JVC KD-ADV38J User manual

SERVICE MANUAL
COPYRIGHT © 2007 Victor Company of Japan, Limited No.MA321
2007/4
DVD/CD RECEIVER
MA32120074SERVICE MANUAL
KD-ADV38J, KD-AVX33J,
KD-AVX33E, KD-AVX33EE,
KD-AVX33U, KD-AVX33A
COPYRIGHT © 2007 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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-39
KD-ADV38J
KD-AVX33J
KD-AVX33E
KD-AVX33EE

1-2 (No.MA321)
SPECIFICATION
KD-ADV38/KD-AVX33J
AMPLIFIER
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)
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 LINE OUT (FRONT/
REAR)/CENTER OUT/SUBWOOFER
Line-Out Level/Impedance 5.0 V/20 k
Ω load (full scale)
Output Impedance 1 k
Ω
Color System NTSC
Video Output (composite) 1 Vp-p/75
Ω
Other Terminals Input LINE IN, VIDEO IN, MIC IN, USB input terminal, Antenna input
Output 2nd AUDIO OUT, VIDEO OUT
Others CD changer, OE REMOTE
FM/AM TUNER
Frequency Range FM 87.5 MHz to 107.9 MHz (with channel interval set to 100 kHz or 200 kHz)
87.5 MHz to 108.0 MHz (with channel interval set to 50 kHz)
AM 530 kHz to 1 710 kHz (with channel interval set to 10 kHz)
531 kHz to 1 602 kHz (with channel interval set to 9 kHz)
FM Tuner Usable Sensitivity 11.3 dBf (1.0
µ V/75 Ω )
50 dB Quieting Sensitivity 16.3 dBf (1.8
µ V/75 Ω )
Alternate Channel Selectivity (400 kHz) 65 dB
Frequency Response 40 Hz to 15 000 Hz
Stereo Separation 35 dB
AM Tuner Sensitivity/Selectivity 20
µ V/35 dB
DVD/CD
Signal Detection System Non-contact optical pickup (semiconductor laser)
Frequency Response DVD, fs=48 kHz 16 Hz to 22 000 Hz
DVD, fs=192 kHz 16 Hz to 88 000 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
MONITOR
Screen Size 3.5 inch wide liquid crystal display
Number of Pixel 211 200 pixels: 960 (horizontal)
× 220 (vertical)
Drive Method TFT (Thin Film Transistor) active matrix format
Color System PAL/NTSC
Aspect Ratio 16:9 (wide)
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)
USB
USB Standards USB 1.1
Data Transfer Rate Full Speed: Maximum 12 Mbytes
Low Speed: Maximum 1.5 Mbytes
Compatible Device Mass storage class
Compatible File System FAT 32/16/12
Max. Current Less than 500 mA/5 V
BLUETOOTH
Version Bluetooth 1.2 certified
Output Power +4 dBm Max. (Power class 2)
Service Area Within 10 m (10.9 yd)

