JVC UX-QD9S service manual

MB338200412

SERVICE MANUAL

MICRO COMPONENT SYSTEM

UX-QD9S

Area suffix

A ------------------------ Australia US ------------------------ Singapore UN ----------------------------- Asean

(CA-UXQD9S) (SP-UXQD9S)(SP-UXQD9S)

TABLE OF CONTENTS

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

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

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

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32

No.MB338

2004/12

SPECIFICATION

DVD receiver (CA-UXQD9S)

Amplifier Output power 20 W + 20 W at 4 Ω (10% THD)

Input terminals Analog AUX×1,

500 mV/47 kΩ:LEVEL1 250 mV/47 kΩ:LEVEL2

Output terminals Analog Speaker×1, 20 W/4 Ω, Impedance 4 Ω - 16 Ω

Headphone (×1), 25 mW/32 Ω, Impedance 16 Ω - 1 kΩ

Digital DVD/CD optical input × 1

-23 dBm to -15 dBm (Optical square terminal)

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.MB338)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

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.

Short land sections

Pickup

1-4 (No.MB338)

Card wire

Connecto

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)

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.MB338)1-5

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

1-6 (No.MB338)

SECTION 3

DISASSEMBLY

3.1 Main body section

3.1.1 Removing the rear cover (See Figs.1 and 2)

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

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

(2) From the bottom side of the main body, remove the three

screws B attaching the rear cover. (See Fig.2.)

(3) Remove the rear cover from the main body.

Rear cover

A AA

Fig.1

Rear cover

Fig.2

(No.MB338)1-7

3.1.2 Removing the side panels (L)/(R) (See Fig.3)

• Remove the rear cover.

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

screws C attaching the side panels (L)/(R).

(2) Slide the side panels (L)/(R) in the direction of the arrow

and remove the side panels (L)/(R).

Side panel(R)

3.1.3 Removing the top cover assembly (See Figs.4 and 5)

• Remove the rear cover and side panels(L)/(R).

(1) From the left side of the main body, disconnect the card

wires from the connectors (CN703 board. (See Fig.4.)

(2) Remove the screw D attaching the top cover assembly.

(See Fig.4.)

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

wire from the connector CN105 Fig.5.)

(4) Disconnect the wire from the connector CN108 on the main

board. (See Fig.5.)

Reference:

When connecting the wire, pass it through the slot b of the main board as before. (See Fig.5.)

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

screws E and screw F attaching the top cover assembly. (See Figs.4 and 5.)

(6) Release the joints a and remove the top cover assembly.

(See Figs.4 and 5.)

, CN709) on the micon

on the main board. (See

Side panel(R)

Fig.3

Top cover assembly a

Fig.4

Top cover assembly

a CN108 CN105

Micon boardCN703 CN709

1-8 (No.MB338)

Main board

Fig.5

3.1.4 Removing the front panel assembly

(See Figs.6 to 8)

• Remove the rear cover, side panels(L)/(R) and top cover as-

sembly. (1) From the left side of the main body, disconnect the card

wires from the connectors (CN702 board. (See Fig.6.)

(2) From the right side of the main body, disconnect the earth

wire from the micon board. (See Fig.7.)

(3) From the both sides and bottom sides of the main body, re-

lease the joints c and joint d. (See Figs.6 to 8.)

(4) Remove the front panel assembly in the direction of the ar-

row. (See Figs.6 to 8.)

, CN710) on the micon

Front panel assembly

CN710

CN702

Micon board

Front panel assembly

Fig.6

Earth wire

Micon board

Fig.7

Front panel assembly

Fig.8

(No.MB338)1-9

3.1.5 Removing the fan motor (See Figs.9 and 10)

• Remove the rear cover, side panels(L)/(R) and top cover as-

sembly. (1) From the back side of the top cover assembly, remove the

screw G attaching the fan motor. (See Fig.9.)

Reference:

When attaching the screw G, attach the spacer with it. (See Fig.9.)

(2) Take out the fan motor.

Reference:

When attaching the fan motor, pass the wire through the slot

e. (See Fig.10.)

