JVC KD-G844UI, KD-PDR80J, KD-PDR61EY, KD-G845U, KD-G845UN Service Manual

SERVICE MANUAL

CD RECEIVER

MA392<Rev.002>20087SERVICE MANUAL

KD-APD89J, KD-PDR80J, KD-PDR61E,

KD-PDR61EX, KD-PDR61EY, KD-G844UI,

KD-G845U, KD-G845UN, KD-G845UT,

KD-G845UH, KD-G847EE, KD-PDR89UR,

KD-PDR62E, KD-PDR62EX, KD-PDR62EY

COPYRIGHT © 2008 Victor Company of Japan, Limited

Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)
Lead free solder used in the board (material : Sn-Cu, melting point : 230 Centigrade)

1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31

COPYRIGHT © 2008 Victor Company of Japan, Limited

(KD-APD89)
(KD-PDR80)

(KD-PDR89)

(KD-APD89)
(KD-PDR80)

(KD-PDR89)

TABLE OF CONTENTS

(KD-APD89)
(KD-PDR80)

(KD-PDR89)

(KD-PDR61)

(KD-G847)

(KD-PDR62)

No.MA392<Rev.002>

2008/7

SPECIFICATION

KD-APD89/KD-PDR80/KD-PDR89

AUDIO AMPLIFIER SECTION

Power Output 20 W RMS × 4 Channels at 4 Ω and < or = 1% THD+N
Signal-to-Noise Ratio 80 dBA (reference: 1 W into 4 Ω)
Load Impedance 4 Ω (4 Ω to 8 Ω allowance)

Tone Control Range Bass ±12 dB (60 Hz, 80 Hz, 100 Hz, 200 Hz)

Mid-range ±12 dB (500 Hz, 1.0 kHz, 1.5 kHz, 2.5 kHz)
Treble ±12 dB (10.0 kHz, 12.5 kHz, 15.0 kHz, 17.5 kHz)

Frequency Response 40 Hz to 20 000 Hz

Line-Out Level/Impedance KD-APD89 5.0 V/20 kΩ load (full scale)

KD-PDR80 2.5 V/20 kΩ load (full scale)

Subwoofer-Out Level/Impedance

Output Impedance 1 kΩ

Other Terminal

Frequency Range FM

FM Tuner Usable Sensitivity 11.3 dBf (1.0 µV/75 Ω)

AM Tuner Sensitivity 20 µV

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® Audio) Decoding Format Max. Bit Rate: 192 kbps

USB Standards USB 1.1, USB 2.0
Data Transfer Rate Full Speed Maximum 12 Mbps

Compatible Device Mass storage class
Compatible File System FAT 32/16/12
Playable Audio Format MP3/WMA/WAV
Max. Current 500 mA/5 V

Power Requirement Operating Voltage DC 14.4 V (11 V to 16 V allowance)
Grounding System Negative ground

Allowable Operating Temperature 0°C to +40°C (32°F to 104°F)
Dimensions (W × H × D):

(approx.)

Mass 1.4 kg (3.1 lbs) (excluding accessories)

Design and specifications are subject to change without notice.

KD-APD89 5.0 V /20 kΩ load (full scale)
KD-PDR80 2.5 V/20 kΩ load (full scale)

CD changer jack, AUX (auxiliary) input jack, USB input jack, Steer­ing wheel remote input (only for KD-APD89), Antenna input

TUNER SECTION

with channel interval set to 100 kHz or 200 kHz: 87.5 MHz to 107.9 MHz
with channel interval set to 50 kHz: 87.5 MHz to 108.0 MHz

AM with channel interval set to 10 kHz: 530 kHz to 1 710 kHz

with channel interval set to 9 kHz: 531 kHz to 1 602 kHz

50 dB Quieting Sensitivity 16.3 dBf (1.8 µV/75 Ω)

Alternate Channel Selectivity (400 kHz) 65 dB
Frequency Response 40 Hz to 15 000 Hz
Stereo Separation 35 dB

Selectivity 35 dB

CD PLAYER SECTION

USB SECTION

Low Speed Maximum 1.5 Mbps

GENERAL

Installation Size 182 mm × 52 mm × 160 mm (7-3/16” × 2-1/16” × 6-5/16”)
Panel Size 188 mm × 58 mm × 6 mm (7-7/16” × 2-5/16” × 1/4”)

1-2 (No.MA392<Rev.002>)

KD-PDR61/KD-PDR62

AUDIO AMPLIFIER SECTION

Maximum Power Output Front/Rear 50 W per channel

Continuous Power Output (RMS) Front/Rear 19 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no

more than 0.8% total harmonic distortion

Load Impedance 4 Ω (4 Ω to 8 Ω allowance)

