JVC KS-LX200R Manual de usuario

1-1

KS-LX200R

SERVICE MANUAL

No.49573

Oct. 2000

KS-LX200R

This service manual is printed on 100% recycled paper.

CASSETTE RECEIVER

KS-LX200R

Area Suffix

EX Continental Europe

Central Europe

KS-LX200R

911 12

OFFSEL

Contents

Safety precaution 1-2

Disassembly method 1-3

Adjustment method 1-13

Description of major ICs 1-17

1-2

KS-LX200R

!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

1-3

KS-LX200R

Remove the two screws Aattaching the bottom

cover to the top chassis on the bottom of the body.

Remove the two screws Battaching the top chassis

on both sides of the body.

Remove the screw Cand the three screws D

attaching the heat sink on the left side of the body.

Remove the two screws Eand the screw Fon the

back of the body.

Remove the two screws Gon the upper side of the

body.

Move the top chassis upward and disconnect the

cassette mechanism connector from the main board

connector by pulling it. Remove the top chassis from

the body.

Disassembly method

Removing the top chassis(See Fig.1 to 5)

Fig.1

Fig.2

Fig.3

Fig.4Fig.5

Bottom cover

Top chassis

Heat sink

Top chassis

1-4

KS-LX200R

Prior to performing the following procedure, remove

the top chassis.

Remove the screw Sattaching the bracket (L).

Disconnect the flexible harness from connector

CN701, the card wire from CN702 on the main board

and the harness from CN503 and CN504

respectively.

Remove the three screws Hattaching the main

board assembly to the bottom cover on the upper

side of the body.

Remove the screw Iattaching the rear panel and the

bottom cover on the back of the body. Move the

main board in the direction of the arrow and release

the two joints a. (At this point, the main board can be

removed with the rear panel and the rear heat sink.)

Remove the screw Jand the two screws Kattaching

the rear heat sink on the back of the body.

Remove the two screws Land the screw Mattaching

the rear panel. Now, the main board assembly will be

removed.

Removing the main board assembly

(See Fig.6 to 8)

When reassembling, correctly engage the

switch S561 and S562 on the main board

with the part eof the operation assembly

(Refer to Fig.7, 18 and 19).

ATTENTION:

Fig.6

Fig.8

Fig.7

CN504

CN701

Front panel assembly

Main board assembly

CN702

CN503

S652

Main board S651

Rear panel

Rear heat sink

Joint aJoint a

Bracket (L)

1-5

KS-LX200R

Prior to performing the following procedure, remove

the top chassis assembly.

Disconnect the flexible harness from connector

CN701 on the main board assembly.

Remove the four screws Nattaching the front panel

assembly on both sides of the body. Remove the

front panel toward the front.

Removing the front panel assembly

(See Fig.9 to 11)

Prior to performing the following procedure, remove

the top chassis assembly and the front panel

assembly.

Remove the four screws Oattaching the front board

on the back of the front panel assembly and release

the eight joints b.

Removing the Front Board (See Fig.12)

Fig.9

Fig.10Fig.11

Fig.12

CN701

Front panel assembly

Main board assembly

CN701

Front panel assembly

Joints b

1-6

KS-LX200R

Prior to performing the following procedure, remove

the top chassis assembly and the front panel

assembly.

Disconnect the harness from connector CN503 and

CN504 on the main board.

Remove the four screws Pand detach the lifter unit

from the bottom cover.

Removing the lifter unit (See Fig.13)

Prior to performing the following procedure, remove

the lifter unit.

Remove the washer attaching the clutch assembly

and detach the clutch assembly from the shaft of the

lifter unit.

Remove the two screws Qattaching the feed motor

(L).

Removing the feed motor (L) (See Fig.14)

Prior to performing the following procedure, remove

the lifter unit.

Remove the washer attaching the clutch assembly

and detach the clutch assembly from the shaft of the

lifter unit.

Remove the two screws Rattaching the feed motor

(R).

