Strong-station Sequential
Memory)

1 Select the FM band (FM1 - FM3) you want to
store into.

©

r*- FM1 -► FM2 -► FM3 -i

1 -AM-*- 1

2

2D

3 9 SSM

[Hold]

"SSM" flashes, then disappears when automatic
presetting is over.

SSM

'?? ^

Local FM stations with the strongest signals are
searched and stored automatically in the FM band.

Continued on the next page

Manual presetting

Ex.: Storing the FM station of 92.50MHz into preset
number 4 of the FM1 band.

i

©

p-FMI

FM2-*-FM3-i

-AM-«- 1

2 -

© 92JOMHZ

3

10

[Hold]

Preset number flashes for a while.

Listening to a preset station

1 ^iSP r*~

© t

FM1^FM2^FM3
-AM-

2 Select the preset station (1 - 6) you want.

7 8 MO 9 SSM 10 11 RPT 12 RND

Disc/ USB device
operations

ll°o 1 - 1 l| : For built-in CD player operations.

[ ] : For external USB device operations.

Playing a disc in the unit

All tracks will be played repeatedly until you change the
source or eject the disc.

To stop play and eject the disc

Press SRC to listen to another
playback source.

or

To check the other information while

listening to an FM or AM station

s n

| — ^ Frequency -► Clock -►

disp Station name* -► (back to the
beginning)_

* If no title is assigned to a station i, "NO NAME" appears.
To assign a title to a station, see page 14.

Playing from a USB device ■h

This unit can play MP3/WMA tracks stored in a USB
device (except HDD).

All tracks in the USB device will be played repeatedly
until you change the source.

If a USB device has been attached...

/&v |—► FM1/FM2/FM3/AM-.

VgJ L AUX | N ^ USB ^ CD ^J

Playback starts from where it has been stopped
previously.

• If a different USB device is currently attached,
playback starts from the beginning.

To fast-forward or reverse the track

To go to the next or previous track

ll°o ■=1

r^n

To go to the next or previous folder (for

MP3/WMA)

i°o ■=ni

To detach the USB device, straightly pull it out from
the unit.

• Removing the USB device will also stop playback.
Then, press SRC to listen to another playback source.

"\

Avoid using the USB device if it might hinder your
safety driving.

Do not pull out or attach the USB device
repeatedly while "READING" appears on the
display.

Do not start a car engine if a USB device is
connected.

This unit may not be able to play the files
depending on the type of the USB device.

Operation and power supply may not work as
intended for some USB devices.

You cannot connect a computer to the USB input
jack of the unit.

Make sure all important data has been backed up
to avoid losing the data.

Do not leave a USB device in the car, expose to
direct sunlight, or high temperature to avoid
deformation or cause damage to the USB device.
Some USB devices may not work immediately
after you turn on the power.

For more details about USB operations, see pages
17 and 18.

_ J

To locate a particular track (for CD) or folder

(for MP3/WMA) directly | | nQ ,_, |

To select a number from 01 - 06:

7 8 MO 9 SSM 10 11 RPT 12 RND

To select a number from 07-12:

7 8 MO 9 SSM 10 11 RPT 12 RND

[Hold]

To use direct folder access on MP3/WMA, it is
required that folders are assigned with 2-digit
numbers at the beginning of their folder names—
01,02,03, and so on.

To select a particular track in a folder
(for MP3/WMA):

V

| Other main functions
Skipping tracks quickly during play

I I l°o <=' I

• For MP3/WMA, you can skip tracks within the same
folder

Ex.: To select track 32 while playing tracks whose
number is a single digit (1 to 9)

*| MODE

(ID

Track 1 to 9 -► Track 10 —i
- 20^

Each time you press the button, you can skip 10
tracks.

• After the last track, the first track will be selected
and vice versa.