Tone Control Range Bass ±12 dB (60 Hz, 80 Hz, 100 Hz, 200 Hz)

Mid-range ±12 dB (500 Hz, 1.0 kHz, 1.5 kHz, 2.5 kHz)

Treble ±12 dB (10.0 kHz, 12.5 kHz, 15.0 kHz, 17.5 kHz)

Frequency Response 40 Hz to 20 000 Hz

Signal to Noise Ratio 70 dB

Audio Output Level Line-Out Level/Impedance 2.5 V/20 kΩ load (full scale)

Output Impedance 1 kΩ

Subwoofer-Out Level/Impedance

2.5 V /20 kΩ load (full scale)

Other Terminals CD changer jack, AUX (auxiliary) input jack, USB input

jack, Aerial input, Steering wheel remote input

TUNER SECTION

Frequency Range FM 87.5 MHz to 108.0 MHz

AM MW: 522 kHz to 1 620 kHz

LW: 144 kHz to 279 kHz

FM Tuner Usable Sensitivity 11.3 dBf (1.0 µV/75 Ω)

50 dB Quieting Sensitivity 16.3 dBf (1.8 µV/75 Ω)

Alternate Channel Selectivity (400 kHz)

65 dB

Frequency Response 40 Hz to 15 000 Hz

Stereo Separation 30 dB

MW Tuner Sensitivity/Selectivity 20 µV/35 dB
LW Tuner Sensitivity 50 µV

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)

WMA (Windows Media® Audio) Decoding Format

Max. Bit Rate 320 kbps

Max. Bit Rate 320 kbps

USB SECTION

USB Standard USB 1.1, USB 2.0

Data Transfer Rate (Full Speed) Full Speed Max. 12 Mbps

Low Speed Max. 1.5 Mbps

Compatible Device Mass storage class

Compatible File System FAT 32/16/12

Playable Audio Format MP3/WMA/WAV

Max. Current 500 mA/5V

GENERAL

Power Requirement Operating Voltage DC 14.4 V (11 V to 16 V allowance)

Grounding System Negative ground

Allowable Operating Temperature 0°C to +40°C
Dimensions (W × H × D) Installation Size (approx.) 182 mm × 52 mm × 160 mm

Panel Size (approx.) 188 mm × 58 mm × 12 mm

Mass (approx.) 1.4 kg (excluding accessories)

Design and specifications are subject to change without notice.

(No.MA392<Rev.002>)1-3

KD-G844

AUDIO AMPLIFIER SECTION

Maximum Power Output Front/Rear 50 W per channel

Continuous Power Output (RMS) Front/Rear 19 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no

more than 0.8% total harmonic distortion.

Load Impedance 4 Ω (4 Ω to 8 Ω allowance)

Tone Control Range Bass ±12 dB (60 Hz, 80 Hz, 100 Hz, 200 Hz)

Mid-range ±12 dB (500 Hz, 1.0 kHz, 1.5 kHz, 2.5 kHz)

Treble ±12 dB (10.0 kHz, 12.5 kHz, 15.0 kHz, 17.5 kHz)

Frequency Response 40 Hz to 20 000 Hz

Signal-to-Noise Ratio 70 dB

Line-Out and Subwoofer-Out Level/Impedance 2.5 V/20 kΩ load (full scale)
Output Impedance 1 kΩ

Other Terminal CD changer jack, AUX (auxiliary) input jack, USB input

jack, Antenna input

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 µV/75 Ω)

50 dB Quieting Sensitivity 16.3 dBf (1.8 µV/75 Ω)

Alternate Channel Selectivity (400 kHz)

65 dB

Frequency Response 40 Hz to 15 000 Hz

Stereo Separation 30 dB

AM Tuner Sensitivity/Selectivity 20 µV/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)

WMA (Windows Media® Audio) Decoding Format

Max. Bit Rate 320 kbps

Max. Bit Rate 192 kbps

USB SECTION

USB Standard USB 1.1, USB 2.0

Data Transfer Rate Full Speed: Max. 12 Mbps

Low Speed: Max. 1.5 Mbps

Compatible Device Mass storage class

Compatible File System FAT 32/16/12

Playable Audio Format MP3/WMA/WAV

Max. Current 500 mA/5 V

GENERAL

Power Requirement Operating Voltage DC 14.4 V (11 V to 16 V allowance)

Grounding System Negative ground

Allowable Operating Temperature 0°C to +40°C
Dimensions (W × H × D): (approx.) Installation Size 182 mm × 52 mm × 160 mm

Panel Size 188 mm × 58 mm × 6 mm

Mass 1.4 kg (excluding accessories)

Design and specifications are subject to change without notice.

