JVC TH-C3 User manual

SERVICE MANUAL
COPYRIGHT © 2005 Victor Company of Japan, Limited No.MB358
2005/4
DVD DIGITAL THEATER SYSTEM
MB35820054
TH-C3
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-30
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35
Area suffix
TH-C3
J ---------------------------- U.S.A.
C ------------------------- Canada
(XV-THC3)
(SP-PWC3)
(SP-THC3F)
(SP-THC3C) (SP-THC3S)

1-2 (No.MB358)
SPECIFICATION
Center unit (XV-THC3)
*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-PWC3)
Audio section Total Harmonic Distortion 0.02%*1
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
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 16 W (at operation)
1.3 W (in standby mode)
Dimensions (W ×H ×D) 400 mm ×85 mm ×399 mm
(15-3/4 inches ×3-3/8 inches ×15-3/4 inches)
Mass 4.2 kg (9.3 lbs)
Amplifier section Front 140W per channel, RMS at 4 Ωat 1 kHz, with 10 % total harmonic distortion.
Center/Surround 130W per channel, RMS at 4 Ωat 1 kHz, with 10 % total harmonic distortion.
Subwoofer 140 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
General Power Requirements AC 120 V , 60 Hz
Power Consumption 135 W (at operation)
0 W (in standby mode)
Dimensions (W ×H ×D) 169 mm ×411 mm ×451 mm
(6-11/16 inches ×16-3/16 inches ×17-13/16 inches)
Mass 11.5 kg (25.4 lbs)

(No.MB358)1-3
Satellite Speakers (SP-XTHC3)
Designs & specifications are subject to change without notice.
Front speakers (SP-THC3F) Speaker unit 8.0 cm (3-3/16 inches)
1.5 cm (5/8 inches)
Bass-reflex, Magnetically Shielded
Power Handling Capacity 140 W
Impedance 4 Ω
Frequency Range 80 Hz to 20 kHz
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-THC3C) Speaker unit 8.0 cm (3-3/16 inches)
1.5 cm (5/8 inches)
Bass-reflex, Magnetically Shielded
Power Handling Capacity 140 W
Impedance 4 Ω
Frequency Range 80 Hz to 20 kHz
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-THC3S) Speaker unit 8.0 cm (3-3/16 inches)
Bass-reflex
Power Handling Capacity 140 W
Impedance 4 Ω
Frequency Range 80 Hz to 20 kHz
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

1-4 (No.MB358)
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.MB358)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
DVD pickup
DVD changer mechanism assembly

1-6 (No.MB358)
1.8 Importance administering point on the safety
Caution: For continued protection against risk of fire,
replace only with same type 1.6 A/125 V for F901,
8A/125V for F101,10 A/125 V for F153 and F154.
This symbol specifies the type of fast operating fuse.
Precaution: Pour la protection continue contre les
risques d'incendie, remplacer uniquement par le
meme type: fusible 1.6 A/125 V pour le F901,
8A/125V pour le F101,10 A/125 V pour le F153 et F154.
Ce symbole specifie le type de fusible a action rapide.
^
Power supply board
(Center unit)
Mother board
(Subwoofer)

(No.MB358)1-7
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

1-8 (No.MB358)
SECTION 3
DISASSEMBLY
3.1 Main body section
3.1.1 Removing the metal cover
(See Figs. 1 to 4)
(1) From the both sides of the main body, remove the four
screws Aattaching the metal cover. (See Figs. 1 and 2.)
(2) From the back side of the main body, remove the three
screws Battaching the metal cover. (See Fig. 3.)
(3) Lift the rear section of the metal cover in the direction of the
arrow while extending the lower sections of the metal cov-
er, release the seven claws ausing a longer screwdriver
from the inside as required. (See Fig. 4.)
Note:
Do not damage any parts and boards inside the main body
when releasing the claws ausing a longer screwdriver.
Fig.1
Fig.2
Fig.3
Fig.4
Metal cover
A
Metal cover
A
Metal cove
r
B
Metal cover
Claws aClaws a

