JVC KS-FX815R, KS-FX915 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

RDS

O X

Dimmer

O X

KS-FX915R

KS-FX815

Beep

O X

DAB

Area Suffix

Russian Federation

O X

LCD

Color Nega

Remocon

Contents

Safety precaution 1- 2 Location of main parts 1- 3 Disassembly method 1- 4 Adjustment method Description of major ICs 1-14

1-11

No.49613

Feb. 2001

KS-FX915R/KS-FX815

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

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

C.motor assembly

Mechanism control board assembly

Power IC

Head relay board

Main board assembly

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 )

Front chassis

Fig.1

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

Fig.2

Regulator board

Fig. 3

1-4

Removing the main amplifier board assembly

(See Fig.4 and 5)

Remove the front chassis.

Remove the bottom cover.

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

Remove the three screws D attaching the main amplifier board assembly on the back of the body.

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.

Remove the bottom cover.

Remove the main amplifier board assembly.

Remove the four screws E attaching the Cassette

4. mechanism assembly from the top cover.

Fig.4

Fig. 5

Removing the control switch board

Fig.7 and 8 )

(See

Remove the front chassis.

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

Fig. 7

Control switch board

Fig. 8

1-5

KS-FX915R/KS-FX815

Cassette mechanism ass’y

Removing the head amplifier board.

(See Fig.1 and 2)

For the 6pin wire extending from connector CN402 on the head amplifier board, disconnect it from the head relay board.

Disconnect the card wire from connector CN403 on the head amplifier board.

Remove the screw A attaching the head amplifier board.

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)

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

CN403

CN402

Fig.1

CN403

Head amplifier board

Fig.2

Head amplifier board

Tab a

Remove the four screws B on the bottom of the cassette mechanism.

Head amplifier board

Cassette mechanism ass’y

Fig.3

1-6

KS-FX915R/KS-FX815

Removing the head relay board

(See Fig.4)

Unsolder the soldering b on the head relay board.

Remove the screw C attaching the head relay board.

Remove the head relay board in the direction of the arrow while releasing the two joints c.

Removing the load arm (See Fig.5)

Remove the E washer attaching the load arm using a pincette or something like that and remove the spring d.

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

E washer

Joint c

Spring d

Removing the sub chassis (See Fig.6)

Prior to performing the following procedure, remove the head relay board.

Remove the screw D attaching the sub chassis.

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.

Remove the screw E attaching the reinforce bracket.

Remove the reinforce bracket.

Tab f

Sub chassis

Head relay

board

Cassette mecha chassis

Cassette holder

Fig.6

Head relay board

Tab e

Reinforce bracket

tab g

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

+ 15 hidden pages