KS-FX288
Q
Q
3
7
6
3
1
5
1
5
0
SERVICE MANUAL
CASSETTE RECEIVER
TEL 13942296513 QQ 376315150 892498299
KS-FX288
8
9
2
4
9
8
2
9
9
TEL 13942296513 QQ 376315150 892498299
TEL
13942296513
Contents
Safety precaution
Disassembly method
Adjustment method
Description of major ICs
Q
Q
3
7
6
3
1
9
8
0
5
1
5
Area Suffix
UF China
1- 2
1- 3
1- 12
1- 16
2
4
9
8
2
9
9
w
w
w
.
xia
o
y
u
1
6
3
.
c
COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD.
o
m
No.49662
Dec. 2001
KS-FX288
Safety precaution
7
Q
Q
!
TEL 13942296513 QQ 376315150 892498299
3
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.
6
3
1
5
1
5
0
8
9
2
4
9
8
2
9
9
TEL 13942296513 QQ 376315150 892498299
TEL
13942296513
Q
Q
3
7
6
3
1
5
1
5
0
8
9
2
4
9
8
2
9
9
1-2
w
w
w
.
xia
o
y
u
1
6
3
.
c
o
m
KS-FX288
Disassembly method
Q
TEL 13942296513 QQ 376315150 892498299
Detaching the front panel unit
Q
( See Fig.1 )
Push the Release button in the direction of arrow to
detach the front panel unit.
Removing the front chassis
( See Fig. 2 and 3 )
Disengage the four tabs ( a ) in the right and left sides of
unit and pull the front chassis forward to remove it.
3
7
6
3
1
5
1
5
0
Front panel unit
8
2
9
Fig. 1
Bottom cover
4
9
Push the release button
2
8
Front chassis
bc
a
9
9
TEL 13942296513 QQ 376315150 892498299
TEL
Removing the bottom cover
( See Fig. 2 to 4 )
1. Removing the front chassis.
2. Turn the unit up side down.
3. Insert the four engagements ( b, c, d, e ) to the
4. Turn the screwdriver and remove the bottom
13942296513
screwdriver .
cover.
Q
Q
Front chassis
7
3
a
Bottom cover
6
3
1
Top chassis
0
5
1
5
Fig. 2
Fig. 3
e
4
2
9
8
Bottom cover
9
a
8
2
d
9
9
w
w
w
.
xia
o
y
u
1
6
Rear panel
3
.
c
Fig. 4
o
m
1-3
KS-FX288
Removing the heat sink (See Fig.5)
1. Removing the front chassis.
2. Removing the bottom cover
Q
Q
3. Remove the three screws ( 1 and 1' ) retaining the
heat sink.
Removing the main board assembly
TEL 13942296513 QQ 376315150 892498299
( See Fig. 5 to 7)
1. Removing the front chassis.
2. Removing the bottom cover.
3. Removing the heat sink.
Attach the heat sink with a screw ( 1' ) on operat-
( )
ing checks.
4. Remove the two screws ( 2 ) retaining the main
board assembly.
5. Remove the six screws ( 3 ) and one screw ( 3' ) retaining
the rear panel.
6. Separate the main board assembly and cassette
TEL
mechanism assembly.
7. Take out the main board assembly.
7
3
13942296513
6
3
1
5
1
5
0
Q
Q
1
3
7
6
8
Fig. 5
3
9
1
5
Heat sink
2
5
1
4
0
9
8
1'
9
8
2
4
2
9
1
8
2
2
9
9
9
TEL 13942296513 QQ 376315150 892498299
9
w
w
w
.
xia
o
y
u
3
1
Rear panel
6
Main board assembly
Fig. 6
Fig. 7
3
.
c
o
2
3'
3
3
m
1-4
Q
Removing the cassette mechanism assembly
7
Q
3
( See Fig. 8 )
1. Removing the front chassis.
2. Removing the bottom cover.
3. Removing the heat sink.
4. Removing the main board assembly.
5. Remove the four screws ( 4 ) retaining the cassette
mechanism.
6. Separate the top chassis and cassette mechanism.
6
3
1
5
1
5
0
8
Cassette mechanism
4
4
2
9
9
4
8
KS-FX288
2
9
Front side
9
TEL 13942296513 QQ 376315150 892498299
Removing the operation switch board
( See Fig. 9 to 11)
TEL
1. Detaching the front panel unit.
2. Turn the front panel back side down.
3. Remove the four screws ( 5 ) retaining the front
4. Open the front cover gradually by disengaging the
5. Place the front panel unit front side down.
6. Disengage the three engagements ( i ) on the
13942296513
cover
three engagements ( g ) while pushing the top of
the front cover in the arrow "A" direction, then
disengage the three engagements ( h ) on the both
sides.
bottom to separate the front cover from the front
panel.