Changing the display information

Q

DISP

While playing an audio CD or CD Text

r \

A -► Disc title/performer* 1 -► Track

title* 1 B -► (back to the beginning)

V___ J

While playing an MP3/WMA disc or
USB device

. When "TAG DISPLAY" is set to "TAG ON"

(see page 13)

A -► Album name/performer (folder
name* 2 ) [ tag SB ] -* Track title (file

name* 2 ) [TAGJ3] -* B -► (back to the
beginning)

• When "TAG DISPLAY" is set to "TAG OFF"

Track 31 -Bi >

□

Prohibiting disc ejection E 1

You can lock a disc in the loading slot.

[Hold] CE3

EJECTLOCK

-mrTfmTTTTrm—

To cancel the prohibition, repeat the same
procedure.

f

A -► Folder name [SB]-* File name

[J3\-* B -► (back to the beginning)

A : Clock with the current track number
B : The elapsed playing time with the current track
number

[ ] : Corresponding indicator lights up on the display

#1 If the current disc is an audio CD, "NO NAME" appears.
* 2 If an MP3/WMA file does not have Tag information,
folder name and file name appear. In this case, the
TA Q indicator will not light up.

j Selecting the playback modes

You can use only one of the following playback modes
at a time.

^ MODE

Sound adjustments

You can select a preset sound mode suitable to the
music genre (iEQ: intelligent equalizer).

EEH

USER -► ROCK -► CLASSIC -i
JAZZ ^ HIP HOPPOPS ^

2 Select your desired playback mode.

■ Repeat play " R !I

Mode

Plays repeatedly

TRACK RPT :

The current track. [RPT ]

FOLDER RPT* :

All tracks of the current folder.

[ mRPT ]

RPT OFF

Cancels.

■ Random play 12 RND

Mode

Plays at random

FOLDER RND*:

All tracks of the current folder,
then the tracks of the next folder
and so on. [ RNDm ]

ALL RND

All tracks of the current disc or
USB device. [rnd&>]

RND OFF

Cancels.

* Only while playing a media (MP3/WMA/USB).

[ ] : Corresponding indicator lights up on the
display

^\Preset values

BAS

MID

TRE

LOUD

Indication (Forj\^

USER

(Flat sound)

00

00

00

OFF

ROCK

(Rock or disco music)

+03

00

+02

OFF

CLASSIC

(Classical music)

+01

00

+03

OFF

POPS

(Light music)

+02

+01

+02

OFF

HIP HOP

(Funk or rap music)

+04

-02

+01

OFF

JAZZ

(Jazz music)

+03

00

+03

OFF

BAS: Bass MID: Mid-range TRE: Treble LOUD: Loudness

Adjusting the sound

You can adjust the sound characteristics to your
preference.

BASS-►MIDDLE ^TREBLE "►FADER "►BALANCE-!
L VOLUME — VOL ADJ SUB.W* ^ LOUD -J

* Displayed only when "L/O MODE" is set to "SUB. I W"
(seepage 13).

2

[Turn]

Continued on the next page

Indication, [Range]

General settings—PSM

BASS* * 1 , [-06to +06]

Adjust the bass.

MIDDLE* 1 (mid-range), [-06 to +06]

Adjust the mid-range frequencies sound level.

TREBLE* 1 , [-06 to +06]

Adjust the treble.

FADER* 2 , [R06 to F06]

Adjust the front and rear speaker output balance.

BALANCE* 3 , [L06 to R06]

Adjust the left and right speaker output balance.

LOUD * 4 (loudness), [LOUD ON or LOUD OFF]

Boost low and high frequencies to produce a
well-balanced sound at a low volume level.

SUB.W* 5 , [00 to 08, initial: 04]

Adjust the subwoofer output level.

VOL ADJ (volume adjust), [-05 to +05, initial: 00]
Adjust the volume level of each source (except FM), in
relation to the FM volume level. The volume level will
automatically increase or decrease when you change
the source.

• Before making an adjustment, select the source you
want to adjust.

VOLUME, [00 to 50 or 00 to 30] * 6
Adjust the volume.

*! When you adjust the bass, mid-range, or treble, the
adjustment you have made is stored for the currently
selected sound mode (iEQ) including "USER."

* 2 If you are using a two-speaker system, set the fader
level to "00."

