JVC HX-GD7 Service Manual

SERVICE MANUAL

COMPACT COMPONENT SYSTEM

MB26120046

HX-GD7

Area suffix

US ------------------------ Singapore
UX -------------------- Saudi Arabia
UJ ---------------------- U.S.Military
UN ----------------------------- Asean

SURROUND MODE

COMPACT

DIGITAL AUDIO

HX-GD7

SOUND MODE

SUBWOOFER

DISC

COMPACT COMPONENT SYSTEM

CA-HXGD7 SP-HXGD7SP-HXGD7

DIGITAL

TABLE OF CONTENTS

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

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

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

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-36

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-52

COPYRIGHT © 2004 Victor Company of Japan, Limited

No.MB261

2004/6

SPECIFICATION

CA-HXGD7

Amplifier section Output Power SUBWOOFERS 100 W per channel, min. RMS, driven into 6 Ω at 63 Hz

with no more than 10% total harmonic distortion.

MAIN SPEAKERS 40 W per channel, min. RMS, driven into 6 Ω at 1 kHz

with no more than 10% total harmonic distortion.

Audio input sensitivity / impedance
(Measured at 1 kHz, with tape record­ing signal 300 mV)

Digital output OPTICAL DIGITAL OUTPUT -21 dBm to -15 dBm (660 nm ±30 nm)

VIDEO OUT Color system NTSC/PAL selectable

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

COMPONENT (interlace/ progressive) (Y):1 V(p-p)/75Ω

Speaker Terminals MAIN SPEAKERS:6 Ω - 16 Ω

Others AV COMPU LINKx2 (Ø3.5)

Tuner section FM tuning range 87.50 MHz - 108.00 MHz

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

Disc player section Playable disc DVD Video/DVD Audio/CD/VCD/SVCD

Dynamic range 90 dB

Horizontal resolution 500 lines

Wow and flutter Immeasurable

Cassette deck section Frequency response Normal (type I) 50 Hz - 14 000 Hz

Wow and flutter 0.15% (WRMS)

General Power requirement AC 110 V / AC 127 V / AC 220 V / AC 230 V - AC 240 V

Power consumption 185 W (at operation) 25 W (on standby)

Dimensions (approx.) 205 mm × 370 mm × 432 mm (W/H/D)

Mass (approx.) 10.5 kg

SP-HXGD7

Type 3-Way 4-Speaker Bass-Reflex Type (Magnetically Shielded Type)

Speaker Systems Subwoofer 16 cm cone × 1

Woofer 12 cm cone × 2
Tweeter 5 cm cone × 1

Power handling capacity Subwoofer 100 W

Main speaker 40 W

Impedance Subwoofer 6 Ω

Main speaker 6 Ω

Frequency range Subwoofer 30 Hz - 1 000 Hz

Main speaker 67 Hz - 26 000 Hz

Sound pressure level Subwoofer 81 dB/W·m

Main speaker 86 dB/W·m

Dimensions (approx.) 227 mm × 432 mm × 376 mm (W/H/D)

Mass (approx.) 8 kg each

Design and specifications are subject to change without notice.

AUX IN:300 mV/47 kΩ
MIC 1/2:3.0 mV/50 kΩ

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

(PB/PR):0.7 V(p-p)/75Ω

SUBWOOFERS:6 Ω - 16 Ω

530 kHz - 1 710 kHz (at 10 kHz)

CD-R/CD-RW(recorded in Audio CD/ Video CD / Su­per Video CD/ MP3/ WMA/ JPEG format)
DVD-R/DVD-RW (recorded in video format)

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

1-2 (No.MB261)

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, 1,000
in the following manner. Connect a 1,500
paralleled by a 0.15
exposed metal part and a known good earth ground.
Measure the AC voltage across the resistor with the AC

Ω per volt or more sensitivity

Ω 10W resistor

µF AC-type capacitor between an

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.MB261)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.

Short land sections

1-4 (No.MB261)

DVD pickup

DVD changer 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.MB261)1-5

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

1-6 (No.MB261)

SECTION 3

r

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) Remove the metal cover from the main body while lifting

the rear section of the metal cover in the direction of the ar­row. (See Figs.2 and 3.)

Metal cover

A

A

Metal cover

A

Fig.1

B

Fig.2

Metal cove

B

Fig.3

(No.MB261)1-7

3.1.2 Removing the front panel assembly
(See Figs.4 to 7)

• Prior to performing the following procedures, remove the metal

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

wires from the connectors (CN43
on the main board. (See Fig.4.)

