JVC TH-C30J User manual

SERVICE MANUAL
COPYRIGHT © 2006 Victor Company of Japan, Limited No.MB506
2006/3
DVD DIGITAL THEATER SYSTEM
MB50620063
TH-C30J,TH-C30C,
TH-C20J,TH-C20C
Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-33
XV-THC30
SP-PWC30
SP-THC40F
SP-THC40C
SP-THC40S
XV-THC20
SP-PWC20
SP-THC20F
SP-THC20C
SP-THC20S

1-2 (No.MB506)
SPECIFICATION
Center unit (XV-THC30/XV-THC20)
*1: This value is measured at System cord CONNECTOR for reference.
*2: Corresponding to Linear PCM, Dolby Digital, and DTS Digital Surround (with sampling frequency -32 kHz, 44.1 kHz, 48 kHz)
Subwoofer (SP-PWC30)
Subwoofer (SP-PWC20)
Audio section Total Harmonic Distortion *1 0.02%
Digital input *2 DIGITAL IN (DBS) (OPTICAL) : -21 dBm to -15 dBm (660 nm ± 30 nm)
Video section Video System NTSC
Horizontal Resolution 500 lines
Signal-to-Noise Ratio 64 dB
Video output level Composite : 1.0 V(p-p)/75 Ω
S-video-Y : 1.0 V(p-p)/75 Ω
S-video-C : 0.286 V(p-p)/75 Ω
Component-Y : 1.0 V(p-p)/75 Ω
Component-PB/PR : 0.7 V(p-p)/75 Ω
Video input sensitivity/Impedance (VCR IN) Composite : 1.0 V(p-p)/75 Ω
S-video-Y : 1.0 V(p-p)/75 Ω
S-video-C : 0.286 V(p-p)/75 Ω
USB storage USB specification Compatible with the USB 2.0 Full-Speed
Compatible device Mass Storage Class
Compatible file system FAT16, FAT32
Bus power supply Max. 500 mA
Tuner section Tuning Range FM : 87.5 MHz to 108.0 MHz
AM : 530 kHz to 1 710 kHz
General Power Requirements AC 120 V , 60 Hz
Power Consumption 25 W (at operation)
0.6 W (in standby mode)
Dimensions (W ×H ×D) 400 mm ×85 mm ×316 mm (15-3/4 inches ×3-3/8 inches ×12-1/2 inches)
Mass 3.8 kg (8.4 lbs)
Amplifier section Front/Center/Surround 167 W per channel, RMS at 3 Ωat 1 kHz, with 10 % total harmonic distortion.
Subwoofer 167 W, RMS at 3 Ωat 100 Hz, with 10 % total harmonic distortion.
Speaker section Speaker unit 16 cm (6-5/16 inches) Bass-reflex
Power Handling Capacity 170 W
Impedance 3 Ω
Frequency Range 30 Hz to 200 Hz
Sound Pressure Level 73 dB/W·m
General Power Requirements AC 120 V , 60 Hz
Power Consumption 160 W (at operation)
0 W (in standby mode)
Dimensions (W ×H ×D) 170 mm ×411 mm ×458 mm (6-3/4 inches ×16-3/16 inches ×18-1/16 inches)
Mass 11.5 kg (25.4 lbs)
Amplifier section Front/Center/Surround 135 W per channel, RMS at 4 Ωat 1 kHz, with 10 % total harmonic distortion.
Subwoofer 135 W, RMS at 4 Ωat 100 Hz, with 10 % total harmonic distortion.
Speaker section Speaker unit 16 cm (6-5/16 inches) Bass-reflex
Power Handling Capacity 140 W
Impedance 4 Ω
Frequency Range 30 Hz to 200 Hz
Sound Pressure Level 74 dB/W·m
General Power Requirements AC 120 V , 60 Hz
Power Consumption 135 W (at operation)
0 W (in standby mode)
Dimensions (W ×H ×D) 170 mm ×411 mm ×458 mm (6-3/4 inches ×16-3/16 inches ×18-1/16 inches)
Mass 11.5 kg (25.4 lbs)

