JVC KS-F525 Service Manual
SERVICE MANUAL
DISP
SCAN
LOUD
CASSETTE RECEIVER
KS-F525
KS-F525
LOUD
DISP
SCAN
Contents
Safety precaution
Disassembly method
Adjustment method
Description of major ICs
Multi
Music
Scan
1- 2
1- 3
1-12
1-15~20
Area Suffix
EE ----- Russian Federation
COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD.
No.49708
Feb. 2002
KS-F525
Safety precaution
!
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.
1-2
Disassembly method
<Main body>
Removing the front panel assembly
(See Fig.1)
1.
Press the eject button in the lower right part of the
front panel. Remove the front panel assembly from
the body.
Removing the front chassis assembly
(See Fig.2 and 3)
KS-F525
Front panel assembly
Eject button
Fig.1
Tab a
Prior to performing the following procedure, remove
the front panel assembly.
1.
Release the four joint tabs a on both sides of the
front chassis assembly and remove the front chassis
assembly toward the front.
Tab a
Front chassis assembly
Heat sink
Fig.2
Tab a
Tab a
Front chassis
assembly
Fig.3
1-3
KS-F525
Removing the heat sink (See Fig.4)
1.
Remove the three screws A on the left side of the
body.
Removing the bottom cover
(See Fig.5 and 6)
Prior to performing the following procedure, remove
the front panel assembly, the front chassis assembly
and the heat sink.
1.
Turn over the body and unjoint the five joints b with
the bottom cover and the body using a screwdriver.
Joint b
A
Joints b
Heat sink
Fig.4
Rear panel
Fig.5
A
Bottom cover
Joints b
Joints b
Joints b
Bottom cover
Joint b
Rear panel
Fig.6
1-4
KS-F525
Removing the main board
(See Fig.7 and 8)
Prior to performing the following procedure, remove
the front panel assembly, the front chassis assembly,
the heat sink and the bottom cover.
1.
Remove the screw B, the two screws C and the two
screws D attaching the rear bracket on the back of
the body. Remove the rear panel.
2.
Remove the two screws E attaching the main board
on the bottom of the body. Disconnect connector
CP501 on the main board in the direction of the
arrow.
D
E
Rear panel
C
Fig.7
Main board
B
C
D
E
Removing the cassette mechanism section
(See Fig.9)
Prior to performing the following procedure, remove
the front panel assembly, the front chassis assembly,
the heat sink, the bottom cover and the main board.
1.
Remove the four screws F attaching the cassette
mechanism section on the back of the top chassis.
Fig.8
Cassette mechanism section
F
F
Fig.9
CP501
F
F
Top chassis
1-5
KS-F525
Removing the control switch board
(See Fig.10 to 12)
Prior to performing the following procedure, remove
the front panel assembly.
1.
Remove the four screws G attaching the rear cover
on the back of the front panel assembly.
2.
Unjoint the ten joints c with the front panel and the
rear cover.
3.
Remove the control switch board on the back of the
front panel.
G
Front panel
G
Rear cover
Fig.10
Joints c
G
G
Joints c
Joints c
Rear cover
Front panel
Joints c
Fig.11
Control switch board
Fig.12
1-6
<Removal of the cassette mechanism>
KS-F525
Cassette mechanism ass’y
Removing the head amplifier board.
(See Fig.1 and 2)
1.
For the 6pin wire extending from connector CN402
on the head amplifier board, disconnect it from the
head relay board.
2.
Disconnect the card wire from connector CN403 on
the head amplifier board.
3.
Remove the screw A attaching the head amplifier
board.
4.
Move the tab a as shown in Fig.2 and remove the
head amplifier board while moving it in the direction
of the arrow.
Removing the cassette mechanism
assembly (See Fig.1 to 3)
1.
Disconnect the 6pin wire from connector CN402 and
the card wire from CN403 on the head amplifier
board (Refer to Fig.1 and 2).
Head relay
board
6pin
wire
CN402
A
CN403
CN402
Fig.1
CN403
Head amplifier board
Fig.2
Head amplifier board
Tab a
2.
Remove the four screws B on the bottom of the
cassette mechanism.
Head amplifier board
B
Cassette mechanism ass’y
B
Fig.3
1-7
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