JVC KS-FX230 Service Manual

SERVICE MANUAL

CASSETTE RECEIVER

KS-FX230

KS-FX230

KS-FX230

Area Suffix

/I

40WX4

ATT

SEL

Multi

Music

Scan

SSM

78 9101112

123456

CD CHANGER CONTROL

MO/RND SCAN/RPT

KS

-FX230

CD-CHTUNER TAPE

PROGBAND

SOUND

LOUD

DISP

UF ------------------ China

Contents

Safety precaution 1-2
Disassembly method 1-3

This service manual is printed on 100% recycled paper.

COPYRIGHT 2000 VICTOR COMPANY OF JAPAN, LTD.

Adjustment method 1-9
Description of major ICs 1-12

No.49565

1-1

Jul. 2000

KS-FX230

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

Removing the front chassis (see Fig.1)

1. Disengage the four tabs in the right and left side of
unit and pull the front chassis forward to remove it.

Removing the bottom cover and heat
sink (see Fig.2,3)

1.

Remove one screw A retaining the IC to the heat sink.

2.

Remove two screws B to remove the heat sink.

3.

Turn the upside down, the insert and turn the screwdriver
to remove the bottom cover and protect sheet.

Removing the main board (see Fig.4)

1.

Remove two screws C retaining the rear panel to the
chassis.

2.

Remove two screws D retaining the main board.

KS-FX230

Front chassis

Fig. 1

Bottom cover

Fig. 2

3.

Lift up the main board to remove it. At this time,
remove the connector CP702 connecting the main
board and mechanism assembly.

Removing the rear panel (see Fig.4)

1.

Remove six screws retaining the jacks or the like.

2.

Remove two screws E to the 16-pin jack.

3.

Remove one screw F to remove the line-out jack.

4.

Remove one screw G to remove the antenna jack.
Remove one screw H to remove the changer

controller jack.

Removing the mechanism ass'y (see Fig.5)

1.

Remove four mechanism mounting screws I retaining
the mechanism assembly.

2.

Remove four screws J retaining the cover.

3.

Remove one screw which is the fixation of top cover
and the substrate.

Removing the front panel unit (see Fig.6)

1. Remove four screws K retaining the rear cover.

A

Left side view

BB

Fig. 3

Connection to the mechanism
connector position

C

E

H

F

G

Fig. 4

Mechanism ass'y

JJ

Heat sink

D

Main board

CP702

C

KK

KK

Fig. 6

JJ

Fig. 5

1-3

KS-FX230

<< Cassette mechanism section >>

Removing the head relay board (see Fig.1)

1.

Desolder the lead wires of the loading motor at the 2
positions shown (Red and Black).

2.

Desolder the lead wire of the head at the 3 positions
shown (RED, Yellow and Black).

3.

Remove the three screws A securing the head relay
board.

4.

Shift the interlocking section a securing the head
relay board in the direction shown by the arrow to
remove the board.

Removing the load arm ass'y (see Fig.2)

1.

Using tweezers, detach the mylar washer 1 securing
the load arm ass'y and pull out the load arm ass'y.

NOTE : When reassembling, be sure to use a new

mylar washer.

Red

A

Black

Black

Fig. 1

AA

Yellow

a

Red

Head relay board

Catch

2.3.Shift the load arm ass'y counter clockwise.
Remove the load arm ass'y from the catch.

Removing the cassette holder and arm
ass'y (see Fig.3)

1.

Remove the head relay board.

2.

Remove the load arm ass'y.

3.

Apply DC 6V to the lead wire of the loading motor
ass'y and turn the load gear ass'y to the position
shown in Fig. 3.

4.

Remove the screw B securing the cassette holder
and holder arm ass'y.

5.

Shift the cassette holder and holder arm ass'y in the
direction shown by the arrow and remove them from
the interlocking section b of the sub chassis ass'y.

Removing the sub chassis ass'y (see Fig.4)

1.

Remove the head relay board.

Load arm ass'y

Cassette holder

C

1

Fig. 2

B

Holder

b

D

2.

Remove the load arm ass'y.

3.

Remove the cassette holder and holder arm ass'y.

4.

Remove the two screw C and D securing the sub
chassis ass'y.

NOTE : When removing the sub chassis ass'y, the

mode gear may become detached. In this
case, set it back to the original position.

1-4

Sub chassis ass'y

Loading gear ass'y

Loading motor ass'y

Fig. 3

Apply DC 6V

Removing the play head (see Fig.4)

1.

