JVC RXDV-31-SL Service manual

SERVICE MANUAL

HOME THEATER DVD-AUDIO/VIDEO RECEIVER

2202320036

RX-DV31SL

Area suffix

J ----------------------------- U.S.A. C -------------------------- Canada

RX-DV31 HOME THEATER DVD-AUDIO/VIDEO RECEIVER

COMPAC T

SUPER VIDE O

DVD/SUPER VCD/VCD/CD

TABLE OF CONTENTS

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

2 SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21

5 TROUBLE SHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22

6 DESCRIPTION OF MAJOR ICS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23

No.22023

2003/6

SPECIFICATION

Amplifier Output Power At Stereo operation Front channels 100 W per channel, min. RMS, driven into

8 Ω, 40 Hz to 20 kHz with no more than

0.8% total harmonic distortion.

At Surround operation Front channels 100 W per channel, min. RMS, driven into

8 Ω at 1 kHz, with no more than 0.8% total harmonic distortion.

Center channel 100 W, min. RMS, driven into 8 Ω at 1 kHz,

with no more than 0.8% total harmonic distortion.

Surround channels 100 W per channel, min. RMS, driven into

8 Ω at 1 kHz, with no more than 0.8% total harmonic distortion.

Audio Audio Input Sensitivity/

Impedance (1 kHz) Audio Input (DIGITAL IN)* Coaxial DIGITAL 1 (DBS) 0.5 V(p-p)/75 Ω

Signal-to-Noise Ratio ('66 IHF/'78 IHF)

Frequency Response (8 Ω) TV, TAPE/CDR, DBS, VCR 20 Hz to 20 kHz (±1 dB) Tone Control Bass (100 Hz) ±10 dB ±2 dB

Video Video Input

Sensitivity/ Impedance (1 kHz)

Video Output Level/Impedance (1 kHz)

FM tuner (IHF)

AM tuner Tuning Range 530 kHz to 1 710 kHz General Power

Tuning Range 87.5 MHz to 108.0 MHz

Requirements Power

Consumption Dimensions

(W × H × D) Mass 8.4 kg (18.5 lbs)

Composite video

S-video DBS IN, VCR IN (Y:luminance) 1 V(p-p)/75Ω

Composite video

S-video VCR OUT, MONITOR

Component video

Color System NTSC Horizontal

Resolution Signal-to-

Noise Ratio (S/N)

Synchronize Negative

AC 120 V , 60 Hz

200 W/255 VA (in operation) 2 W (in standby mode)

435 mm × 100 mm × 403.5 mm (17 3/16 in. × 3 15/16 in. × 15 15/16 in.)

TV, TAPE/CDR, DBS, VCR 240 mV/47 kΩ

Optical DIGITAL 2 (TV) -21 dBm to -15 dBm (660 nm ±30 nm) * Corresponding to Linear PCM, Dolby Digital, and DTS Digital Surround

(with sampling frequency-32 kHz, 44.1 kHz, 48 kHz).

TV, TAPE/CDR, DBS, VCR 87 dB/67 dB

Treble (10 kHz) ±10 dB ±2 dB DBS IN, VCR IN 1 V(p-p)/75 Ω

(C:chrominance) 0.286 V(p-p)/75 Ω

VCR OUT, MONITOR OUT 1 V(p-p)/75 Ω

(Y:luminance) 1 V(p-p)/75 Ω

OUT DVD COMPONENT

VIDEO OUT

500 lines

63 dB

(C:chrominance) 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

1-2 (No.22023)

1.1 Safety Precautions

Good earth ground

AC VOLTMETER

SECTION 1

PRECAUTION

(1) This design of th is product contains special hardw are 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 exposed 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 0.5µ mA AC (r.m.s.).

(Having 1000 ohms/volts, or more sensitivity)

0.15 F AC TYPE

Place this probe on

1500 10W

1.2 Warning

(1) This equipment has been designed and manufactured to

meet international safety standards.

(2) It is the legal resp onsibility 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 compone nts 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 expose metal part.

