JVC KDDV-7300-J Service manual

SERVICE MANUAL

DVD/CD RECEIVER

MA31220074SERVICE MANUAL

KD-ADV7380J, KD-DV7300J, KD-DV7301E,

KD-DV7301EU, KD-DV7302E, KD-DV7302EU,

KD-DV7304UI, KD-DV7305U, KD-DV7305UN,

KD-DV7305UT, KD-DV7305A, KD-DV7306U,

KD-DV7306UN, KD-DV7306UT, KD-DV7306A,

KD-DV7307EE, KD-DV7308EE, KD-DV7388UF

KD-DV7301 KD-DV7302 KD-DV7307

KD-ADV7380 KD-DV7300

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)

TABLE OF CONTENTS

1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25

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

KD-ADV7380 KD-DV7300

KD-DV7308

No.MA312

2007/4

SPECIFICATION

KD-ADV7380/KD-DV7300

AUDIO AMPLIFIER SECTION

Power Output 20 W RMS × 4 Channels at 4 Ω and [< or =] 1% THD+N

Ω

Signal to Noise Ratio 80 dBA (reference: 1 W into 4

Ω

Load Impedance 4

Equalizer Control Range Frequencies 60 Hz, 150 Hz, 400 Hz, 1 kHz, 2.5 kHz, 6.3 kHz, 15 kHz

Level ±10 dB

Audio Output Level Digital (DIGITAL OUT: Optical) Signal wave length: 660 nm

Line-Out Level/Impedance KD-ADV7380: 5.0 V/20 k

Output Impedance 1 k

Subwoofer-out Level/Impedance 2.5 V/20 kΩ load (full scale)

Color system NTSC

Video Output (composite) 1 Vp-p/75

Other Terminal CD changer, Steering wheel remote input (for KD-ADV7380), LINE IN, 2nd AU-

TUNER SECTION

Frequency Range FM 87.5 MHz to 107.9 MHz (with channel interval set to 100 kHz or 200 kHz)

AM 530 kHz to 1 710 kHz (with channel interval set to 10 kHz)

FM Tuner Usable Sensitivity 11.3 dBf (1.0

50 dB Quieting Sensitivity 16.3 dBf (1.8

Alternate Channel Selectivity (400 kHz) 65 dB

Frequency Response 40 Hz to 15 000 Hz

Stereo Separation 30 dB

AM Tuner Sensitivity 20

Selectivity 35 dB

DVD/CD PLAYER SECTION

Signal Detection System Non-contact optical pickup (semiconductor laser)

Number of Channels 2 channels (stereo)

Frequency Response DVD, fs=48 kHz/96 kHz 16 Hz to 22 000 Hz

CD, fs=44.1 kHz 16 Hz to 20 000 Hz

Dynamic Range 96 dB

Signal-to-Noise Ratio 98 dB

Wow and Flutter Less than measurable limit

DivX/MPEG Video Video Max. Resolution 720

Audio Bit Rate DivX: 32 kbps - 320 kbps

Sampling Frequency: DivX MPEG-1: 32 kHz, 44.1 kHz, 48 kHz

Sampling Frequency: MPEG Video 32 kHz, 44.1 kHz, 48 kHz

MP3 Bit Rate 32 kbps - 320 kbps

Sampling Frequency MPEG-1: 32 kHz, 44.1 kHz, 48 kHz

WMA Bit Rate 32 kbps - 320 kbps

Sampling Frequency 22.05 kHz, 32 kHz, 44.1 kHz, 48 kHz

AAC Bit Rate 16 kbps - 320 kbps

Sampling Frequency 44.1 kHz, 48 kHz

(4 Ω to 8 Ω allowance)

Output level: -21 dBm to -15 dBm

KD-DV7300: 2.5 V/20 k

Ω

DIO OUT

87.5 MHz to 108.0 MHz (with channel interval set to 50 kHz)

531 kHz to 1 602 kHz (with channel interval set to 9 kHz)