(No.MB358)1-9
3.1.2 Removing the front panel assembly
(See Figs. 5 and 6)
• Prior to performing the following procedures, remove the metal
cover.
(1) From the top side of the main body, disconnect the parallel
wires from the connectors (CN456, CN457) on the main
board. (See Fig. 5.)
(2) Disconnect the card wires from the connectors (CN450,
CN460) on the main board. (See Fig. 5.)
(3) Remove the screw Cattaching the earth wires to the main
board. (See Fig. 5.)
Reference:
When attaching the screw C, attach the earth wires with
it. (See Fig. 5.)
(4) From the bottom side of the main body, remove the three
screws Dattaching the front panel assembly. (See Fig. 6.)
(5) From the both and bottom sides of the main body, remove
the front panel assembly in the direction of the arrow while
releasing the joints band c. (See Fig. 6.)
Fig.5
Fig.6
CN456
Main board
C
Card wire
CN460
Earth
wires
Front panel assembly
CN457
Parallel wires
CN450
Card wire
D
Joint cJoint bJoint b
Front panel assembly

1-10 (No.MB358)
3.1.3 Removing the DVD changer mechanism assembly
(See Fig. 7)
• Prior to performing the following procedures, remove metal
cover and front panel assembly.
(1) From the top side of the main body, remove the screw Eat-
taching the wire protection board to the main board.
(2) Take out the wire protection board, and disconnect the
card wires from the connectors (CN401 to CN403) on the
main board.
Reference:
When attaching the wire protection board, attach the
wire protection board after connecting the card wires to
the connectors (CN401 to CN403) on the main board.
(3) Remove the four screws Fattaching the DVD changer
mechanism assembly on the bottom chassis.
(4) Take out the DVD changer mechanism assembly in the up-
ward direction.
Reference:
When attaching the DVD changer mechanism assembly, align
the holes of the DVD changer mechanism assembly to the pro-
jections don the bottom chassis.
Fig.7
3.1.4 Removing the rear panel
(See Fig. 8)
• Prior to performing the following procedures, remove the metal
cover.
(1) From the back side of the main body, remove the screw G
and eleven screws Hattaching the rear panel.
Fig.8
Main
board
CN402
Bottom
chassis
DVD changer mechanism assembly
Card wires
Wire protection board
F
F
F
Projections dCN401 CN403
E
G
HRear panel
H

(No.MB358)1-11
3.1.5 Removing the audio & digital input board
(See Figs. 9 and 10)
• Prior to performing the following procedures, remove the metal
cover.
(1) From the top side of the main body, disconnect the card
wires from the connectors (CN411, CN412) on the main
board. (See Fig. 9.)
(2) Remove the screw Jattaching the earth wires to the main
board. (See Fig. 9.)
Reference:
When attaching the screw J, attach the earth wires with
it. (See Fig. 9.)
(3) From the back side of the main body, remove the screw K
and two screws Lattaching the audio & digital input board
to the rear panel. (See Fig. 10.)
(4) Move the audio & digital input board in the direction of the
arrow, and release the claw eof bracket board. (See Fig.
9.)
(5) Take out the audio & digital input board from the main
body.
3.1.6 Removing the tuner
(See Figs. 9 and 10)
• Prior to performing the following procedures, remove the metal
cover.
(1) From the top side of the main body, disconnect the card
wire from the connector CN1 on the tuner. (See Fig. 9.)
(2) From the back side of the main body, remove the two
screws Mattaching the tuner to the rear panel. (See Fig.
10.)
(3) Take out the tuner from the main body.
3.1.7 Removing the power supply board
(See Figs. 9 and 10)
• Prior to performing the following procedures, remove the metal
cover.
(1) From the top side of the main body, disconnect the parallel
wires from the connectors (CN404 to CN407) on the main
board. (See Fig. 9.)
(2) Remove the three screws Nattaching the power supply
board. (See Fig. 9.)
(3) From the back side of the main body, remove the screw P
attaching the power supply board to the rear panel. (See
Fig. 10.)
(4) Take out the power supply board from the main body.
Reference:
Remove the rear panel as required. (See "3.1.4 Removing the
rear panel")
Fig.9
Fig.10
Power supply board
N
Bracket
board
Craw e
Earth
wire
Parallel wires
CN404
J
N
CN405
Tuner
CN1
Card wire
Audio & digital input board
CN407
CN406
Card wires
Main board
CN411
CN412
KP
Rear panel
ML

