JVC UXGD-6 Service manual

SERVICE MANUAL

MICRO COMPONENT SYSTEM

MB40820056

UX-GD6S,UX-GD6M

CA-UXGD6S CA-UXGD6MSP-UXGD6S SP-UXGD6S SP-UXGD6M SP-UXGD6M

SUPER VIDEO

UX-GD6S

Area suffix

A ------------------------ Australia
US ------------------------ Singapore
UT ---------------------------- Taiwan
UW ----------- Brazil,Mexico,Peru
UX -------------------- Saudi Arabia
UG --- Turkey,South Africa,Egypt
UN ----------------------------- Asean

Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)

UB ---------------------- Hong Kong
UF ------------------------------ China
UP ----------------------------- Korea
UT ---------------------------- Taiwan
UG --- Turkey,South Africa,Egypt

UX-GD6M

Area suffix

TABLE OF CONTENTS

1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35

COPYRIGHT © 2005 Victor Company of Japan, Limited

No.MB408

2005/6

SPECIFICATION

CA-UXGD6S (for UX-GD6S)/CA-UXGD6M (for UX-GD6M)

Amplifier section Output Power 100 W (50 W + 50 W) at 6 Ω (10% THD)

Audio Input AUX 400 mV/50 kΩ (at "AUX LVL1")

200 mV/50 kΩ (at "AUX LVL2")

Digital output DVD OPTICAL DIGITAL OUT: -21 dBm to -15 dBm (660 nm ±30 nm)

Video output Color system: NTSC or PAL (interlaced/progressive)

VIDEO (composite) 1 V(p-p)/75Ω
S-VIDEO Y (luminance): 1 V(p-p)/75Ω

C (chrominance, burst): NTSC: 0.286 V(p-p)/75Ω, PAL: 0.3 V(p-p)/75Ω

COMPONENT (Y): 1 V(p-p)/75Ω

(PB/PR): 0.7 V(p-p)/75Ω

Speaker impedance 6Ω - 16Ω

Tuner section FM tuning range 87.50 MHz - 108.00 MHz

AM (MW) tuning range 531 kHz - 1 710 kHz (at 9 kHz intervals)

530 kHz - 1 710 kHz (at 10 kHz intervals)
[For Saudi Arabia only]
531 kHz - 1 602 kHz (at 9 kHz intervals)
530 kHz - 1 600 kHz (at 10 kHz intervals)

Tape section Frequency response 60 Hz - 14 000 Hz

Wow and flutter 0.15 % (WRMS)

Disc player section Region codes Middle East: 2

South East Asia: 3
Central and South America: 4

Playable disc DVD Video/DVD Audio

CD/VCD/SVCD
CD-R/CD-RW (CD/SVCD/VCD/MP3/JPEG format)
DVD-R (DVD Video format)
DVD-RW/DVD-ROM/DVD-RAM (DVD-VR format)

Dynamic range 80 dB

Horizontal resolution 500 lines

Wow and flutter Immeasurable

General Power requirement AC 110 V/AC 127V/AC 220 V - AC 230 V

(adjustable with the voltage selector), 50 Hz/60 Hz

Power consumption 95 W (at operation)

4 W (on standby)

Dimensions (approx.) 170 mm × 240 mm × 361 mm (W/H/D)

Mass (approx.) 5.6 kg

Speakers-SP-UXGD6S (for UX-GD6S)

Speaker units Tweeter 4 cm cone × 1

Woofer 13.5 cm cone × 1
Impedance 6Ω
Dimensions (approx.) 165 mm × 283.5 mm × 249 mm (W/H/D)

Mass (approx.) 2.8 kg each

Speakers-SP-UXGD6M (for UX-GD6M)

Speaker units Tweeter 4 cm cone × 1

Woofer 12 cm cone × 1
Impedance 6Ω
Dimensions (approx.) 145 mm × 240 mm × 201 mm (W/H/D)

Mass (approx.) 2.2 kg each

Designs & specifications are subject to change without notice.