V/75 Ω)

480 pixels (30 fps)

720

576 pixels (25 fps)

MPEG Video: 32 kbps - 320 kbps

MPEG-2: 16 kHz, 22.05 kHz, 24 kHz

)

Ω

load (full scale)

Ω

load (full scale)

1-2 (No.MA312)

WAV Quantization Bit Rate 16 bit

Sampling Frequency 44.1 kHz

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 12/16/32

Playable Audio/Video Format DivX/MPEG Video/MP3/WMA/AAC/WAV

Max. Current 500 mA

GENERAL

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

Grounding System Negative ground

Allowable Operating Temperature 0

Dimensions (W

Mass (approx.) 1.6 kg (3.6 lbs) (excluding accessories)

H × D) Installation Size (approx.) 182 mm × 52 mm × 158 mm (7-3/16" × 2-1/16" × 6-1/4")

Panel Size (approx.) 188 mm

C to +40°C (32°F to 104°F)

58 mm × 12 mm (7-7/16" × 2-5/16" × 1/2")

Design and specifications are subject to change without notice.

KD-DV7302/KD-DV7301

AUDIO AMPLIFIER SECTION

Maximum Power Output Front/Rear 50 W per channel

Ω

Continuous Power Output (RMS) Front/Rear 19 W per channel into 4

monic distortion

Load Impedance 4

Equalizer Control Range Frequencies 60 Hz, 150 Hz, 400 Hz, 1 kHz, 2.5 kHz, 6.3 kHz, 15 kHz

Level ±10 dB

Signal to Noise Ratio 70 dB

Audio Output Level Digital (DIGITAL OUT: Optical) Signal wave length: 660 nm

Line-Out Level/Impedance 2.5 V/20 k

Output Impedance 1 k

Subwoofer-out Level/Impedance 2.5 V/20 kΩ load (full scale)

Ω

(4 Ω to 8 Ω allowance)

Output level: -21 dBm to -15 dBm

Ω

load (full scale)

Ω

, 40 Hz to 20 000 Hz at no more than 0.8% total har-

Color system PAL

V/35 dB

Ω

V/75 Ω)

Video Output (composite) 1 Vp-p/75

Other Terminal CD changer, steering wheel remote input, LINE IN, 2nd AUDIO OUT

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

50 dB Quieting Sensitivity 16.3 dBf (1.8

Alternate Channel Selectivity (400 kHz) 65 dB

Frequency Response 40 Hz to 15 000 Hz

Stereo Separation 30 dB

MW Tuner Sensitivity/Selectivity 20

LW Tuner Sensitivity 50

DVD/CD PLAYER SECTION

Signal Detection System Non-contact optical pickup (semiconductor laser)

Number of Channels 2 channels (stereo)

(No.MA312)1-3

Frequency Response DVD, fs=48 kHz/96 kHz 16 Hz to 22 000 Hz

CD, fs=44.1 kHz 16 Hz to 20 000 Hz

Dynamic Range 96 dB

Signal-to-Noise Ratio 98 dB

Wow and Flutter Less than measurable limit

DivX/MPEG Video Video Max. Resolution 720

Audio Bit Rate DivX: 32 kbps - 320 kbps

Sampling Frequency: DivX MPEG-1: 32 kHz, 44.1 kHz, 48 kHz

Sampling Frequency: MPEG Video 32 kHz, 44.1 kHz, 48 kHz

MP3 Bit Rate 32 kbps - 320 kbps

Sampling Frequency MPEG-2: 16 kHz, 22.05 kHz, 24 kHz

WMA Bit Rate 32 kbps - 320 kbps

Sampling Frequency 22.05 kHz, 32 kHz, 44.1 kHz, 48 kHz

AAC Bit Rate 16 kbps - 320 kbps

Sampling Frequency 44.1 kHz, 48 kHz

WAV Quantization Bit Rate 16 bit

Sampling Frequency 44.1 kHz

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 12/16/32

Playable Audio/Video Format DivX/MPEG Video/MP3/WMA/AAC/WAV

Max. Current 500 mA

GENERAL

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

Grounding System Negative ground

Allowable Operating Temperature 0

Dimensions (W

Mass (approx.) 1.6 kg (excluding accessories)