(No.22023)1-3

1.5 Importance administering poin on the safety

Power board (Forward side)

F101

Main board (Forward side)

F132

F131

1-4 (No.22023)

Caution: For continued protection against risk of fire, replace only with same type 5A/125V for F101, 2A/125V for F131 and F132. This symbol specifies type of fast operating fuse.

Precaution: Pour eviter risques de feux, remplacez le fusible de surete de F101 comme le meme type que 5A/125V, et 2A/125V pour F131 et F132. Ce sont des fusibles suretes qui functionnes rapide.

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

(No.22023)1-5

SECTION 3

DISASSEMBLY

3.1 Main body section

3.1.1 Removing the top cover (See Fig.1)

(1) From the both sides of the main body, remove the four

screws A attaching the top cover.

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

screws B attaching the top cover.

(3) Remove the top cover in the dire ction o f the arrow 2 while

extending the lower sections of the top cover in the direction of the arrow 1.

3.1.2 Removing the front panel assembly (See Figs.2 to 4)

• Prior to performing the following procedures, remove the top

cover. (1) From the top side of the main body, disconnect the card wire

from the connector CN114 on the main board. (See Fig.2.)

(2) Remove the screw C attaching the earth wire and sub

trans. Board. (See Fig.2.)

(3) From the bottom side of the main bo dy, remove the five

screws D attaching the front panel assembly. (See Fig.3.)

(4) From the both side of the main body, release the two joints

a using a flat-bladed screwdriver and remove the front panel assembly in the direction of the arrow. (See Fig.4.)

Ax2

Earth wire

Front panel assembly

Top cover

Fig.1

CN114

Sub trans board

Front panel assembly

Main board

Fig.2

Front panel assembly

Fig.3

1-6 (No.22023)

Joint a

Fig.4

3.1.3 Removing the rear panel

(See Fig.5)

• Prior to performing the following procedures, remove th e top

cover. (1) From the back side of the main body, remove the strain re-

lief from the rear panel in the direction of the arrow.

(2) Remove the twenty three screws E attaching the each

board to the rear panel.

(3) Remove the four screws F attaching the rear panel.

3.1.4 Removing the DSP board

(See Figs.6 and 7)

• Prior to performing the following procedures, remove th e top

cover. (1) From the back side of the main body, remove the four

screws G attaching the DSP board to the rear panel. (See Fig.6.)

(2) From the top side of the main body, disconnect the DSP

board from the connector CN611 on the DSP connector board. (See Fig.7.)

(3) From the left side of the main body, lift the DSP board in the

direction of the arrow and disconnect the card wire from the connector CN602 on the DSP board. (See Fig.7.)

(4) Take out the DSP board.

Rear panel

Strain relief

EEF

Fig.5

Fig.6

3.1.5 Removing the video jack board

(See Figs.6 and 7)

• Prior to performing the following procedures, remove th e top

cover and DSP board. (1) From the back side of the main body, remove the four

screws H attaching the video jack board. (See Fig.6.)

(2) Disconnect the card wire from the connector CN402 on the

video jack board and take out the video jack board. (See Fig.7.)

DSP board

Video jack board

CN402

Card wire

Fig.7

CN611

CN602

Card wire

DSP connector board

(No.22023)1-7

3.1.6 Removing the tuner (See Figs.8 and 9)

• Prior to performing the following procedures, remove the top

cover, DSP board and video jack board. (1) From the back side of the main body, remove the two

screws J attaching the tuner. (See Fig.8.)

(2) From the top side of the main bod y, disconnect the card

wire from the connector CN1 on the tuner. (See Fig.9.)

(3) Take out the tuner.

Fig.8

Card wire

CN 1

Tuner

Fig.9

3.1.7 Removing the DAC board (See Fig.10)

• Prior to performing the following procedures, remove the top

cover. (1) From the top side of the main body, disconnect the DAC

board from the connectors CN911 and CN912 on the main board.

Main board

CN911

DAC board

CN912

Fig.10

1-8 (No.22023)

3.1.8 Removing the amp. board

(See Fig.11)

• Prior to performing the following procedures, remove th e top

cover and rear panel. (1) From the top side of the main bod y, disconnect the wire

from the connector CN201 on the amp. board.