1-12 (No.MB358)
3.1.8 Removing the main board
(See Fig. 11)
• Prior to performing the following procedures, remove the metal
cover, rear panel, audio & digital input board and tuner.
(1) From the top side of the main body, remove the screw Q
attaching the bracket board and take the bracket board.
(2) Remove the screw Rand screw R' attaching the main
board on the bottom chassis.
Reference:
When attaching the screw R', attach the wire protection
board with it.
(3) Take out the wire protection board, and disconnect the
card wires from the connectors (CN401 to CN403) on the
main board.
Reference:
When attaching the wire protection board, attach the
wire protection board after connecting the card wires to
the connectors (CN401 to CN403) on the main board.
(4) Disconnect the card wires from the connectors (CN450 and
CN460) on the main board.
(5) Disconnect the parallel wires from the connectors (CN404
to CN407, CN456 and CN457) on the main board.
(6) Take out the main board from the main body.
Fig.11
Main board
R
Q
R'
Bracket
board
CN404
CN407
CN406
Bottom chassis
CN405
CN402CN401
Wire protection board
CN457
CN460 CN456
CN403
CN450

(No.MB358)1-13
3.2 Front panel assembly section
• Prior to performing the following procedures, remove the front panel assembly from the main body. (See "Removing the front panel
assembly")
3.2.1 Removing the phone jack board
(See Fig. 1)
(1) From the inside of the front panel assembly, remove the
screw Aattaching the phone jack board.
(2) Take out the phone jack board from the front panel assem-
bly.
3.2.2 Removing the bracket board
(See Fig. 1)
(1) From the inside of the front panel assembly, remove the
two screws Battaching the bracket board.
Reference:
When attaching the connect board, align the projections
of the bracket board to the slots aand bof the front panel
assembly.
(2) Take out the bracket board from the front panel assembly. Fig.1
3.2.3 Removing the operation board
(See Fig. 2)
• Prior to performing the following procedures, remove the
bracket board.
(1) From the inside of the front panel assembly, remove the
three screws Cattaching the operation board.
Reference:
When attaching the operation board, align the projec-
tions cof the front panel assembly to the holes of the op-
eration board.
(2) Take out the operation board.
3.2.4 Removing the power key board
(See Fig. 2)
• Prior to performing the following procedures, remove the
bracket board.
(1) From the inside of the front panel assembly, remove the
two screws Dattaching the power key board.
(2) Take out the power key board and remove the solder from
the soldered point dto remove the parallel wire.
Fig.2
Bracket board
BB
AFront panel assembly
Headphone board
Slot bSlot a
DC
Front panel assembly
Power key board
Operation board Solder section d
Projections c

1-14 (No.MB358)
3.2.5 Removing the front board
(See Figs. 3 and 4)
• Prior to performing the following procedures, remove the
phone jack board, bracket board and operation board.
(1) From the front side of the front panel assembly, pull out the
volume knob in the direction of the arrow. (See Fig. 3.)
(2) From the inside of the front panel assembly, remove the six
screws Eattaching the front board. (See Fig. 4.)
(3) Take out the front board and remove the solder from the
soldered point eto remove the parallel wire. (See Fig. 4.)
Fig.3
Fig.4
Front panel assembly
Volume knob
Metal cover
Claws a
Claws a