H × D) Installation Size (approx.) 182 mm × 52 mm × 158 mm

Panel Size (approx.) 188 mm

480 pixels (30 fps)

720

576 pixels (25 fps)

MPEG Video: 32 kbps - 320 kbps

MPEG-2: 16 kHz, 22.05 kHz, 24 kHz

MPEG-1: 32 kHz, 44.1 kHz, 48 kHz

C to +40°C

58 mm × 12 mm

Design and specifications are subject to change without notice.

KD-DV7304

AUDIO AMPLIFIER SECTION

Maximum Power Output Front/Rear 50 W per channel

Ω

Continuous Power Output (RMS) Front/Rear 19 W per channel into 4

Load Impedance 4

Equalizer Control Range Frequencies 60 Hz, 150 Hz, 400 Hz, 1 kHz, 2.5 kHz, 6.3 kHz, 15 kHz

Level ±10 dB

Signal to Noise Ratio 70 dB

Audio Output Level Digital (DIGITAL OUT: Optical) Signal wave length: 660 nm

Line-Out Level/Impedance 2.5 V/20 k

Output Impedance 1 k

Subwoofer-out Level/Impedance 2.5 V/20 kΩ load (full scale)

Color system PAL/NTSC

monic distortion

Ω

(4 Ω to 8 Ω allowance)

Output level: -21 dBm to -15 dBm

Ω

load (full scale)

Ω

, 40 Hz to 20 000 Hz at no more than 0.8% total har-

1-4 (No.MA312)

Video Output (composite) 1 Vp-p/75

Other Terminal CD changer, LINE IN, 2nd AUDIO OUT

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

50 dB Quieting Sensitivity 16.3 dBf (1.8

Alternate Channel Selectivity (400 kHz) 65 dB

Frequency Response 40 Hz to 15 000 Hz

Stereo Separation 30 dB

AM Tuner Sensitivity/Selectivity 20

DVD/CD PLAYER SECTION

Signal Detection System Non-contact optical pickup (semiconductor laser)

Number of Channels 2 channels (stereo)

Frequency Response DVD, fs=48 kHz/96 kHz 16 Hz to 22 000 Hz

CD, fs=44.1 kHz 16 Hz to 20 000 Hz

Dynamic Range 96 dB

Signal-to-Noise Ratio 98 dB

Wow and Flutter Less than measurable limit

DivX/MPEG Video Video Max. Resolution 720

Audio Bit Rate DivX: 32 kbps - 320 kbps

Sampling Frequency: DivX MPEG-1: 32 kHz, 44.1 kHz, 48 kHz

Sampling Frequency: MPEG Video 32 kHz, 44.1 kHz, 48 kHz

MP3 Bit Rate 32 kbps - 320 kbps

Sampling Frequency MPEG-1: 32 kHz, 44.1 kHz, 48 kHz

WMA Bit Rate 32 kbps - 320 kbps

Sampling Frequency 22.05 kHz, 32 kHz, 44.1 kHz, 48 kHz

WAV Quantization Bit Rate 16 bit

Sampling Frequency 44.1 kHz

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 12/16/32

Playable Audio/Video Format DivX/MPEG Video/MP3/WMA/AAC/WAV

Max. Current 500 mA

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

Grounding System Negative ground

Allowable Operating Temperature 0

Dimensions (W

Mass (approx.) 1.6 kg (excluding accessories)

H × D) Installation Size (approx.) 182 mm × 52 mm × 158 mm

Panel Size (approx.) 188 mm

720

MPEG Video: 32 kbps - 320 kbps

MPEG-2: 16 kHz, 22.05 kHz, 24 kHz

USB SECTION

GENERAL

Ω

µ µ

V/35 dB

480 pixels (30 fps)

576 pixels (25 fps)

C to +40°C

58 mm × 12 mm

V/75 Ω)

Design and specifications are subject to change without notice.