(2) Remove the screw K attaching the earth wire to the heat

sink barcket. (3) Remove the four screws L attaching the amp. board. (4) Disconnect the connector CN202 on the amp. board. (5) Lift the amp. board and disconnect the wire from th e con-

nector CN231 on the main board. (6) Disconnect the parallel wi re from th e con nector CN241 on

the main board and take out the amp. board.

Heat sink bracket

Earth wire

CN201

CN202

3.1.9 Removing the heat sink (See Fig.12)

• Prior to performing the following procedures, remove th e top

cover, rear panel and amp. board. (1) Remove the screw M attaching the H.sensor board. (2) Remove the five screws N attaching the IC bracket, heat

sink bracket and heat sink.

3.1.10 Removing the power ICs (See Fig.13)

• Prior to performing the following procedures, remove th e top

cover, rear panel, amp. board and heat sink. (1) From the reverse side of the amp. board, remove the sol-

ders from the soldered points b attaching the power ICs to the amp. board.

Heat sink

Heat sink bracket

IC bracket

Amp. board

CN241

Fig.11

Fig.12

Amp. board

CN231

Main board

H. sensor board

Amp. board

Power ICs solbered points b

Fig.13

(No.22023)1-9

3.1.11 Removing the amp. sub(a) board and amp. sub(b) board (See Fig.14)

• Prior to performing the following procedures, remove the top

cover, rear panel and amp. board. (1) From the forward side of the amp. board, disconn ect the

amp. sub(a) board from the connector CN203 on the amp board.

(2) Disconnect the amp. sub(b) board from the connector

CN204 on the amp. board.

Amp. sub (b) board Amp. sub (a) board

CN203

3.1.12 Removing the DVD mechanism assembly (See Fig.15)

• Prior to performing the following procedures, remove the top

cover and front panel assembly. (1) From the top side of th e main body, remove the screw P

and two screws Q attaching the DVD mechanism assembly.

Reference:

• When attaching the screw P, attach the thrust spring together with it.

• When attaching the screw Q, attach the earth wires together with them.

(2) Disconnect the DVD mechanism assembly from the con-

nectors CN512 and CN513 on the main board.

(3) Take out the DVD mechanism assembly.

3.1.13 Removing the main board (See Fig.16)

• Prior to performing the following procedures, remove the top

cover, rear panel, DAC board, DSP board, video jack board, tuner, amp. board and DVD mechanism assembly. (1) From the top side of the main body, disconnect the fan mo-

tor wire from the connector CN122 on the main board.

(2) Disconnect the card wire from the connector CN125 on the

main board.

(3) Disconnect the wire from the connector CN121 on the main

board.

(4) Disconnect the parallel wire from the connecto r CN291 on

the main board.

(5) Remove the five screws R attaching the main board.

Reference:

Remove the barrier, DSP connector board and amp. connector board as required.

Amp. board

CN512

DVD mechanism assembly

DSP connecter board

Barrier

Thrust spring

CN204

Fig.14

Fig.15

CN513

Main board

Earth wires

Amp. connector board

CN122

Fan motor wire

Card wire

1-10 (No.22023)

CN125 CN121 CN291

Fig.16

Parallel wire

Wire

3.1.14 Removing the sub trans . Bo ar d

(See Fig.17)

• Prior to performing the following procedures, remove th e top

cover and front panel assembly. (1) From the top side of the main b ody, remove the tie band

bundling the wires.

(2) Disconnect the card wire from the connector CN115 on the

sub trans. board.

(3) Disconnect the wire from the connector CN111 on the sub

trans. board.

(4) Disconnect the wire from the connector CN201 on the amp.

board. (5) Remove the three screws S attaching the sub trans. board. (6) From the reverse side of the sub trans. board, remove the

solders from the soldered points c attaching the wires.

CN201

CN122

Fan motor wier

Tie band

Amp. board

Fan motor

Sub trans. board

Fan bracket

3.1.15 Removing the fan motor (See Figs.17 and 18)

• Prior to performing the following procedures, remove th e top

cover and front panel assembly. (1) From the top side of the main b ody, remove the tie band

bundling the wires. (See Fig.17.)