* 3 This adjustment will not affect the subwoofer output.
* 4 The adjustment made (LOUD ON/LOUD OFF) will be
applied to all sound modes.

* 5 Displayed only when "L/O MODE" is set to "SUB. W”
(seepage 13).

1(6 Depending on the amplifier gain control setting. (See
page 13 for details.)

You can change PSM (Preferred Setting Mode) items
listed in the table on page 13.

1 SEL

OE? [Hold]

2 Select a PSM item.

3 Adjust the PSM item selected.

(O'-

4 Repeat steps 2 and 3 to adjust other PSM
items if necessary.

5 Finish the procedure.

SEL

Indications

Item

(_: Initial)

Selectable settings, [reference page]

DEMO

Display

demonstration

• DEMOON

• DEMO OFF

: The display demonstration will be activated automatically if no
operation is done for about 20 seconds, [6].

: Cancels.

CLOCK DISP* 1

Clock display

• CLOCK ON

• CLOCK OFF

: The clock time is shown on the display at all times when the power is
turned off.

: Cancels; pressing DISP will show the clock time for about 5 seconds
when the power is turned off, [6].

CLOCK HOUR

Hour adjustment

1-12

[Initial: 1(1:00)], [6]

CLOCK MIN

Minute adjustment

00-59

[Initial: 00 (1:00)], [6]

DIMMER

Dimmer

• AUIO

• ON

• OFF

: Dims the display and button illumination when you turn on the
headlights.

: Activates dimmer.

: Cancels.

SCROLL * 2

Scroll

• ONCE

• AUTO

• OFF

: Scrolls the displayed information once.

: Repeats scrolling (at 5-second intervals).

: Cancels.

• Pressing DISP for more than one second can scroll the display
regardless of the setting.

L/O MODE

Line output mode

• REAR

• SUB.W

: Select if the REAR LINE OUT terminals are used for connecting the
speakers (through an external amplifier).

: Select if the REAR LINE OUT terminals are used for connecting a
subwoofer (through an external amplifier).

SUB.WFREQ* 3

Subwoofer cutoff
frequency

. LOW

• MID

• HIGH

: Frequencies lower than 90 Hz are sent to the subwoofer.

: Frequencies lower than 135 Hz are sent to the subwoofer.

: Frequencies lower than 180 Hz are sent to the subwoofer.

TAG DISPLAY

Tag display

• TAG ON

• TAG OFF

: Shows the Tag information while playing MP3/WMA tracks, [10].

: Cancels.

AMP GAIN

Amplifier gain
control

• LOW POWER

• HIGH POWER

: VOLUME 00 - VOLUME 30 (Select this if the maximum power of the
speaker is less than 50 W to avoid damaging the speaker.)

: VOLUME00-VOLUME50

#1 If the power supply is not interrupted by turning off the ignition key of your car, it is recommended to select
"CLOCK OFF" that you save the car's battery.

* 2 Some characters or symbols will not be shown correctly (or will be blanked) on the display.

* 3 Displayed only when "L/0 MODE" is set to "SUB. W."

ENGLISH

Other external component

Title assignment

operations

You can assign titles to 30 station frequencies (FM and
AM) and ud to 8 characters for each station name.

AUX (auxiliary) input jack on the control panel.

i\ |—FM1/FM2/FM3/AM
ix LaIII

AUXIN-^USB -

CD

• You can also select "AUX IN" as the playback
source by pressing the SRC (source) button.

Turn on the connected component and
start playing the source.

Adjust the volume.

[Turn]

Adjust the sound as you want. (See
pages 11 and 12.)

To check the other information while

listening to an external component

Q

Clock*—AUXIN

1 Select FM/AM.

I—FM1/FM2/FM3/AM -

L AUX INUSBCD

2 Show the title entry screen.

B ^14 zib

>>*<<

—

Assign a title.

[U Select a character.

[Turn]

A

cn

o

D E F G

H

O

l

J K

L

M

N

P

Q

R

S

T

u

V

w

X

Y

z

0

i

2

3

4

5

6

7

8

9

-

/

<

>

space

Move to the next (or previous) character
position.

