JVC KW-ADV793J User manual

SERVICE MANUAL
COPYRIGHT © 2010 Victor Company of Japan, Limited No.MA473<Rev.002>
2010/6
DVD RECEIVER WITH MONITOR
MA473<Rev.002>20106SERVICE MANUAL
KW-ADV793J, KW-AVX730E, KW-AVX730EE, KW-AVX730J,
KW-AVX735EU, KW-AVX735U, KW-AVX735UN, KW-AVX736A,
KW-AVX736EU, KW-AVX736U, KW-AVX736UN, KW-AVX736UT,
KW-AVX736UW, KW-AVX738JW, KW-AVX830E, KW-AVX830J,
KW-AVX835EU, KW-AVX835U, KW-AVX835UN, KW-AVX836A,
KW-AVX836EU, KW-AVX836U, KW-AVX836UN, KW-AVX836UT,
KW-AVX836UW, KW-AVX838JW, KW-AVX838UF
COPYRIGHT © 2010 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)
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31
Only for KW-AVX830J/
KW-ADV793/KW-AVX730J
Only for E/EU
Except J/JW
Only for J/JW

1-2 (No.MA473<Rev.002>)
SPECIFICATION
* Only for KW-AVX838/KW-AVX830.
Design and specifications are subject to change without notice.
KW-AVX838/KW-AVX830/KW-ADV793/KW-AVX738/KW-AVX730 J/JW
AMPLIFIER
Power Output 20 W RMS ×4 Channels at 4 Ωand < = 1% THD+N
Signal-to-Noise Ratio 80 dBA (reference: 1 W into 4 Ω)
Load Impedance 4 Ω(4 Ωto 8 Ωallowance)
Equalizer Control Range Frequencies Low: 60 Hz, 80 Hz, 100 Hz, 200 Hz
Mid: 500 Hz, 1 kHz, 1.5 kHz, 2.5 kHz
High: 10 kHz, 12.5 kHz, 15 kHz, 17.5 kHz
Level ±12 dB
Audio Output Level
FRONT OUT, REAR OUT, SUBWOOFER OUT
Line-Out Level/Impedance 5 V/20 kΩload (full scale), 2.5 V20 kΩload (full scale) for KW-AVX730
Output Impedance 1 kΩ
Color System NTSC
Video Output (composite) 1 Vp-p/75 Ω
Other Terminals Input LINE IN, VIDEO IN, CAMERA IN, USB input, MIC IN*, Antenna input
Output 2nd AUDIO OUT*
Others Expansion port, OE REMOTE
FM/AM TUNER
Frequency Range FM 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
FM Tuner Usable Sensitivity 9.3 dBf (0.8 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 40 dB
AM Tuner Sensitivity/Selectivity 20 µV/40 dB
DVD/CD
Signal Detection System Non-contact optical pickup (semiconductor laser)
Frequency Response DVD, fs=48 kHz/96 kHz 16 Hz to 22 000 Hz
VCD/CD 16 Hz to 20 000 Hz
Dynamic Range 93 dB
Signal-to-Noise Ratio 95 dB
Wow and Flutter Less than measurable limit
USB
USB Standards USB 2.0 Full Speed
Data Transfer Rate Full Speed Maximum 12 Mbps
Low Speed Maximum 1.5 Mbps
Compatible Device Mass storage class
Compatible File System FAT 32/16/12
Max. Current DC 5 V 500 mA
BLUETOOTH (Only for KW-AVX838/KW-AVX830)
Version Bluetooth 2.0 certified
Output Power +4 dBm Max. (Power class 2)
Service Area Within 10 m (10.9 yd)
Profile HFP (Hands-Free Profile) 1.5
OPP (Object Push Profile) 1.1
A2DP (Advanced Audio Distribution Profile) 1.2
AVRCP (Audio/Video Remote Control Profile) 1.3
MONITOR
Screen Size 7 inch wide liquid crystal display
Number of Pixel 336 960 pixels: 480 ×3 (horizontal) ×234 (vertical)
Drive Method TFT (Thin Film Transistor) active matrix format
Color System NTSC/PAL
Aspect Ratio 16:9 (wide)
GENERAL
Power Requirement Operating Voltage DC 14.4 V (11 V to 16 V allowance)
Grounding System Negative ground
Allowable Storage Temperature -10°C to +60°C (14°F to 140°F)
Allowable Operating Temperature 0°C to +40°C (32°F to 104°F)
Dimensions (W ×H ×D) Installation Size (approx.) 182 mm ×111 mm ×160 mm (7-3/16” ×4-3/8” ×6-5/16”)
Panel Size (approx.) 188 mm ×117 mm ×10 mm (7-7/16” ×4-5/8” ×7/16”)
Mass (approx.) 2.8 kg (6.2 lbs) (including the Trim plate and Sleeve)