(2) Disconnect the earth wire from the chassis base. (See

Fig.4.)

(3) From the top side of the main body, disconnect the parallel

wires from the connectors (CN201
board. (See Fig.5.)

Reference:

When reassembling, pass the parallel wire through the
hole a on the plastic chassis before connecting the par­allel wire to the connector CN201
(See Fig.5.)

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

bundling the wires. (See Fig.6.)

Reference:

After reassembling, bundle the wires with the new tie
band as before. (See Fig.6.)

(5) Disconnect the earth wire from the chassis base. (See

Fig.6.)

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

screws C attaching the front panel assembly. (See Figs.4
and 6.)

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

screws D attaching the front panel assembly. (See Fig.7.)

(8) Release the joints b of the front panel assembly from the

chassis base and remove the front panel assembly in the
direction of the arrow. (See Figs.4, 6 and 7.)

Front panel assembly

Card wires

, CN44, CN802, CN803)

, CN205) on the bridge

on the bridge board.

Main board

CN802

Bridge board

CN201

Parallel wire

Parallel wire

CN205

Parallel wire

a

Plastic chassis

Fig.5

Front panel assembly

C

C

Earth wire

1-8 (No.MB261)

b

Card wires

Fig.4

CN43

CN44

CN803

Chassis base

Tie band

Chassis base

Front panel assembly

D

Fig.6

Fig.7

Earth wire

b

Chassis base

b

b

3.1.3 Removing the tuner

(See Figs.8, 9)

• Prior to performing the following procedures, remove the metal

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

wire from the connector CN560
Fig.8.)

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

screws E attaching the tuner to the rear panel. (See Fig.9.)

3.1.4 Removing the video board

(See Figs.8, 9)

• Prior to performing the following procedures, remove the metal

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

wire from the connector CN502
Fig.8.)

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

screws F attaching the video board to the rear panel. (See
Fig.9.)

on the main board. (See

on the main board. (See

Video board

CN502

Tuner

Fig.8

F

Card wires

CN560

Main board

Rear panel

E E

Fig.9

(No.MB261)1-9

3.1.5 Removing the rear panel

r

(See Figs.10 to 12)

• Prior to performing the following procedures, remove the metal

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

bundling the wires. (See Fig.10.)

Reference:

After reassembling, bundle the wires with the new tie
band as before. (See Fig.10.)

(2) Disconnect the wire from the connector CN202

bridge board. (See Fig.10.)

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

screws G and screw H attaching the rear cover. (See
Fig.11.)

(4) Release the sections c and remove the rear cover. (See

Fig.11.)

(5) Remove the seventeen screws J and the two screws K at-

taching the rear panel. (See Fig.12.)

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

attaching the rear panel to the chassis base and remove
the rear panel with the fan. (See Fig.12.)

3.1.6 Removing the fan
(See Figs.10 to 12)

• Prior to performing the following procedures, remove the metal

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

bundling the wires. (See Fig.10.)

Reference:

After reassembling, bundle the wires with the new tie
band as before. (See Fig.10.)

(2) Disconnect the wire from the connector CN202

bridge board. (See Fig.10.)

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

screws G and screw H attaching the rear cover. (See

Fig.11.)
(4) Remove the two screws L attaching the fan. (See Fig.12.)
(5) Take out the fan from the main body.

on the

on the

CN202

Tie band

Bridge board

Wires

Fig.10

G

H

c

c

1-10 (No.MB261)

c

Fig.11

Rear panel

J

Rear cove

J

Fan

LL

J
K

J

J

dd

Fig.12

3.1.7 Removing the main board
(See Figs.13 and 14)

• Prior to performing the following procedures, remove the metal

cover, tuner, video board and rear panel.
(1) From the right side of the main body, disconnect the card

wires from the connectors (CN43

, CN803) on the main board. (See Fig.13.)

CN802

(2) Remove the two screws M attaching the main board. (See

Fig.14.)

(3) Disconnect the connector CN217

ward this side and disconnect the connector CN501 on the
main board in the direction of the arrow. (See Fig.14.)

Reference:

• When attaching the main board, insert the sections e of the
bridge board in the hole of the main board. (See Fig.14.)

• Insert the section f of the main board in the hole of the chas­sis base before attaching the screws M. (See Fig.14.)