1-2 (No.MB408)

SECTION 1

PRECAUTION

1.1 Safety Precautions

(1) This design of this product contains special hardware and

many circuits and components specially for safety purpos­es. 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 per­formed 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 characteris­tics are often not evident from visual inspection nor can the
protection afforded by them necessarily be obtained by us­ing replacement components rated for higher voltage, watt­age, etc. Replacement parts which have these special
safety characteristics are identified in the Parts List of Ser­vice 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 charac­teristics 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 reassem­bling.

(5) Leakage shock hazard testing

After reassembling the product, always perform an isola­tion check on the exposed metal parts of the product (an­tenna 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, particular­ly any exposed metal part having a return path to the
chassis, to a known good earth ground. Any leakage cur­rent 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, 1,000Ω per volt or more sensitivity
in the following manner. Connect a 1,500Ω 10W 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.).

AC VOLTMETER
(Having 1000
ohms/volts,
or more sensitivity)

0.15 F AC TYPE

Place this
probe on

1500 10W

Good earth ground

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 pre­forming 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)

each exposed
metal part.

(No.MB408)1-3

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.

(caption)
Anti-static wrist strap

1M

Conductive material
(conductive sheet) or iron palate

(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.

Connector

Short land section

DVD pickup

1-4 (No.MB408)

Card wire

Traverse mechanism assembly

1.8 Important for laser products

!

1.CLASS 1 LASER PRODUCT

2.DANGER : Invisible laser radiation when open and inter

lock failed or defeated. Avoid direct exposure to beam.

3.CAUTION : There are no serviceable parts inside the

Laser Unit. Do not disassemble the Laser Unit. Replace

the complete Laser Unit if it malfunctions.

4.CAUTION : The CD,MD and DVD player uses 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

WARNING LABEL

CAUTION : Visible and Invisible

laser radiation when open and
interlock failed or defeated.
AVOID DIRECT EXPOSURE TO
BEAM. (e)

CLASS 1
LASER PRODUCT

ADVARSEL : Synlig og usynlig
laserstråling når maskinen er
åben eller interlocken fejeler.
Undgå direkte eksponering til
stråling. (d)

CAUTION : Visible and Invisible
laser radiation when open and
interlock failed or defeated.
AVOID DIRECT EXPOSURE TO
BEAM. (e)

VARNING : Synlig och
osynling laserstrålning när
den öppnas och spärren är
urkopplad. Betrakta ej
strålen. (s)

VARNING : Synlig och
osynling laserstrålning när
den öppnas och spärren är
urkopplad. Betrakta ej
strålen. (s)

VARO : Avattaessa ja suojalukitus
ohitettuna tai viallisena olet alttiina
näkyvälle ja näkymättömälle
lasersäteilylle. Vältä säteen
kohdistumista suoraan itseesi. (f)

ADVARSEL : Synlig og usynlig
laserstråling når maskinen er
åben eller interlocken fejeler.
Undgå direkte eksponering til
stråling. (d)

VARO : Avattaessa ja suojalukitus
ohitettuna tai viallisena olet alttiina
näkyvälle ja näkymättömälle
lasersäteilylle. Vältä säteen
kohdistumista suoraan itseesi. (f)

(No.MB408)1-5

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

1-6 (No.MB408)

SECTION 3

A

DISASSEMBLY

3.1 Main body section

3.1.1 Removing the metal cover
(See Figs.1 to 3)

(1) From the back side of the main body, remove the six

screws A attaching the metal cover. (See Fig.1.)

(2) From the both sides of the main body, remove the two

screws B attaching the metal cover. (See Figs.2 and 3.)

(3) From the top sides of the main body, remove the two

screws B attaching the metal cover. (See Figs.2 and 3.)

(4) Remove the metal cover in the direction of the arrow while

extending the lower sections of the metal cover. (See
Figs.2 and 3.)

Reference:

Remove the microphone volume knob from the top side of the
metal cover at the same time.

Metal cover

A

A

Metal cover

B

Fig.1

B

Fig.2

Microphone volume knob

A

B

Metal cover

B

Fig.3

(No.MB408)1-7

3.1.2 Removing the front panel assembly
(See Figs.4 to 6)

• Remove the metal cover.

