JVC KS-FX915R Manual de usuario

SERVICE MANUAL

CASSETTE RECEIVER

No.49613

Feb. 2001

KS-FX915R/KS-FX815

TPTP

RDSRDS

PTYPTY

DISPDISP

8 9 10 11 127

DAB

DISPDISP

SCANSCAN

LOUDLOUD

8 9 10 11 127

KS-FX915R

KS-FX815

KS-FX915R

Area Suffix

EE Russian Federation

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

Difference point

KS-FX915R

KS-FX815

Dimmer Beep

RDS LCD Remocon

Color

Nega

KS-FX915R/KS-FX815

1-2

!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.

Safety precaution

KS-FX915R/KS-FX815

1-3

Location of main parts

Control unit

Display Control unit

Main unit

Main board

Main board assembly

Power IC

Connector to controller

Tuner

pack

Antenna

jack

RCA jack

Changer control

connector

I/O connector

Cassette mechanism

Main board assembly

Connector to controller

Cassette mechanism

C.motor assembly Mechanism control board assembly

Cassette housing Head

Head relay board

Mechanism control board assembly

Flywheel assembly Reel board

Capstan motor assembly

KS-FX915R/KS-FX815

1-4

Disassembly method

Removing the front chassis

(See Fig.1)

1. Remove two screws Aand insert a screwdriver to the

joints aon 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

Fig.2 )

1. Remove the three screws Battaching the heat sink on

the left side of the body, and remove the heat sink.

Removing the bottom cover (See

Fig.3 )

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.1

Fig.2

Front chassis

Heat sink

Fig. 3

Regulator board

KS-FX915R/KS-FX815

1-5

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.

Remove the three screws Dattaching 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 Eattaching the Cassette

mechanism assembly from the top cover.

Removing the control switch board

(See

Fig.7 and 8 )

Remove the front chassis.

Remove the four screws Fattaching the rear cover on the

back of the front panel unit.

Remove the control switch board from the front panel

unit.

Fig. 5

Fig. 7

Fig. 8

Control switch board

Fig. 6

Fig.4

Main amplifier board

CP401

KS-FX915R/KS-FX815

1-6

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 Aattaching the head amplifier

board.

Move the tab aas shown in Fig.2 and remove the

head amplifier board while moving it in the direction

of the arrow.

Removing the head amplifier board.

(See Fig.1 and 2)

Disconnect the 6pin wire from connector CN402 and

the card wire from CN403 on the head amplifier

board (Refer to Fig.1 and 2).

Remove the four screws Bon the bottom of the

cassette mechanism.

Removing the cassette mechanism

assembly (See Fig.1 to 3)

Fig.1

Cassette mechanism ass’y

Head relay

board

6pin

wire

CN402 CN403

CN402

Head amplifier board

Fig.2

Tab a

Head amplifier board

Fig.3

Cassette mechanism ass’y

Head amplifier board

CN403

KS-FX915R/KS-FX815

1-7

Unsolder the soldering bon the head relay board.

Remove the screw Cattaching the head relay board.

Remove the head relay board in the direction of the

arrow while releasing the two joints c.

Removing the head relay board

(See Fig.4)

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.

Removing the load arm (See Fig.5)

Prior to performing the following procedure, remove

the head relay board.

Remove the screw Dattaching the sub chassis.

Push the tab ein 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 sub chassis (See Fig.6)

Prior to performing the following procedure, remove

the head relay board, the load arm and the sub

chassis.

Remove the screw Eattaching the reinforce bracket.

Remove the reinforce bracket.

Push the tab gfixing 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 hto the

side and remove the cassette holder and the holder

arm from the shaft.

Removing the cassette holder and the

holder arm in the eject mode

(See Fig.7 and 8)

Fig.4 CSoldering b Joint c

Fig.6

Tab f

Tab e

Cach

Head relay board

Fig.7

Reinforce bracket

Reinforce

bracket

Cassette holder

Sub chassis

Head relay

board

Joint h

Holder arm

Load arm

Joint h

tab g

Fig.5

Spring d

Load arm E washer

Cassette mecha chassis

KS-FX915R/KS-FX815

1-8

Prior to performing the following procedure, remove

the head relay board and the sub chassis.

Remove the two screws Fattaching the play head

(The spring under the play head comes off at the

same time).

Removing the play head (See Fig.9)

Prior to performing the following procedure, remove

the head relay board and the sub chassis.

Push each tab i in the direction of the arrow and pull

out the pinch rollers on both sides.

Removing the pinch roller ass’y

(See Fig.9)

Unsolder the soldering jon the reel disc board.

Push the seven tabs kon the bottom of the cassette

mechanism assembly in the direction of the arrow.

Removing the reel disc board

(See Fig.10)

Unsolder the two soldering lof the motor and the sub

motor.

Release the sub motor from the three tabs m. Push

the sub motor upward and pull out it.

Remove the belt on the bottom of the cassette

mechanism assembly and remove the two screws G

attaching the motor.

Removing the motor and the sub motor

(See Fig.10 and 11)

The motors can be detached before

removing the load arm.

ATTENTION:

Fig.8

Cassette holder

and holder arm

Joint h

Shaft

Joint h

Fig.9

Tab i

Pinch roller ass’yPinch roller ass’y

Play head

Spring

Fig.11

Sub motor

Tab m

Load arm

Motor

Soldering l

Tab m

Soldering l

Tab m

Soldering j

Pinch roller ass’y

Tab i Tab i

Tab i

Fig.10

Cassette mechanism ass’y

Tabs k

Reel disc board

Soldering j

Tabs k

Motor Belt

Flyhwheel

KS-FX915R/KS-FX815

1-9

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.

Remove the belt on the bottom of the cassette

mechanism ass’y.

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.

Removing the flywheel

(See Fig.10 and 12)

Prior to performing the following procedure, remove

the head relay board, the load arm, the sub chassis,

the cassette holder and the holder arm.

Disengage the part ninside of the reel driver which

engages with the shaft, using a pincette or

something like that. Then remove the reel driver from

the shaft.

Remove the reel driver spring and the reel table.

Removing the reel disc ass’y( )

(See Fig.12 to 14)

When reassembling, make sure to use

a new slit washer.

ATTENTION:

Fig.10

Cassette mechanism ass’y

Tab k

Reel disc board

Soldering j

Tab k

Motor Belt

Flyhwheel

Fig.12

Plate

The part n

Reel driver

Reel disc ass’y( )

Push aside

the gear

Tabs o

Reel disc

ass’y( )

The part n

Reel driver

Tab o

Fig.13

Reel driver

Shaft

The part n

Fig.14

Reel driver spring

Reel table

Slit washer

KS-FX915R/KS-FX815

1-10

Release the plate from the three tabs o.

Push aside the gear over the reel table using a

pincette or something like that.

Remove the reel disc ass’y ( ) as with the reel disc

ass’y ( ).

Removing the reel disc ass’y( )

(See Fig.12 to 15)

Do not break the front panel tab fitted

to the metal cover.

ATTENTION:

Prior to performing the following

procedure, remove the reel disc ( ).

ATTENTION:

Fig.15

Push aside the gear and reattach the reel disc Ass’y( ).

Reel disc ass’y( )

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