[3 Repeat steps U] and H\ until you finish
entering the title.

4 Finish the procedure.

SEL

To erase the entire title

In step 2 above...

ED [ Hol<| ] 4

DISP f

Maintenance

How to dean the connectors

Frequent detachment will deteriorate the connectors.
To minimize this possibility, periodically wipe the
connectors with a cotton swab or cloth moistened with
alcohol, being careful not to damage the connectors.

Moisture condensation

Moisture may condense on the lens inside the unit in
the following cases:

• After starting the heater in the car.

• If it becomes very humid inside the car.

Should this occur, the unit may malfunction. In this
case, eject the disc and leave the unit turned on for a
few hours until the moisture has evaporated.

How to handle discs
When removing a disc from its Center holder
case, press down the center holder
of the case and lift the disc out,
holding it by the edges.

• Always hold the disc by the edges. Do not touch its
recording surface.

When storing a disc in its case, gently insert the
disc around the center holder (with the printed surface
facing up).

• Make sure to store discs in cases after use.

To keep discs clean

A dirty disc may not play correctly.

If a disc does become dirty, wipe it with
a soft cloth in a straight line from center
to edge.

• Do not use any solvents (for example, conventional
record cleaner, spray, thinner, benzine, etc.) to clean
discs.

To play new discs

New discs may have some rough spots
around the inner and outer edges. If
such a disc is used, this unit may reject
the disc.

To remove these rough spots, rub the edges with a
pencil or bail-point pen, etc.

More about this unit

Basic operations

Turning on the power

• By pressing SRC or AUX on the unit, you can also turn
on the power. If the source is ready, playback also
starts.

Turning off the power

• If you turn off the power while listening to a disc,
disc play will start from where it had been stopped
previously next time you turn on the power.

Tuner operations

Storing stations in memory

• During SSM search...

- All previously stored stations are erased and the
stations are stored anew.

- Received stations are preset in No. 1 (lowest
frequency) to No. 6 (highest frequency).

- When SSM is over, the station stored in No. 1 will
be automatically tuned in.

• When storing a station manually, the previously
preset station is erased when a new station is stored
in the same preset number.

Disc operations

Caution for DualDisc playback

• The Non-DVD side of a "DualDisc" does not comply
with the "Compact Disc Digital Audio" standard.
Therefore, the use of Non-DVD side of a DualDisc on
this product may not be recommended.

General

• This unit has been designed to reproduce
CDs/CD Texts, and CD-Rs (Recordable)/CD-RWs
(Rewritable) in audio CD (CD-DA), MP3 and WMA
formats.

• MP3 and WMA "tracks" (words "file" and "track" are
used interchangeably) are recorded in "folders."

• When a disc is inserted upside down, "PLEASE" and
"EJECT appear alternately on the display. Press ± to
eject the disc.

• While fast-forwarding or reversing on an MP3 or
WMA disc, you can only hear intermittent sounds.

Playing a CD-R or CD-RW

• Use only "finalized" CD-Rs or CD-RWs.

• This unit can only play back files of the same type as
those which are detected first if a disc includes both
audio CD (CD-DA) files and MP3/WMA files.

• This unit can play back multi-session discs; however,
unclosed sessions will be skipped while playing.

• Some CD-Rs or CD-RWs may not be played back on
this unit because of their disc characteristics, or for
the following reasons:

- Discs are dirty or scratched.

- Moisture condensation has occurred on the lens
inside the unit.

- The pickup lens inside the unit is dirty.

- The files on the CD-R/CD-RW are written using the
"Packet Write" method.

- There are improper recording conditions (missing
data, etc.) or media conditions (stained, scratched,
warped, etc.).

• CD-RWs may require a longer readout time since the
reflectance of CD-RWs is lower than that of regular
CDs.

• Do not use the following CD-Rs or CD-RWs:

- Discs with stickers, labels, or protective seal stuck
to the surface.