(1) From the bottom side of the main body, remove the two

screws C attaching the front panel assembly. (See Fig.4.)

(2) From the right side of the main body, push the slide cam

and pull the tray assembly out of the main body in the di­rection of the arrow 1. (See Fig.5.)

(3) Remove the tray fitting from the tray assembly in the direc-

tion of the arrow 2 and push the tray assembly in the main
body. (See Fig.5.)

(4) Release the claws a and claws b and remove the front pan-

el assembly toward the front. (See Figs.4 to 6.)

(5) Disconnect the card wire from the connector CN730

micom board. (See Fig.6.)

on the

a

a

Front panel assembly

Fig.4

C

C

Front panel assembly

2

1

Tray assembly

Tray fitting

b

Slide cam

Fig.5

Micom board

1-8 (No.MB408)

CN730

Fig.6

b

3.1.3 Removing the rear cover

(See Fig.7)

• Remove the metal cover.

(1) From the back side of the main body, remove the screw D

attaching the rear cover.

(2) Release the joint sections c and remove the rear cover.

D

Fig.7

Rear cover

c

c

(No.MB408)1-9

3.1.4 Removing the cassette chassis assembly
(See Figs.8 to 10)

• Remove the metal cover and rear cover.

(1) Remove the two screws E attaching the cassette chassis

assembly. (See Fig.8.)

(2) From the both sides of the main body, release the joints d

and lift the cassette chassis assembly in the direction of the
arrow. (See Figs.9 and 10.)

(3) From the right side of the main body, disconnect the card

wires from the connectors (CN701
foraward side of the micom board. (See Fig.10.)

, CN702, CN720) on the

E

Fig.8

Cassette chassis assembly

d

Fig.9

Cassette chassis assembly

CN702

d

Micom board

Fig.10

CN720

CN701

1-10 (No.MB408)

3.1.5 Removing the tuner

(See Figs.11 and 12)

• Remove the metal cover, rear cover and cassette chassis as-

sembly.
(1) From the back side of the main body, remove the two

screws F attaching the tuner to the rear panel. (See
Fig.11.)

(2) Disconnect the card wire from the connector CN1

tuner. (See Fig.12.)

on the

F

Rear panel

Fig.11

Card wire

Tuner

Tuner

CN1

Fig.12

(No.MB408)1-11

3.1.6 Removing the rear panel
(See Fig.13)

• Remove the metal cover and rear cover.

(1) Remove the fifteen screws G attaching the rear panel.
(2) Remove the two screws H attaching the rear panel. [Only

for US version]

(3) Release the joint sections e and remove the rear panel.

G

G

Rear panel

G

H

3.1.7 Removing the video board
(See Fig.14)

• Remove the metal cover, rear cover, cassette chassis assem-

bly, tuner and rear panel.

Reference:

Disconnect the card wire from the connector CN1
as required.
(1) From the top side of the main body, disconnect the card

wire from connector CN303

(2) Disconnect the card wire from the connector CN710

micom board.

(3) Take out the video board from the main body.

on the amplifier board.

on the tuner

on the

CN710

Micom board

e

Video board

Fig.13

CN303

e

Amplifier board

1-12 (No.MB408)

Fig.14

3.1.8 Removing the AC board

(See Fig.15)

• Remove the metal cover, rear cover and cassette chassis as-

sembly.
(1) From the back side of the main body, remove the two

screws J.

(2) From the left side of the main body, remove the screw K

and screw M attaching the AC board.

(3) Disconnect the connector CN902

this side.

(4) From the forward side of the AC board, remove the tie band

fixing the power cord and disconnect the power cord from
the connector CN901

Reference:

After connecting the power cord to the connector CN901
fix it with a new tie band as before.

(5) Disconnect the wires from the connectors (CN903

on the AC board.

Reference:

After connecting the wire to the connector CN904
with the wire holder as before.

(6) Take out the AC board from the main body.