(No.MB506)1-3
Satellite Speakers - SP-XTHC30
Satellite Speakers - SP-XTHC20
Designs & specifications are subject to change without notice.
Front speakers
(SP-THC40F)
Type 2-way 2-speaker Bass reflex type (Magnetically shielded Type)
Speaker 8.0 cm (3-3/16 inches) cone ×1
1.5 cm (5/8 inches) dome ×1
Power Handling Capacity 170 W
Impedance 3 Ω
Frequency Range 80 Hz to 20 000 Hz
Sound Pressure Level 77 dB/W·m
Dimensions (W ×H ×D) 104.5 mm ×139 mm ×101 mm (4-1/8 inches ×5-1/2 inches ×4 inches)
Mass 0.56 kg (1.3 lbs) each
Center speaker
(SP-THC40C)
Type 2-way 2-speaker Bass reflex type (Magnetically shielded Type)
Speaker 8.0 cm (3-3/16 inches) cone ×1
1.5 cm (5/8 inches) dome ×1
Power Handling Capacity 170 W
Impedance 3 Ω
Frequency Range 80 Hz to 20 000 Hz
Sound Pressure Level 77 dB/W·m
Dimensions (W ×H ×D) 137 mm ×105 mm ×104.5 mm (5-7/16 inches ×4-3/16 inches ×4-1/8 inches)
Mass 0.57 kg (1.3 lbs)
Surround speakers
(SP-THC40S)
Type 1-way Bass reflex type
Speaker 8.0 cm (3-3/16 inches) cone ×1
Power Handling Capacity 170 W
Impedance 3 Ω
Frequency Range 80 Hz to 20 000 Hz
Sound Pressure Level 70 dB/W·m
Dimensions (W ×H ×D) 111.5 mm ×148 mm ×106.5 mm (4-7/16 inches ×5-7/8 inches ×4-1/4 inches)
Mass 0.56 kg (1.3 lbs) each
Front speakers
(SP-THC20F)
Type 1-way Bass reflex type (Magnetically shielded Type)
Speaker 8.0 cm (3-3/16 inches) cone ×1
Power Handling Capacity 140 W
Impedance 4 Ω
Frequency Range 90 Hz to 20 000 Hz
Sound Pressure Level 78 dB/W·m
Dimensions (W ×H ×D) 106 mm ×119.5 mm ×102 mm (4-3/16 inches ×4-3/4 inches ×4-1/16 inches)
Mass 0.55 kg (1.3 lbs) each
Center speaker
(SP-THC20C)
Type 1-way Bass reflex type (Magnetically shielded Type)
Speaker 8.0 cm (3-3/16 inches) cone ×1
Power Handling Capacity 140 W
Impedance 4 Ω
Frequency Range 90 Hz to 20 000 Hz
Sound Pressure Level 78 dB/W·m
Dimensions (W ×H ×D) 106 mm ×119.5 mm ×102 mm (4-3/16 inches ×4-3/4 inches ×4-1/16 inches)
Mass 0.55 kg (1.3 lbs)
Surround speakers
(SP-THC20S)
Type 1-way Bass reflex type
Speaker 8.0 cm (3-3/16 inches) cone ×1
Power Handling Capacity 140 W
Impedance 4 Ω
Frequency Range 90 Hz to 20 000 Hz
Sound Pressure Level 76 dB/W·m
Dimensions (W ×H ×D) 106 mm ×119.5 mm ×102 mm (4-3/16 inches ×4-3/4 inches ×4-1/16 inches)
Mass 0.63 kg (1.4 lbs) each