(No.MA312)1-5

KD-DV7306/KD-DV7305

AUDIO AMPLIFIER SECTION

Maximum Power Output Front/Rear 50 W per channel

Ω

Continuous Power Output (RMS) Front/Rear 19 W per channel into 4

monic distortion

Load Impedance 4

Equalizer Control Range Frequencies 60 Hz, 150 Hz, 400 Hz, 1 kHz, 2.5 kHz, 6.3 kHz, 15 kHz

Level ±10 dB

Signal to Noise Ratio 70 dB

Audio Output Level Digital (DIGITAL OUT: Optical) Signal wave length: 660 nm

Line-Out Level/Impedance 2.5 V/20 k

Output Impedance 1 k

Subwoofer-out Level/Impedance 2.5 V/20 kΩ load (full scale)

Color system PAL/NTSC

Video Output (composite) 1 Vp-p/75

Other Terminal CD changer, LINE IN, 2nd AUDIO OUT

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

50 dB Quieting Sensitivity 16.3 dBf (1.8

Alternate Channel Selectivity (400 kHz) 65 dB

Frequency Response 40 Hz to 15 000 Hz

Stereo Separation 30 dB

AM Tuner Sensitivity/Selectivity 20

DVD/CD PLAYER SECTION

Signal Detection System Non-contact optical pickup (semiconductor laser)

Number of Channels 2 channels (stereo)

Frequency Response DVD, fs=48 kHz/96 kHz 16 Hz to 22 000 Hz

CD, fs=44.1 kHz 16 Hz to 20 000 Hz

Dynamic Range 96 dB

Signal-to-Noise Ratio 98 dB

Wow and Flutter Less than measurable limit

DivX/MPEG Video Video Max. Resolution 720

Audio Bit Rate DivX: 32 kbps - 320 kbps

Sampling Frequency: DivX MPEG-1: 32 kHz, 44.1 kHz, 48 kHz

Sampling Frequency: MPEG Video 32 kHz, 44.1 kHz, 48 kHz

MP3 Bit Rate 32 kbps - 320 kbps

Sampling Frequency MPEG-1: 32 kHz, 44.1 kHz, 48 kHz

WMA Bit Rate 32 kbps - 320 kbps

Sampling Frequency 22.05 kHz, 32 kHz, 44.1 kHz, 48 kHz

WAV Quantization Bit Rate 16 bit

Sampling Frequency 44.1 kHz

USB SECTION

USB Standard USB 1.1/USB 2.0

Data Transfer Rate Full Speed Max. 12 Mbps

Low Speed Max. 1.5 Mbps

Ω

(4 Ω to 8 Ω allowance)

Output level: -21 dBm to -15 dBm

Ω

load (full scale)

Ω

V/75 Ω)

V/35 dB

480 pixels (30 fps)

720

576 pixels (25 fps)

MPEG Video: 32 kbps - 320 kbps

MPEG-2: 16 kHz, 22.05 kHz, 24 kHz

, 40 Hz to 20 000 Hz at no more than 0.8% total har-

1-6 (No.MA312)

Compatible Device Mass storage class

Compatible File System FAT 12/16/32

Playable Audio/Video Format DivX/MPEG Video/MP3/WMA/WAV

Max. Current 500 mA

GENERAL

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

Grounding System Negative ground

Allowable Operating Temperature 0

Dimensions (W

Mass (approx.) 1.6 kg (excluding accessories)

H × D) Installation Size (approx.) 182 mm × 52 mm × 158 mm

Panel Size (approx.) 188 mm

C to +40°C

58 mm × 12 mm

Design and specifications are subject to change without notice.