(No.MB358)1-15
3.3 DVD changer mechanism assembly section
Remove the DVD changer mechanism assembly from the main body. (See "Removing the DVD changer mechanism assembly".)
3.3.1 Removing the tray assemblies
(See Figs.1 to 5)
(1) From the top side of the main body, remove the two screws
Afrom the top cover and release the two joints aon the
both sides of the DVD changer mechanism assembly. (See
Figs.1 and 2.)
(2) Remove the two rods from the top cover and remove the
top cover from the lifter assembly. (See Figs.1 and 2.)
(3) Remove the open det. lever on the left side of the DVD
changer mechanism assembly. (See Fig.3.)
(4) From the right side of the DVD changer mechanism as-
sembly, draw out the tray assemblies toward the front while
pushing the part bof the side (R) assembly. (See Figs.4
and 5.)
Note:
The tray can be locked if all tray assemblies are at-
tached.
(5) From the topside of the DVD changer mechanism assem-
bly, move the stopper tabs cin the direction of the arrow
and release them. Pull out the tray assemblies from the
DVD changer mechanism assembly. (See Fig. 5.)
Note:
Remove the tray assembly from top tray 5 in order.
Reference:
When reattaching the tray assembly, or when removing the
disc remaining inside, refer to another section "3.3.15 Taking
out the disc in the play mode". Fig.1
Fig.2
Top cover
Lifter assembly
Rods
A
a
a
A
a
Rods Top cover
Lifter assembly
a

1-16 (No.MB358)
Fig.3
Fig.4
Fig.5
Open det. leve
r
b
Tray assemblies Side(R) assembly
c
Tray assembly

(No.MB358)1-17
3.3.2 Removing the DVD servo board
(See Figs.6 to 8)
Caution:
Solder the short land sections don the DVD pickup before dis-
connecting the card wire extending from the DVD pickup. If
you do not follow this instruction, the DVD pickup may be dam-
aged.
(1) From the topside of the DVD changer mechanism assem-
bly, solder the short land sections don the DVD pick up.
(See Fig.6.)
(2) From the bottom side of the DVD changer mechanism as-
sembly, disconnect the card wire from the connectors
(CN201, CN451) on the DVD servo board. (See Fig.7.)
Reference:
When connecting the card wire to the connector CN451,
pass it through the sections eon the DVD traverse
mechanism assembly. (See Fig.7.)
(3) Disconnect the wires from the connectors (CN452, CN453)
on the DVD servo board. (See Fig.7.)
(4) Remove the two screws Battaching the DVD servo board.
(See Fig.7.)
(5) From the reverse side of the DVD servo board, release the
lock of the connector CN101 in the direction of the arrow
and disconnect the card wire. (See Fig.8.)
Caution:
Unsolder the solders from the short land sections dafter reas-
sembling. (See Fig.6.)
3.3.3 Removing the switch board
(See Fig.7)
(1) From the bottom side of the DVD changer mechanism as-
sembly, remove the screw Cattaching the switch board on
the DVD changer mechanism assembly.
(2) Disconnect the wires from the connectors (CN452, CN453)
on the DVD servo board.
(3) Release the wires from the section fand remove the switch
board.
(4) Release the wires from the sections gand remove the
switch board.
Reference:
When reassembling, pass the wires through the sections (f, g)
as before.
Fig.6
Fig.7
Fig.8
DVD pickup
DVD changer mechanism assembly
d
C
DVD changer mechanism assembly
B
B
CN201
eCN453
CN451
Switch board
DVD traverse mechanism assembly
DVD servo board
f
g
CN452
DVD servo board CN101
Lock