3.1.6 Removing the tuner (See Figs.9 and 10)

• Remove the rear cover, side panels(L)/(R) and top cover as-

sembly. (1) From the back side of the top cover assembly, remove the

two screws H attaching the tuner bracket. (See Fig.9.)

(2) From the inside of the top cover assembly, remove the

screw J attaching the tuner bracket. (See Fig.10.) (3) Take out the tuner with the tuner bracket. (4) Remove the tuner from the tuner bracket.

Fan motor

Tuner bracket

3.1.7 Removing the cassette mechanism assembly (See Fig.10)

• Remove the rear cover, side panels(L)/(R) and top cover as-

sembly. (1) From the inside of the top cover assembly, remove the

screw K, screw L, screws L’ and screw L” attaching the cassette mechanism assembly.

(2) Loosen the screw M attaching the cassette mechanism as-

sembly.

(3) Remove the cassette mechanism assembly.

Reference:

• When attaching the screw L’, attach the lug wire and shield with it.

• When attaching the screw L”, attach the shield with it.

Spacer

Fig.9

Cassette mechanism assembly

Lug wire

L"L'

Shield

1-10 (No.MB338)

Tuner

Tuner bracket

Fan motor

Fig.10

3.1.8 Removing the heat sink (See Fig.11)

• Remove the rear cover, side panels(L)/(R) and top cover as-

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

screws N attaching the heat sink.

(2) Remove the heat sink from the main board and regulator

board.

3.1.9 Removing the main board (See Fig.12)

• Remove the rear cover, side panels(L)/(R), top cover assem-

bly and heat sink. (1) From the right side of the main body, remove the two

screws P attaching the main board. (See Fig.12.)

(2) Disconnect the connectors (CN101

CN110) on the main board toward this side. (See Fig.12.)

(3) From the forward side of the main board, disconnect the

wires from the connectors (CN109 Fig.12.)

Reference:

Remove it when a lug wire from the main board is installed with a screw Q. (When the screw Q and lug wire are installed, apply it.) (See Fig.13.)

to CN104, CN106 and

and CN111). (See

Main board

Regulator board

Heat sink

Fig.11

CN104

CN103

Lug wire

CN102

Fig.12

Main board

Fig.13

CN 111

CN101CN106

CN109

CN110

(No.MB338)1-11

3.1.10 Removing the regulator board (See Fig.14)

• Remove the rear cover, side panels(L)/(R), top cover assem-

bly, heat sink and main board. (1) From the top side of the main body, disconnect the wire

from the connector CN902

(2) Disconnect the wire from the connector CN202

ulator board. (3) Remove the three screws R attaching the regulator board. (4) Take out the regulator board from the main body.

Reference:

After attaching the regulator board, attach the barrier (C) as before.

on the transformer board.

on the reg-

Regulator board

CN202

Transformer board

CN902

Transformer board

3.1.11 Removing the transformer board (See Fig.15)

• Remove the rear cover, side panels(L)/(R), top cover assem-

bly, heat sink, main board and regulator board. (1) From the back side of the main body, remove the two

screws S attaching the heat sink bracket.

(2) From the left side of the main body, remove the tie band.

Reference:

After attaching the transformer board, fix the power cord with the new tie band as before.

(3) Disconnect the wire from the connector CN903

transformer board.

(4) Disconnect the power cord from the connector CN901 on

the transformer board.

(5) Remove the three screws T attaching the power transform-

er and take out the transformer board from the main body.

Reference:

Remove the transformer shield as required.

on the

Transformer shield

Transformer board

CN903

Barrier (C)

Fig.14

CN901

Power cord

Tie band

Heat sink bracket

1-12 (No.MB338)

Fig.15

3.1.12 Removing the power transformer

(See Fig.16)

• Remove the rear cover, side panels(L)/(R), top cover assem-

bly, heat sink, main board, regulator board and transformer board. (1) From the reverse side of the transformer board, remove the

solders from the sections f on the transformer board.

(2) Remove the power transformer from the transformer

board.