KD-DV7308/KD-DV7307

AUDIO AMPLIFIER SECTION

Maximum Power Output Front/Rear 50 W per channel

Ω

Continuous Power Output (RMS) Front/Rear 19 W per channel into 4

monic distortion

Load Impedance 4

Equalizer Control Range Frequencies 60 Hz, 150 Hz, 400 Hz, 1 kHz, 2.5 kHz, 6.3 kHz, 15 kHz

Level ±10 dB

Signal to Noise Ratio 70 dB

Audio Output Level Digital (DIGITAL OUT: Optical) Signal wave length: 660 nm

Line-Out Level/Impedance 2.5 V/20 k

Output Impedance 1 k

Subwoofer-out Level/Impedance 2.5 V/20 kΩ load (full scale)

Color system PAL

Video Output (composite) 1 Vp-p/75

Other Terminal CD changer, LINE IN, 2nd AUDIO OUT

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

FM Tuner Usable Sensitivity 11.3 dBf (1.0

50 dB Quieting Sensitivity 16.3 dBf (1.8

Alternate Channel Selectivity (400 kHz) 65 dB

Frequency Response 40 Hz to 15 000 Hz

Stereo Separation 30 dB

MW Tuner Sensitivity 20

Selectivity 35 dB

LW Tuner Sensitivity 50

DVD/CD PLAYER SECTION

Signal Detection System Non-contact optical pickup (semiconductor laser)

Number of Channels 2 channels (stereo)

Frequency Response DVD, fs=48 kHz/96 kHz 16 Hz to 22 000 Hz

CD, fs=44.1 kHz 16 Hz to 20 000 Hz

Dynamic Range 96 dB

Signal-to-Noise Ratio 98 dB

Wow and Flutter Less than measurable limit

Ω

(4 Ω to 8 Ω allowance)

Output level: -21 dBm to -15 dBm

Ω

load (full scale)

Ω

LW: 144 kHz to 279 kHz

V/75 Ω)

, 40 Hz to 20 000 Hz at no more than 0.8% total har-

(No.MA312)1-7

DivX/MPEG Video Video Max. Resolution 720 × 480 pixels (30 fps)

720

576 pixels (25 fps)

Audio Bit Rate DivX: 32 kbps - 320 kbps

MPEG Video: 32 kbps - 320 kbps

Sampling Frequency: DivX MPEG-1: 32 kHz, 44.1 kHz, 48 kHz

MPEG-2: 16 kHz, 22.05 kHz, 24 kHz

Sampling Frequency: MPEG Video 32 kHz, 44.1 kHz, 48 kHz

MP3 Bit Rate 32 kbps - 320 kbps

Sampling Frequency MPEG-1: 32 kHz, 44.1 kHz, 48 kHz

MPEG-2: 16 kHz, 22.05 kHz, 24 kHz

WMA Bit Rate 32 kbps - 320 kbps

Sampling Frequency 22.05 kHz, 32 kHz, 44.1 kHz, 48 kHz

AAC Bit Rate 16 kbps - 320 kbps

Sampling Frequency 44.1 kHz, 48 kHz

WAV Quantization Bit Rate 16 bit

Sampling Frequency 44.1 kHz

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 12/16/32

Playable Audio/Video Format DivX/MPEG Video/MP3/WMA/AAC/WAV

Max. Current 500 mA

GENERAL

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

Grounding System Negative ground

Allowable Operating Temperature 0

Dimensions (W

Mass (approx.) 1.6 kg (excluding accessories)

H × D) Installation Size (approx.) 182 mm × 52 mm × 158 mm

Panel Size (approx.) 188 mm

C to +40°C

58 mm × 12 mm

Design and specifications are subject to change without notice.

1-8 (No.MA312)

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.MA312)1-9

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

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.

Flexible wire

1-10 (No.MA312)

CN101

Short-circuit points

Mechanism control board

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.MA312)1-11

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

1-12 (No.MA312)

SECTION 3

DISASSEMBLY

3.1 Main body

3.1.1 Removing the BOTTOM CHASSIS (See Fig.1)

(1) Disengage the five hooks a engaged BOTTOM CHASSIS.