(No.MA473<Rev.002>)1-3
* Only for KW-AVX836/KW-AVX835
Design and specifications are subject to change without notice.
KW-AVX836/KW-AVX835/KW-AVX736/KW-AVX735 Europe
AMPLIFIER
Maximum Power Output Front/Rear 50 W per channel
Continuous Power Output (RMS) Front/Rear 20 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 Ωto 8 Ωallowance)
Equalizer Control Range Frequencies Low: 60 Hz, 80 Hz, 100 Hz, 200 Hz
Mid: 500 Hz, 1 kHz, 1.5 kHz, 2.5 kHz
High: 10 kHz, 12.5 kHz, 15 kHz, 17.5 kHz
Level ±12 dB
Signal-to-Noise Ratio 70 dB
Audio Output Level
FRONT OUT, REAR OUT, SUBWOOFER OUT
Line-Out Level/Impedance 5 V/20 kΩload (full scale)
Output Impedance 1 kΩ
Color System NTSC/PAL
Video Output (composite) 1 Vp-p/75 Ω
Other Terminals Input LINE IN, VIDEO IN, USB input, MIC IN*, Aerial input
Output 2nd AUDIO OUT*
Others OE REMOTE, RGB input
FM/AM TUNER
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 9.3 dBf (0.8 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 40 dB
MW Tuner Sensitivity/Selectivity 20 µV/40 dB
LW Tuner Sensitivity 50 µV
DVD/CD
Signal Detection System Non-contact optical pickup (semiconductor laser)
Frequency Response DVD, fs=48 kHz/96 kHz 16 Hz to 22 000 Hz
VCD/CD 16 Hz to 20 000 Hz
Dynamic Range 93 dB
Signal-to-Noise Ratio 95 dB
Wow and Flutter Less than measurable limit
USB
USB Standards USB 2.0 Full Speed
Data Transfer Rate Full Speed Maximum 12 Mbps
Low Speed Maximum 1.5 Mbps
Compatible Device Mass storage class
Compatible File System FAT 32/16/12
Max. Current DC 5 V 500 mA
BLUETOOTH (Only for KW-AVX836/KW-AVX835)
Version Bluetooth 2.0 certified
Output Power +4 dBm Max. (Power class 2)
Service Area Within 10 m
Profile HFP (Hands-Free Profile) 1.5
OPP (Object Push Profile) 1.1
A2DP (Advanced Audio Distribution Profile) 1.2
AVRCP (Audio/Video Remote Control Profile) 1.3
MONITOR
Screen Size 7 inch wide liquid crystal display
Number of Pixel 336 960 pixels: 480 ×3 (horizontal) ×234 (vertical)
Drive Method TFT (Thin Film Transistor) active matrix format
Color System PAL/NTSC
Aspect Ratio 16:9 (wide)
GENERAL
Power Requirement Operating Voltage DC 14.4 V (11 V to 16 V allowance)
Grounding System Negative ground
Allowable Storage Temperature -10°C to +60°C
Allowable Operating Temperature 0°C to +40°C
Dimensions (W ×H ×D) Installation Size (approx.) 182 mm ×111 mm ×160 mm
Panel Size (approx.) 188 mm ×117 mm ×10 mm
Mass (approx.) 2.8 kg (including the Trim plate and Sleeve)