(2) Disconnect the fan motor wire from the connector CN122

on the main board. (See Fig.17.)

(3) From the front side of the main body, remove the four

screws T attaching the fan motor to the fan bracket. (See Fig.18.)

(4) Take out the fan motor in the directi on of the arrow. (See

Fig.18.)

Reference:

• When attaching the screws T, attach the wire holder and wire clamp together with them. (See Fig.18.)

• After attaching the fan motor, bundle the wires using the wire clamp. (See Fig.18.)

Main board

Fan motor

Fig.17

Fig.18

Chassis base

CN115

Wire clamp

Soldered points c

Wire holder

Fan bracket

Chassis base

(No.22023)1-11

3.1.16 Removing the power board (See Fig.19)

• Prior to performing the following procedures, remove the top

cover. (1) From the top side of the main body, disconnect the wire

from the connector CN101 on the power board.

Reference:

Remove the tie bands as required.

(2) Remove the solders from the soldered poin ts d attaching

the power cord. (3) Remove the two screws U attaching the power board. (4) From the reverse side of the power board, remove the sol-

ders from the soldered point e attaching the wires.

3.1.17 Removing the power trans. former (See Figs.19 and 20)

• Prior to performing the following procedures, remove the top

cover. (1) From the top side of the main body, remove the tie ban ds

and wire clamps bundling the wires. (See Fig.20.)

(2) Disconnect the wire from the connector CN121 on the main

board. (See Fig.20.)

(3) Disconnect the wires from the connector CN111 on the sub

trans. board. (See Fog.20.)

(4) Remove the two screws U attaching the power board and

then turn over the power board. (See Fig.19.)

(5) Remove the solders from the soldered points e attaching

the wires. (See Fig.19.)

(6) Remove the four screws V attaching the power trans.

former. (See Fig.19.)

(7) Take out the power trans. former.

Power board

CN101

Main board

CN111

Tie bans

Power cord

Power trans. former

Fig.19

Soldered points d

Soldered points e

Tie bands

Wire clamps

Sub trans board

3.1.18 Removing the headphone board (See Fig.20)

• Prior to performing the following procedures, remove the top

cover and front panel assembly. (1) From the top side of the main body, disconnect the parallel

wire from the connector CN291 on the main board.

(2) Remove the three screws S attaching the sub trans. board.

Reference:

It is not necessary to remove the wire from the sub trans. board.

(3) Remove the screw W attaching the headphone board while

lifting the sub trans. board slightly.

CN121 CN291

Tie bans

Fig.20

Headphone board

1-12 (No.22023)

3.2 Front panel assembly section

3.2.1 Removing the FL board

(See Figs.21 and 22)

• Prior to performing the following procedures, remove th e top

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

volume knob assembly in the direction of the arrow. (See Fig.21.)

(2) From the back side of the front panel assembly, remove the

eight screws X attaching the FL board. (See Fig.22.)

(3) Disconnect the wire from the connector CN703 on the FL

board while lifting the FL board slightly. (See Fig.22.)

(4) Remove the solders from the soldered points f and g at-

taching the parallel wires while lifting the FL board. (See Fig.22.)

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

Reference:

Remove the parallel wires as required.

Front panel

Front panel assembly

Volume knob assembly

Fig.21

Soldered point g

FL board Wire

Soldered point f

CN703

Fig.22

(No.22023)1-13

3.2.2 Removing the control board (See Fig.23)

• Prior to performing the following procedures, remove the top

cover, front panel assembly and FL board.

Reference:

It is not necessary to remove the parallel wires from the FL board. (1) Remove the three screws Y attaching the control board. (2) Remove the solders from the soldered poin ts h attaching

the parallel wire while lifting the control board.

Reference:

Remove the parallel wire as required.

3.2.3 Removing the indicator board (See Fig.23)

• Prior to performing the following procedures, remove the top

cover and front panel assembly. (1) From the back side of the front panel assembly, remove the

two screws Z attaching the lens holder.

