JVC KS-FX911 Bedienungsanleitung

SERVICE MANUAL

CASSETTE RECEIVER

No.49730

Apr. 2002

KS-FX911/KS-FX811

Contents

Safety precaution

Disassembly method

Adjustment method

Description of major ICs

1- 2

1- 3

1-17

1-20~29

50W X 4

KS-FX911

Multi

Music

Scan

TAPE

SOUND

VOL VOL

SOURCE

50W X 4

KS-FX811

Multi

Music

Scan

TAPE

SOUND

VOL VOL

SOURCE

KS-FX911

KS-FX811

Difference point

KS-FX911

KS-FX811

LCD Display

Multi

Nega

Dimmer Cellular Muting

Area Suffix

U --------------------- Other Areas

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KS-FX911/KS-FX811

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

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KS-FX911/KS-FX811

1-3

Press the release switch and remove the front panel

unit in the direction of the arrow.

Removing the front panel unit

(See Fig.1)

Remove the two screws Aattaching the front

chassis.

Remove the two screws Bon each side of the body.

Release the two joints aand the two joints bon the

sides. Release the two joints cat the bottom and

remove the front chassis toward the front.

Removing the front chassis

(See Fig.2 to 4)

Disassembly method

Fig.1

Fig.2

Fig.3-1

Fig.3-2Fig.4

Front panel assembly

Eject button

Joint a

Front chassis assembly

Front chassis

assembly

Heat sink Joint b

Joint b

Front chassis assembly

Joint c

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KS-FX911/KS-FX811

1-4

Remove the two screws C and the two screws Don

the left side of the body.

Removing the heat sink (See Fig.5)

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 four joints cand

joint dwith the bottom cover and the body using a

screwdriver.

Removing the bottom cover

(See Fig.6 and 7)

When disengaging the joint dusing a

screwdriver, do not damage or break the

main board.

CAUTION:

Fig.5

Fig.6

Fig.7

Heat sink

Joint c

Joint d

Joint c

Joint d

Bottom cover

Rear panel

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KS-FX911/KS-FX811

1-5

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 E, the five screws F and the two

screws Gattaching the rear panel on the back of the

body. Remove the rear panel.

Remove the two screws Hattaching 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.8 and 9)

Prior to performing the following procedure, remove

the front chassis, the heat sink, bottom cover and the

main amplifier board assembly.

Remove the four screws Iattaching the cassette

mechanism assembly from the top cover.

Removing the cassette mechanism assembly

(See Fig.10)

Fig.8

Fig.9

Fig.10

Main board assembly

Cassette mechanism assembly

Top cover

Rear panel

CN701

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KS-FX911/KS-FX811

1-6

Removing the (LCD & key) control switch

board (See Fig.11 to 13)

Prior to performing the following procedure, remove

the front panel assembly.

Remove the four screws Jattaching the rear cover

on the back of the front panel assembly.

Unjoint the nine joints ewith the front panel and the

rear cover.

Remove the control switch board on the back of the

front panel.

Fig. 11

Fig. 13

Fig. 12

LCD & Key control board

Joint e

Joint e Joint e

Joint e

Front panel

Rear cover

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KS-FX911/KS-FX811

1-7

Remove the screw Aattaching the reinforce bracket

on the bottom of the body.

To release joint a, turn and detach the reinforce

bracket from the side bracket assembly as shown in

Fig.2

Removing the reinforce bracket

(See Fig.1 and 2)

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 bin the direction

of the arrow.

Removing the cassette guide (See Fig.3)

Remove the screw Bon the upper side. Unsolder

the wires on the under side of the head board, if

necessary.

Removing the head board (See Fig.4)

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:

When reassembling, twist the wires by

turning the head board twice remarked c

and pass through the notch das shown

in Fig.4.

REFERENCE:

Head board

Fig.1

Fig.2

Fig.4Fig.3

Mode gear

Reinforce bracket

Joint a

Cassette guide

Tab b

Head board

notch d

Soldering

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KS-FX911/KS-FX811

1-8

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 f.

Move the rear part of the cassette hanger assembly

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

joint bosses g.

Release the holder stabilizer spring from the hooks h

and i, then pull out from the cassette hanger

assembly.

Bring up the rear side of the cassette hanger

assembly to release the joint jand k.

Pull out the cassette catch from the cassette hanger

assembly.

Removing the cassette hanger assembly /

cassette holder (See Fig.6 to 9)

Remove the E-washer attaching the load arm.

Move the load arm in the direction of the arrow and

release the joint eon the cassette catch.

Removing the load arm (See Fig.5)

Fig.5

Fig.6

Fig.7

Fig.9

Fig.8

Load arm

E-washer

Joint e

Cassette holder assembly

Side bracket

Joints f

Cassette holder assembly

Cassette hanger assembly

Cassette hanger

assembly

Boss g

Cassette hanger assembly

Cassette stabilizer spring

Hook i

Hook k

Hook h

Hook j

Cassette holder

assembly Cassette catch

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KS-FX911/KS-FX811

1-9

Remove the screw Cattaching the side bracket

assembly.

Detach the front side of the side bracket assembly

upward and pull out forward to release the joint land

min the rear.

Removing the side bracket assembly

(See Fig.10 to 12)

When reassembling, make sure that the

boss nof 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 n.

CAUTION:

After reattaching the side bracket

assembly, confirm operation.

CAUTION:

Fig.11

Fig.12

Fig.10

Side bracket assembly

Joint l

Joint m

Side bracket assembly

Boss n

Load rack

Boss n

Load rack

Joint l

Joint m

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KS-FX911/KS-FX811

1-10

Remove the band attaching the wire to the head.

Remove the two screws D, 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.18 and 19)

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.20 and 21)

When reattaching the pinch arm spring, set

both end of it to the pinch spring arm (

remarked r).

CAUTION:

When reattaching the head, set the wires

into the groove of the tape guide (Fig.18).

CAUTION:

It is not necessary to remove the slide

chassis assembly.

REFERENCE:

It is not necessary to remove the slide

chassis assembly.

REFERENCE:

Fig.19

Fig.21

Fig.18

Fig.20

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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