3.1.2 Removing the HEAT SINK (See Fig.2)

(1) Remove the four screws A attaching the HEAT SINK.

3.1.3 Removing the FRONT CHASSIS (See Fig.3, 4)

(1) Remove the two screws B attaching the FRONT CHAS-

SIS. (See Fig.3)

(2) Remove the two screws C attaching the both side of

FRONT CHASSIS. (See Fig.4)

(3) Disengage the two hooks b engaged both side of the

FRONT CHASSIS. (See Fig.4)

hook

Fig.1

Fig.2

Fig.3

hook

Fig.4

(No.MA312)1-13

3.1.4 Removing the MAIN BOARD assembly (See Fig.5, 6)

(1) Remove the three screws D attaching the REAR BRACK-

ET. (See Fig.5)

(2) Remove the three screws E attaching the MAIN BOARD

assembly. (See Fig.6)

(3) Disconnect the connector CN501

BOARD assembly and DVD mechanism assembly. (See Fig.6)

connected MAIN

Fig.5

CN501

3.1.5 Removing the DVD mechanism assembly (See Fig.7)

(1) Remove the three screws F attaching the DVD mechanism

assembly.

Fig.6

Fig.7

1-14 (No.MA312)

3.1.6 Removing the REAR COVER

(See Fig.8, 9)

(1) Remove the VOLUME KNOB. (2) Remove the one screw G attaching the REAR COVER.

(See Fig.8)

(3) Remove the four screws H attaching the REAR COVER.

(See Fig.9)

(4) Disengage nine hooks c engaged REAR COVER. (See

Fig.9)

Fig.8

hook

Fig.9

hook

(No.MA312)1-15

3.2 DVD mechanism assembly

3.2.1 Removing the mechanism control board (See Fig.1)

Caution:

Before disconnecting the flexible wire extending from the DVD pickup, solder the short-circuit point on the flexible wire using a grounding soldering iron. If you do not follow this instruction, the DVD pickup may be damaged. (1) Turn over the body, and solder the short-circuit points on

the flexible wire extending from the DVD pickup.

(2) Disconnect the flexible wire from connector CN101

mechanism control board.

(3) Disconnect the card wire from connector CN201

mechanism control board.

(4) Disconnect the flexible wire from connector CN202

mechanism control board.

(5) Unsolder two soldered points a on the mechanism control

board and remove the wire extending from the feed motor. (6) Remove the screw A attaching the lug wire. (7) Remove the two screws B and screw C attaching the

mechanism control board.

Caution:

• As the flexible wire to be connected to CN101

attach it to the mechanism control board using a double tape.

• After reassembling, unsolder the short-circuit points.

on the

, make sure to

Flexible wire

Double tape

CN101

Short-circuit points

Lug wire

CN201

Feed motor

CN202

Mechanism control board

Fig.1

1-16 (No.MA312)

3.2.2 Removing the top cover (See Fig.2)

(1) Remove the two screws D attaching the top cover on the

back of the body.

(2) Remove the top cover upward.

Reference:

When reassembling, set part b of the top cover under the bending part c of the chassis frame.

3.2.3 Removing the mechanism section (See Fig.2 to 4)

• Remove the top cover.

(1) From the bottom of the body, remove the screw E attaching

the lug wire. (See Fig.2.)

(2) Remove the two screws F attaching the right and left stop-

pers on the front side. (See Fig.2.)

(3) Remove the two floating springs on the bottom of the body.

(See Fig.3.)

(4) Move the mechanism section upward and remove from the

chassis frame. The three damper springs come off from the dampers. (See Fig.4.)

Caution:

• When reassembling, reattach the damper spring to the damper respectively and insert the three shafts on the bottom of the mechanism to the dampers.

• Before inserting the shaft to the dampers, apply IPA to the hole of damper.