(No.MA321)1-3
Design and specifications are subject to change without notice.
KD-AVX33E
Profile HSP (Headset Profile)
HFP (Hands-Free Profile)
A2DP (Advanced Audio Distribution Profile)
AVRCP (Audio/Video Remote Control Profile)
SPP (Serial Port Profile)
OPP (Object Push Profile)
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 (32 ° F to 104 ° F)
Dimensions (W
× H × D) Installation Size (approx.) 182 mm × 52 mm × 160 mm (7-3/16" × 2-1/16" × 6-5/16")
Panel Size (approx.) 188 mm
× 58 mm × 12 mm (7-7/16" × 2-5/16" × 1/2")
Mass (approx.) 2.1 kg (4.7 lbs) (excluding accessories)
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 Ω to 8 Ω allowance)
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 LINE OUT (FRONT/
REAR)/CENTER OUT/SUBWOOFER
Line-Out Level/Impedance 5.0 V/20 k
Ω load (full scale)
Output Impedance 1 k
Ω
Color System PAL
Video Output (composite) 1 Vp-p/75
Ω
Other Terminals Input LINE IN, VIDEO IN, MIC IN, USB input terminal, Aerial input
Output 2nd AUDIO OUT, VIDEO OUT
Others CD changer, 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 11.3 dBf (1.0
µ V/75 Ω )
50 dB Quieting Sensitivity 16.3 dBf (1.8
µ V/75 Ω )
Alternate Channel Selectivity (400 kHz) 65 dB
Frequency Response 40 Hz to 15 000 Hz
Stereo Separation 35 dB
MW Tuner Sensitivity/Selectivity 20
µ V/35 dB
LW Tuner Sensitivity 50
µ V
DVD/CD
Signal Detection System Non-contact optical pickup (semiconductor laser)
Frequency Response DVD, fs=48 kHz 16 Hz to 22 000 Hz
DVD, fs=192 kHz 16 Hz to 88 000 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
MONITOR
Screen Size 3.5 inch wide liquid crystal display
Number of Pixel 211 200 pixels: 960 (horizontal)
× 220 (vertical)
Drive Method TFT (Thin Film Transistor) active matrix format
Color System PAL/NTSC
Aspect Ratio 16:9 (wide)
Allowable Storage Temperature -10
° C to +60 ° C
Allowable Operating Temperature 0
° C to +40 ° C

1-4 (No.MA321)
Design and specifications are subject to change without notice.
KD-AVX33EE
USB
USB Standards USB 1.1
Data Transfer Rate Full Speed: Maximum 12 Mbytes
Low Speed: Maximum 1.5 Mbytes
Compatible Device: Mass storage class
Compatible File System: FAT 32/16/12
Max. Current: Less than 500 mA/5 V
BLUETOOTH
Version Bluetooth 1.2 certified
Output Power +4 dBm Max. (Power class 2)
Service Area Within 10 m
Profile HSP (Headset Profile)
HFP (Hands-Free Profile)
A2DP (Advanced Audio Distribution Profile)
AVRCP (Audio/Video Remote Control Profile)
SPP (Serial Port Profile)
OPP (Object Push Profile)
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.) 2.1 kg (excluding accessories)
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 Ω to 8 Ω allowance)
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 LINE OUT (FRONT/
REAR)/CENTER OUT/SUBWOOFER
Line-Out Level/Impedance 5.0 V/20 k
Ω load (full scale)
Output Impedance 1 k
Ω
Color System PAL
Video Output (composite) 1 Vp-p/75
Ω
Other Terminals Input LINE IN, VIDEO IN, MIC IN, USB input terminal, Aerial input
Output 2nd AUDIO OUT, VIDEO OUT
Others CD changer, 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 11.3 dBf (1.0
µ V/75 Ω )
50 dB Quieting Sensitivity 16.3 dBf (1.8
µ V/75 Ω )
Alternate Channel Selectivity (400 kHz) 65 dB
Frequency Response 40 Hz to 15 000 Hz
Stereo Separation 35 dB
MW Tuner Sensitivity/Selectivity 20
µ V/35 dB
LW Tuner Sensitivity 50
µ V
DVD/CD
Signal Detection System Non-contact optical pickup (semiconductor laser)
Frequency Response DVD, fs=48 kHz 16 Hz to 22 000 Hz
DVD, fs=192 kHz 16 Hz to 88 000 Hz
VCD/CD 16 Hz to 20 000 Hz
Dynamic Range 93 dB