(Be careful not to lose the button springs.)
Q
Q
h
7
3
5
Front panel
g
5
6
4
Front cover
5
1
3
Top chassis
Fig. 8
A
0
5
1
Front cover
g
8
Fig. 9
Fig. 10
9
4
2
TEL 13942296513 QQ 376315150 892498299
g
5
9
9
2
8
9
4
5
iii
h
h
w
w
w
.
xia
Operation switch board
o
y
u
1
6
3
.
c
o
Fig. 11
m
1-5
KS-FX288
Head amplifier board
Removing the head amplifier board
7
( See Fig. 12 )
Q
Q
1. Removing the front chassis.
2. Removing the bottom cover.
3. Removing the heat sink.
4. Removing the main board assembly.
5. Removing the cassette mechanism.
6. Remove the screw ( 6 ) retaining the head ampliÂfier board.
7. Shift the two inter rocking sections ( j ) securing
TEL 13942296513 QQ 376315150 892498299
the head amplifier board in the direction shown by
the arrow "B" to remove the printed circuit board.
8. From the connector CJ901 on the head amplifier
board from connector wire out going to the head
relay board.
Removing the chassis assembly
3
6
3
1
5
1
5
0
CJ901
To head relay board
B
8
j
9
j
4
2
6
Fig. 12
Relay board
9
8
2
9
9
TEL 13942296513 QQ 376315150 892498299
( See Fig. 13 and 14 )
1. Removing the front chassis.
2. Removing the bottom cover.
TEL
3. Removing the heat sink.
4. Removing the main board assembly.
5. Removing the cassette mechanism.
6. Removing the head amplifier board.
7. Turn the left side to cassette mechanism.
8. Remove the screw ( 7 ) retaining the relay board.
9 Shift the one inter rocking sections ( k ) securing
the relay board in the direction shown by the
arrow "C" to remove the printed circuit board.
10. Turn the back side down, remove the four screws
( 8 ) retaining the chassis assembly.
13942296513
3
Q
Q
Chassis assembly
7
8
8
6
3
1
1
5
C
Fig. 13
5
0
9
9
2
8
9
4
2
9
8
7
k
8
1-6
w
w
w
.
xia
o
y
u
1
6
3
.
c
o
Fig. 14
8
m
<Cassette mechanism assembly>
KS-FX288
Prior to performing the following procedures, remove
Q
TEL 13942296513 QQ 376315150 892498299
the head amplifier board, the relay board and the
Q
mechanism bracket.
Removing the direction switch board
Unsolder the three wires a on the direction switch
1.
board.
Remove the one screw A attaching the direction
2.
switch board.
Removing the FF / REW lever assembly
Remove the screw B attaching the FF / REW lever
1.
assembly on the back of the cassette mechanism
assembly.
Remove the screw C on the upper side of the FF /
2.
REW lever assembly.
Lift and pull forward the FF / REW lever assembly to
3.
disengage the joints b, c, d and e.
3
7
6
3
1
5
1
5
0
(See Fig.1)
(See Fig.1)
Joint e
8
Joint d
C
4
2
9
FF / REW lever assembly
A
Soldering a
Direction switch board
Fig.1
9
8
Joint c
B
2
Joint b
9
9
TEL 13942296513 QQ 376315150 892498299
TEL
Reattaching the FF / REW lever assembly
1.
2.
13942296513
(See Fig.1)
Reattach the FF / REW lever assembly to the joint c
on the back of the chassis.
Reattach the pinch-roller shaft e, the change lever d
and the return link e to the chassis.
Q
Q
3
7
6
3
1
5
1
5
0
8
9
2
4
9
8
2
9
9
w
w
w
.
xia
o
y
u
1
6
3
.
c
o
m
1-7
KS-FX288
Pinch-roller (R) assembly
7
Q
Q
Shaft
TEL 13942296513 QQ 376315150 892498299
Removing the playback head (See Fig.2)
Prior to performing the following procedure, remove
the direction switch board and the FF / REW lever
assembly.
3
Remove the P arm spring (r)
from the chassis.