1-4 (No.MA392<Rev.002>)

KD-G845

AUDIO AMPLIFIER SECTION

Maximum Power Output Front/Rear 50 W per channel

Continuous Power Output (RMS) Front/Rear 19 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no

more than 0.8% total harmonic distortion.

Load Impedance 4 Ω (4 Ω to 8 Ω allowance)

Tone Control Range Bass ±12 dB (60 Hz, 80 Hz, 100 Hz, 200 Hz)

Mid-range ±12 dB (500 Hz, 1.0 kHz, 1.5 kHz, 2.5 kHz)

Treble ±12 dB (10.0 kHz, 12.5 kHz, 15.0 kHz, 17.5 kHz)

Frequency Response 40 Hz to 20 000 Hz

Signal-to-Noise Ratio 70 dB

Line-Out and Subwoofer-Out Level/Impedance 2.5 V/20 kΩ load (full scale)
Output Impedance 1 kΩ

Other Terminal CD changer jack, AUX (auxiliary) input jack, USB input

jack, Antenna input

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 µV/75 Ω)

50 dB Quieting Sensitivity 16.3 dBf (1.8 µV/75 Ω)

Alternate Channel Selectivity (400 kHz)

65 dB

Frequency Response 40 Hz to 15 000 Hz

Stereo Separation 30 dB

AM Tuner Sensitivity/Selectivity 20 µV/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)

WMA (Windows Media® Audio) Decoding Format

Max. Bit Rate 320 kbps

Max. Bit Rate 192 kbps

USB SECTION

USB Standard USB 1.1, USB 2.0

Data Transfer Rate Full Speed: Max. 12 Mbps

Low Speed: Max. 1.5 Mbps

Compatible Device Mass storage class

Compatible File System FAT 32/16/12

Playable Audio Format MP3/WMA/WAV

Max. Current 500 mA/5 V

GENERAL

Power Requirement Operating Voltage DC 14.4 V (11 V to 16 V allowance)

Grounding System

Allowable Operating Temperature

0°C to +40°C

Dimensions (W × H × D): (approx.) Installation Size 182 mm × 52 mm × 160 mm

Panel Size 188 mm × 58 mm × 6 mm

Mass 1.4 kg (excluding accessories)

Design and specifications are subject to change without notice.

(No.MA392<Rev.002>)1-5

KD-G847

AUDIO AMPLIFIER SECTION

Maximum Power Output Front/Rear 50 W per channel

Continuous Power Output (RMS) Front/Rear 19 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no

more than 0.8% total harmonic distortion

Load Impedance 4 Ω (4 Ω to 8 Ω allowance)

Tone Control Range Bass ±12 dB (60 Hz, 80 Hz, 100 Hz, 200 Hz)

Mid-range ±12 dB (500 Hz, 1.0 kHz, 1.5 kHz, 2.5 kHz)

Treble ±12 dB (10.0 kHz, 12.5 kHz, 15.0 kHz, 17.5 kHz)
Frequency Response 40 Hz to 20 000 Hz
Signal to Noise Ratio 70 dB

Audio Output Level Line-Out Level/Impedance 2.5 V/20 kΩ load (full scale)

Output Impedance 1 kΩ

Subwoofer-Out Level/Impedance

2.5 V /20 kΩ load (full scale)

Other Terminals CD changer jack, AUX (auxiliary) input jack, USB input

jack, Aerial input

TUNER SECTION

Frequency Range FM1/FM2 87.5 MHz to 108.0 MHz

FM3 65.00 MHz to 74.00 MHZ

AM MW: 522 kHz to 1 620 kHz

LW: 144 kHz to 279 kHz

FM Tuner Usable Sensitivity 11.3 dBf (1.0 µV/75 Ω)

50 dB Quieting Sensitivity 16.3 dBf (1.8 µV/75 Ω)

Alternate Channel Selectivity (400 kHz)

65 dB
Frequency Response 40 Hz to 15 000 Hz
Stereo Separation 30 dB

MW Tuner Sensitivity/Selectivity 20 µV/35 dB
LW Tuner Sensitivity 50 µV

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)
WMA (Windows Media® Audio) Decoding Format

Max. Bit Rate 320 kbps
Max. Bit Rate 320 kbps

USB SECTION

USB Standard USB 1.1, USB 2.0
Data Transfer Rate (Full Speed) Full Speed Max. 12 Mbps

Low Speed Max. 1.5 Mbps

Compatible Device Mass storage class
Compatible File System FAT 32/16/12
Playable Audio Format MP3/WMA/WAV
Max. Current 500 mA/5V

GENERAL

Power Requirement Operating Voltage DC 14.4 V (11 V to 16 V allowance)
Grounding System Negative ground

Allowable Operating Temperature 0°C to +40°C
Dimensions (W × H × D) Installation Size (approx.) 182 mm × 52 mm × 160 mm

Panel Size (approx.) 188 mm × 58 mm × 12 mm

Mass (approx.) 1.4 kg (excluding accessories)

Design and specifications are subject to change without notice.