(No.MA321)1-5
Design and specifications are subject to change without notice.
KD-AVX33U
Signal-to-Noise Ratio 95 dB
Wow and Flutter Less than measurable limit
MONITOR
Screen Size 3.5 inch wide liquid crystal display
Number of Pixel 211 200 pixels: 960 (horizontal)
× 220 (vertical)
Drive Method TFT (Thin Film Transistor) active matrix format
Color System PAL/NTSC
Aspect Ratio 16:9 (wide)
Allowable Storage Temperature -10
° C to +60 ° C
Allowable Operating Temperature 0
° C to +40 ° C
USB
USB Standards USB 1.1
Data Transfer Rate Full Speed: Maximum 12 Mbytes
Low Speed: Maximum 1.5 Mbytes
Compatible Device Mass storage class
Compatible File System FAT 32/16/12
Max. Current Less than 500 mA/5 V
BLUETOOTH
Version Bluetooth 1.2 certified
Output Power +4 dBm Max. (Power class 2)
Service Area Within 10 m
Profile HSP (Headset Profile)
HFP (Hands-Free Profile)
A2DP (Advanced Audio Distribution Profile)
AVRCP (Audio/Video Remote Control Profile)
SPP (Serial Port Profile)
OPP (Object Push Profile)
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.) 2.1 kg (excluding accessories)
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.
Signal-to-Noise Ratio 70 dB
Load Impedance 4
Ω (4 Ω to 8 Ω allowance)
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 LINE OUT (FRONT/
REAR)/CENTER OUT/SUBWOOFER
Line-Out Level/Impedance 5.0 V/20 k
Ω load (full scale)
Output Impedance 1 k
Ω
Color System NTSC/PAL
Video Output (composite) 1 Vp-p/75
Ω
Other Terminals Input LINE IN, VIDEO IN, MIC IN, USB input terminal, Antenna input
Output 2nd AUDIO OUT, VIDEO OUT
Others CD changer
FM/AM TUNER
Frequency Range FM 87.5 MHz to 108.0 MHz
AM 531 kHz to 1 602 kHz

1-6 (No.MA321)
Design and specifications are subject to change without notice.
KD-AVX33A
FM Tuner Usable Sensitivity 11.3 dBf (1.0 µ V/75 Ω )
50 dB Quieting Sensitivity 16.3 dBf (1.8
µ V/75 Ω )
Alternate Channel Selectivity (400 kHz) 65 dB
Frequency Response 40 Hz to 15 000 Hz
Stereo Separation 35 dB
AM Tuner Sensitivity/Selectivity 20
µ V/35 dB
DVD/CD
Signal Detection System Non-contact optical pickup (semiconductor laser)
Frequency Response DVD, fs=48 kHz 16 Hz to 22 000 Hz
DVD, fs=192 kHz 16 Hz to 88 000 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
MONITOR
Screen Size 3.5 inch wide liquid crystal display
Number of Pixel 211 200 pixels: 960 (horizontal)
× 220 (vertical)
Drive Method TFT (Thin Film Transistor) active matrix format
Color System NTSC/PAL
Aspect Ratio 16:9 (wide)
Allowable Storage Temperature -10
° C to +60 ° C
Allowable Operating Temperature 0
° C to +40 ° C
USB
USB Standards USB 1.1
Data Transfer Rate Full Speed: Maximum 12 Mbytes
Low Speed: Maximum 1.5 Mbytes
Compatible Device Mass storage class
Compatible File System FAT 32/16/12
Max. Current Less than 500 mA/5 V
BLUETOOTH
Version Bluetooth 1.2 certified
Output Power +4 dBm Max. (Power class 2)
Service Area Within 10 m
Profile HSP (Headset Profile)
HFP (Hands-Free Profile)
A2DP (Advanced Audio Distribution Profile)
AVRCP (Audio/Video Remote Control Profile)
SPP (Serial Port Profile)
OPP (Object Push Profile)
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.) 2.1 kg (excluding accessories)
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.
Signal-to-Noise Ratio 70 dB
Load Impedance 4
Ω (4 Ω to 8 Ω allowance)
Equalizer Control Range Frequencies 60 Hz, 150 Hz, 400 Hz, 1 kHz, 2.5 kHz, 6.3 kHz, 15 kHz
Level ±10 dB