Reference:

When attaching the AC board, insert the edge of the AC
board in the slot f of the rear panel as before.

on the AC board.

on the AC board toward

, CN904)

, fix it

f

CN904

AC board

CN903

Rear panel

,

CN904

Wire holder

AC board

J

CN902

AC board

Power cord

K

CN901

Tie band

M

Fig.15

(No.MB408)1-13

3.1.9 Removing the micom board
(See Figs.16 and 17)

• Remove the metal cover, front panel assembly, rear cover and

cassette chassis assembly.
(1) From the back side of the main body, remove the two

screws N attaching the micom board to the rear panel. (See
Fig.16.)

(2) From the right side of the main body, remove the screw P

attaching the micom board. (See Fig.17.)

(3) Disconnect the connectors (CN200

board toward this side. (See Fig.17.)

(4) From the forward side of the micom board, disconnect the

card wires from the connectors (CN220
on the micom board. (See Fig.17.)

(5) Disconnect the wire from the connector CN230

com board. (See Fig.17.)

Reference:

When connecting the wire to the connector CN230
with the wire holder as before. (See Fig.17.)

(6) Take out the micom board from the main body.

Reference:

When attaching the micom board, insert the edge of the
micom board in the slot g of the rear panel as before.
(See Fig.17.)

, CN210) on the micom

, CN700, CN710)

on the mi-

, fix it

Micom board

N

Rear panel

Fig.16

g

Micom board

CN230

Wire holder

CN220

CN710

P

Fig.17

CN230

CN210

Micom board

Rear panel

CN700

CN200

1-14 (No.MB408)

3.1.10 Removing the speaker board

(See Fig.18)

• Remove the metal cover, rear cover and rear panel.

(1) From the right side of the main body, disconnect the con-

nector CN310

(2) Remove the speaker board from the joint section h in the

direction of the arrow.

3.1.11 Removing the amplifier board

(See Fig.19)

• Remove the metal cover, front panel assembly, rear cover,

cassette chassis assembly, tuner, rear panel, video board, AC
board, micom board and speaker board.
(1) From the top side of the main body, disconnect the card

wires from the connectors (CN304
er board.

(2) Disconnect the parallel wire from the connector CN308 on

the amplifier board.

(3) Remove the wire holders fixing the wires and remove the

wires from the slot j.

Reference:

When connecting the wires, pass them through the slot j
of the amplifier board and fix them with the wire holders
as before.

(4) Remove the two screws Q and remove the amplifier board.

on the speaker board toward this side.

, CN307) on the amplifi-

Speaker board

CN304

Q

h

Fig.18

CN307

CN310

CN308

Q

Amplifier board

j

Fig.19

Wire holders

(No.MB408)1-15

3.1.12 Removing the heat sink
(See Fig.20)

• Remove the metal cover, front panel assembly, rear cover,

cassette chassis assembly, tuner, rear panel, video board, AC
board, micom board, speaker board and amplifier board.
(1) From the forward side of the amplifier board, remove the

four screws R.

(2) Remove the support board 1, support board 2 and IC

bracket.

(3) Remove the heat sink from the amplifier board.

Heat sink

R

Support board 2

IC bracket

3.1.13 Removing the regulator board
(See Fig.21)

• Remove the metal cover, front panel assembly, rear cover,

cassette chassis assembly, tuner, rear panel, video board, AC
board, micom board, speaker board, amplifier board and heat

sink.
Disconnect the connector CN801
amplifier board in the direction of the arrow.

on the regulator board from the

R

Support board 1

Amplifier board

Fig.20

Regulator board

CN801

Amplifier board

Fig.21

1-16 (No.MB408)

3.1.14 Removing the power transformer

r

(See Fig.22)

• Remove the metal cover, front panel assembly, rear cover,
cassette chassis assembly, tuner, rear panel, video board, AC
board, micom board, speaker board and amplifier board.
(1) Remove the wire holder fixing the wire.

Reference:

When connecting the wires, fix it with the wire holder as
before.

(2) Remove the four screws S and take out the power trans-

former.

3.1.15 Removing the DVD mechanism assembly

(See Figs.22 and 23)

• Remove the metal cover, front panel assembly, rear cover,
cassette chassis assembly, tuner, rear panel, video board, AC
board, micom board, speaker board and amplifier board.
(1) Remove the wire holder fixing the wire. (See Fig.22.)

