JVC KDAVX-11-J Service manual
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MA30420073SERVICE MANUALEXAD
SERVICE MANUAL
DVD/CD RECEIVER
KD-AVX11J,KD-AVX11E,
KD-AVX11EU,KD-AVX11EE,
KD-AVX11U,KD-AVX11UN,
KD-AVX11UT,KD-AVX11A
for Europefor Northern America
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-37
COPYRIGHT © 2007 Victor Company of Japan, Limited
No.MA304
2007/3
SPECIFICATION
For Northern America
AMPLIFIER
Power Output 20 W RMS × 4 Channels at 4 Ω and [< or =] 1% THD+N
Signal-to-Noise Ratio 70 dB (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)/
SUBWOOFER
Color System NTSC
Video Output (composite) 1 Vp-p/75 Ω
Other Terminals Input LINE IN, VIDEO IN, Antenna input
Frequency Range FM (with channel interval set to 100 kHz or 200 kHz) 87.5 MHz to 107.9 MHz
FM Tuner Usable Sensitivity 11.3 dBf (1.0 µV/75 Ω)
AM Tuner Sensitivity/Selectivity 20 µV/35 dB
Signal Detection System Non-contact optical pickup (semiconductor laser)
Frequency Response DVD, fs=48 kHz 16 Hz to 22 000 Hz
Dynamic Range 93 dB
Signal-to-Noise Ratio 95 dB
Wow and Flutter Less than measurable limit
Screen Size 2.7 inch wide liquid crystal display
Number of Pixel 123 200 pixels: 560 (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)
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")
Mass (approx.) 2.1 kg (4.7 lbs) (excluding accessories)
Design and specifications are subject to change without notice.
Line-Out Level/Impedance 2.5 V/20 kΩ load (full scale)
Output Impedance 1 kΩ
Output VIDEO OUT, DIGITAL OUT (optical)
Others CD changer, OE REMOTE
FM/AM TUNER
FM (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
AM (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
DVD/CD
DVD, fs=96 kHz 16 Hz to 22 000 Hz
VCD/CD 16 Hz to 20 000 Hz
MONITOR
GENERAL
Panel Size (approx.) 188 mm × 58 mm × 14 mm (7-7/16" × 2-5/16" × 5/8")
1-2 (No.MA304)
For 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 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)/
SUBWOOFER
Color System PAL
Video Output (composite) 1 Vp-p/75 Ω
Other Terminals Input LINE IN, VIDEO IN, Aerial input
Frequency Range FM 87.5 MHz to 108.0 MHz
FM Tuner Usable Sensitivity (LW) 144 kHz to 279 kHz
MW Tuner Sensitivity/Selectivity 35 dB
LW Tuner Sensitivity 20 µV/35 dB
Signal Detection System Non-contact optical pickup (semiconductor laser)
Frequency Response DVD, fs=48 kHz 16 Hz to 22 000 Hz
Dynamic Range 93 dB
Signal-to-Noise Ratio 95 dB
Wow and Flutter Less than measurable limit
Screen Size 2.7 inch wide liquid crystal display
Number of Pixel 123 200 pixels: 560 (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
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
Mass (approx.) 2.1 kg (excluding accessories)
Line-Out Level/Impedance 2.5 V/20 kΩ load (full scale)
Output Impedance 1 kΩ
Output VIDEO OUT, DIGITAL OUT (optical)
Others CD changer, OE REMOTE
FM/AM TUNER
AM (MW) 522 kHz to 1 620 kHz
50 dB Quieting Sensitivity 11.3 dBf (1.0 µV/75 Ω)
Alternate Channel Selectivity (400 kHz) 16.3 dBf (1.8 µV/75 Ω)
Frequency Response 65 dB
Stereo Separation 40 Hz to 15 000 Hz
DVD/CD
DVD, fs=96 kHz 16 Hz to 22 000 Hz
VCD/CD 16 Hz to 20 000 Hz
MONITOR
GENERAL
Panel Size (approx.) 188 mm × 58 mm × 14 mm
Design and specifications are subject to change without notice.