(No.MA321)1-7
Design and specifications are subject to change without notice.
Audio Output Level LINE OUT (FRONT/
REAR)/CENTER OUT/SUBWOOFER
Line-Out Level/Impedance 5.0 V/20 k Ω load (full scale)
Output Impedance 1 k
Ω
Color System NTSC/PAL
Video Output (composite) 1 Vp-p/75
Ω
Other Terminals Input LINE IN, VIDEO IN, MIC IN, USB input terminal, Antenna input
Output 2nd AUDIO OUT, VIDEO OUT
Others CD changer
FM/AM TUNER
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
µ V/75 Ω )
50 dB Quieting Sensitivity 16.3 dBf (1.8
µ V/75 Ω )
Alternate Channel Selectivity (400 kHz) 65 dB
Frequency Response 40 Hz to 15 000 Hz
Stereo Separation 35 dB
AM Tuner Sensitivity/Selectivity 20
µ V/35 dB
DVD/CD
Signal Detection System Non-contact optical pickup (semiconductor laser)
Frequency Response DVD, fs=48 kHz 16 Hz to 22 000 Hz
DVD, fs=192 kHz 16 Hz to 88 000 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
MONITOR
Screen Size 3.5 inch wide liquid crystal display
Number of Pixel 211 200 pixels: 960 (horizontal)
× 220 (vertical)
Drive Method TFT (Thin Film Transistor) active matrix format
Color System NTSC/PAL
Aspect Ratio 16:9 (wide)
Allowable Storage Temperature -10
° C to +60 ° C
Allowable Operating Temperature 0
° C to +40 ° C
USB
USB Standards USB 1.1
Data Transfer Rate Full Speed: Maximum 12 Mbytes
Low Speed: Maximum 1.5 Mbytes
Compatible Device Mass storage class
Compatible File System FAT 32/16/12
Max. Current Less than 500 mA/5 V
BLUETOOTH
Version Bluetooth 1.2 certified
Output Power +4 dBm Max. (Power class 2)
Service Area Within 10 m
Profile HSP (Headset Profile)
HFP (Hands-Free Profile)
A2DP (Advanced Audio Distribution Profile)
AVRCP (Audio/Video Remote Control Profile)
SPP (Serial Port Profile)
OPP (Object Push Profile)
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.) 2.1 kg (excluding accessories)

1-8 (No.MA321)
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.MA321)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.
(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
Mechanism control board
CN101
Flexible wire
Short-circuit points

1-10 (No.MA321)
1.5 Important for laser products
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.
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.MA321)1-11
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

1-12 (No.MA321)
SECTION 3
DISASSEMBLY
3.1 Main body
3.1.1 Removing the Heat sink
(See Fig.1)
(1) Remove the two screws Aand two screws Battaching the
Heat sink.
Fig.1
3.1.2 Removing the Top chassis assembly
(See Fig.2 to 4)
(1) From the top side of the main body, remove the two screws
Cattaching the both side of Top chassis assembly. (See
Fig.2)
(2) From the bottom side of the main body, remove the two
screws Dattaching the Top chassis assembly. (See Fig.3)
(3) From the back side of the main body, remove the four
screws Eattaching the Top chassis assembly. (See Fig.4)
Fig.2
Fig.3
Fig.4
A
B
C
D
D
E

(No.MA321)1-13
3.1.3 Removing the Main board assembly
(See Fig.5 and 6)
(1) Remove the two screws Fattaching the Rear bracket as-
sembly. (See Fig.5)
(2) Disconnect the connector wire from Gear bracket unit con-
nected to connector CN891 of the main board assembly.
(See Fig.6)
(3) Disconnect the connector wire from motor connected to
connector CN881 of the Main board assembly. (See Fig.6)
(4) Disconnect the card wire from Front chassis assembly con-
nected to connector CN962 of the Main board assembly.
(See Fig.6)
(5) Remove the two screws Gattaching the Main board as-
sembly. (See Fig.6)
(6) Slide the Main board assembly to rear side and lift up it,
then take out the Main board assembly.(See Fig.6)
Fig.5
Fig.6
3.1.4 Removing the DVD mechanism assembly
(See Fig.7)
(1) Remove the three screws Hattaching the DVD mechanism
assembly.
Fig.7
F
G
G
CN962
CN881
CN891
H
H
H