1-4 (No.MA473<Rev.002>)
*1 Only for KW-AVX830. *2 Only for KW-AVX730.
Design and specifications are subject to change without notice.
KW-AVX830/KW-AVX730 Europe
AMPLIFIER
Maximum Power Output Front/Rear 50 W per channel
Continuous Power Output (RMS) Front/Rear 20 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 Ωto 8 Ωallowance)
Equalizer Control Range Frequencies Low: 60 Hz, 80 Hz, 100 Hz, 200 Hz
Mid: 500 Hz, 1 kHz, 1.5 kHz, 2.5 kHz
High: 10 kHz, 12.5 kHz, 15 kHz, 17.5 kHz
Level ±12 dB
Signal-to-Noise Ratio 70 dB
Audio Output Level
FRONT OUT, REAR OUT, SUBWOOFER OUT
Line-Out Level/Impedance 5 V/20 kΩload (full scale)
Output Impedance 1 kΩ
Color System PAL
Video Output (composite) 1 Vp-p/75 Ω
Other Terminals Input LINE IN, VIDEO IN, CAMERA IN*1, USB input, MIC IN*1, Aerial input
Output 2nd AUDIO OUT*1
Others Expansion port*2, OE REMOTE
FM/AM TUNER
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 9.3 dBf (0.8 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 40 dB
MW Tuner Sensitivity/Selectivity 20 µV/40 dB
LW Tuner Sensitivity 50 µV
DVD/CD
Signal Detection System Non-contact optical pickup (semiconductor laser)
Frequency Response DVD, fs=48 kHz/96 kHz 16 Hz to 22 000 Hz
VCD/CD 16 Hz to 20 000 Hz
Dynamic Range 93 dB
Signal-to-Noise Ratio 95 dB
Wow and Flutter Less than measurable limit
USB
USB Standards USB 2.0 Full Speed
Data Transfer Rate Full Speed Maximum 12 Mbps
Low Speed Maximum 1.5 Mbps
Compatible Device Mass storage class
Compatible File System FAT 32/16/12
Max. Current DC 5 V 500 mA
BLUETOOTH (Only for KW-AVX830)
Version Bluetooth 2.0 certified
Output Power +4 dBm Max. (Power class 2)
Service Area Within 10 m
Profile HFP (Hands-Free Profile) 1.5
OPP (Object Push Profile) 1.1
A2DP (Advanced Audio Distribution Profile) 1.2
AVRCP (Audio/Video Remote Control Profile) 1.3
MONITOR
Screen Size 7 inch wide liquid crystal display
Number of Pixel 336 960 pixels: 480 ×3 (horizontal) ×234 (vertical)
Drive Method TFT (Thin Film Transistor) active matrix format
Color System PAL/NTSC
Aspect Ratio 16:9 (wide)
GENERAL
Power Requirement Operating Voltage DC 14.4 V (11 V to 16 V allowance)
Grounding System Negative ground
Allowable Storage Temperature -10°C to +60°C
Allowable Operating Temperature 0°C to +40°C
Dimensions (W ×H ×D) Installation Size (approx.) 182 mm ×111 mm ×160 mm
Panel Size (approx.) 188 mm ×117 mm ×10 mm
Mass (approx.) 2.8 kg (including the Trim plate and Sleeve)