1-4 (No.MB506)
SECTION 1
PRECAUTION
1.1 Safety Precautions
(1) This design of this product contains special hardware and
many circuits and components specially for safety purpos-
es. For continued protection, no changes should be made
to the original design unless authorized in writing by the
manufacturer. Replacement parts must be identical to
those used in the original circuits. Services should be per-
formed by qualified personnel only.
(2) Alterations of the design or circuitry of the product should
not be made. Any design alterations of the product should
not be made. Any design alterations or additions will void
the manufacturers warranty and will further relieve the
manufacture of responsibility for personal injury or property
damage resulting therefrom.
(3) Many electrical and mechanical parts in the products have
special safety-related characteristics. These characteris-
tics are often not evident from visual inspection nor can the
protection afforded by them necessarily be obtained by us-
ing replacement components rated for higher voltage, watt-
age, etc. Replacement parts which have these special
safety characteristics are identified in the Parts List of Ser-
vice Manual. Electrical components having such features
are identified by shading on the schematics and by ( ) on
the Parts List in the Service Manual. The use of a substitute
replacement which does not have the same safety charac-
teristics as the recommended replacement parts shown in
the Parts List of Service Manual may create shock, fire, or
other hazards.
(4) The leads in the products are routed and dressed with ties,
clamps, tubings, barriers and the like to be separated from
live parts, high temperature parts, moving parts and/or
sharp edges for the prevention of electric shock and fire
hazard. When service is required, the original lead routing
and dress should be observed, and it should be confirmed
that they have been returned to normal, after reassem-
bling.
(5) Leakage shock hazard testing
After reassembling the product, always perform an isola-
tion check on the exposed metal parts of the product (an-
tenna terminals, knobs, metal cabinet, screw heads,
headphone jack, control shafts, etc.) to be sure the product
is safe to operate without danger of electrical shock.Do not
use a line isolation transformer during this check.
• Plug the AC line cord directly into the AC outlet. Using a
"Leakage Current Tester", measure the leakage current
from each exposed metal parts of the cabinet, particular-
ly any exposed metal part having a return path to the
chassis, to a known good earth ground. Any leakage cur-
rent must not exceed 0.5mA AC (r.m.s.).
• Alternate check method
Plug the AC line cord directly into the AC outlet. Use an
AC voltmeter having, 1,000Ωper volt or more sensitivity
in the following manner. Connect a 1,500Ω10W resistor
paralleled by a 0.15µF AC-type capacitor between an ex-
posed metal part and a known good earth ground.
Measure the AC voltage across the resistor with the AC
voltmeter.
Move the resistor connection to each exposed metal
part, particularly any exposed metal part having a return
path to the chassis, and measure the AC voltage across
the resistor. Now, reverse the plug in the AC outlet and
repeat each measurement. Voltage measured any must
not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5
mA AC (r.m.s.).
1.2 Warning
(1) This equipment has been designed and manufactured to
meet international safety standards.
(2) It is the legal responsibility of the repairer to ensure that
these safety standards are maintained.
(3) Repairs must be made in accordance with the relevant
safety standards.
(4) It is essential that safety critical components are replaced
by approved parts.
(5) If mains voltage selector is provided, check setting for local
voltage.
1.3 Caution
Burrs formed during molding may be left over on some parts
of the chassis.
Therefore, pay attention to such burrs in the case of pre-
forming repair of this system.
1.4 Critical parts for safety
In regard with component parts appearing on the silk-screen
printed side (parts side) of the PWB diagrams, the parts that are
printed over with black such as the resistor ( ), diode ( )
and ICP ( ) or identified by the " " mark nearby are critical
for safety. When replacing them, be sure to use the parts of the
same type and rating as specified by the manufacturer.
(This regulation dose not Except the J and C version)
Good earth ground
Place this
probe on
each exposed
metal part.
AC VOLTMETER
(Having 1000
ohms/volts,
or more sensitivity)
1500 10W
0.15 F AC TYPE

(No.MB506)1-5
1.5 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.
1.5.1 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.
1.6 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) I t is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it.
1.7 Attention when traverse unit is decomposed
*Please refer to "Disassembly method" in the text for the pickup unit.
• Apply solder to the short land sections before the flexible wire is disconnected from the connecto on the servo board. (If the flexible
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 sections after connecting the flexible wire.
1M
Conductive material
(conductive sheet) or iron palate
(caption)
Anti-static wrist strap
Double
Soldering point
Motor
face tape
Card wire

