JVC KS-FX611 Service Manual
SERVICE MANUAL
DISP
SCAN
LOUD
CD CHANGER CONTROL
CASSETTE RECEIVER
KS-FX611
KS-FX611
891011127
CD CHANGER CONTROL
MO
LOUD
DISP
SCAN
Multi
Music
Scan
Area Suffix
U
Other area
Contents
Safety precaution
Disassembly method
Adjustment method
Description of major ICs
COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD.
1- 2
1- 3
1-12
1-15~23
No.49677
Feb. 2002
KS-FX611
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-FX611
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-FX611
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
Bottom cover
Heat sink
Fig.4
Rear panel
Fig.5
A
Bottom cover
Joints b
Joints b
1-4
Joints b
Joint b
Rear panel
Fig.6
KS-FX611
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 five 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
CP701 on the main board in the direction of the
arrow.
D
E
C
Rear panel
Fig.7
C
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
CP701
F
F
Top chassis
1-5
KS-FX611
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 eleven 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
Joints c
G
G
Fig.10
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-FX611
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
KS-FX611
Removing the head relay board
(See Fig.4)
1.
Unsolder the soldering b on the head relay board.
2.
Remove the screw C attaching the head relay board.
3.
Remove the head relay board in the direction of the
arrow while releasing the two joints c.
Removing the load arm (See Fig.5)
1.
Remove the E washer attaching the load arm using
a pincette or something like that and remove the
spring d.
2.
Move the part of the load arm marked upwards to
release it from the axis of rotation. Then rotate the
load arm in the direction of the arrow to remove it
from the cach.
Fig.4
Cach
Load arm
Fig.5
Head relay board
Soldering b
C
E washer
Joint c
Spring d
Removing the sub chassis (See Fig.6)
Prior to performing the following procedure, remove
the head relay board.
1.
Remove the screw D attaching the sub chassis.
2.
Push the tab e in the direction of the arrow to detach
the one side of the sub chassis. Then release the
sub chassis from the tab f.
Removing the cassette holder and the
holder arm in the eject mode
(See Fig.7 and 8)
Prior to performing the following procedure, remove
the head relay board, the load arm and the sub
chassis.
1.
Remove the screw E attaching the reinforce bracket.
2.
Remove the reinforce bracket.
Tab f
Sub chassis
Head relay
board
D
Cassette mecha chassis
Cassette holder
Fig.6
Head relay board
Tab e
Reinforce bracket
E
Reinforce
bracket
tab g
3.
Push the tab g fixing the cassette holder in the
direction of the arrow and open the cassette holder
and the holder arm upward until they stop at an
angle of 45 degrees. Move the two joints h to the
side and remove the cassette holder and the holder
arm from the shaft.
1-8
Joint h
Load arm
Holder arm
Fig.7
Joint h
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