Reference:

When connecting the wires, fix it with the wire holder as
before. (See Fig.22.)

(2) Remove the three screws T attaching the shield case on

the bottom chassis. (See Fig.22.)

(3) Remove the wires from the sections (k, m) of the wire hold-

er on the DVD mechanism assembly. (See Fig.23.)

Reference:

After attaching the DVD mechanism assembly, pass the
wires through the sections (k, m) on the DVD mecha­nism assembly as before. (See Fig.23.)

(4) Remove the screw U attaching the DVD mechanism as-

sembly and take out the DVD mechanism assembly from
the bottom chassis. (See Fig.23.)

Reference:

When the resolution of DVD mechanism assembly is done se­quentially, remove the wire holder on the DVD mechanism as­sembly. (See Fig.23.)

T

S

Power transformer

DVD mechanism assembly

Shield case

T

Wire holde

Bottom chassis

S

Fig.22

mk

U

Bottom chassis

Wire holder

Fig.23

(No.MB408)1-17

3.1.16 Removing the AUX board and headphone board

A

(See Fig.24)

• Remove the metal cover, front panel assembly, rear cover,
cassette chassis assembly, tuner, rear panel, video board, AC
board, micom board, speaker board and amplifier board.
(1) Remove the screw V attaching the AUX board on the bot-

tom chassis.
(2) Take out the AUX board from the bottom chassis.
(3) Remove the screw V attaching the headphone board on

the bottom chassis.
(4) Take out the headphone board from the bottom chassis.

UX board

Headphone board

3.1.17 Removing the cassette mechanism assembly
(See Fig.25)

• Remove the metal cover, rear cover and cassette chassis as-

sembly.
(1) From the bottom side of the cassette chassis assembly,

disconnect the card wires from the connectors (CN33

CN34) on the cassette mechanism assembly.

(2) Remove the four screws W and screw W' attaching the

cassette mechanism assembly.

Reference:

When attaching the screw W', attach the support board
with it.

(3) Take out the cassette mechanism assembly from the cas-

sette chassis assembly.

Reference:

• Remove the head shield from the cassette mechanism as­sembly as required.

• When removing the head shield, remove the two screws X
after removing the soldered section n of the head shield.

3.1.18 Removing the microphone board
(See Fig.25)

• Remove the metal cover, rear cover and cassette chassis as-

sembly.
(1) From the bottom side of the cassette chassis assembly,

disconnect the card wire from the connector CN601
microphone board.

(2) Remove the two screws Y and take out the microphone

board with the support board.

(3) Remove the support board from the microphone board.

on the

V

Fig.24

CN601

,

CN33

CN34

Microphone board

V

Y

W

Support board

W'

Support board

W

W

XX

Cassette mechanism assembly

Fig.25

n

Head shield

1-18 (No.MB408)

3.1.19 Removing the front panel board

(See Figs.26 and 27)

• Remove the metal cover and front panel assembly.

(1) From the front side of the front panel assembly, pull out the

volume knob in the direction of the arrow. (See Fig.26.)

(2) From the inside of the front panel assembly, remove the

nine screws Z and screw Z' attaching the front panel board.
(See Fig.27.)

Reference:

When attaching the screw Z', attach the support board
with it. (See Fig.27.)

(3) Take out the front panel board while releasing the claws p

in the direction of the arrow. (See Fig.27.)

Front panel assembly

Volume knob

Fig.26

Z

Z

Front panel board

Front panel assembly

p

Support board

Z'

p

Z

Fig.27

(No.MB408)1-19

3.2 DVD mechanism section

• Remove the DVD mechanism assembly from the main body.

(See "Removing the DVD mechanism assembly".)

3.2.1 Removing the traverse mechanism assembly
(See Fig.1)

From the bottom side of the DVD mechanism assembly, remove
the four screws A attaching the traverse mechanism assembly
and take out the traverse mechanism assembly with the DVD
module board.

DVD mechanism assembly

Traverse mechanism assembly

AA

DVD module board

Fig.1

1-20 (No.MB408)

3.2.2 Removing the DVD module board

(See Figs.2 and 3)

• Remove the traverse mechanism assembly.