- Discs on which labels can be directly printed by an
inkjet printer.

Using these discs under high temperature or high
humidity may cause malfunctions or damage to the
unit.

Playing an MP3/WMA disc

• This unit can play back MP3/WMA files with the
extension code <.mp3> or <.wma> (regardless of
the letter case—upper/lower).

• This unit can show the names of albums, artists
(performer), and Tag (Version 1.0,1.1,2.2,2.3, or
2.4) for MP3 files and for WMA files.

• This unit can display only one-byte characters. No
other characters can be correctly displayed.

• This unit can play back MP3/WMA files meeting the
conditions below:

- Bit rate: 8 kbps — 320 kbps

- Sampling frequency:

48 kHz, 44.1 kHz, 32 kHz (for MPEG-1)

24 kHz, 22.05 kHz, 16 kHz (for MPEG-2)

12 kHz, 11.025 kHz, 8 kHz (for MPEG-2.5)

- Disc format: ISO 9660 Level 1/ Level 2, Romeo,
Joliet, Windows long file name

- Bit rate of WMA: 16 kbps — 32 kbps

(Sampling frequency: 22.05 kHz)
32 kbps — 320 kbps
(Sampling frequency: 48 kHz,
44.1 kHz, 32 kHz)

• The maximum number of characters for file/folder
names vary depending on the disc format used
(includes 4 extension characters—<.mp3> or
<.wma>).

- ISO 9660 Level 1: up to 12 characters

- ISO 9660 Level 2: up to 31 characters

- Romeo: up to 128 characters
-Joliet: up to 64 characters

- Windows long file name: up to 128 characters

• This unit can recognize a total of 512 files, 255
folders, and 8 hierarchical levels.

• This unit can play back files recorded in VBR (variable
bit rate).

Files recorded in VBR have a discrepancy in the
elapsed time display, and do not show the actual
elapsed time. In particular, this difference becomes
noticeable after performing the search function.

• This unit cannot play back the following files:

- MP3 files encoded in MP3i and MP3 PRO format.

- MP3 files encoded in an inappropriate format.

- MP3 files encoded with Layer 1/2.

- WMA files encoded in lossless, professional, and
voice format.

- WMA files not based on Windows Media® Audio.

- WMA files copy-protected with DRM.

- Files which have data such as WAVE, ATRAC3, etc.

• The search function works but search speed is not
constant.

Playing MP3/WMA tracks from a USB device

• While playing from a USB device, the playback order
may differ from other players.

• This unit may be unable to play back some USB
devices or some files due to their characteristics or
recording conditions.

• Depending on the shape of the USB devices and
connection ports, some USB devices may not be
attached properly or the connection might be loose.

• Connect one USB mass storage class device to the unit
at a time. Do not use a USB hub.

• If the connected USB device does not have the correct
files, "NO FILE" appears.

• This unit can show Tag (Version 1.0,1.1,2.2,2.3, or
2.4) for MP3 files and for WMA files.

• This unit can play back MP3/WMA files meeting the
conditions below:

- Bit rate of MP3:16 kbps — 320 kbps

- Sampling frequency of MP3:

48 kHz, 44.1 kHz, 32 kHz (for MPEG-1)

24 kHz, 22.05 kHz, 16 kHz (for MPEG-2)

12 kHz, 11.025 kHz, 8 kHz (for MPEG-2.5)

- Bit rate of WMA:

16 kbps — 32 kbps
(Sampling frequency: 22.05 kHz)

32 kbps — 320 kbps

(Sampling frequency: 48 kHz, 44.1 kHz, 32 kHz)

• This unit can play back MP3 files recorded in VBR
(variable bit rate).

Continued on the next page

• The maximum number of characters for:

- Folder names: 25 characters

- File names: 25 characters

- MP3 Tag: 128 characters

- WMA Tag: 64 characters

• This unit can recognize a total of 2 500 files, 255
folders (999 files per folder), and of 8 hierarchies.

• This unit does not support SD card reader.

• This unit cannot recognize a USB device whose rating
is other than 5 V and exceeds 500 mA.