(No.MA473<Rev.002>)1-5
* Only for KW-AVX836/KW-AVX835.
Design and specifications are subject to change without notice.
KW-AVX836/KW-AVX835/KW-AVX736/KW-AVX735 Asia & Oceania
AMPLIFIER
Maximum Power Output Front/Rear 50 W per channel
Continuous Power Output (RMS) Front/Rear 20 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 Ωto 8 Ωallowance)
Equalizer Control Range Frequencies Low: 60 Hz, 80 Hz, 100 Hz, 200 Hz
Mid: 500 Hz, 1 kHz, 1.5 kHz, 2.5 kHz
High: 10 kHz, 12.5 kHz, 15 kHz, 17.5 kHz
Level ±12 dB
Signal-to-Noise Ratio 70 dB
Audio Output Level
FRONT OUT, REAR OUT, SUBWOOFER OUT
Line-Out Level/Impedance 5 V/20 kΩload (full scale)
Output Impedance 1 kΩ
Color System NTSC/PAL
Video Output (composite) 1 Vp-p/75 Ω
Other Terminals Input LINE IN, VIDEO IN, USB input, MIC IN*, Antenna input
Output 2nd AUDIO OUT*
Others OE REMOTE, RGB input
FM/AM TUNER
Frequency Range FM 87.5 MHz to 108.0 MHz
AM 531 kHz to 1 602 kHz
FM Tuner Usable Sensitivity 9.3 dBf (0.8 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 40 dB
AM Tuner Sensitivity/Selectivity 20 µV/40 dB
DVD/CD
Signal Detection System Non-contact optical pickup (semiconductor laser)
Frequency Response DVD, fs=48 kHz/96 kHz 16 Hz to 22 000 Hz
VCD/CD 16 Hz to 20 000 Hz
Dynamic Range 93 dB
Signal-to-Noise Ratio 95 dB
Wow and Flutter Less than measurable limit
USB
USB Standards USB 2.0 Full Speed
Data Transfer Rate Full Speed Maximum 12 Mbps
Low Speed Maximum 1.5 Mbps
Compatible Device Mass storage class
Compatible File System FAT 32/16/12
Max. Current DC 5 V 500 mA
BLUETOOTH (Only for KW-AVX836/KW-AVX835)
Version Bluetooth 2.0 certified
Output Power +4 dBm Max. (Power class 2)
Service Area Within 10 m
Profile HFP (Hands-Free Profile) 1.5
OPP (Object Push Profile) 1.1
A2DP (Advanced Audio Distribution Profile) 1.2
AVRCP (Audio/Video Remote Control Profile) 1.3
Max. Current DC 5 V 54.3 mA
MONITOR
Screen Size 7 inch wide liquid crystal display
Number of Pixel 336 960 pixels: 480 ×3 (horizontal) ×234 (vertical)
Drive Method TFT (Thin Film Transistor) active matrix format
Color System PAL/NTSC
Aspect Ratio 16:9 (wide)
GENERAL
Power Requirement Operating Voltage DC 14.4 V (11 V to 16 V allowance)
Grounding System Negative ground
Allowable Storage Temperature -10°C to +60°C
Allowable Operating Temperature 0°C to +40°C
Dimensions (W ×H ×D) Installation Size (approx.) 180 mm ×100 mm ×160 mm
Panel Size (approx.) 171 mm ×97 mm ×28 mm
Mass (approx.) 2.6 kg

1-6 (No.MA473<Rev.002>)
SECTION 1
PRECAUTION
1.1 Safety Precautions
!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.MA473<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.
(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.
1M
(caption)
Anti-static wrist strap
Conductive material
(conductive sheet) or iron plate
Solder short part

1-8 (No.MA473<Rev.002>)
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.
REPRODUCTION AND POSITION OF LABELS and PRINT
!Please use enough caution not to
see the beam directly or touch it
in case of an adjustment or operation
check.
WARNING LABEL and PRINT

(No.MA473<Rev.002>)1-9
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

1-10 (No.MA473<Rev.002>)
SECTION 3
DISASSEMBLY
3.1 Main body (Used model: KW-AVX810)
3.1.1 Removing the Front panel (See Fig.1, 2, 3, 4)
(1) From the bottom side of the main body, insert the screw-
driver to hole of the third gear from hole aof the bottom
chassis, and then turn the gear to clockwise until Front
panel comes up. (See Fig.1)
Fig.1
(2) Remove the two screws Aattaching the both side of the
Front panel. (See Fig.2)
Fig.2
(3) Remove the three screws Battaching the FPC cover. (See
Fig.3)
Fig.3
(4) Disconnect the FPC from Front panel connected to con-
nectors CN106 and CN107 of the Main board. (See Fig.4)
Fig.4
3.1.2 Removing the Heat sink (See Fig.5)
(1) Remove the three screws C and two screws Dattaching
the Heat sink.
Fig.5
3.1.3 Removing the Rear heat sink (See Fig 6)
(1) Remove the three screws Eattaching the Rear heat sink.
Fig.6
hole a
A
B
CN106CN107
C
D
E

(No.MA473<Rev.002>)1-11
3.1.4 Removing the Front chassis (See Fig.7)
(1) Remove the four screws Fattaching the both side of the
Front chassis.
(2) Disengage two hooks aengaged both side of the Front
chassis.
Fig.7
3.1.5 Removing the DVD mechanism (See Fig.8, 9, 10, 11,
12)
(1) Disconnect the card wire from DVD mechanism connected
to connector CN105 of the Main board. (See Fig.8)
Fig.8
(2) Remove the two screws Gattaching the Top chassis. (See
Fig.9)
Fig.9
(3) Remove the one screw Hattaching the Top chassis. (See
Fig.10)
Fig.10
(4) Remove the four screws Jattaching the Top chassis. (See
Fig.11)
Fig.11
(5) Remove the three screws Kattaching the DVD mecha-
nism. (See Fig.12)
Fig.12
F
hook a
CN105
GG
H
J
K
K

