JVC KS-FX772R Bedienungsanleitung

SERVICE MANUAL

CASSETTE RECEIVER

No.49694

Mar. 2002

KS-FX772R

CD CHANGER CONTROL

SEL

TP/PTY

DISP

SSM

FM/AM

CD-

DAB

SCM

MODE

78910 11 12

RND

RPT

KS-FX772R

Area Suffix

E Continental Europe

Contents

Safety precaution

Disassembly method

Adjustment method

Description of major ICs

1-2

1-3

1-18

1-22

1-3

KS-FX772R

Press the eject button in the lower right part of the

front panel. Remove the front panel assembly from

the body.

Removing the front panel assembly

(See Fig.1)

Prior to performing the following procedure, remove

the front panel assembly.

Release the four joints aon both sides of the front

chassis assembly and remove the front chassis

assembly toward the front.

Removing the front chassis assembly

(See Fig.2 , 3)

Disassembly method

Fig.1

Fig.2

Fig.3

Front panel assembly

Eject button

Joint a

Front chassis assembly

Front chassis

assembly

Heat sink Joint a

Joint a

1-4

KS-FX772R

Remove the three screws Aon the left side of the

body.

Removing the heat sink (See Fig.4)

Prior to performing the following procedure, remove

the front panel assembly, the front chassis assembly

and the heat sink.

Turn over the body and unjoint the five joints bwith

the bottom cover and the body using a screwdriver.

Removing the bottom cover

(See Fig.5 , 6)

Fig.4

Fig.5

Fig.6

Heat sink

Joint b

Bottom cover

Rear panel

1-5

KS-FX772R

Prior to performing the following procedure, remove

the front panel assembly, the front chassis assembly,

the heat sink and the bottom cover.

Remove the screw B, the three screws C and the

two screws Dattaching the rear bracket on the back

of the body. Remove the rear panel.

Remove the two screws Eattaching the main board

on the bottom of the body. Disconnect connector

CN701 on the main board in the direction of the

arrow.

Removing the main board (See Fig.7 , 8)

Prior to performing the following procedure, remove

the front panel assembly, the front chassis assembly,

the heat sink, the bottom cover and the main board.

Remove the four screws Fattaching the cassette

mechanism section on the back of the top chassis.

Removing the cassette mechanism section

(See Fig.9)

Fig.7

Fig.8

Fig.9

Rear panel

Main board

CN701

Cassette mechanism section

Top chassis

1-6

KS-FX772R

Prior to performing the following procedure, remove

the front panel assembly.

Remove the four screws Gattaching the rear cover

on the back of the front panel assembly.

Unjoint the eleven joints cwith the front panel and

the rear cover.

Remove the control switch board on the back of the

front panel.

Removing the control switch board

(See Fig.10 ~ 12)

Fig.10

Fig.11

Fig.12

Rear cover

Joint c

Joint c Joint c

Joint c

Front panel

Rear cover

Front panel

Control switch board

1-7

KS-FX772R

Turn the mode gear to set to RVS play or

subsequent mode.

Remove the cassette guide from the main chassis

while releasing each two joint tabs ain the direction

of the arrow.

Removing the cassette guide (See Fig.2)

Prior to performing the following

procedures, turn the mode gear on the

bottom of the body until the respective part

comes to the EJECT position (Refer to

Fig.1).

REFERENCE:

Remove the E-washer attaching the load arm.

Move the load arm in the direction of the arrow and

release the joint bon the cassette catch.

Removing the load arm (See Fig.3)

Fig.1

Fig.2

Mode gear

Cassette guide

Tab a

Fig.3

Load arm

E-washer

Joint b

1-8

KS-FX772R

Check the mode is set to EJECT. Push down the

front part of the cassette holder and move in the

direction of the arrow to release the joint c.

Move the rear part of the cassette hanger assembly

in the direction of the arrow to release it from the two

joint bosses d.

Release the holder stabilizer spring from the hooks e

and f, then pull out from the cassette hanger

assembly.

Bring up the rear side of the cassette hanger

assembly to release the joint g and h.

Pull out the cassette catch from the cassette hanger

assembly.

Removing the cassette hanger assembly /

cassette holder (See Fig.4 to 7)

Fig.4

Fig.5

Fig.7

Fig.6

Cassette holder assembly

Side bracket

Joints c

Cassette holder assembly

Cassette hanger assembly

Cassette hanger

assembly

Boss d

Cassette hanger assembly

Cassette stabilizer spring

Hook f

Hook h

Hook e

Hook g

Cassette holder

assembly Cassette catch

1-9

KS-FX772R

Remove the screw Aattaching the side bracket

assembly.

Detach the front side of the side bracket assembly

upward and pull out forward to release the joint iand

jin the rear.

Removing the side bracket assembly

(See Fig.8 to 10)

When reassembling, make sure that the

boss kof the main chassis is set in the

notch of the load rack under the side

bracket assembly. Do not reattach the

load rack on the boss k.

CAUTION:

After reattaching the side bracket

assembly, confirm operation.

CAUTION:

Fig.9

Fig.10

Fig.8

Side bracket assembly

Joint i

Joint j

Side bracket assembly

Boss k

Load rack

Boss k

Load rack

Joint i

Joint j

1-10

KS-FX772R

Remove the polywasher and pull out the pinch arm

(F) assembly.

Remove the compulsion spring.

Removing the pinch arm (F) assembly

(See Fig.11 and 12)

Remove the polywasher and pull out the pinch arm

(R) assembly.

Removing the pinch arm (R) assembly

(See Fig.11 and 13)

Move the slide chassis assembly in the direction of

the arrow to release the two joints land remove from

the main chassis.

Remove the rack link.

Removing the slide chassis assembly

(See Fig.14 and 15)

When reassembling, first reattach the rack

link, and next fit the boss mand hook nof

the slide chassis assembly to the hole of

the main chassis, and engage the two joints

CAUTION:

It is not necessary to remove the head

and the tape guide.

REFERENCE:

Fig.11

Fig.15

Fig.12

Fig.13

Fig.14

Polywasher

Polywasher Pinch arm

(F) assembly

Pinch arm

(R) assembly

Polywasher

Pinch arm (F) assembly

Compulsion spring

Pinch arm

(R) assembly Polywasher

Slide chassis assembly

Joint l

Boss m

Hook n

Rack link

Head

Tape guide

1-11

KS-FX772R

Remove the band attaching the wire to the head.

Remove the two screws B, the head and the head

support spring.

Remove the pinch arm spring from the tape guide.

Remove the tape guide and the pinch spring arm.

Removing the head / tape guide

(See Fig.16 and 17)

Remove the belt at the bottom.

Remove the two polywashers on the upper side.

Pull out each flywheel assembly downward.

Removing the flywheel assembly (F) & (R)

(See Fig.18 and 19)

When reattaching the pinch arm spring, set

both end of it to the pinch spring arm (

remarked o).

CAUTION:

When reattaching the head, set the wires

into the groove of the tape guide (Fig.16).

CAUTION:

It is not necessary to remove the slide

chassis assembly.

REFERENCE:

It is not necessary to remove the slide

chassis assembly.

REFERENCE:

Fig.17

Fig.19

Fig.16

Fig.18

Slide chassis assembly

Head Tape guide

Pinch arm spring

Head

Head support spring

Tape guide

Pinch spring arm

Slid chassis assembly

Flywheel assembly (F)

Flywheel assembly (R)

Belt Polywasher

Polywasher

Flywheel assembly (F)

Flywheel assembly (R)

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