(No.MA304)1-3
For Eastern 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 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)/
SUBWOOFER
Color System PAL
Video Output (composite) 1 Vp-p/75 Ω
Other Terminals Input LINE IN, VIDEO IN, Aerial input
Frequency Range FM 87.5 MHz to 108.0 MHz
FM Tuner Usable Sensitivity 11.3 dBf (1.0 µV/75 Ω)
MW Tuner Sensitivity/Selectivity 20 µV/35 dB
LW Tuner Sensitivity 50 µV
Signal Detection System Non-contact optical pickup (semiconductor laser)
Frequency Response DVD, fs=48 kHz 16 Hz to 22 000 Hz
Dynamic Range 93 dB
Signal-to-Noise Ratio 95 dB
Wow and Flutter Less than measurable limit
Screen Size 2.7 inch wide liquid crystal display
Number of Pixel 123 200 pixels: 560 (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
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
Mass (approx.) 2.1 kg (excluding accessories)
Line-Out Level/Impedance 2.5 V/20 kΩ load (full scale)
Output Impedance 1 kΩ
Output VIDEO OUT, DIGITAL OUT (optical)
Others CD changer, OE REMOTE
FM/AM TUNER
AM (MW) 522 kHz to 1 620 kHz
(LW) 144 kHz to 279 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
DVD/CD
DVD, fs=96 kHz 16 Hz to 22 000 Hz
VCD/CD 16 Hz to 20 000 Hz
MONITOR
GENERAL
Panel Size (approx.) 188 mm × 58 mm × 14 mm
Design and specifications are subject to change without notice.
1-4 (No.MA304)
For Asia and Australia
AMPLIFIER
Maximum Power Output Front/Rear 50 W per channel
Continuous Power Output 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)/
SUBWOOFER
Color System NTSC/PAL
Video Output (composite) 1 Vp-p/75 Ω
Other Terminals Input LINE IN, VIDEO IN, Antenna input
Frequency Range FM 87.5 MHz to 108.0 MHz
FM Tuner Usable Sensitivity 11.3 dBf (1.0 µV/75 Ω)
AM Tuner Sensitivity/Selectivity 20 µV/35 dB
Signal Detection System Non-contact optical pickup (semiconductor laser)
Frequency Response DVD, fs=48 kHz 16 Hz to 22 000 Hz
Dynamic Range 93 dB
Signal-to-Noise Ratio 95 dB
Wow and Flutter Less than measurable limit
Screen Size 2.7 inch wide liquid crystal display
Number of Pixel 123 200 pixels: 560 (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
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
Mass (approx.) 2.1 kg (excluding accessories)
Line-Out Level/Impedance 2.5 V/20 kΩ load (full scale)
Output Impedance 1 kΩ
Output VIDEO OUT, DIGITAL OUT (optical)
Others: CD changer
FM/AM TUNER
AM 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
DVD/CD
DVD, fs=96 kHz 16 Hz to 22 000 Hz
VCD/CD 16 Hz to 20 000 Hz
MONITOR
GENERAL
Panel Size (approx.) 188 mm × 58 mm × 14 mm
Design and specifications are subject to change without notice.
(No.MA304)1-5
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.
1-6 (No.MA304)
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.
Flexible wire
CN101
Short-circuit points
Mechanism control board
(No.MA304)1-7
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
1-8 (No.MA304)
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.
(No.MA304)1-9
SECTION 3
DISASSEMBLY
3.1 Main body
3.1.1 Removing the Side heat sink
(Fig.1)
(1) From the left side of the main body, remove the two screws
A and Two screws B attaching the Side heat sink.
A
B
Fig.1
1-10 (No.MA304)
3.1.2 Removing the Top chassis assembly
(See Fig.2 to 6)
(1) From the top side of the main body, remove the one screw
C attaching the Top chassis assembly. (See Fig.2)
(2) From the both sides of the main body, remove the two
screws D attaching the Top chassis assembly. (See Fig.3
and 4)
(3) From the bottom side of the main body, remove the two
screws E attaching the Top chassis assembly. (See Fig.5)
(4) From the back side of the main body, remove the four
screws F attaching the Top chassis assembly. (See Fig.6)
(5) Lift the Top chassis assembly in the direction of the arrow.
(See Fig.6)
C
Fig.2
D
E
Fig.3
D
Fig.4
E
Fig.5
Fig.6
F
(No.MA304)1-11
3.1.3 Removing the Front chassis assembly
(See Fig.7 and 8)
(1) From the both sides of the Top chassis assembly, remove
the two screws G attaching the Front chassis assembly.