3.1.13 Removing the jack board and component board

(See Fig.17)

• Remove the rear cover, side panels(L)/(R), top cover assem-

bly, heat sink, main board and regulator board. (1) From the back side of the main body, remove the two

screws U attaching the heat sink bracket.

(2) From the top side of the main body, remove the screw V at-

taching the PWB holder and take out the PWB holder.

Reference:

When attaching the PWB holder, put the section g under the hook of the bottom chassis.

(3) Remove the screw W attaching the jack board and take out

the jack board with the component board.

Reference:

• Remove the connector CN631 from the jack board as required.

• When attaching the jack board, attach it after putting a projection h of the bottom chassis in a hole of the jack board.

on the component board

CN631

Component board

PWB holder

Bottom chassis

Fig.16

Jack board

Transformer board

Heat sink bracket

Fig.17

(No.MB338)1-13

3.1.14 Removing the joint board (See Fig.18)

• Remove the rear cover, side panels(L)/(R), top cover assem-

bly, heat sink, main board, regulator board and transformer board.

Reference:

Remove the jack board as required. (1) From the back side of the main body, remove the two

screws X attaching the joint board.

(2) Remove the connector CN805

micon board toward this side.

(3) From the forward side of the joint board, disconnect the

card wires from the connectors (CN801 joint board.

(4) Take out the joint board from the main body.

3.1.15 Removing the micon board (See Fig.19)

• Remove the rear cover, side panels(L)/(R), top cover assem-

bly, front panel assembly, heat sink, main board and regulator board. (1) Remove the two screws Y attaching the MD holder to the

micon board. (See Fig.19.) (2) Take out the MD holder. (3) Disconnect the wire from the connector CN903

transformer board. (See Fig.20.) (4) Disconnect the card wires from the connectors (CN705 and

) on the micon board. (See Fig.20.)

CN711

(5) Remove the screw Z attaching the micon board. (See

Fig.20.) (6) Disconnect the micon board from the connector CN805

the joint board. (See Fig.20.) (7) Take out the micon board from the main body.

on the joint board from the

and CN802) on the

on the

CN801

Micon board

CN805

CN802

Fig.18

Micon board

Joint board

MD holder

CN711

Fig.19

CN705

Micon board

Fig.20

CN903

Transformer board

CN805

Joint board

1-14 (No.MB338)

3.1.16 Removing the DVD mechanism assembly (See Figs.21 and 22)

• Remove the rear cover, side panels(L)/(R), top cover assem-

bly, heat sink, main board, regulator board, transformer board and joint board. (1) From the top side of the main body, disconnect the card

wires from the connectors (CN705 con board. (See Fig.21.)

(2) From the left side of the main body, remove the spacers fix-

ing the card wires. (See Fig.21.)

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

AA attaching the DVD mechanism bracket. (See Fig.21.)

(4) Move the DVD mechanism bracket in the direction of the

arrow to release the claws i and remove the DVD mechanism bracket. (See Fig.21.)

(5) Remove the screw AB attaching the DVD mechanism as-

sembly. (See Fig.22.)

(6) Take out the DVD mechanism assembly from the main

body. (See Fig.22.)

and CN711) on the mi-

CN711

Spacer

CN711

Card wire

CN705

Spacer

CN705

Card wire

Micon board

DVD mechanism bracket

Fig.21

DVD mechanism assembly

Fig.22

(No.MB338)1-15

3.1.17 Removing the headphone board (See Fig.23)

• Remove the rear cover, side panels(L)/(R), top cover assem-

bly, heat sink, main board, regulator board, transformer board, joint board and DVD mechanism assembly. (1) From the right side of the main body, remove the screw AC

attaching the headphone board.

(2) Take out the headphone board from the main body.

Reference:

• When attaching the headphone board, put the headphone board in the slot j.

• When attaching the headphone board, pass the wire through the section k.

• After attaching the headphone board, fix the wires with the spacers as before.

3.1.18 Removing the FL board (See Fig.24)

• Remove the rear cover, side panels(L)/(R), top cover assem-

bly and front panel assembly. (1) From the inside of the front panel assembly, remove the

three screws AD attaching the FL board.

(2) Take out the FL board from the front panel assembly.