1-12 (No.MA473<Rev.002>)
3.1.6 Removing the BT amp board (See Fig.13)
(1) Disconnect the card wire from Main board connected to
connector CN311 of the BT amp board.
(2) Disconnect Car cable connected to connector CN341 of
the BT amp board.
(3) Remove the four screws Lattaching the BT amp board.
Fig.13
3.1.7 Removing the Sub amp board (See Fig.14, 15)
(1) Remove the one screw Mattaching the Sub amp board.
(See Fig.14)
Fig.14
(2) Disconnect the card wire from Main board connected to
connector CN201 of the Sub amp board. (See Fig.15)
(3) Disconnect the Car cable connected to connector CN241
of the Sub amp board. (See Fig.15)
(4) Remove the three screws Nattaching the Sub amp board.
(See Fig.15)
Fig.15
3.1.8 Removing the Rear panel (See Fig.16, 17)
(1) Disconnect the connector wire from Car cable connected to
connector CN101 of the Main board. (See Fig.16)
(2) Disconnect the connector wire from FAN connected to con-
nector CN112 of the Main board. (See Fig.16)
Fig.16
(3) Remove the six screws Pand two screws Qattaching the
Rear panel. (Se Fig.17)
Fig.17
3.1.9 Removing the Center chassis (See Fig.18)
(1) Remove the three screws Rattaching the Center chassis.
Fig.18
L
CN311 CN341
M
NN
CN201
CN241
CN101
CN112
P
P
Q
RR

(No.MA473<Rev.002>)1-13
3.1.10 Removing the Main board (See Fig.19)
(1) Disconnect the connector wire from Door switch board con-
nected to connector CN109 of the Main board.
(2) Remove the four screws Sattaching the Main board.
Fig.19
3.1.11 Removing the Rear cover (See Fig.20, 21)
(1) Remove the ten screws Tand five screws Uattaching the
Rear cover. (See Fig.20)
Fig.20
(2) Disconnect the card wires from Front board connected to
connector CN401 of the Panel-A board and CN601 of the
Panel-B board. (See Fig.21)
Fig.21
3.1.12 Removing the Front board (See Fig.22)
(1) Remove the five screws Vattaching the Front board.
Fig.22
3.1.13 Removing the Panel-A board (See Fig.23)
(1) Disconnect the FPC connected to connector CN501 of the
Panel-A board.
(2) Remove the four screws Wattaching the Panel-A board.
Fig.23
3.1.14 Removing the Panel-B board (See Fig.23)
(1) Disconnect the FPC connected to connectors CN604 and
CN605 of the Panel-B board.
(2) Remove the three screws Xattaching the Panel-B board.
SS
CN109
T
T
T
T
UU
CN401
CN601
VV
W
W
X
CN501 CN604 CN605

1-14 (No.MA473<Rev.002>)
3.2 DVD mechanism assembly section
3.2.1 Removing the Traverse mechanism assembly (See
Fig.1 to 6)
(1) Solder the short land section on the flexible wire of pickup.
(See Fig.1)
Caution:
* Solder the short land section on the flexible wire of pickup
before disconnecting the flexible wire form the connector
CN101 on the Front end board.
If the flexible wire is disconnected without attaching the
solder, the pickup may be destroyed by static electricity.
* When attaching the Traverse mechanism assembly, re-
move the solder from the short land section after connection
the flexible wire to the connector CN101 on the Front end
board.
Fig.1
(2) Voltage supply to TP79 and TP81 approx DC 3.0V until
Clamper is shift to loading complete position. (See Fig.2)
(3) Disconnect the flexible wires from Traverse mechanism assembly
connected to connector CN101 and CN164 of the Front end
board. (See Fig.2)
Fig.2
(4) Remove the five screws Aattaching the Top cover assembly.
(See Fig.3)
Fig.3
(5) From the bottom side, disconnect the connector wire from
Top cover assembly connected to connector CN2 of the
Front end board. (See Fig.4)
Fig.4
(6) From the bottom side, remove the spring from Traverse
mechanism assembly. (See Fig.5)
Fig.5
Solder short part
CENTER
R21
D- DGND_7
R312
R317
WOOFER
TP67
R357
TP79 TP81
TP92
Voltage supply
position
CN164
CN101
TP81
TP79
A
CN2