6
P arm spring (r)
1
3
A arm spring (b)
5
S support plate
C washer
1
5
FF roller
D
0
A arm spring (a)
Playback head
P arm spring (f)
Fig.2
Pinch-roller (F) assembly
4
2
9
8
Remove the P arm spring (f)
from the chassis.
9
8
Shaft
2
9
9
TEL 13942296513 QQ 376315150 892498299
Remove the screw D attaching the playback head.
1.
Remove the C washer and pull out the FF roller.
2.
TEL
Remove the S support plate, the A arm spring (a)
3.
and (b), the playback head.
ATTENTION:
Removing the pinch-roller (R) and (F)
assembly (See Fig.2)
Prior to performing the following procedure, remove
the direction switch board and the FF / REW lever
assembly.
Remove the P arm spring (f) in the pinch-roller (F)
1.
assembly from the chassis.
Remove the P arm spring (r) in the pinch-roller (R)
2.
assembly from the chassis.
13942296513
The A arm spring (a) differs from the A
arm spring (b).
Q
Q
3
7
6
3
1
5
1
5
0
8
9
2
4
9
8
2
9
9
Draw out the pinch roller (F) and (R) assembly from
3.
the shaft.
ATTENTION:
w
ATTENTION:
1-8
The P arm spring (f) differs from the P
arm spring (r).
w
w
The pinch roller (F) assembly differs
from the pinch roller (R) assembly.
.
xia
o
y
u
1
6
3
.
c
o
m
KS-FX288
Removing the cassette hanger / cassette
holder (See Fig.3)
Q
TEL 13942296513 QQ 376315150 892498299
Prior to performing the following procedure, remove
Q
the FF / REW lever assembly.
From the rear of the unit, bend the two tabs f
1.
outwards and disengage the two joints g in the
direction of the arrow.
Push the eject lever and remove the cassette holder
2.
from the playback head. Disengage the two joints h
of the cassette hanger / cassette holder and the eject
lever in the direction of the arrow.
Lift the cassette hanger / cassette holder and disengage
3.
the joint i of the return link and the eject lever.
Removing the reel disc assembly
Prior to performing the following procedure, remove
the FF / REW lever assembly and the cassette
hanger / cassette holder.
3
7
6
3
1
5
1
5
0
(See Fig.4)
Joint g
Cassette holder
9
8
Cassette hanger
Chassis
Tab f
Tab f
C washer
2
Fig.3
4
Joint g
Return link
Joint i
8
9
2
Eject lever
Joint h
Joint h
9
9
TEL 13942296513 QQ 376315150 892498299
Remove the C washer and pull out reel disc assembly.1.
TEL
Removing the motor assembly
2.
13942296513
ATTENTION:
Unsolder the two wires j on the motor assembly.1.
ATTENTION:
Turn over the cassette mechanism assembly and
remove the main belt and the sub-belt from the
motor pulley.
ATTENTION:
Replace with a new C washer when
reattaching.
(See Fig.5)
To replace the sub-belt, remove the
main belt and the sub-belt from the
motor pulley. Then remove the three
screws E and one screw F. Replace
with a new sub-belt while lifting the reel
base assembly slightly.
The main belt can now be removed.
Q
Q
6
7
3
Flywheel (BF)
3
1
1
5
C washer
0
5
Fig.4
Main-belt
E
9
8
Sub-belt
9
2
8
9
4
2
Reel disc assembly
Motor assembly
Motor pulley
G
G
Soldering j
E
9
3.
Remove the two screws G attaching the motor
assembly.
w
w
w
.
xia
o
y
u
1
6
3
Flywheel (BR)
.
c
o
m
Reel base assembly
E
Fig.5
F
1-9
KS-FX288
Removing the Flywheel (BF) and (BR)
assembly (See Fig.4 and 5)
C washer
Prior to performing the following procedure, remove
Q
Q
the cassette hanger / cassette holder.
From the upper side of the cassette mechanism
1.
assembly, remove the C washer from each shaft of
the flywheel (BF) and (BR).
Turn over the cassette mechanism assembly and
2.
remove the main belt. Pull out the flywheel (BF) and
(BR) downward respectively.
TEL 13942296513 QQ 376315150 892498299
Removing the reel base assembly
Raise the part k of the reel base assembly slightly
1.
and remove the selector link (B) on the front side of
the cassette mechanism assembly by turning it as
shown in Fig.10.