Note:

When attaching the FL board, be careful not to damage the LCD panel.

Headphone board

Spacer

Fig.23

Front panel assembly

FL board

Spacer

3.1.19 Removing the key board (See Figs.24 and 25)

• Remove the rear cover, side panels(L)/(R), top cover assem-

bly 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.25.)

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

screws AE attaching the key board. (See Fig.24.)

(3) Take out the key board from the front panel assembly.

Key board

Fig.24

1-16 (No.MB338)

Volume knob

Front panel assembly

Fig.25

3.2 DVD mechanism assembly section

• Remove the DVD mechanism assembly from the main body.

(See "3.1.16 Removing the DVD mechanism assembly".)

3.2.1 Removing the DVD cover

(See Fig.1)

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

move the two screws A attaching the DVD cover. (2) Remove the double-stick tape fixing the card wire. (3) Lift the DVD cover in an upward direction and remove it

from the projections a of the DVD mechanism assembly. (4) Slide the DVD cover in the direction of the arrow and re-

move it from the sections b. (5) Release the lock of the connector CN4

and disconnect the card wire.

on the LED board

Double-stick tape

Card wire

CN4

Card wire

LED board

3.2.2 Removing the joint board (See Fig.2)

• Remove the DVD cover.

(1) From the inside of the DVD cover, remove the screw B at-

taching the joint board.

(2) Remove the spacer attaching the joint board and take out

the joint board from the DVD cover.

DVD mechanism assembly

Clamper base

Fig.1

Joint board

Fig.2

Spacer

(No.MB338)1-17

3.2.3 Removing the tray assembly (See Figs.3 and 4)

• Remove the DVD cover.

(1) 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.3.)

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

move the two screws C attaching the tray assembly. (See Fig.4.)

(3) Remove the bushing of the tray assembly from the projec-

tions c on the DVD mechanism assembly and take out the tray assembly in an upward direction. (See Fig.4.)

Tray assembly DVD mechanism assembly

Slide cam

Fig.3

Shaft guide

3.2.4 Removing the LED board (See Fig.5)

• Remove the DVD cover and tray assembly.

(1) From the top side of the tray assembly, remove the sec-

tions d which were fixed in bond.

(2) Remove the double-stick tape attaching the LED board and

take out the LED board.

Note:

When removing the LED board, be sure not to damage the LED board.

DVD mechanism assembly

Fig.4

Tray assembly

Double-stick tape

Fig.5

Tray assembly

LED board

1-18 (No.MB338)

3.2.5 Removing the traverse mechanism assembly

(See Figs.6)

• Remove the DVD cover.

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

move the four screws D attaching the traverse mechanism assembly.

(2) Take out the traverse mechanism assembly with the DVD

module board.

DVD mechanism assembly

DVD module board

3.2.6 Removing the DVD module board

(See Figs.7 and 8)

• Remove the DVD cover and traverse mechanism assembly.

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

the short land sections e of the pickup. (See Fig.7.)

(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.8.)

Caution:

• Solder the short land section e on the pickup before disconnecting the card wire from the connector CN101 on the DVD module board. If the card wire is disconnected without attaching solder, the pickup may be destroyed by static electricity. (See Figs.7 and 8.)

• When attaching the DVD module board, be sure to remove solders from the short land section e after connecting the card wire to the connector CN101 DVD module board. (See Figs.7 and 8.)

(3) Disconnect the card wire from the connector CN201

DVD module board. (See Fig.8.)

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

board. (See Fig.8.)

(5) Remove the DVD module board from the projection f in an

upward direction and remove the claw h in the direction of the arrow 2 while removing the claw g in the direction of the arrow 1. (See Fig.8.)

on the DVD

on the

Traverse mechanism assembly

Fig.6

Traverse mechanism assembly

Fig.7

Card wire

CN101

Pickup

Card wire

CN201

DVD module board

Traverse mechanism assembly

Fig.8

(No.MB338)1-19

3.2.7 Removing the pickup (See Figs.7, 9 to 11)

• Remove the DVD cover and traverse mechanism assembly.