(2) Remove the solders from the soldered points i on the FL

board attaching the parallel wire.

(3) Remove the solders from the soldered points j on the pow-

er switch board attaching the parallel wire.

Reference:

Remove the parallel wires as required.

Control board

Indicator board

Soldered point h

FL board

Soldered point i

Fig.23

Lens holder

3.2.4 Removing the power switch board (See Fig.24)

• Prior to performing the following procedures, remove the top

cover and front panel assembly. (1) From the back side of the front panel assembly, remove the

two screws AA attaching the power switch board.

(2) Remove the solders from the soldered points j on the pow-

er switch board attaching the parallel wire.

Reference:

Remove the parallel wire as required.

3.2.5 Removing the speaker SW. board (See Fig.24)

• Prior to performing the following procedures, remove the top

cover and front panel assembly. (1) From the back side of the front panel assembly, remove the

three screws AB attaching the speaker SW. board.

(2) Disconnect the wire from the connector CN703 on the FL

board.

FL board

Power switch

CN703

Speaker SW. board

Fig.24

board

Soldered point j

1-14 (No.22023)

3.3 DVD mechanism section

• Remove the top cover.

• Remove the front panel assembly.

• Remove the DVD mechanism assembly.

3.3.1 Removing the tray

(See Figs.1 and 2)

(1) From the left side of the DVD mechanism a ssembly, push

the slide cam in the direction of the arrow 1 and then pull out the tray in the direction of the arrow 2. (See Fig.1.)

(2) Push the tray stoppers a in the direction of the arrow 3, pull

out the tray in the direction of the arrow 4. (See Fig.2.)

3.3.2 Attaching the tray

(See Fig.2)

When attaching the tray, insert the tray to the rail of the DVD mechanism assembly and then push th e tray in the DVD mechanism assembly.

Tr ay

Slide cam

Fig.1

3.3.3 Removing the tray

(See Fig.3)

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

disconnect the card wires from the connectors CN201 and CN202 on the DVD servo board.

Caution:

Be sure to solder the short land sections b on the flexible wire before disconnecting the flexible wire from connector CN101 on the DVD servo board. If the flexible wire is disconnected without attaching solder, the DVD pickup unit may be destroyed by static electricity.

(2) Release the locks of the connector CN101 on the DVD ser-

vo board in the direction of the arrow 1, disconnect the flexible wire.

Caution:

In the assembly, be sure to remove solders from the short land sections b after connecting the flexible wire to the connector CN101 on the DVD servo board.

(3) While pushing the claws c of the DVD mechanism assem-

bly in the direction of the arrow 2, remove the DVD servo board in an upward direction.

Card wire

CN201

Claw c

Tray stoppers

DVD mechanism assembly

Fig.2

Flexible wire

Short land sections b

DVD mechanism assembly

2 22

Tr ay

Card wire

CN202

Claw c

DVD servo board

CN101

Fig.3

(No.22023)1-15

3.3.4 Removing the clamper base (See Fig.4)

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

move the four screws A attaching the clamper base.

(2) Remove the clamper base from the bosse s d of the loadi ng

base in an upward direction, remove the clamper base from the sections e while sliding it in the direction of the arrow.

Boss d

Clamper base

Section e

3.3.5 Removing the tray drive board (See Fig.5)

• Remove the clamper base.

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

disconnect the card wire from the connector on the tray drive board.

(2) Remove the solders from the soldered sections f on the

tray drive board.

(3) Remove the screw B attaching th e tray drive board to the

DVD mechanism assembly.

Boss d

Connector

A A

Fig.4

Card wire

Soldered sections f

Loading base

Section e

DVD mechanism assembly

1-16 (No.22023)

Motor

Tray drive board

Fig.5

3.3.6 Removing the motor

(See Fig.6)

• Remove the clamper base.

• Remove the tray drive board.

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

move the belt of the pulley gear.

Note:

Take care not to attach grease on the belt.

(2) Remove the screw C attaching the motor to the DVD mech-

anism assembly.