Removing the feed motor (R) (See Fig.15)

Clutch assembly

Fig.13

Lifter unit assembly

CN504

CN503

Fig.14

Fig.15

Lifter unit assembly

Feed motor (L) assembly

Washer Q

Clutch assembly

Washer

Feed motor (R) assembly

Lifter unit assembly

1-7

KS-LX200R

Prior to performing the following procedure, remove

the top chassis assembly, the front panel assembly

and the lifer unit.

Remove the three screws Sattaching the right and

left brackets which fix gears on both sides of the

operation assembly.

Remove the springs 5 and 6 from the operation

assembly.

Disconnect the card wire from connector CN702 on

the main board and remove the operation assembly.

Removing the operation assembly

(See Fig.16 to 19)

When reassembling, correctly engage the

switch S561 and S562 on the main board

and the right gear with the part cof the

operation assembly.

ATTENTION: Fig.16

Fig.17

Fig.18Fig.19

Spring 6

CN702

Operation assembly

Spring 5

Operation assembly

S652

S651

Operation assembly

S652 S651

Bracket (R) Bracket (L)

Bracket (R)

1-8

KS-LX200R

Prior to performing the following procedure, remove

the operation assembly.

Remove the six screws Tattaching the button panel

on the operation assembly.

Pull out the operation switch board from inside of the

button panel.

Removing the operation switch board

(See Fig.20 and 21)

Prior to performing the following procedure, remove

the top chassis.

Remove the four screws Uand the cassette

mechanism assembly from the top chassis.

Removing the cassette mechanism

assembly (See Fig.22)

Button panel

Operation switch board

Button panel

CD mechanism assembly

Fig.20

Fig.21

Fig.22

U U

1-9

KS-LX200R

Disconnect the wire from connector CP401 on the

head amplifier board.

Remove the screw A.

Remove the head amplifier board in the direction of

the arrow to unhook two joints a.

Disconnect connector CP402 on the head amplifier

board from the connector board.

Disassembly method

Removing the head amplifier board

(See Fig.1)

Unsolder soldering band con the connector board.

Remove the three screws C.

Remove the connector board in the direction of the

arrow to unhook joint d.

Removing the connector board

(See Fig.3)

Prior to performing the following procedure, remove

the head amplifier board and the mechanism

bracket.

Prior to performing the following procedure, remove

the head amplifier board.

Remove the four screws Bon the underside of the

cassette mechanism assembly.

Removing the mechanism bracket

(See Fig.2)

Connector board Head amplifier board

Joints

Fig.1

Fig.2

Fig.3

Mechanism bracket

Soldering

Joint

Connector board

1-10

KS-LX200R

Prior to performing the following procedure, remove

the connector board.

Remove the slit washer eretaining the load arm

assembly.

Remove the spring gin the load arm assembly

marked joint f.

Draw out the load arm assembly from the shaft and

rotate in the direction of the arrow to remove it from

the cach.

Removing the load arm assembly

(See Fig.4)

Prior to performing the following procedure, remove

the connector board and the load arm assembly.

Remove the two screws Dattaching the sub

chassis.

Draw out the sub chassis from the holder arm shaft

in the direction of the arrow (marked joint h).

Remove the sub chassis from the main chassis

upwards.

Removing the sub chassis (See Fig.4)

Prior to performing the following procedure, remove

the connector board and the load arm assembly.

Remove the screw Eattaching the cassette holder /

holder arm.

Draw out the holder arm shaft from the sub chassis

in the direction of the arrow (marked joint h).

Disengage two joints iand remove the cassette

holder / holder arm.

Removing the cassette holder / holder

arm (See Fig.5)

The spring gcomes off as the load

arm assembly is drawn out from the

shaft.

ATTENTION:

Load arm assembly

Holder arm Load arm assembly

Joint h

Joint f

Slit washer e

Load arm

assembly

Spring g

Sub chassis

Cassette holder

Main chassis

Worm gear

Fig.4

Fig.5

EJoint h

Sub chassis

Cassette holder

Main chassis

Joints i

Holder arm

Cach

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