• USB devices equipped with special functions such as
data security functions cannot be used with the unit.

• Do not use a USB device with 2 or more partitions.

• This unit may not recognized a USB device connected
through a USB card reader.

• This unit may not play back files in a USB device
properly when using a USB extension cord.

• This unit cannot play back the following files:

- MP3 files encoded with MP3i and MP3 PRO format.

- MP3 files encoded in an inappropriate format.

- MP3 files encoded with Layer 1/2.

- WMA files encoded in lossless, professional, and
voice format.

- WMA files not based on Windows Media® Audio.

Changing the source

• If you change the source, playback also stops.

Next time you select the same source again, playback
starts from where it has been stopped previously.

Ejecting a disc or removing a USB device

• If the ejected disc is not removed within 15 seconds,
it is automatically inserted into the loading slot again
to protect it from dust.

• After ejecting a disc or removing a USB device,

"NO DISC" or "NO USB" appears and you cannot
operate some of the buttons. Insert another disc,
reattach a USB device, or press SRC to select another
playback source.

General settings—PSM

• "AUTO" setting for "DIMMER" may not work correctly
on some vehicles, particularly on those having a
control dial for dimming.

In this case, change the "DIMMER" setting to any
other than "AUTO."

• If you change the "AMP GAIN" setting from
"HIGH POWER" to "LOW POWER" while the
volume level is set higher than "VOLUME 30," the
unit automatically changes the volume level to
"VOLUME 30."

Title assignment

• If you try to assign titles to more than 30 station
frequencies, "NAMEFULL" appears. Delete unwanted
titles before assignment.

MP3/WMA playback Disc playback FM/AM General

What appears to be trouble is not always serious. Check the following points before calling a service center.

Symptoms Remedies/Causes

• Sound cannot be heard from the speakers.

• Adjust the volume to the optimum level.

• Check the cords and connections.

• The unit does not work at all.

Reset the unit (see page 2).

• SSM automatic presetting does not work.

Store stations manually.

• Static noise while listening to the radio.

Connect the antenna firmly.

• Disc cannot be played back.

Insert the disc correctly.

• CD-R/CD-RW cannot be played back.

• Tracks on the CD-R/CD-RW cannot be
skipped.

• Insert a finalized CD-R/CD-RW.

• Finalize the CD-R/CD-RW with the component which you
used for recording.

• Disc can neither be played back nor ejected.

• Unlock the disc (see page 10).

• Eject the disc forcibly (see page 2).

• Disc sound is sometimes interrupted.

• Stop playback while driving on rough roads.

• Change the disc.

• Check the cords and connections.

• "NO DISC" appears on the display.

• "PLEASE" and "EJECT" appear alternately on
the display.

Insert a playable disc into the loading slot.

• Disc cannot be played back.

• Use a disc with MP3/WMA tracks recorded in a format
compliant with ISO 9660 Level 1, Level 2, Romeo, or
Joliet.

• Add the extension code <.mp3> or <.wma> to the file
names.

• Noise is generated.

Skip to another track or change the disc. (Do not add the
extension code <.mp3> or <.wma> to non-MP3 or WMA
tracks.)

• A longer readout time is required
("READING" keeps flashing on the display).

Do not use too many hierarchical levels and folders.

Continued on the next page

ENGLISH

Symptoms

Remedies/Causes

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• Tracks are not played back in the order you
have intended.

The playback order is determined when the files are
recorded.

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• The elapsed playing time is not correct.

This sometimes occurs during playback. This is caused by
how the tracks are recorded on the disc.

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• The correct characters are not displayed (e.g.
album name).

This unit can only display alphabets (upper case),
numbers, and a limited number of symbols.

• Noise is generated.

The track played back is not an MP3/WMA track. Skip to
another file. (Do not add the extension code <.mp3> or
<.wma> to non-MP3 or WMA tracks.)

• "READING" keeps flashing on the display.

• Readout time varies depending on the USB device.

• Do not use too many hierarchy, folders, and empty
folders*.