1-18 (No.MB358)
3.3.4 Removing the motor board
(See Figs.9 and 10)
(1) From the top side of the DVD changer mechanism assem-
bly, remove the two belts from the motor pulleys. (See
Fig.9.)
Note:
Take care not to attach grease on the belt.
(2) Remove the two screws Dattaching the motors to the load-
er assembly. (See Fig.9.)
(3) From the bottom side of the DVD changer mechanism as-
sembly, remove the two screws E. (See Fig.10.)
(4) Disconnect the connector CN2 on the motor board from the
tray switch board and remove the motor board. (See
Fig.10.)
(5) Disconnect the card wire from the connector CN1 on the
forward side of the motor board. (See Fig.10.)
Note:
When connecting the card wire, let the card wire through the
slots hof the motor board. (See Fig.10.)
Reference:
You need not to remove the tray assemblies, and in such case,
move it.
3.3.5 Removing the motor
(See Fig. 10)
• Remove the motor board.
(1) From the reverse side of the motor board, unsolder the four
soldered sections ion the motor board.
(2) From the forward side of the motor board, remove the mo-
tors.
Fig.9
Fig.10
Motor Motor
Motor pulleys Loader assembly
Belt
Belt
D
D
E
h
CN2
Motors
i
CN1
E
Motor board
DVD changer mechanism assembly
Tray switch
board
Motors
Motor board

(No.MB358)1-19
3.3.6 Removing the DVD traverse mechanism assembly
(See Fig.11)
• Remove the tray assemblies and DVD servo board.
(1) From the bottom side of the DVD changer mechanism as-
sembly, remove the three screws Fattaching the DVD
traverse mechanism assembly.
(2) Remove the wires from the section j.
(3) Take out the DVD traverse mechanism assembly from the
DVD changer mechanism assembly.
Fig.11
F
F
j
F
DVD changer mechanism assembly
DVD traverse mechanism assembly

1-20 (No.MB358)
3.3.7 Removing the DVD pickup
(See Figs.12 to 14)
• Remove the tray assemblies, DVD servo board and DVD
traverse mechanism assembly.
(1) From the top side of the DVD traverse mechanism assem-
bly, release the lock of the connector on the DVD pickup
and disconnect the card wire in the direction of the arrow.
(See Fig.12.)
(2) Turn the screw shaft gear in the direction of the arrow 1 to
move the DVD pickup in the direction of the arrow 2. (See
Fig.12.)
(3) Remove the screw Gattaching the feed bracket and re-
move the feed bracket from the sections k. (See Fig.12.)
(4) Release the claw mof the thrust spring in the direction of
the arrow and remove the thrust spring. (See Fig.12.)
(5) Remove the guide shaft from the sections (n, p) on the
C.TM chassis. (See Fig.13.)
(6) Remove the section qof the DVD pickup. (See Fig.13.)
(7) Remove the two screws Hattaching the rack arm spring
and rack arm. (See Fig.14.)
(8) Pull the guide shaft from the DVD pickup in the direction of
the arrow. (See Fig.14.)
3.3.8 Attaching the DVD pickup
(See Figs.12 to 14)
(1) Attach the guide shaft to the DVD pickup and attach the
rack arm spring and rack arm with the screws H. (See
Fig.14.)
(2) Attach the section qof the DVD pickup to the C.TM chassis
first and attach the guide shaft to the sections (n, p). (See
Fig.13.)
Reference:
When attaching the guide shaft to the section p, attach it
under the rod spring. (See Fig.13.)
(3) Attach the thrust spring and feed bracket with the screw G.
(See Fig.12.)
(4) Turn the screw shaft gear in the direction of the arrow 1 to
move the DVD pickup in the direction of the arrow 2. (See
Fig.15.)
(5) Connect the card wire to the connector on the DVD pickup.
(See Fig.15.)
Fig.12
Fig.13
2
1
Thrust spring
Thrust spring
DVD pickup
Connector
Screw shaft gear
G
DVD traverse mechanism assembly
k
m
Feed bracket
DVD pickup
Guide shaft
C.TM chassis
n
p
Rod spring
q
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