JVC KSFX-915 Service manual
KS-FX915R/KS-FX815
SERVICE MANUAL
CASSETTE RECEIVER
KS-FX915R/KS-FX815
KS-FX915R
KS-FX815
Difference point
KS-FX915R
KS-FX815
DISPDISP
TP TP
RDSRDS
PTYPTY
LOUDLOUD
DISPDISP
SCANSCAN
8 9 10 11 127
8 9 10 11 127
RDS
O
X
Dimmer
O
X
KS-FX915R
KS-FX815
Beep
O
X
DAB
MO
MO
Area Suffix
Russian Federation
O
X
LCD
Color
Nega
EE
Remocon
Contents
Safety precaution 1- 2
Location of main parts 1- 3
Disassembly method 1- 4
Adjustment method
Description of major ICs 1-14
COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD.
1-11
No.49613
Feb. 2001
Location of main parts
Control unit
Display
Main unit
Main board
Changer control
I/O connector
Control unit
connector
KS-FX915R/KS-FX815
RCA jack
Antenna
jack
Cassette mechanism
Cassette mechanism
C.motor assembly
Mechanism control board assembly
Power IC
Head relay board
Main board assembly
Main board assembly
Connector to controller
Connector to controller
Mechanism control board assembly
Capstan motor assembly
Tuner
pack
Cassette housing
Head
Flywheel assembly
Reel board
1-3
KS-FX915R/KS-FX815
Disassembly method
Removing the front chassis (See Fig.1)
1. Remove two screws A and insert a screwdriver to the
joints a on the side of the front chassis and two joints b
on the right side, then detach the front chassis toward the
front side.
Removing the heat sink (See
1. Remove the three screws B attaching the heat sink on
the left side of the body, and remove the heat sink.
Fig.2 )
A
B
A
a
a
Front chassis
Fig.1
b
b
B
Removing the bottom cover (See
1.2.Turn the body upside down.
Insert a screwdriver to the two joints c and two joints d on
both sides of the body and the joint e on the back of the
body, then detach the bottom cover from the body.
Fig.3 )
Heat sink
B
Fig.2
c
Regulator board
e
d
Fig. 3
1-4
Removing the main amplifier board assembly
(See Fig.4 and 5)
1.
Remove the front chassis.
2.
Remove the bottom cover.
3.
Remove the two screws C attaching the main amplifier
board assembly on the bottom of the body.
KS-FX915R/KS-FX815
CP401
Main amplifier board
4.
Remove the three screws D attaching the main amplifier
board assembly on the back of the body.
5.
Disconnect connector CP401 on the main amplifier board
assembly from the cassette mechanism assembly.
Removing the Cassette mechanism assembly
(See
Fig.6 )
Remove the front chassis.
1.
Remove the bottom cover.
2.
Remove the main amplifier board assembly.
3.
Remove the four screws E attaching the Cassette
4.
mechanism assembly from the top cover.
D
C
C
Fig.4
D
Fig. 5
E
Removing the control switch board
Fig.7 and 8 )
(See
1.
Remove the front chassis.
2.
Remove the four screws F attaching the rear cover on the
back of the front panel unit.
Remove the control switch board from the front panel
3.
unit.
Fig. 6
F
F
Fig. 7
Control switch board
Fig. 8
E
F
F
1-5
KS-FX915R/KS-FX815
<Removal of the cassette mechanism>
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
1-6
KS-FX915R/KS-FX815
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.
Joint h
Load arm
Holder arm
Fig.7
Joint h
1-7
KS-FX915R/KS-FX815
Removing the play head (See Fig.9)
Prior to performing the following procedure, remove
the head relay board and the sub chassis.
1.
Remove the two screws F attaching the play head
(The spring under the play head comes off at the
same time).
Shaft
Joint h
Pinch roller ass’y
Fig.8
Play head
Cassette holder
and holder arm
Joint h
Shaft
Pinch roller ass’y
Removing the pinch roller ass’y
(See Fig.9)
Prior to performing the following procedure, remove
the head relay board and the sub chassis.
1.
Push each tab i in the direction of the arrow and pull
out the pinch rollers on both sides.
Removing the reel disc board
(See Fig.10)
1.
Unsolder the soldering j on the reel disc board.
2.
Push the seven tabs k on the bottom of the cassette
mechanism assembly in the direction of the arrow.
Removing the motor and the sub motor
(See Fig.10 and 11)
Tab i
Tab i
Soldering j
G
Motor
F
Pinch roller ass’y
Fig.9
Reel disc board
Tabs k
Tabs k
G
Tab i
Spring
Tab i
Cassette mechanism ass’y
Flyhwheel
Belt
Fig.10
1.
Unsolder the two soldering l of the motor and the sub
motor.
2.
Release the sub motor from the three tabs m. Push
the sub motor upward and pull out it.
3.
Remove the belt on the bottom of the cassette
mechanism assembly and remove the two screws G
attaching the motor.
ATTENTION:
The motors can be detached before
removing the load arm.
1-8
Sub motor
Tab m
Load arm
Soldering j
Tab m
Soldering l
Tab m
Soldering l
Motor
Fig.11
KS-FX915R/KS-FX815
Removing the flywheel
(See Fig.10 and 12)
1.
Prior to performing the following procedure, remove
the head relay board, the load arm, the sub chassis,
the cassette holder, the holder arm and the reel disc
board.
2.
Remove the belt on the bottom of the cassette
mechanism ass’y.
3.
Remove the slit washer attaching the flywheel on the
upper side of the cassette mechanism ass’y and pull
out the flywheel downward. Then remove another
flywheel in the same way.
ATTENTION:
When reassembling, make sure to use
a new slit washer.
Removing the reel disc ass’y( )
(See Fig.12 to 14)
Soldering j
G
Motor
Plate
Reel disc board
G
Slit washer
Tab k
Tab o
Cassette mechanism ass’y
Tab k
Belt
Fig.10
Reel driver
The part n
Tabs o
Flyhwheel
Reel disc
ass’y( )
Push aside
the gear
Prior to performing the following procedure, remove
the head relay board, the load arm, the sub chassis,
the cassette holder and the holder arm.
1.
Disengage the part n inside of the reel driver which
engages with the shaft, using a pincette or
something like that. Then remove the reel driver from
the shaft.
2.
Remove the reel driver spring and the reel table.
The part n
Slit washer
Shaft
Fig.13
The part n
Reel driver
Fig.12
Reel driver spring
Reel disc ass’y( )
Reel driver
Reel table
Fig.14
1-9
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