(1) From the side of the traverse mechanism assembly, solder

the short land sections a on the DVD pickup. (See Fig.2.)

(2) From the bottom side of the traverse mechanism assem-

bly, release the lock of the connector CN101
module board in the direction of the arrow and disconnect
the card wire. (See Fig.3.)

Caution:

• Solder the short land sections a on the DVD pickup be­fore disconnecting the card wire from the connector

on the DVD module board. If the card wire is

CN101

disconnected without attaching solder, the DVD pick­up may be destroyed by static electricity. (See Figs.2
and 3.)

• When attaching the DVD module board, be sure to re­move solders from the short land sections a after con­necting the card wire to the connector CN101
DVD module board. (See Figs.2 and 3.)

(3) Disconnect the card wire from the connector CN201

DVD module board. (See Fig.3.)

(4) Remove the two screws B attaching the DVD module

board. (See Fig.3.)

(5) Remove the DVD module board from the engagement sec-

tion b in an upward and remove the engagement section c
in the direction of the arrow. (See Fig.3.)

on the DVD

on the

on the

a

Traverse mechanism assembly

Card wire

B

DVD pickup

Fig.2

Card wire

CN101 CN201

b

c

DVD module board

B

Traverse mechanism assembly

Fig.3

(No.MB408)1-21

3.2.3 Removing the DVD pickup
(See Figs.2,4 to 6)

• Remove the traverse mechanism assembly.

(1) From the side of the traverse mechanism assembly, solder

the short land sections a on the DVD pickup. (See Fig.2.)

(2) Release the lock of the connector on the DVD pickup in the

direction of the arrow and disconnect the card wire. (See
Fig.4.)

Caution:

• Solder the short land sections a on the DVD pickup be­fore disconnecting the card wire from the connector on
the DVD pickup. If the card wire is disconnected with­out attaching solder, the DVD pickup may be de­stroyed by static electricity. (See Figs.2 and 4.)

• When attaching the DVD pickup, be sure to remove
solders from the short land sections a after connecting
the card wire to the connector on the DVD pickup.
(See Figs.2 and 4.)

(3) Remove the screw C and remove the feed bracket from the

sections d. (See Fig.4.)

(4) Release the claw e of the thrust spring in the direction of

the arrow and remove the thrust spring. (See Fig.4.)

(5) Remove the guide shaft of the DVD pickup from the section

f on the traverse mechanism assembly and remove the
guide shaft from the section g while moving it in the direc­tion of the arrow. (See Fig.5.)

(6) Remove the DVD pickup from the section h of the traverse

mechanism assembly and take out the DVD pickup with
the guide shaft. (See fig.5.)

(7) From the bottom side of the DVD pickup, remove the two

screws D attaching the rack arm and rack arm spring. (See
Fig.6.)

(8) Pull the guide shaft out of the DVD pickup. (See Fig.6.)

e

Guide shaft

f

Traverse mechanism assembly

Rod spring

DVD pickup

Fig.5

h

DVD pickup

Rack arm

g

Feed bracket

C

Thrust spring

d

Card wire

Thrust spring

Guide shaft

D

Rack arm spring

Fig.6

DVD pickup

Connector

Fig.4

1-22 (No.MB408)

3.2.4 Attaching the DVD pickup
(See Figs.2,4 to 7)

• See "3.2.3 Removing the DVD pickup".

(1) Attach the guide shaft, rack arm and rack arm spring to the

DVD pickup. (See Fig.6.)

(2) Align the DVD pickup to the section h of the traverse mech-

anism assembly first, and set the both ends of the guide
shaft of the DVD pickup in the sections f and g of the
traverse mechanism assembly. (See Fig.5.)

Reference:

When attaching the guide shaft to the section g, attach it

under the rod spring. (See Fig.5.)
(3) Attach the feed bracket and thrust spring. (See Fig.4.)
(4) Remove solders from the short land sections a after con-

necting the card wire to the connector on the DVD pickup.
(See Figs.2 and 4.)