1-6 (No.MB506)
1.8 Importance administering point on the safety
Graphic symbol mark
(This symbol means slow blow type fuse.)
FOR CONTINUED PROTECTION AGAINST RISK
OF FIRE, REPLACE ONLY WITH SAME TYPE
AND RATING OF FUSES ;
should be read as follows ;
F901 : T1AH 250V F901 : T1AH 250V
Full Fuse Replacement Marking
FUSE CAUTION
Le symbole graphique (Ce symbole signifie
fusible de type a fusion lent.)
POUR UNE PROTECTION CONTINUE CONTRE
DES RISQUES D'INCENDIE, REMPLACER
SEULEMENT PAR UN FUSIBLE DU MEME TYPE ;
Marquage Pour Le Remplacement
Complet De Fusible
PRECAUTIONS SUR LES FUSIBLES
doit etre interprete comme suit ;
^
Graphic symbol mark
(This symbol means fast blow type fuse.)
FOR CONTINUED PROTECTION AGAINST RISK
OF FIRE, REPLACE ONLY WITH SAME TYPE
AND RATING OF FUSES ;
should be read as follows ;
F101 : 8A 125V
F153 : 10A 125V
F154 : 10A 125V
F101 : 8A 125V
F153 : 10A 125V
F154 : 10A 125V
Full Fuse Replacement Marking
FUSE CAUTION
Le symbole graphique (Ce symbole signifie
fusible de type a fusion rapide.)
POUR UNE PROTECTION CONTINUE CONTRE
DES RISQUES D'INCENDIE, REMPLACER
SEULEMENT PAR UN FUSIBLE DU MEME TYPE ;
Marquage Pour Le Remplacement
Complet De Fusible
PRECAUTIONS SUR LES FUSIBLES
doit etre interprete comme suit ;
^
fast blow type / type a fusion rapide
B5203
CN274
B5504
B5218
B5220
FC157
D151
D153
B5605
D514
B5221
FC158
B5701
B5303
FC156
C164
B5224
B5223
B5304
B5222
B5606 B5802
B5305
B5106
C523
C512
D152
FC155
D154
C163
B5302
B5040
D550 D549
B5202
B5001
B5112
B5101
B5901
B5204
B5002
B5205
C503
D506
B5206 B5207
D541
B5208
B5003
B5502
B5402
D601
C3715
R3727
R3720
B5035
C3720
B5036
D3706
B5219
C3716
D3708
Q3704
D3707
B5406
B5102
B5021
B5022
B2214
C3504
B5024
C3502
B5025
C161
C162
D3502
B2215
L2102
R2115
B5043
D3501
C3503
D510
B5041
D551
C3602
C3604
D3602
B5042
D3601
B2023
CN372
C101
FC102
D101
FC101
RY101
D515
D516
D535
CN502
R3719
D3703
C3721
R685
R686
R555
CN151
CN371
CN101
FW501
S901
CN102
FC103 FC104
B5301
B5201
HS151
B5225
B5803
B5306
B5505
B5004
B5607
D901
L901
D902
D903
PC901
D992
B4701
P901
FC901
FC902
T901
B4301
C911
C908
C904
C992
C916
C912
C907
C905
C909
C903
C914
C913
R921
R951
R901
B4302
B4101
B4202
W914
C902
R922
B4146
TH901
D904
R903
D956
D4811
B4305
R4811
B4306
D4705
R4708
B4802 C4451
C4441
C4431
B4207
B4113
B4403
B4201
HS901
IC901
B4605
B4507
B4407
B4133
B4135
B4211
B4320
B4212
B4321
B4138
B4139
B4140
B4141
B4214
B4217
B4149
B4218
R973
Q982
B4150
B4151
R982
Q983
W921
C983
D981
slow blow type / type a fusion lent

(No.MB506)1-7
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

1-8 (No.MB506)
SECTION 3
DISASSEMBLY
3.1 Main body
3.1.1 Removing the top cover
(See Fig.1 and 2)
(1) Remove the four screws A(both side) attaching the top
cover. (See Fig.1)
(2) Remove the three screws Battaching the top cover from
back side. (See Fig.2)
Fig.1
Fig.2
A
A
B
F
G
J
G