(No.MA473<Rev.002>)1-15
(7) From the top side, pull up the traverse mechanism and disengage
three dumper positions. (See Fig.6)
Fig.6
3.2.2 Removing the Front end board (See Fig.7)
(1) Remove the Motor wires from loading motor soldered to
TP79 and TP81 of the Front end board.
(2) Remove the two screws Battaching the Front end board.
Fig.7
3.2.3 Removing the Loading arm assembly (See Fig.8)
(1) Remove the Loading arm spring L from Loading arm assembly.
(2) Slide to left side and then disengage hook athen hook b.
Fig.8
3.2.4 Removing the Gear base assembly (See Fig.9, 10)
(1) Remove the Loading arm spring L. (See Fig.9)
Fig.9
Dumper
(same color spring)
Dumper
(Different color spring)
B
B
TP79
TP81
Loading arm
assembly
Loading arm spring L
hook a
hook b
Loading arm
spring L

1-16 (No.MA473<Rev.002>)
(2) Remove the two screws Cattaching the Gear base assembly.
(See Fig.10)
Fig.10
3.2.5 Removing the Loading arm holder. (See Fig.11)
(1) Remove the two screws Dattaching the Loading arm holder.
(2) Remove the Loading arm spring R.
Fig.11
3.2.6 Removing the Loading moor assembly (See Fig.12)
(1) Remove the three screws Eattaching the Loading motor
assembly.
Fig.12
3.2.7 Removing the Slide cam assembly (See Fig.13)
(1) Slide to backward the Slide cam assembly and the remove
the Slide cam spring.
(2) Slide to frontward the slide cam assembly, and then take
out it.
Fig.13
3.2.8 Removing the Photo board (See Fig.14)
(1) Pressing the hook cand then slide to backward (slide to the
arrow side) the Disc plate.
(2) Remove the one screw Fattaching the Photo board.
Fig.14
3.2.9 Removing the Loading motor (See Fig.15 to 18)
(1) Remove the A wheel gear. (See Fig.15)
Fig.15
C
D
Loading arm
spring R
Loading arm
holder
E
Slide cam assembly
Slide cam spring
hook c
hook c
F
Photo board
A Wheel gea
r

(No.MA473<Rev.002>)1-17
(2) Remove the A worm gear, M connect gear and M wheel
gear by sequentially. (See Fig.16)
Fig.16
(3) Remove the two screws Gattaching the Loading motor.
(Se Fig.17)
Fig.17
(4) When attaching the Loading motor, motor wire should arrange
to figure. (See Fig.18)
Fig.18
3.2.10 Removing the Roller assembly (See Fig.19)
(1) Remove the Slit washer.
(2) Remove the R middle gear.
(3) Remove the R connect gear.
(4) Snap off the part aof the Roller assembly.
(5) Lift up the part bof the Roller assembly, and then release
part c(When release part c, R collar R is easy to come off,
does not lose it).
CAUTION:
When reattach the Roller assembly, Middle gear should keep
direction and Slit washer should be change new part.
Fig.19
3.2.11 Removing the Roller (See Fig.20)
(1) Remove the Slit washer.
(2) Pull out the Roller shaft.
CAUTION:
When reattach the Roller shaft, Slit washer should be change
new part.
Fig.20
A worm gear
M connect gear
M wheel gear
G
Wire arrangement
Direction
Slit washer
R connect gear
R collar R
R middle gear
part b
part a
part c
keep direction
slit
small side
keep direction
slit