, CN44, CN110, CN111,

on the main board to-

Card wires

CN802

Main board

CN110

CN803

CN111

Card wires

Bridge board

M

Fig.13

e

f

Fig.14

CN43CN44

Main board

M

CN217

e

CN501

Main board

Chassis base

(No.MB261)1-11

3.1.8 Removing the main amplifier board/subwoofer amplifier boards
(See Figs.15 to 17)

• Prior to performing the following procedures, remove the metal

cover, tuner, video board, rear panel and main board.
(1) From the top side of the main body, disconnect the wires

from the connector (CN206
(See Fig.15.)

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

bundling the wires. (See Fig.16.)

Reference:

After reassembling, bundle the wires with the new tie
band as before. (See Fig.16.)

(3) Disconnect the connectors (CN600

amplifier/subwoofer amplifier boards from the connection
board in the direction of the arrow. (See Fig.16.)

(4) Remove the two screws N and screw P attaching the main

amplifier board. (See Fig.17.)

(5) Removing the two screws Q and screw R attaching the

subwoofer amplifier board. (See Fig.17.)

, CN208) on the bridge board.

, CN700) on the main

Wires

Main amplifier board

Tie band

Bridge board

CN206CN208

Fig.15

Subwoofer amplifier board

Wires

Heat sink

CN600 CN700

Connection board

Fig.16

Q

R

Subwoofer amplifier board

Fig.17

N

P

Main amplifier board

1-12 (No.MB261)

3.1.9 Removing the connection board

r

(See Fig.18.)

• Prior to performing the following procedure, remove the metal

cover, tuner, video board, rear panel, main board and main
amplifier/subwoofer amplifier boards.
(1) From the top side of the main body, remove the two screws

S attaching the connection board on the chassis base.

Reference:

When reassembling, attach the connection board to the sec­tion g and align the projection h of the chassis base to the hole
of the connection board.

S

Connection board

g

h

3.1.10 Removing the bridge board

(See Figs.19 and 20)

• Prior to performing the following procedures, remove the metal

cover, tuner, video board, rear panel and main board.
(1) From the top side of the main body, release the wire holder

bundling the wire. (See Fig.19.)

(2) Disconnect the wires from the connectors (CN206

) on the bridge board. (See Fig.19.)

CN214

Reference:

After connecting the wire to the connector CN214
wire with the wire holder. (See Fig.19.)

(3) Disconnect the parallel wires from the connectors (CN201

CN205, CN213) on the bridge board. (See Fig.19.)

(4) Release the wire holder holding the card wire. (See

Fig.19.)

(5) Remove the two screws T attaching the bridge board on

the 5DVD changer mechanism assembly. (See Fig.20.)

(6) Bend the claw i in the direction of the arrow and remove the

bridge board in an upward direction. (See Fig.20.)

Reference:

• When attaching the bridge board, align the projections (j, k)
in the hole of the bridge board. (See Fig.20.)

• When reassembling, pass the wires through the sections
(m, n) of the plastic chassis. (See Fig.19.)

, CN208,

, fix the

Chassis base

Bridge board

Wires

CN208

,

CN206

CN201

CN213

j

k

S

Fig.18

Wire holder

Card wire

m

Fig.19

Bridge board

T

Parallel wire

CN205

CN214

n

Wire holder

T

i

Fig.20

5DVD change
mechanism
assembly

(No.MB261)1-13

3.1.11 Removing the 5DVD changer mechanism assembly
(See Figs.21 to 23)

• Prior to performing the following procedures, remove the metal

cover, tuner, video board, rear panel, main board and bridge
board.
(1) From the both sides of the main body, remove the two

screws U attaching the 5DVD changer mechanism assem­bly to the front panel assembly. (See Figs.21 and 22.)

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

bundling the wire and parallel wires. (See Fig.22.)

Reference:

After reassembling, bundle the wire and parallel wires
with the new tie band as before. (See Fig.22.)

(3) Take out the 5DVD changer mechanism assembly from the

main body.

Reference:

When attaching the 5DVD changer mechanism assem­bly, pass the wires through the sections (m, n) of the
plastic chassis. (See Fig.22.)

(4) From the both and top sides of the 5DVD changer mecha-

nism assembly, remove the two screws V and screw V’ at-
taching the main chassis. (See Fig.23.)

Reference:

• Align the projections s of the plastic chassis to the
holes of the main chassis before attaching the screw
V’. (See Fig.23.)

• When attaching the screw V’, attach the earth wire
with it. (See Fig.23.)

(5) Take out the main chassis.
(6) From the top side of the 5DVD changer mechanism as-

sembly, remove the three screws W and screw W’ attach­ing the 5DVD changer mechanism assembly on the plastic
chassis.

Reference:

• When reassembling, align the projections (p, q, r) of the
plastic chassis to the holes of the 5DVD changer mechanism
assembly before attaching the screws W and W’. (See
Fig.23.)