3
7
6
1
5
3
(See Fig.5 and 6)
1
5
0
Flywheel (BF)
8
C washer
9
Fig.4
Main-belt
E
2
4
9
Reel disc assembly
Motor assembly
Sub-belt
G
2
8
Motor pulley
9
9
TEL 13942296513 QQ 376315150 892498299
Remove the three screws E and the one screw F
2.
on the underside of the cassette mechanism
TEL
assembly.
ATTENTION:
13942296513
The reel base assembly is not
repairable. Handle with care.
Inside of the reel base assembly
Q
Q
Flywheel (BR)
k
3
7
6
3
1
0
5
1
5
Reel base assembly
E
Fig.5
Pinch-roller (R) assembly
8
9
E
F
G
9
4
2
Soldering j
8
2
9
9
1-10
w
w
w
.
xia
o
y
u
1
6
Selector link (B).
3
.
c
Turn the selector link (B).
o
m
Fig.6Fig.7
Q
Removing the mute switch board
(See Fig.8)
Unsolder the two wires l on the mute switch board on
1.
Q
the back of the cassette mechanism assembly.
Remove the screw H attaching the mute switch
2.
board.
3
7
6
3
1
5
1
5
Cassette mechanism assembly
0
8
9
4
2
Soldering l
H
8
9
Rower switch
Mute
switch board
KS-FX288
2
9
Motor assembly
9
TEL 13942296513 QQ 376315150 892498299
Soldering m
Removing the power switch (See Fig.9)
Prior to performing the following procedure, remove
the motor assembly.
Unsolder the two wires m on the power switch on the
1.
side of the cassette mechanism assembly.
Remove the screw I attaching the power switch.
2.
TEL
13942296513
Q
Q
3
7
6
I
3
Fig.8
Cassette mechanism assembly
Power switch
1
5
1
5
0
Fig.9
8
9
2
4
9
8
2
9
TEL 13942296513 QQ 376315150 892498299
9
w
w
w
.
xia
o
y
u
1
6
3
.
c
o
m
1-11
KS-FX288
Adjustment method
Test Instruments reqired for adjustment
Q
Q
1. Digital osclloscope(100MHz)
2. Frequency Counter meter
3. Electric voltmeter
4. Wow & flutter meter
5. T est T apes
VT724....................... for DOLBY level measurement
VT739............For playback frequency measurement
VT712....For wow flutter & tape speed measurement
VT703..................... For head azimuth measurement
TEL 13942296513 QQ 376315150 892498299
6. T orque gauge .................... Cassette type for CTG-N
Measuring conditions(Amplifier section)
Power supply voltage.............. DC14.4V (10.5 - 16V)
Load impedance ........... 4 (2Speakers connection)
Line out............................................................ 20k
3
7
1
6
3
(mechanism adjustment)
5
1
5
Standard volume position
0
Balance and Bass,Treble volume .Fader
:Center(Indication"0")
Loudness,Dolby NR,Sound,Cruise:Off
Volume position is about 2V at speaker output with
following conditions.Playback the test tape VT721.
AM mode 999kHz/62dB,INT/400Hz,30%
FM mono mode 97.9MHz/66dB,INT/400Hz,22.5kHz
FM stereo mode 1kHz,67.5kHz dev . pilot7.5kHz dev.
Output level 0dB(1 V,50 /open terminal)
4
2
9
8
modulation signal on recieving.
deviation pilot off mono
9
8
2
9
9
TEL 13942296513 QQ 376315150 892498299
Frequency Band
TEL
Band
13942296513
FM
AM
87.5-108MHz
531-1602KHz
50KHz step
9KHz step
Q
Q
3
7
6
3
1
5
1
5
0
8
9
2
4
9
8
2
9
9
1-12
w
w
w
.
xia
o
y
u
1
6
3
.
c
o
m
Q
Arrangement of adjusting & test points
Cassette mechanism
(Surface)
Q
7
3
Tape speed adjust
6
3
1
5
1
Motor assembly
5
0
8
9
2
4
9
8
2
KS-FX288
9
9
TEL 13942296513 QQ 376315150 892498299
Azimuth screw
Head section view
TEL
13942296513
Head azimuth screw
Q
Q
Fixed screw
3
7
6
3
Playback head
1
5
1
5
0
8
9
2
4
9
8
2
9
TEL 13942296513 QQ 376315150 892498299
9
w
w
w
Height adjusting screw c
Height adjusting screw b
.
xia
Playback head
Height adjusting screw a
o
y
u
1
6
3
.
c
o
m
1-13
Loading...