(See Fig.7 and 8)
3.1.4 Removing the DVD mechanism assembly
(See Fig.9)
(1) From the inside of the Top chassis assembly, remove the
three screws H attaching the DVD mechanism assembly
and take out the DVD mechanism assembly.
(2) From the side of the DVD mechanism assembly, remove
the double-stick tape fixing the insulator.
(3) Remove the insulator from the DVD mechanism assembly.
G
Fig.7
G
Fig.8
HH
1-12 (No.MA304)
H
Fig.9
3.1.5 Removing the Connection board assembly
(See Fig.10)
(1) From the bottom side of the DVD mechanism assembly, re-
lease the lock of the connector CN965
board assembly and disconnect the card wire.
(2) Remove the three screws J attaching the Connection
board assembly on the DVD mechanism assembly. And remove the connection board assembly.
on the Connection
J
3.1.6 Removing the Rear bracket
(See Fig.11 and 12)
(1) Remove the one screw K attaching the Antenna cable, re-
move the one screw L attaching the CD-CH jack, remove
the one screw M attaching the IC bracket, remove the one
screw N attaching the Digital out jack and remove the two
screws P attaching the Rear bracket. (See Fig.11)
(2) Remove the three screws Q attaching the Wire holder.
(See Fig.11)
(3) Disconnect the connector wires from car cables connected
to connector CN931
board assembly. (See Fig.12)
(4) Disconnect the connector wire from Fan connected to con-
nector CN861
3.1.7 Removing the Main board assembly
(See Fig.12)
(1) Disconnect the card wire from connector CN962
Main board assembly.
(2) Disconnect the connector wire from Gear assembly con-
nected to connector CN881
assembly.
(3) Remove the two screws R attaching the Main board as-
sembly.
, CN311, and CN361 on the Main
on the Main board assembly. (See Fig.12)
on the
and CN891 on the Main board
J
CN965
Fig.10
Q
KL MNPP
Fig.11
CN962CN891CN881
CN931 CN361 CN311 CN861
Fig.12
(No.MA304)1-13
R
3.1.8 Removing the Front door mechanism assembly
(See Fig.13)
(1) From the top side of the bottom chassis assembly, remove
the three screws S attaching the FPC guide to the Bottom
chassis assembly.
(2) Remove the five screws T attaching the Front door mech-
anism assembly to the Bottom chassis.
REFERENCE:
When attaching the screws S and T, apply a locking agent
them.
3.1.9 Removing the panel A control board assembly and panel B control board assembly
(See Fig.14 and 15)
(1) Remove the eight screws U attaching the Rear cover. (See
Fig.14)
(2) Remove the two screws V attaching the panel B control
board. (See Fig.15)
STT
U
Fig.13
U
Fig.14
V
Fig.15
1-14 (No.MA304)
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
on the
on the
, make sure to
Flexible wire
Double tape
CN101
B
Short-circuit points
A
Lug wire
B
CN201
Feed motor
a
C
CN202
Mechanism control board
Fig.1
(No.MA304)1-15
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
F
Top cover
Stopper
F
D
D
b
c
E
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
1-16 (No.MA304)
Fig.2
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
Clamper spring
f
Clamper2 spring
Chassis base assembly
g
d
Chassis base assembly
Fig.7
e
Fig.5
(No.MA304)1-17
Clamper unit
Clamper unit
Clamper spring
Fig.8
1-18 (No.MA304)
Fig.9
g
Notch
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
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
on the
G
Front unit
h
Fig.11
CN202
Double tape
Fig.10
Flexible wire
Double tape
j
i
H
Switch board
Front unit
G
Fig.12
h
(No.MA304)1-19
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.
m
Loading arm assembly
Side cam
assembly
p
m
k
Fig.13
Loading arm assembly
k
n
n
Connect arm
1-20 (No.MA304)
Fig.14
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
Collar
Rod(R) Rod(L)
q
q
q
Collar
Rod(L)
Rod(R)
q
Loading arm assembly
Fig.15
Roller assembly
Loading arm assembly
q
Rod(L)
q
Collar
Washer
Rod(R)
Fig.16
(No.MA304)1-21
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
DVD Pickup assembly
Feed gear
J
Thrust spring
Fig.17
s
L.S.collar
Rod(M)
Lead screw
Sub shaft
L.S.collar
r
L.S.gear
Fig.18
K
Rack spring
Lead screw
Rack plate
DVD Pickup
Fig.19
1-22 (No.MA304)
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