1-6 (No.MA392<Rev.002>)

1.1 Safety Precautions

SECTION 1

PRECAUTION

!

!

Burrs formed during molding may be left over on some parts of the chassis. Therefore,
pay attention to such burrs in the case of preforming repair of this system.

Please use enough caution not to see the beam directly or touch it in case of an
adjustment or operation check.

(No.MA392<Rev.002>)1-7

1.2 Preventing static electricity

Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser
diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.

1.2.1 Grounding to prevent damage by static electricity

Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as laser products.
Be careful to use proper grounding in the area where repairs are being performed.

(1) Ground the workbench

Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing the
traverse unit (optical pickup) on it.

(2) Ground yourself

Use an anti-static wrist strap to release any static electricity built up in your body.

(caption)
Anti-static wrist strap

1M

Conductive material
(conductive sheet) or iron plate

(3) Handling the optical pickup

• In order to maintain quality during transport and before installation, both sides of the laser diode on the replacement optical
pickup are shorted. After replacement, return the shorted parts to their original condition.
(Refer to the text.)

• Do not use a tester to check the condition of the laser diode in the optical pickup. The tester's internal power source can easily
destroy the laser diode.

1.3 Handling the traverse unit (optical pickup)

(1) Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit.
(2) Cut off the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific details, refer to the

replacement procedure in the text. Remove the anti-static pin when replacing the traverse unit. Be careful not to take too long a

time when attaching it to the connector.
(3) Handle the flexible cable carefully as it may break when subjected to strong force.
(4) It is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it.

1.4 Attention when traverse unit is decomposed

*Please refer to "Disassembly method" in the text for the pickup unit.

• Apply solder to the short land before the card wire is disconnected from the connector on the pickup unit.
(If the card wire is disconnected without applying solder, the pickup may be destroyed by static electricity.)

• In the assembly, be sure to remove solder from the short land after connecting the card wire.

Pickup

Wires

b

B

Push switch

Base board

1-8 (No.MA392<Rev.002>)

e

C

Frame

CD mechanism

d

assembly

Flexible wire

Connector

Pickup

c

1.5 Important for laser products

1.CLASS 1 LASER PRODUCT

2.CAUTION :

(For U.S.A.) Visible and/or invisible class II laser radiation
when open. Do not stare into beam.
(Others) Visible and/or invisible class 1M laser radiation
when open. Do not view directly with optical instruments.

3.CAUTION : Visible and/or invisible laser radiation when
open and inter lock failed or defeated. Avoid direct
exposure to beam.

4.CAUTION : This laser product uses visible and/or invisible
laser radiation and is equipped with safety switches which
prevent emission of radiation when the drawer is open and
the safety interlocks have failed or are defeated. It is
dangerous to defeat the safety switches.

5.CAUTION : If safety switches malfunction, the laser is able
to function.

6.CAUTION : Use of controls, adjustments or performance of
procedures other than those specified here in may result in
hazardous radiation exposure.

!

Please use enough caution not to

see the beam directly or touch it

in case of an adjustment or operation

check.

REPRODUCTION AND POSITION OF LABELS and PRINT

WARNING LABEL and PRINT

(No.MA392<Rev.002>)1-9

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

SECTION 3

DISASSEMBLY

3.1 Main body (Used figure are KD-APD39)

3.1.1 Removing the Bottom chassis (See Fig.1)

(1) Remove the four screws A, two screws B attaching the

heat sink.
(2) Remove the one screw C attaching the Bottom chassis.
(3) Slide to backward, and then take out the Bottom chassis.

AABA

ABC

3.1.2 Removing the Front chassis (See Fig.2, 3)

(1) Remove the two screws D attaching the Front chassis.

(See Fig.2)
(2) Remove the two screws E attaching the both side of Front

chassis. (See Fig.3)
(3) Disengage four hooks a engaged both side of Front chassis.

(See Fig.3)

Fig.1

D

Fig.2

hook a

E

hook a

1-10 (No.MA392<Rev.002>)

Fig.3

3.1.3 Removing the Sub board (See Fig.4)

(1) Disconnect the connector CN741

connector CN701

of the Main board.

of the Sub board from the

Main board

CN701

Sub board

CN741

Fig.4

(No.MA392<Rev.002>)1-11