• Turn off the power then on again.

• Reattach the USB device again.

• Folder that is physically empty or folder that contains
data but does not contain valid MP3/WMA track.

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• Tracks/folders are not played back in the
order you have intended.

The playback order is determined by the write-in time
stamp. The first track/folder written into the USB device
will be the first track/folder for playback.

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• "NO FILE" flashes on the display.

• "NO USB" appears on the display.

• The unit cannot detect the USB device.

• Attach a USB device that contains tracks encoded in an
appropriate format.

• Reattach the USB device again.

• "READ" and "FAILED" appear alternately on
the display.

The total number of tracks could not be accessed properly.

• Correct characters are not displayed (e.g.
album name).

This unit can only display alphabets (upper case),
numbers, and a limited number of symbols.

• While playing a track, sound is sometimes
interrupted.

The MP3/WMA tracks have not been properly copied into
the USB device.

Copy MP3/WMA tracks again into the USB device, and try
again.

Microsoft and Windows Media are either registered trademarks or trademarks of Microsoft Corporation in the United
States and/or other countries.

Specifications

AUDIO AMPLIFIER SECTION

Maximum Power Output:

Front/Rear:

50 W per channel

Continuous Power Output (RMS):

Front/Rear:

19 W per channel into 4 Q,

40 Hz to 20 000 Hz at no more
than 0.8% total harmonic
distortion.

Load Impedance:

4 Q (4 Q to 8 Q allowance)

Tone Control Range:

Bass:

±12 dB at 60 Hz

Mid-range:

±12 dB at 1 kHz

Treble:

±12 dB at 10 kHz

Frequency Response:

40 Hz to 20 000 Hz

Signal-to-Noise Ratio:

70 dB

Line-Out Level/
Impedance:

2.5 V/20 kQ load (full scale)

Output Impedance:

1 kQ

Subwoofer-Out Level/
Impedance:

2.5 V/20 kQ load (full scale)

Other Terminal:

AUX (auxiliary) input jack, USB
input jack

TUNER SECTION

Frequency Range:

FM:

87.5 MHz to 108.0 MHz

AM:

531 kHz to 1 602 kHz

FM Tuner

Usable Sensitivity:

11.3 dBf (1.0 mV/75 Q)

50 dB Quieting
Sensitivity:

16.3 dBf (1.8 |iW75Q)

Alternate Channel
Selectivity (400 kHz):

65 dB

Frequency Response:

40 Hz to 15 000 Hz

Stereo Separation:

30 dB

AM Tuner

Sensitivity/Selectivity:

20 |iV/35 dB

CD PLAYER SECTION

Type:

Compact disc player

Signal Detection
System:

Non-contact optical pickup
(semiconductor laser)

Number of Channels:

2 channels (stereo)

Frequency Response:

5 Hz to 20 000 Hz

Dynamic Range:

96 dB

Signal-to-Noise Ratio:

98 dB

Wow and Flutter:

Less than measurable limit

MP3 Decoding Format: (MPEG1/2 Audio Layer 3)

Max. Bit Rate:

320 kbps

WMA (Windows Media c

Audio) Decoding Format:

Max. Bit Rate:

320 kbps

USB SECTION

USB Standard:

USB 1.1, USB 2.0

Data Transfer Rate
(Full Speed):

Max. 12 Mbps

Storage:

Less than 8 GB (1 partition type)

Compatible Device:

Mass storage class (except HDD)

Compatible File System:

FAT 32/16/12

Playable Audio Format:

MP3/WMA

Max. Current:

500 mA

GENERAL

Power Requirement:

Operating Voltage:

DC 14.4 V

(11 Vto 16 V allowance)

Grounding System:

Negative ground

Allowable Operating
Temperature:

0°C to +40°C

Dimensions (W x H x D): (approx.)

Installation Size:

182 mm x 52 mm x 160 mm

Panel Size:

188 mm x 58 mm x 6 mm

Mass:

1.3 kg (excluding accessories)

Design and specifications are subject to change without
notice.