1-18 (No.MA473<Rev.002>)
SECTION 4
ADJUSTMENT
4.1 Test instruments required for adjustment
(1) Digital oscilloscope (100MHz)
(2) Digital tester
(3) Test Disc
(4) Extension cable :
EXTXD001-50PF (CN403 --- CN105)
EXTCN001-6P (CN351 --- CN109)
EXTDV002-28PF (CN401 --- CN653)
EXTDV002-16PF (CN601 --- CN654)
4.2 Standard measuring conditions
Power supply voltage DC14.4V(10.5 to 16V)
Load impedance 20K ohm (2 Speakers connection)
Output Level Line out 2.5V (Vol. MAX)
4.3 Standard volume position
Balance and Bass &Treble volume : lndication"0"
Loudness : OFF
4.4 Dummy load
Exclusive dummy load should be used for AM and FM.
For FM dummy load, there is a loss of 6dB between SSG output and antenna input.
The loss of 6dB need not be considered since direct reading of figures are applied in this working standard.
4.5 How to connect the extension cable for adjusting
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.
EXTCN001-6P
EXTDV002-28PF
EXTDV002-16PF
CN109
CN654
CN653
CN105
CN351
CN403
EXTXD001-50PF
CN601
CN401 use original wire

(No.MA473<Rev.002>)1-19
4.6 Service mode
4.6.1 Service mode 1 (Indication of a service mode 1 is nothing.)
[STANDBY/ON ATTENUATOR] [DISP] [VOL]
[Back] [Exit]
[MENU TP/TY] [OPEN]
FF ButtonREW Button
DOWN Button
UP Button
TOUCH PANEL
ENTER
Keep this state more 2 seconds
while continuing pressing the
[STANDBY/ON ATTENUATOR] button
and [OPEN] button sequentially.
NO EJECT?
EMERGENCY EJECT?
Exchanging it operate a menu of a service mode with the [UP] button
and [DOWN] button. Operate choice of a menu with a [ENTER] button.
*1 : When an [ENTER] button is pushed in NO EJECT indication, it is set
by an EJECT prohibition mode.
When an [ENTER] button is pushed in EJECT OK indication, it is set
by a normal mode.
*2 : Forced EJECT movement
A screen becomes normal indication after an [ENTER] button was pushed.
*1
*2
Screen indication

1-20 (No.MA473<Rev.002>)
4.6.2 Service mode 2
Keep this state more 2 seconds
[MENU or TP/PTY] button, [DISP]
button and TOUCH PANEL [DOWN]
button sequentially.
SERVICE MODE 2
INITIALIZE ALL
INITIALIZE
INITIALIZE DVD
INITIALIZE BT
TOUCH PANEL CALIBRATION
TOUCH PANEL CHECK MODE
Screen indication
Exchanging it operate a menu of a service mode with the [UP] button
and [DOWN] button. Operate choice of a menu with a [ENTER] button.
NOW . . .
INITIALIZE ALL INITIALIZE ALL
OK **
INITIALIZE ALL
INITIALIZE ALL (Each EEPROM is
initialized by a factory shipment state.)
*Main micon EEPROM initialization
(user entry domain, error history, speaker
setting, subarea of J-version, data to pre-set)
*Panel micon EEPROM initialization
(picture adjustment data)
*DVD unit EEPROM initialization
(except a permanent domain)
*Bluetooth module EEPROM initialization
*After clear completion, a screen returns to
normal indication after OK indication was
displayed for three seconds.
NOW . . .
INITIALIZE INITIALIZE
OK **
INITIALIZE ALL
INITIALIZE DVD
OK **
Full initialization of EEPROM of a DVD unit
( It is included a permanent domain)
After clear completion, this indication is continued
till an effective key is input.
INITIALIZE DVD
INITIALIZE BT
OK **
Full initialization of EEPROM of Bluetooth module
After clear completion, this indication is continued
till an effective key is input.
INITIALIZE BT
++
+
+
+
Push the center of a + character displayed in turn.
TOUCH PANEL CALIBRATION
++
+
++
The confirmation mode that the calibration of the
touch panel was performed definitely.
*Return to previous menu with a [DISP] button.
TOUCH PANEL CHECK MODE
INITIALIZE
(Initialization of a user area of each EEPROM)
*Main micon EEPROM initialization
(a user entry domain )
(a user entry domain, speaker setting, subarea
of J-version, data to pre-set )
*Panel micon EEPROM initialization
(picture adjustment data )
*DVD unit EEPROM initialization
(except a permanent domain)
*Bluetooth module EEPROM initialization
*After clear completion, a screen returns to
normal indication after OK indication was
displayed for three seconds.