(No.MB506)1-9
3.1.2 Removing the front panel assembly
(See Fig.3 to 5)
(1) Disconnect the card wire from front board connected
CN450 and CN451 of main board. (See Fig.3)
(2) Disconnect the card wire from operation board connected
CN457 of main board. (See Fig.3)
(3) Remove the one screw Cattaching the grand wire of front
board. (See Fig.3)
(4) Remove the two screws Dattaching the front panel from
bottom side. (See Fig.4)
(5) Disengage the hook aof bottom side and hook bof both
side of front panel assembly. (See Fig.4 and 5)
Fig.3
Fig.4
Fig.5
CCN451 CN457 CN450
D
a
b
b

1-10 (No.MB506)
3.1.3 Removing the DVD mechanism assembly
(See Fig. 6 and 7)
(1) Disconnect the card wire from DVD mechanism assembly
connected to CN402, CN403 and CN404 of main board.
(See Fig.6)
(2) Disconnect the connector wire from USB jack board con-
nected to CN811 of DVD module board. (See Fig.7)
(3) Remove the four screws Eattaching the DVD mechanism
assembly. (See Fig.6)
Fig.6
Fig.7
3.1.4 Removing the tuner pack
(See Fig.2 and 8)
(1) Disconnect the card wire from tuner pack connected to
CN410 of main board. (See Fig.8)
(2) Remove the two screws Fattaching the tuner pack. (See
Fig.2)
Fig.8
CN402
CN403
CN404
E
E
CN811
CN410

(No.MB506)1-11
3.1.5 Removing the audio and digital input board
(See Fig.2 and 9)
(1) Remove the two screws Gattaching the audio and digital
input board. (See Fig.2)
(2) Disconnect the card wire from main board connected to
CN102. (See Fig.9)
(3) Disconnect the connection board from CN101, and then
shift to direction the arrow and take off the audio and digital
input board. (See Fig.9)
Fig.9
3.1.6 Removing the USB jack board
(See Fig.10)
(1) Remove the one screw Hattaching the USB jack board.
(See Fig.10)
Fig.10
CN102
CN101
H

1-12 (No.MB506)
3.1.7 Removing the main board
(See Fig.2 and 11)
(1) Remove the five screws Jattaching the main board from
back side. (See Fig.2)
(2) Remove the four screws Kattaching the main board. (See
Fig.11)
Fig.11
3.1.8 Removing the operation board
(See Fig.12 and 13)
(1) Pull out the volume knob.
(2) Remove the one screw Lattaching the volume. (See
Fig.12)
(3) Remove the one screw Mattaching the bracket board.
(See Fig.13)
(4) Remove the three screws Nattaching the operation board.
(See Fig.13)
3.1.9 Removing the front board
(See Fig.13)
(1) Remove the seven screws Pattaching the front board.
Fig.12
Fig.13
K
L
P
N
M

(No.MB506)1-13
3.2 Subwoofer
3.2.1 Removing the amplifier assembly
(See Fig.1 to 4)
(1) Remove the eight screws Aattaching the amplifier assem-
bly from bottom side. (See Fig.1)
(2) Remove the two screws B, one screw Cand six screws D
attaching the rear panel. (See Fig.2)
(3) Disconnect the connector wire from fan motor connected to
CN371. (See Fig.3)
(4) Pull out the amplifier assembly and disconnect the connec-
tor wire from speaker connected to CN274. (See Fig.4)
Fig.1
Fig.2
Fig.3
Fig.4
A
A
B
C
D
D
D
CN371
CN274

1-14 (No.MB506)
3.2.2 Removing the mother board
(See Fig.5 and 6)
(1) Disconnect the connector wire from power transformer
connected to CN102 and CN151. (See Fig.5)
(2) Disconnect the power cord connected to CN101. (See
Fig.5)
(3) Remove the four screws Eattaching the heat sink bracket.
(See Fig.5)
(4) Remove the two screws Fattaching the mother board.
(See Fig.5)
(5) Disconnect the connector connected to amplifier board
CN372, CN501 and CN502. (See Fig.6)
Fig.5
Fig.6
3.2.3 Removing the amplifier board
(See Fig.7)
(1) Remove the nine screws Gattaching the amplifier board.
Fig.7
CN101
CN102
CN151
E
E
F
CN372 CN501 CN502
G