1-14 (No.MA321)
3.1.5 Removing the Connection board assembly
(See Fig.8)
(1) Disconnect the card wire from DVD mechanism assembly
connected to connector CN965 and CN969 of the Connec-
tion board assembly.
(2) Remove the four screws Jattaching the Connection board
assembly.
Fig.8
3.1.6 Removing the Rear cover
(See Fig.9)
(1) Remove the nine screws Kattaching the Rear cover.
Fig.9
3.1.7 Removing the Panel-A control board assembly
(See Fig.10)
(1) Remove the one screw Lattaching the Panel-A control
board assembly.
Fig.10
J
J
CN965
CN969
K
K
L

(No.MA321)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 on the
mechanism control board.
(3) Disconnect the card wire from connector CN201 on the
mechanism control board.
(4) Disconnect the flexible wire from connector CN202 on the
mechanism control board.
(5) Unsolder two soldered points aon the mechanism control
board and remove the wire extending from the feed motor.
(6) Remove the screw Aattaching the lug wire.
(7) Remove the two screws Band screw Cattaching the
mechanism control board.
Caution:
• As the flexible wire to be connected to CN101, make sure to
attach it to the mechanism control board using a double
tape.
• After reassembling, unsolder the short-circuit points.
Fig.1
Double tape
Feed motor
Mechanism control board
CN202
CN101
B
a
C
B
CN201
Flexible wire
Short-circuit points
A
Lug wire

1-16 (No.MA321)
3.2.2 Removing the top cover
(See Fig.2)
(1) Remove the two screws Dattaching the top cover on the
back of the body.
(2) Remove the top cover upward.
Reference:
When reassembling, set part bof the top cover under the
bending part cof 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 Eattaching
the lug wire. (See Fig.2.)
(2) Remove the two screws Fattaching 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 bot-
tom of the mechanism to the dampers.
• Before inserting the shaft to the dampers, apply IPA to the
hole of damper.
Fig.2
Fig.3
Fig.4
D
Top cover
Stopper
Stopper
F
F
b
cE
Lug wire
D
Floating spring
Mechanism section
Damper (R)
(Purple)
Damper (F)
(Black)
Damper (F)
(Black)
Chassis frame
Damper SP.(F)
(Silver)
Damper SP.(F)
(Silver)
Damper SP.(R)
(Red)

(No.MA321)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 dof 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 eand 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 eand 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 dof 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.)
Fig.5
Fig.6
Fig.7
Clamper unit
Clamper spring
Clamper2 spring
g
f
e
Chassis base assembly
Clamper2 spring
Chassis base assembly
Clamper spring
Chassis base assembly
d

1-18 (No.MA321)
Fig.8
Fig.9
Clamper unit
Clamper spring
Notch
g
Clamper unit

(No.MA321)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 Gattaching 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 iand jon the right side of the chassis
base assembly. Then remove the front unit upward. (See
Figs.11 and 12.)
(4) Remove the two screws Hattaching 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.)
Fig.10
Fig.11
Fig.12
Mechanism control board
Flexible wire
CN202
Double tape
G
Front unit
h
h
Front unit
Switch board
j
G
H
i
Double tape

1-20 (No.MA321)
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 kand m of the chassis base assem-
bly.
(2) Release the boss from notch nof the connect arm on the
right side of the body, and release the boss from notch pof
the slide cam assembly on the left side.
Fig.13
Fig.14
kn
m
Loading arm assembly
k
n
m
Loading arm assembly
p
Side cam
assembly
Connect arm