ENGLISH

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Having TROUBLE with operation?
Please reset your unit

Refer to page of How to reset your unit

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JVC

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© 2007 Victor Company of Japan, Limited

1007DTSMDTJEIN

JVC

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KD-G646/KD-G645

Installation/Connection Manual

ENGLISH

This unit is designed to operate on 12 V DC, NEGATIVE ground electrical systems. If your vehicle does
not have this system, a voltage inverter is required, which can be purchased at JVC car audio dealers.

WARNINGS

To prevent short circuits, we recommend that you disconnect the battery’s negative terminal and make all
electrical connections before installing the unit.

• Be sure to ground this unit to the car's chassis again after installation.

Notes:

• Replace the fuse with one of the specified rating. If the fuse blows frequently, consult your JVC car audio
dealer.

• It is recommended to connect speakers with a maximum power of more than 50 W (both at the rear and
at the front, with an impedance of 4 O to 8 O). If the maximum power is less than 50 W, change “AMP
GAIN” setting to prevent the speakers from being damaged (see page 13 of the INSTRUCTIONS).

• To prevent short circuits, cover the terminals of the UNUSED leads with insulating tape.

• The heat sink becomes very hot after use. Be careful not to touch it when removing this unit.

1007DTSMDTJEIN

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© 2007 Victor Company of Japan, Limited

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PRECAUTIONS on power supply and speaker connections:

• DO NOT connect the speaker leads of the power cord to the car battery; otherwise, the unit
will be seriously damaged.

• BEFORE connecting the speaker leads of the power cord to the speakers, check the speaker wiring in
your car.

1

INSTALLATION (IN-DASH MOUNTING)

The following illustration shows a typical installation. If you have any questions or require information
regarding installation kits, consult your JVC car audio dealer or a company supplying kits.

• If you are not sure how to install this unit correctly, have it installed by a qualified technician.

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Bend the appropriate tabs to hold the
sleeve firmly in place.

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Removing the unit

Before removing the unit, release the rear section.

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Insert the two handles, then pull them as
illustrated so that the unit can be removed.

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* 1 When you stand the unit, be careful not to damage the fuse on the rear.
* 2 Not supplied for this unit.

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ENGLISH

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ELECTRICAL CONNECTIONS ttSSilfg

Not supplied for this unit.

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* 2 Before checking the operation of this unit prior to installation, this lead must be connected, otherwise the power

cannot be turned on.

3

Connecting the external amplifiers and/or subwoofer / / EiSjSffift

You can connect amplifiers to upgrade your car stereo system.

• Connect the remote lead (blue with white stripe) to the remote lead of the other equipment so that it
can be controlled through this unit.

• Disconnect the speakers from this unit, connect them to the amplifier. Leave the speaker
leads of this unit unused.

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Set "L/0 MODE" to "SUB.W" (See
page 13 of the INSTRUCTIONS.)
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You can also connect a subwoofer to
the REAR LINE OUT terminals.

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Front speakers

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Y-connector (not supplied for this unit)

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Set "L/0 MODE" to "REAR" (See page
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Remote lead (blue with white stripe)

To the remote lead of other
equipment or automatic
antenna if any

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KD-G645

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* 3 Remote lead

* 4 Firmly attach the ground wire to the metallic body or to the chassis of the car—to the place uncoated with paint
(if coated with paint, remove the paint before attaching the wire). Failure to do so may cause damage to the unit.
* 5 Signal cord (not supplied for this unit)

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TROUBLESHOOTING

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The fuse blows.

Are the red and black leads connected correctly?

Power cannot be turned on.

Is the yellow lead connected?

No sound from the speakers.

Is the speaker output lead short-circuited?

Sound is distorted.

Is the speaker output lead grounded?

Are the terminals of L and R speakers grounded in common?

Noise interfere with sounds.

Is the rear ground terminal connected to the car’s chassis using shorter and thicker cords?

This unit becomes hot.

Is the speaker output lead grounded?

Are the terminals of L and R speakers grounded in common?

This unit does not work at all.

Have you reset your unit?

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