Remove the head relay board.

KS-FX230

2.

Remove the load arm ass'y.

3.

Remove the cassette holder and holder arm ass'y.

4.

Remove the sub chassis ass'y.

5.

Disengage the spring holding the play head down.

6.

Remove the two screws E securing the play head.

Removing the pinch roller ass'y (see Fig.5,6)

1.

Remove the head relay board.

2.

Remove the load arm ass'y.

3.

Remove the cassette holder and holder arm ass'y.

4.

Remove the sub chassis ass'y.

5.

Detach the mylar washers c at the two positions
securing the right and left pinch roller ass'y.

Play head

E

Spring

Fig.4

Pinch roller ass'y

c

Fig.5

E

c

NOTE : When reassembling, be sure to use new

mylar washers. Also, make sure that grease
is not adhering to the pinch rollers.

6. Pull out the pinch rollers.

Removing the reel disk ass'y (see Fig.7)

1.

Remove the head relay board.

2.

Remove the load arm ass'y.

3.

Remove the cassette holder and holder arm ass'y.

4.

Remove the sub chassis ass'y.

5.

Detach the mylar washer d from the tip by first
pressing down the reel feather to expose it.

NOTE : When reassembling, be sure to use a new

mylar washer

Pinch roller ass'y

Reel feather

push

Reel disk ass'y

Sub chassis

Fig.6

d

Fig.7

1-5

KS-FX230

Removing the head plate (see Fig. 8,9)

1.

Remove the head amp PCB.

2.

Remove the load arm ass'y.

3.

Remove the cassette holder and holder arm ass'y.

4.

Remove the sub chassis ass'y.

5.

Remove the right and left pinch roller ass'y.

6.

From the rear of the head plate, detach the mylar
washer e and the washer pressing the forward/
reverse plate down. (see Fig. 8)

Forward/reverse plate

e

Spring

F

7.

Remove the screw F fixing the metal detection lever
and removal spring as shown in Fig. 8.

8.

Remove the head plate.

9.

Pull out the mode gear. (see Fig. 9)

NOTE : When installing the mode gear, set it to the

arrow mark.

Removing the flywheel ass'y (see Fig. 9)

1.

Remove the head relay PCB.

2.

Remove the load arm ass'y.

3.

Remove the cassette holder and holder arm ass'y.

4.

Remove the sub chassis ass'y.

5.

Remove the head plate.

6.

Disengage the main belt from the flywheel ass'y.

(see Fig. 8)

7.

Remove E washers f at the two positions which
secure the capstan shaft away from the surface.

(see Fig. 9)

Metal tape detection lever

Fig.8

Head plate

f

Capstan shaft

Fig.9

Main belt

f

Marking

Mode gear

8.

Pull out the flywheel ass'y from the rear.

Removing the reel disk PCB (see Fig. 10)

1.

Remove the head relay PCB.

2.

Remove the load arm ass'y.

3.

Remove the cassette holder and holder arm ass'y.

4.

Remove the sub chassis ass'y.

5.

Straighten the curved tab g securing the reel disk
PCB. (see Fig. 10)

6.

Remove the two screws G fixing the reel disc PCB.

7.

Remove the reel disk PCB.

1-6

g

G

Reel desk PCB

Fig.10

Removing the loading motor ass'y

1.

Remove the head relay ass'y.

2.

Remove the load arm ass'y.

(see Fig. 11)

KS-FX230

Loading motor ass'y

h

H

Worm gear

3.

Remove the Mylar washer h fixing the worm gear.

(see Fig.11)

NOTE : When reassembling, be sure to use a new

mylar washer.

4.5.Remove the screw H fixing the loading motor ass'y.
(see Fig.11)

Remove the two screws I fixing the loading motor
ass'y. (see Fig 11)

(Procedures for reassembling)

1.2.Insert the mode gear into the sub chassis ass'y.

Install the sub chassis ass'y and secure it with the
two screws C and D as shown in Fig.12.

NOTE : The set arm ass'y and the mode gear

should be positioned as shown in Fig.12.

Sub chassis ass'y

C

Mode gear

Motor bracket

I

Fig.11

Sub chassis ass'y

D

Set arm ass'y

3. Attach the cassette holder as shown in Fig.13. In this

case, first pass the tab of the section i through the
mechanism j, then attach the cassette holder in the
direction shown by the arrow.

Fig.12

Cassette holder

i

j

Fig.13

1-7