• When attaching the screw W’, attach the earth wire with it.
(See Fig.23.)

Front panel assembly

5DVD changer
mechanism assembly

U

Fig.21

5DVD changer mechanism assembly

Front panel assembly

Tie band

m

5DVD changer
mechanism assembly

Wires

n

Fig.22

V

U

p

W

1-14 (No.MB261)

W

W

Main chassis

r

W

V

Fig.23

Plastic chassis

s

V'

s

Earth wire

W'

q

3.1.12 Removing the primary board
(See Figs.19, 21, 22, 24 and 25)

• Prior to performing the following procedures, remove the metal

cover, tuner, video board, rear panel and main board.
(1) From the top side of the main body, release the wire holder

bundling the wire. (See Fig.19.)

(2) Disconnect the wires from the connectors (CN206

CN214) on the bridge board. (See Fig.19.)

Reference:

After connecting the wire to the connector CN214
wire with the wire holder. (See Fig.19.)

(3) Disconnect the parallel wires from the connectors (CN201

, CN213) on the bridge board. (See Fig.19.)

CN205

(4) Release the wire holder holding the card wire. (See

Fig.19.)

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

screws U attaching the 5DVD changer mechanism assem­bly to the front panel assembly. (See Figs.21 and 22.)

Reference:

It is not necessary to remove the bridge board from the
5DVD changer mechanism assembly.

(6) Take out the 5DVD changer mechanism assembly with the

bridge board from the main body.

Reference:

When attaching the 5DVD changer mechanism assem­bly, pass the wires through the sections (m, n) of the
5DVD changer mechanism assembly. (See Fig.22.)

(7) From the top and left sides of the main body, remove the

four screws X and screw Y attaching the primary board on
the chassis base. (See Figs.24 and 25.)

(8) From the forward side of the primary board, disconnect the

power cord from the connector CN200

. (See Fig.25.)

, CN208,

, fix the

Primary board

,

X

Chassis base

Fig.24

Primary board

CN200

Chassis basePower cord

X

Y

Fig.25

(No.MB261)1-15

3.1.13 Removing the FL board
(See Fig.26)

• Prior to performing the following procedures, remove the metal

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

soldered sections (t, u) on the FL board to remove the par­allel wires.

(2) Disconnect the card wire from the connector CN902

FL board.

(3) Remove the four screws Z attaching the FL board.

Reference:

When attaching the FL board, align the projections v of the
front panel assembly in the holes of the FL board before at­taching the screws Z.

on the

Front panel assembly

v

t

Z

FL board

Z

v

ZZ

u

3.1.14 Removing the switch board
(See Fig.27)

• Prior to performing the following procedures, remove the metal

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

three screws AA attaching the switch board.

(2) Take out the switch board and remove the soldered section

w on the switch board to remove the parallel wire.

Reference:

When attaching the switch board, align the projections x in the
holes of the switch board before attaching the screws AA.

3.1.15 Removing the standby LED board
(See Fig.27)

• Prior to performing the following procedures, remove the metal

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

two screws AB attaching the standby LED board.

(2) Take out the standby LED board and remove the soldered

section y on the standby LED board to remove the parallel
wire.

Reference:

When attaching the standby LED board, align the projections
z in the holes of the standby LED board before attaching the
screws AB.

Parallel wire

x

AA

x

AA

w

Switch board

Card wire

Front panel assembly

AA

Parallel wires

x

CN902

Fig.26

z

Standby LED board

Fig.27

Parallel wire

AB

z

AB

y

1-16 (No.MB261)

3.1.16 Removing the encoder board

(See Figs.26 to 29)

• Prior to performing the following procedures, remove the metal

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

knobs toward this side. (See Fig.28.)

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

card wire from the connector CN902
Fig.26.)

(3) Remove the four screws Z, three screws AA and two

screws AB attaching the each board. (See Figs.26 and 27.)

(4) Take out the FL board with the switch and standby LED

boards.

Reference:

It is not necessary to remove the parallel wires.

(5) Remove the eight screws AC attaching the encoder board.

(See Fig.29.)

Reference:

When attaching the encoder board, align the projections aa of
the front panel assembly in the holes of the encoder board be­fore attaching the screws AC. (See Fig.29.)

on the FL board. (See

Volume knob

Sound mode knob

Preset knob

Front panel assembly

Fig.28

Encoder boardFront panel assembly

AC

AC

aa

aa

AC

AC

Fig.29

(No.MB261)1-17