(No.MB506)1-15
3.2.4 Removing the heat sink
(See Fig.8 and 9)
(1) Remove the three screws Hattaching the heat sink from
bottom side of amplifier board. (See Fig.8)
(2) Remove the four screws Jattaching the power IC. (See
Fig.9)
Fig.8
Fig.9
H
J

1-16 (No.MB506)
3.3 DVD mechanism section
3.3.1 Removing the DVD module board
(See Fig.1)
(1) Disconnect the card wire connected to CN451, CN452,
CN453, CN101 and CN102 of DVD module board. (See
Fig.1)
(2) Remove the two screws Aattaching the DVD module
board. (See Fig.1)
Fig.1
3.3.2 Removing the PWB bracket and wire holder
(See Fig.2)
(1) Remove the two screws Battaching the wire holder.
(2) Remove the one screw Cattaching the PWB bracket.
Fig.2
AA
CN101
CN452
CN201
CN453
CN451
CPWB BKTWire holder
B

(No.MB506)1-17
3.3.3 Removing the tray assembly
(See Fig.3 to 7)
(1) Remove the two screws Dfrom the top cover and release
the two joints aon both sides of the body. (See Fig.3)
(2) Remove the top cover with the two rods attached to the top
cover and lifter assembly respectively. (See Fig.4)
(3) Remove the open detect lever on the left side of the body.
(See Fig.5)
(4) Push part bof the slide (R) assembly on the right side of
the body to unlock the tray assembly. Draw out the trays to-
ward the front. (See Fig.6)
Attention:
The tray can be locked if all tray assemblies are at-
tached.
(5) From top of the body, move the stopper tab cin the direc-
tion of the arrow and release. Pull out the tray assemblies
from the body. (See Fig.6 and 7)
Caution:
Remove the tray assembly from top tray 5 in order.
Attention:
When reattaching the sub tray of the tray assembly, or when
removing the DVD mechanism inside, refer to another section.
Fig.3
Fig.4
Fig.5
Fig.6
Fig.7
Top cover
Lifter assembly
Rod
D
a
a
D
a
Rod Top cover
Lifter assembly
a
Open detect leve
r
b
Tray assembly
(Tray 5)
c

1-18 (No.MB506)
3.3.4 Removing the motor board
(See Fig.8)
(1) Remove the two screws Dattaching the motor board.
(2) Remove the spacer fixing the motor board and tray switch-
board, and disconnect the connector CN2 on the motor
board.
(3) Disconnect the card wire from connector CN1 on the motor
board.
Caution:
When reconnection the card wire, let the card wire through the
slot dof the motor board and attach it to bottom of the body us-
ing a double face tape.
Fig.8
3.3.5 Removing the DVD tramecha assembly
(See Fig.9)
(1) Remove the three screws Eattaching the DVD tramecha
assembly.
Fig.9
Double
DD
d
CN1
CN2
Soldering point
Motor
face tape
Card wire
DVD Tramecha assembly
E
E
E

(No.MB506)1-19
3.3.6 Removing the pickup
(See Fig.10 and 11)
(1) Remove the one screw Fand Gattaching the spring hold-
er. (See Fig.10)
(2) Lift up the shaft from the tramecha assembly. (See Fig.10)
(3) Remove the two screws Hattaching the lack. (See Fig.11)
Fig.10
Fig.11
Pickup assembly
Mecha base
e
F
G
Shaft
Spring holder
Shaft
Spring
holder
H

1-20 (No.MB506)
3.3.7 Removing the side (L)
(See Fig.12 to 14)
(1) Remove the two screws Jattaching the side (L). (See
Fig.12)
(2) From the side of body, remove the spacer fixing the tray
switch board and motor board. Disconnect connector CN3
on the tray switch board and detach the side (L) upward.
(See Fig.13)
(3) Remove the one screw Kattaching the tray switch board.
(See Fig.14)
(4) Push the joint tab dof the side (L) in the direction of the ar-
row and remove the tray switch board outward, then re-
lease joint f. (See Fig.14)
Fig.12
Fig.13
Fig.14
Side (L)
J
J
Space
r
CN3
Side (L)
JJ
e
f
K
Side (L)
Tray switch board