JVC RC-EX25S Service Manual
SERVICE MANUAL
CD PORTABLE SYSTEM
MB29820046
RC-EX25S
SERVICE POLICY
No service part is available for this model.
Exchange only.
M
UTIN
G
F
M M
O
D
E
P
RO
G
R
A
M
/
C
L
O
C
K
S
E
T
A
d
d
"
/"
HB
S/
PRE
S
STANDBY/ON DISPLAY
TUNER/
CD/
BAND
RANDOM
INTRO STOP
FM MODE
HBS/
CD REPEAT/
+
PRESET EQ
MUTING
–
PUSH
TAPE
CD PLAY
/PAUSE
+
VOLUMEPRESET
–
PR
ESET
TA
P
E
R
CD REPEA
ANDO
M
T
CD
TUNER
REMOTE
SENSOR
BA
N
D
DISPLAY
E
S
AU
/P
Y
PLA
ET EQ
OP
ST
Area suffix
RM-SRCEX25A REMOTE CONTROL
A ------------------------ Australia
B ------------------------------ U.K.
E ---------- Continental Europe
EN ----------- Northern Europe
EV ------------- Eastern Europe
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
COPYRIGHT © 2004 Victor Company of Japan, Limited
No.MB298
2004/6
SPECIFICATION
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 13 W (at operation) 3 W (on standby)
Dimensions 420 mm × 178 mm × 250 mm (W/H/D)
Mass Approx. 3.2 kg (without batteries)
Design and specifications are subject to change without notice.
1-2 (No.MB298)
SECTION 1
PRECAUTION
This service manual does not describe PRECAUTION.
(No.MB298)1-3
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.
1-4 (No.MB298)
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 B and the
four screws C attaching 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 D attaching 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 connector CON901
and FM-ANT on the main board.
A
C
B
C
A
D
A
Main board
FM-ANT
Rear cover assembly
D
Battery cover
Fig.1
Top cover assembly
Fig.2
Main board
Front panel assembly
CON901
Fig.3
(No.MB298)1-5
3.1.2 Removing the top cover assembly section and the front panel assembly section
(See Fig.4 to 7)
• Prior to performing the following procedure, remove the rear
cover assembly.
(1) Disconnect the wire from connector CON401 on the main
board.
(2) Remove the four screws E and the two screws F attaching
the top cover.
(3) Draw out the top cover assembly from the front panel as-
sembly section backward.
(4) Disconnect the wire from connector CON301
on the main board, and disconnect the card wire from connector CN501
(5) Disconnect the wire from board connector CON301 of the
cassette mechanism assembly.
and CN502.
and CON402
CD door
Top cover assembly
Main board
E
Front panel assembly
CON401
Fig.4
Top cover assembly
E
Main board
CN501,CN502
Cassette mechanism board
CON301
F
Fig.6
Main board
CON301
Main board
CON402
Main board
CON401
1-6 (No.MB298)
Main board
Fig.7
EE
Fig.5
3.1.3 Removing the main body
(See Fig.8, 9)
Caution:
Make sure to solder the short-circuit point on the CD servo
board before disconnecting the card wire from connector
CON201
you don’t observe this instruction, the pickup may be damaged.
(1) Remove the eight screws G attaching the main board on
(2) Disconnect the wire from connector CON701
(3) Disconnect the card wire from connector CON201
(4) Disconnect the wire from CD door switch of the top cover
on the main board and from the CD servo board. If
the top cover assembly.
, CON202,
and CON601 on the main board.
on the
main board.
section.
CD door switch
G
CON601
Band
3.1.4 Removing the top switch board
(See Fig.10)
• Prior to performing the following procedure, remove the main
board.
(1) Remove the four screws H attaching the top switch board.
CON701
CON201
G
CD servo board
Top switch board
Clamp
Fig.8
Fig.9
CON202
G
Unsolder
Short-circuit point
H
Fig.10
H
(No.MB298)1-7
3.1.5 Removing the volume board and the power switch board
(See Fig.11 to 14)
• Prior to performing the following procedure, remove the main
board.
(1) Remove the three screws J attaching the volume board.
(2) Pull out the volume board from the volume knob.
(3) Disconnect the wire from connector CON702
ume board.
(4) Remove the four screws K attaching the cover on the side
of the power switch.
(5) Release the three tabs a of the cover on the side of the
power switch.
(6) Remove the three screws L attaching the power switch
board to the cover.
on the vol-
Ta b
a
Volume board
J
Volume knob
Top cover assembly
J
Side top cover
Switch board
K
Fig.13
L
L
CON702
Fig.11
Switch board
Side top cover
Power switch board
Fig.14
Volume board
1-8 (No.MB298)
J
CON702
J
Fig.12
Loading...