JVC RC-EX30B User manual

SERVICE MANUAL

2004/6

CD PORTABLE SYSTEM

MB27920046

RC-EX30B

TABLE OF CONTENTS

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

2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15

PUSH

PLAY/PAUSESTOP

PROGRAM/

CLOCK SET

HBS/

PRESET EQ

PRESET

DOWN

DISPLAY

TAP E

BAND

RANDOM

TUNER

GROUP

REMOTE

SENSOR

TAPE

FM MODE

/BEAT CUT

PROGRAM/

CLOCK SET

DOWN

INTRO

HBS/

PRESET EQ

REPEAT

STANDBY/ON

DISPLAY

MUTING

PRESET

VOLUME

RM-SRCEX30J REMOTE CONTROL

123

456

789

OVER

CD/

RANDOM

TUNER/

BAND

GROUP

–

Area suffix

A ------------------------ Australia

B ------------------------------ U.K.

E ---------- Continental Europe

EN ----------- Northern Europe

EV ------------- Eastern Europe

SERVICE POLICY

No service part is available for this model.

Exchange only.

1-2 (No.MB279)

SPECIFICATION

Design and specifications are subject to change without notice.

CD player CD capacity 1 CD

Signal-to-noise ratio 75 dB

Dynamic range 60 dB

Tuner Frequency range FM 87.5 - 108.0 MHz

AM 522 - 1 629 kHz

Antennas Telescopic antenna for FM

Ferrite core antenna for AM

Cassette deck Frequency response 60 Hz - 10 000 Hz

Wow & flutter 0.15% (WRMS)

Fast wind time Approx. 150 sec. (C-60 cassette)

General Speakers 9 cm cone ×2

Speaker impedance 4 Ω

Output power 4 W (2 W + 2 W) at 4 Ω(10% THD)

Output terminals PHONES ×1

Power supply AC 230 V , 50 Hz DC 9 V (R20 (SUM-1)/D (13D)-size batteries ×6)

Power consumption 18 W (at operation) 3 W (on standby)

Dimensions 420 mm ×178 mm ×250 mm (W/H/D)

Mass Approx. 3.2 kg (without batteries)

(No.MB279)1-3

SECTION 1

PRECAUTION

This service manual does not describe PRECAUTION.

1-4 (No.MB279)

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

(No.MB279)1-5

SECTION 3

DISASSEMBLY

3.1 Main body

3.1.1 Removing the rear cover assembly section

(See Fig.1 to 3)

(1) Remove the eight screws A, the three screws Band the

four screws Cattaching the rear cover assembly on the

back of the body.

(2) Remove the battery cover on the back of the body and re-

move the two screws Dattaching the rear cover assembly.

(3) Move the rear cover assembly in the direction of the arrow

and remove. At this time, disconnect the wire from connec-

tor CN406 and FM-ANT on the main board.

Fig.1

Fig.2

Fig.3

Battery cover

FM-ANT

Top cover assembly

Rear cover assembly

Tuner board

CN406

Front panel assembly

Main board

1-6 (No.MB279)

3.1.2 Removing the top cover assembly section and the front panel assembly section

(See Fig.4 to 8)

• Prior to performing the following procedure, remove the rear

cover assembly.

(1) Release the tab aof the handle using a screwdriver. Return

the handle below and pull out in the direction of the arrow.

(2) Disconnect the wire from connector CN404 and 4pin con-

nector on the main board.

(3) Remove the six screws Eand the two screws Fattaching

the top cover.

(4) Draw out the top cover assembly from the front panel as-

sembly section backward.

(5) Disconnect the wire from connector CN501 and CN506 on

the main board, and disconnect the card wire from connec-

tor CN507 and CN508.

(6) Disconnect the wire from board connector CON301 of the

cassette mechanism assembly.

Fig.4

Fig.5

Fig.6

Fig.7

Fig.8

tab atab a

Handle

CN404

Main board

4pin connector

Front panel assembly

Top cover assembly

CD door

Main board

CN501,CN506

Main board

CN508,CN507

Cassette mechanism board

CON301

(No.MB279)1-7

3.1.3 Removing the main body

(See Fig.9, 10)

Caution:

Make sure to solder the short-circuit point on the CD servo

board before disconnecting the card wire from connector

CN201 on the main board and from the CD servo board. If you

don't observe this instruction, the pickup may be damaged.

(1) Remove the eight screws Gattaching the main board on

the top cover assembly.

(2) Disconnect the wire from connector CN501, CN502,

CN511, CN202, CN401 and CN504 on the main board.

(3) Disconnect the card wire from connector CN201 on the

main board.

Caution:

If necessary, cut the band.

Fig.9

Fig.10

CN504

CN501

CN202

CN201

CN502

GGG

CN511

Band

CN401

Unsolder

Short-circuit point

CD servo board

1-8 (No.MB279)

3.1.4 Tuner board

(See Fig.11)

• Prior to performing the following procedure, remove the main

board.

(1) Remove the three screws Hattaching the tuner board.

Fig.11

3.1.5 Removing the top switch board

(See Fig.12)

• Prior to performing the following procedure, remove the main

board and the tuner board.

(1) Remove the four screws Jattaching the top switch board.

Fig.12

Tuner board

Top switch board

(No.MB279)1-9

3.1.6 Removing the volume board and the power switch board

(See Fig.13 to 16)

• Prior to performing the following procedure, remove the main

board.

(1) Remove the three screws Kattaching the volume board.

(2) Pull out the volume board from the volume knob.

(3) Remove the four screws Lattaching the cover on the side

of the power switch.

(4) Release the three tabs bof the cover on the side of the

power switch.

(5) Remove the three screws Mattaching the power switch

board to the cover.

Caution:

If necessary, unsolder the solder points.

Fig.13

Fig.14

Fig.15

Fig.16

Volume board

Solder point

Top cover assembly

Volume board

Volume knob Switch board

Solder point

Side top cover

Switch board

Tab b

Side top cover Power switch board

Solder point

1-10 (No.MB279)

3.1.7 Removing the CD mechanism assembly

(See Fig.17)

• Prior to performing the following procedure, remove the main

board.

(1) Remove the four screws Nattaching the CD mechanism

assembly.

Fig.17

CD mechanism

assembly

Top cover assembly

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