Floating spring

Fig.3

Mechanism section

Stopper

Top cover

Stopper

Lug wire

Damper SP.(F)

(Silver)

Damper (F) (Black)

Damper SP.(F)

(Silver)

Damper (F) (Black)

Fig.4

Damper SP.(R)

(Red)

Damper (R) (Purple)

Chassis frame

Fig.2

(No.MA312)1-17

3.2.4 Removing the clamper unit (See Fig.5 to 7)

• Remove the top cover and the mechanism section.

(1) Remove the clamper2 spring on the bottom of the mecha-

nism section. (See Figs.5.and 6.)

(2) Release the part d of the clamper spring from the bending

part of the chassis base assembly. (See Fig.7.)

(3) Move the clamper unit in the direction of the arrow and turn.

Release the two joints e and f, then remove the clamper unit upward. (See Fig.6.)

3.2.5 Reattaching the clamper unit (See Fig.5 to 9)

(1) Attach the clamper spring to the clamper unit. (See Fig.8.) (2) Move the clamper unit to set the side joints e and f to each

boss of the chassis base assembly. Make sure that part g is inserted to the notch of the chassis base assembly. (See Figs.5 and 9.)

(3) Move the part d of the clamper spring to the outside of the

bending part of the chassis base assembly. (See Fig.7.)

(4) Attach the clamper2 spring to the chassis base assembly.

(See Figs.5 and 6.)

Caution:

When reattaching, temporarily hook the end of the clamper spring as shown in the figure to make the work easy. (See Fig.8.)

Clamper unit

Clamper2 spring

Chassis base assembly

Fig.6

Clamper spring

Clamper2 spring

Chassis base assembly

Fig.7

Fig.5

1-18 (No.MA312)

Clamper unit

Clamper spring

Fig.8

Fig.9

Notch

(No.MA312)1-19

3.2.6 Removing the front unit (See Fig.10 to 12)

• Remove the top cover and the mechanism section.

(1) Disconnect the flexible wire from connector CN202 on the

mechanism control board at the bottom of the body. (See Fig.10.)

(2) Remove the screw G attaching the front unit on the top of

the body. (See Fig.11.)

(3) Move the front unit toward the front to release joint h, and

release two joints i and j on the right side of the chassis base assembly. Then remove the front unit upward. (See Figs.11 and 12.)

(4) Remove the two screws H attaching the switch board. (See

Fig.12.)

Reference:

You can remove the switch board only without removing the front unit.

Caution:

When reassembling, attach the flexible wire extending from the switch board using the double tape. (See Figs.10 and 12.)

Mechanism control board

Front unit

Fig.11

CN202

Double tape

Fig.10

Flexible wire

Double tape

Switch board

Front unit

1-20 (No.MA312)

Fig.12

3.2.7 Removing the loading arm assembly

(See Fig.13 , 14)

• Remove the top cover, the mechanism section and the front

unit. (1) From the top of the body, move the loading arm assembly

from the front side upward, and release the bosses from the right and left joints k and m of the chassis base assembly.

(2) Release the boss from notch n of the connect arm on the

right side of the body, and release the boss from notch p of the slide cam assembly on the left side.

Loading arm assembly

Side cam

assembly

Fig.13

Loading arm assembly

Connect arm

Fig.14

(No.MA312)1-21

3.2.8 Removing the rod (L)(R)/roller assembly (See Fig.15 and 16)

• Remove the top cover, the mechanism section, the front unit

and the loading arm assembly. (1) Release the rod (L) and (R) from the joints q at the bottom

of the loading arm assembly (See Fig.15.)

(2) Remove the roller assembly from the loading arm assem-

bly. (See Fig.16.)

(3) Remove the two collars and washer from the roller assem-

bly. (See Fig.16.)

Caution:

After attaching the loading arm assembly to the roller assembly, attach the rod (L) and (R). Attach the rods to the right and left collars of the roller. (See Fig.15.) When reattaching the rod (L) and (R) to the loading arm assembly, engage each joint as shown in Fig.15. As joints q of the rod (L), let the rod through q before reattaching it.