3.3.7 Removing the DVD traverse mechanism assembly

(See Figs.7)

• Remove the DVD servo board.

• Remove the clamper base.

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

move the four screws D attaching the DVD traverse mechanism assembly to the loading base.

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

loading base.

Pulley gear

DVD mechanism assembly

Belt

Motor

Fig.6

DVD traverse mechanism assembly

D D

Fig.7

Loading base

(No.22023)1-17

3.3.8 Removing the DVD pickup unit (See Figs.8 to 10)

• Remove the DVD servo board.

• Remove the clamper base.

• Remove the DVD traverse mechanism assembly.

(1) From the top side of the DVD traverse mechanism assem-

bly, remove the screw E attaching the plate and torsion spring. (See Fig.8.)

(2) Remove the shaft from the section g and then remove the

shaft from the section h. (See Fig.9.)

(3) Disengage the section i of the DVD pickup unit and then re-

move the DVD pickup unit with the shaft. (See Fig.9.) (4) Pull the shaft out of the DVD pickup unit. (See Fig.10.) (5) Remove the two screws F attaching the SW. actuator. (See

Fig.10.)

3.3.9 Attaching the DVD pickup unit (See Figs.8, 10 to 12)

Reference:

Refer to the explanation of "Removing the DVD pickup unit" on the preceding page. (1) Attach the SW. actuator and shaft to the DVD p ickup unit.

(See Fig.10.)

(2) Engage the section i of the DVD pickup unit to the shaft of

the DVD traverse mechanism assembly first, and set the both ends of the shaft of the DVD pickup unit in the sections g and h of the DVD traverse mechanism assembly. (See Fig.11.)

(3) Slide the DVD pickup unit all the way in the direction of the

arrow. (See Fig.12.)

(4) Mesh the lead screw to the section j of DVD pickup unit and

then set the end of the lead screw to the section k. (See

Fig.12.) (5) Attach the torsion spring. (See Fig.8.) (6) Attach the plate. (See Fig.8.)

DVD pickup unit

Section i

SW. actuator

Shaft

Section h

Shaft

Section g

Fig.9

DVD pickup unit

Fig.10

DVD pickup unit

Plate

Torsion spring

DVD traverse mechanism assembly

Fig.8

DVD pickup unit

Shaft

Section g

DVD pickup unit

Section h

DVD traverse mechanism assembly

Fig.11

Section k

Section j

Lead screw

1-18 (No.22023)

Fig.12

3.3.10 Removing the spindl e m oto r board

(See Figs.13 and 14)

• Remove the DVD servo board.

• Remove the clamper base.

• Remove the DVD traverse mechanism assembly. (1) From the top side of the DVD traverse mechanism assem-

bly, remove the feed motor wire that is soldered to the spindle motor board. (See Fig.13.)

(2) From the bottom side of the DVD traverse mechanism as-

sembly, remove the three screws G attaching the spindle motor board. (See Fig.14.)

Spindle motor board

Remove the solders.

Feed moto wire

DVD traverse mechanism assembly

Fig.13

DVD traverse mechanism assembly

Fig.14

(No.22023)1-19

3.3.11 Removing the feed motor

(See Figs.15 to 17)

• Remove the DVD servo board.

• Remove the clamper base.

• Remove the DVD traverse mechanism assembly. (1) From the top side of the DVD traverse mechanism assem-

bly, remove the feed motor wire that is soldered to the spindle motor board. (See Fig.15.)

(2) Remove the two screws H attaching the feed holder as-

sembly and then take out the feed holder assembly. (See Fig.15.)

(3) Remove the screw J attaching the thrust spring. (See

Fig.16.)

(4) Remove the feed gear and lead screw in the direction of the

arrow. (See Fig.16.)

(5) Remove the two screws K attaching the feed motor. (See

Fig.17.)

Spindle motor board

DVD traverse mechanism assembly

Fig.15

Feed holder assembly

Remove the solders.

Feed holde assembly

Feed motor wire

Feed motor

Lead screw

Feed motor

Feed gear

Thrust spring

Fig.16

Feed holder assembly

1-20 (No.22023)

Fig.17

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