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

the short land sections e of the pickup. (See Fig.7.)

(2) Release the lock of the connector of the pickup in the direc-

tion of the arrow and disconnect the card wire. (See Fig.9.)

Caution:

• Solder the short land section e on the pickup before disconnecting the card wire from the connector on the pickup. If the card wire is disconnected without attaching solder, the pickup may be destroyed by static electricity. (See Figs.7 and 9.)

• When attaching the pickup, be sure to remove solders from the short land section e after connecting the card wire to the connector on the pickup. (See Figs.7 and

9.)

(3) Remove the screw F attaching the plate and thrust spring.

(See Fig.9.)

(4) Remove the plate from the joint i of the feed holder and

take out the plate with the thrust spring. (See Fig.9.)

(5) Remove the shaft of the pickup from the section j of the

traverse mechanism assembly and remove it from the section k while moving the shaft in the direction of the arrow. (See Fig.10.)

(6) Remove the pickup from the section m of the traverse

mechanism assembly and take out the pickup with the shaft. (See Fig.10.)

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

G attaching the SW actuator and LEAD spring. (See Fig.11.)

(8) Pull the shaft out of the pickup. (See Fig.11.)

Plate

Feed holder

Shaft

Thrust spring

Card wire

Fig.9

Traverse mechanism assembly

Connector

Pickup

Shaft

Fig.10

Pickup

SW actuator

LEAD spring

Fig.11

1-20 (No.MB338)

3.2.8 Attaching the pickup (See Figs.7, 9 to 12)

• See "3.2.7 Removing the pickup".

(1) Attach the shaft, SW actuator and LEAD spring to the pick-

up. (See Fig.11.)

(2) Align the pickup to the section m of the traverse mecha-

nism assembly first, and set the both ends of the shaft of the pickup in the sections (j, k) of the traverse mechanism

assembly. (See Fig.10.) (3) Attach the plate and thrust spring. (See Fig.9.) (4) Remove the solders from the soldered sections e after at-

taching the card wire to the connector on the pickup. (See

Figs.7 and 9.) (5) Turn the feed gear M in the direction of the arrow 1 to move

the pickup fully in the direction of the arrow 2. (See Fig.12.)

Feed gear M

Pickup

Fig.12

(No.MB338)1-21

3.2.9 Removing the feed motor (See Figs.13 to 15)

• Remove the DVD cover and traverse mechanism assembly.

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

move the screw H attaching the plate and thrust spring. (See Fig.13.)

(2) Remove the plate from the joint n of the feed holder and

take out the plate with the thrust spring. (See Fig.13.)

(3) Remove the wires from the soldered sections p on the spin-

dle motor board. (See Fig.14.)

Reference:

When attaching the feed motor, pass the wires through the section q on the spindle base. (See Fig.14.)

(4) Remove the three screws J attaching the feed holder. (See

Fig.14.)

(5) Remove the feed holder, feed motor, lead screw, feed gear

E and feed gear M simultaneously. (See Fig.14.)

(6) From the side of the feed holder, remove the two screws K

attaching the feed motor. (See Fig.15.)

3.2.10 Removing the spindle motor board (See Fig.14 and 16)

• Remove the DVD cover, traverse mechanism assembly and

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

move the wires from the soldered sections p on the spindle motor board. (See Fig.14.)

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

bly, remove the three screws L attaching the spindle motor board. (See Fig.16.)

Plate

Feed gear M

Feed gear E

Thrust spring

Fig.13

Feed motor

Traverse mechanism assembly

Lead screw

Wires

Feed holder

Traverse mechanism assembly

Spindle base

Fig.14

Fig.15

Traverse mechanism assembly

Spindle motor board

Feed holder

1-22 (No.MB338)

Fig.16

+ 51 hidden pages

JVC UX-QD9S service manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1.1 Safety Precautions

1.2 Warning

1.3 Caution

1.4 Critical parts for safety

1.5 Preventing static electricity

1.6 Handling the traverse unit (optical pickup)

1.7 Attention when traverse unit is decomposed

1.8 Important for laser products

3.1 Main body section

3.2 DVD mechanism assembly section