Collar

Rod(R) Rod(L)

Collar

Rod(L)

Rod(R)

Loading arm assembly

Fig.15

Roller assembly

Loading arm assembly

Rod(L)

Collar

Washer

Rod(R)

1-22 (No.MA312)

Fig.16

3.2.9 Removing the DVD pickup assembly

(See Fig.17 to 19)

• Remove the mechanism control board.

(1) From the bottom of the body, turn the feed gear in the di-

rection of the arrow to move the DVD pickup outwards. (See Fig.17.)

(2) Remove the screw J attaching the thrust spring. (See

Fig.17.)

(3) Remove the DVD pickup assembly upward on the L.S.gear

side and release from sub shaft at joint r. Move the lead screw of the DVD pickup assembly in the direction of the arrow to release from joint s. (See Fig.18.)

Caution:

• When releasing the lead screw at joint s, the L.S.collar comes off at the end of the lead screw. When reassembling, reattach the L.S.collar to the lead screw and engage joint s. (See Fig.18.)

• When reattaching the L.S.collar, reattach it to the point s of the lead screw, and to the rod (M). Make sure that the L.S.collar is set on the rod (M) spring. (See Fig.18.)

(4) Remove the screw K attaching the rack spring/ rack plate

on the DVD pickup. (See Fig.19.)

(5) Pull out the lead screw. (See Fig.19.)

Caution:

Perform adjustment after replacing the pickup.

DVD Pickup assembly

Feed gear

Thrust spring

Fig.17

L.S.collar

Rod(M)

Lead screw

Sub shaft

L.S.collar

L.S.gear

Fig.18

Rack spring

Lead screw

Rack plate

DVD Pickup

Fig.19

(No.MA312)1-23

3.2.10 Removing the spindle motor

(See Fig.20)

• Remove the mechanism control board. Remove the two screws L attaching the spindle motor on the bottom of the body.

Caution:

Perform adjustment when reattaching the spindle motor.

3.2.11 Removing the feed motor assembly

(See Fig.21 and 22)

• Remove the mechanism control board. (1) Remove the feed TRI. spring on the bottom of the body.

(See Fig.21.)

(2) Remove the two screws M attaching the feed motor as-

sembly. (See Fig.21.)

(3) Remove the slit washer from the motor H. assembly and

pull out the worm wheel. (See Fig.22.) Remove the two screws N attaching the feed motor. (See Fig.22.)

Spindle motor

Feed TRI. spring

Fig.20

Feed motor assembly

1-24 (No.MA312)

Fig.21

Slit washer

Worm wheel

Feed moto

Motor H. assembly

Fig.22

SECTION 4

ADJUSTMENT

4.1 Test instruments required for adjustment

(1) Digital oscilloscope (100MHz) (2) Jitter meter (3) Digital tester (4) Electric voltmeter (5) Tracking offset meter (6) Test Disc : VT501 or VT502 (7) Extension studs : STDV001-3P (8) Extension cable : EXTDV002-30P

4.3 Connection method

Connection procedure

(1) Attach the front chassis assembly to the main board. (2) Connect the front panel assembly to the main board. (3) Attach the heat sink and rear bracket to the main board. (4) Attach the extension studs to the DVD mechanism assembly. (5) Connect the DVD mechanism assembly and the main board with a extension cable.

4.2 Standard measuring conditions

Power supply voltage : DC14.4V(11V to 16V)

Load impedance : 4 Ω (2 Speakers connection) Line output : 20k Ω

Caution:

Be sure to attach the heat sink and rear bracket onto the power amplifier IC and regulator IC respectively, before supply the power. If voltage is applied without attaching these parts, the power amplifier IC and regulator IC will be destroyed by heat.

Extension cable EXTDV002-30P

Extension stud STDV001-3P

(No.MA312)1-25

+ 58 hidden pages