(5) Turn the screw shaft gear in the direction of the arrow 1 to

move the DVD pickup fully in the direction of the arrow 2.
(See Fig.7.)

Screw shaft gear

1

22

DVD pickup

Fig.7

(No.MB408)1-23

3.2.5 Removing the feed motor
(See Figs.4,8 and 9)

• Remove the traverse mechanism assembly.

(1) From the top side of the traverse mechanism assembly, re-

move the screw C and remove the feed bracket from the
sections d. (See Fig.4.)

(2) Release the claw e of the thrust spring in the direction of

the arrow and remove the thrust spring. (See Fig.4.)

(3) Remove the wires from the soldered section j on the spin-

dle motor board. (See Fig.8.)

Reference:

• When attaching the feed motor, pass the wire through
the section k on the traverse mechanism assembly.
(See Fig.8.)

• Pass the wire through the lower section of the rod
spring. (See Fig.8.)

(4) Remove the screw shaft in the direction of the arrow. (See

Fig.8.)

(5) From the side of the traverse mechanism assembly, re-

move the screw E attaching the feed motor. (See Fig.8.)

(6) Take out the feed motor from the traverse mechanism as-

sembly.

3.2.6 Removing the spindle motor board
(See Figs.8 and 9)

• Remove the traverse mechanism assembly and DVD module

board.
(1) From the top side of the traverse mechanism assembly, re-

move the wires from the soldered section j on the spindle
motor board. (See Fig.8.)

(2) From the bottom side of the traverse mechanism assem-

bly, remove the three screws F attaching the spindle motor
board. (See Fig.9.)

Reference:

• When attaching the spindle motor board, pass the card wire
through the section m on the traverse mechanism assembly.
(See Fig.9.)

• After attaching the screws F, apply bond as before.

E

Rod spring

Screw shaft

Wires

k

j

Spindle motor board

Traverse mechanism assembly

Fig.8

Traverse mechanism assembly

m

1-24 (No.MB408)

F

Spindle motor
board

F

Fig.9

3.2.7 Removing the DVD loading switch board
(See Fig.10.)

(1) From the bottom side of the DVD mechanism assembly, re-

move the wires from the soldered sections n on the DVD
loading switch board.

(2) Remove the screw G attaching the DVD loading switch

board.

(3) Lift the DVD loading switch board while pressing the claw

p of the DVD mechanism assembly in the direction of the
arrow and remove it from the section q.

Reference:

Pass the wires through the section r after attaching the DVD
loading switch board to the DVD mechanism assembly.

DVD loading switch board

Wires

n

G

p

Tray assembly

H

3.2.8 Removing the loading motor
(See Figs.10 to 14)

(1) From the bottom side of the DVD mechanism assembly, re-

move the wires from the soldered section n on the DVD
loading switch board. (See Fig.10.)

(2) Remove the screw H attaching the tray assembly. (See

Fig.10.)

(3) From the right side of the DVD mechanism assembly, push

the slide cam and pull the tray assembly out of the DVD
mechanism assembly in the direction of the arrow. (See
Fig.11.)

(4) From the top side of the DVD mechanism assembly, re-

move the two screws J attaching the clamper base. (See
Fig.12.)

(5) Lift the clamper base in an upward direction to remove it

from the engagement sections s and remove the engage­ment sections t in the direction of the arrow. (See Fig.12.)

(6) Remove the two screws K attaching the tray assembly and

take out the tray assembly from the DVD mechanism as­sembly. (See Fig.13.)

(7) Remove the belt from the motor pulley. (See Fig.14.)

Note:

Take care not to attach grease on the belt.

(8) Remove the two screws M attaching the loading motor to

the DVD mechanism assembly and take out the loading
motor from the bottom side of the DVD mechanism assem­bly. (See Fig.14.)

Reference:

Pass the wires through the section r after attaching the loading
motor to the DVD mechanism assembly. (See Fig.10.)

q

r

Tray assembly

Slide cam

J

s

DVD mechanism assembly

Fig.10

DVD mechanism assembly

Fig.11

Clamper base

t

s

t

J

DVD mechanism assembly

Fig.12

(No.MB408)1-25