JVC KS-FX811, KS-FX911 Service Manual

KS-FX911/KS-FX811

SERVICE MANUAL

CASSETTE RECEIVER

KS-FX911/KS-FX811

Contents

SOUND

U

SOURCE

F

R

D

VOL

VOL

50W X 4

KS-FX911

Multi
Music
Scan

TAPE

KS-FX911

SOUND

U

SOURCE

F

R

D

VOL

VOL

50W X 4

KS-FX811

Multi
Music
Scan

TAPE

Area Suffix

KS-FX811

Difference point

KS-FX911

KS-FX811

LCD Display

Multi

Nega

Dimmer

Cellular Muting

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

Safety precaution
Disassembly method
Adjustment method
Description of major ICs

COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD.

1- 2
1- 3
1-17
1-20~29

No.49730

Apr. 2002

KS-FX911/KS-FX811

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

Disassembly method

<Main body>

KS-FX911/KS-FX811

Removing the front panel unit

(See Fig.1)

1.

Press the release switch and remove the front panel
unit in the direction of the arrow.

Removing the front chassis
(See Fig.2 to 4)

1.

Remove the two screws A attaching the front
chassis.

2.

Remove the two screws B on each side of the body.

3.

Release the two joints a and the two joints b on the
sides. Release the two joints c at the bottom and
remove the front chassis toward the front.

Eject button

A

Joint a

Front panel assembly

Fig.1

Front chassis assembly

Fig.2

Joint c

Joint c

B

Joint a

Front chassis assembly

Heat sink

Fig.3-1

Fig.3-2Fig.4

Joint b

Joint b

B

Front chassis
assembly

1-3

KS-FX911/KS-FX811

Removing the heat sink (See Fig.5)

1.

Remove the two screws C and the two screws D on
the left side of the body.

Removing the bottom cover

(See Fig.6 and 7)

Prior to performing the following procedure, remove
the front panel assembly, the front chassis assembly
and the heat sink.

1.

Turn over the body and unjoint the four joints c and
joint d with the bottom cover and the body using a
screwdriver.

D

Joint c

C

Fig.5

Heat sink

D

Bottom cover

CAUTION:

When disengaging the joint d using a
screwdriver, do not damage or break the
main board.

Joint d

Rear panel

Bottom cover

Joint c

Joint c

Fig.6

Joint c

Joint d

Rear panel

Fig.7

1-4

KS-FX911/KS-FX811

Removing the main board

(See Fig.8 and 9)

Prior to performing the following procedure, remove
the front panel assembly, the front chassis assembly,
the heat sink and the bottom cover.

1.

Remove the screw E, the five screws F and the two
screws G attaching the rear panel on the back of the
body. Remove the rear panel.

2.

Remove the two screws H attaching the main board
on the bottom of the body. Disconnect connector
CN701 on the main board in the direction of the
arrow.

G

H

Rear panel

F

E

F

FG

Fig.8

H

Removing the cassette mechanism assembly

(See Fig.10)

Prior to performing the following procedure, remove
the front chassis, the heat sink, bottom cover and the
main amplifier board assembly.

1.

Remove the four screws I attaching the cassette
mechanism assembly from the top cover.

Main board assembly

Fig.9

Cassette mechanism assembly

I

I

Fig.10

CN701

I

I

Top cover

1-5

KS-FX911/KS-FX811

Removing the (LCD & key) control switch
board (See Fig.11 to 13)

Prior to performing the following procedure, remove
the front panel assembly.

1.

Remove the four screws J attaching the rear cover
on the back of the front panel assembly.

2.

Unjoint the nine joints e with the front panel and the
rear cover.

3.

Remove the control switch board on the back of the
front panel.

Front panel

J

J

Fig. 11

Joint e

Rear cover

J

J

Joint e

Joint e

LCD & Key control board

Joint e

Fig. 12

Fig. 13

1-6

KS-FX911/KS-FX811

REFERENCE:

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).

Removing the reinforce bracket

(See Fig.1 and 2)

1.

Remove the screw A attaching the reinforce bracket
on the bottom of the body.

2.

To release joint a, turn and detach the reinforce
bracket from the side bracket assembly as shown in
Fig.2

Removing the cassette guide (See Fig.3)

1.

Turn the mode gear to set to RVS play or
subsequent mode.

2.

Remove the cassette guide from the main chassis
while releasing each two joint tabs b in the direction
of the arrow.

Mode gear

Reinforce bracket

A

Fig.1

Joint a

Reinforce bracket

Removing the head board (See Fig.4)

1.

Remove the screw B on the upper side. Unsolder
the wires on the under side of the head board, if
necessary.

REFERENCE:

Cassette guide

When reassembling, twist the wires by
turning the head board twice remarked c
and pass through the notch d as shown
in Fig.4.

Head board

B

Fig.2

Head board

Soldering

notch d

Tab b

Tab b

c

Fig.4Fig.3

1-7

KS-FX911/KS-FX811

Removing the load arm (See Fig.5)

1.

Remove the E-washer attaching the load arm.

2.

Move the load arm in the direction of the arrow and
release the joint e on the cassette catch.

Removing the cassette hanger assembly /
cassette holder (See Fig.6 to 9)

1.

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.

2.

Move the rear part of the cassette hanger assembly
in the direction of the arrow to release it from the two
joint bosses g.

Load arm

E-washer

Cassette holder assembly

Side bracket

Joints f

Joint e

Fig.5

Boss g

Cassette hanger
assembly

Boss g

3.

Release the holder stabilizer spring from the hooks h
and i, then pull out from the cassette hanger
assembly.

4.

Bring up the rear side of the cassette hanger
assembly to release the joint j and k.

5.

Pull out the cassette catch from the cassette hanger
assembly.

Cassette holder
assembly

Cassette holder assembly

Fig.6

Cassette hanger assembly

Cassette stabilizer spring

Hook i

Hook h

Fig.7

Cassette hanger assembly

Cassette catch

Cassette holder assembly

1-8

Hook j

Fig.8

Cassette hanger assembly

Hook k

Fig.9

KS-FX911/KS-FX811

Removing the side bracket assembly

(See Fig.10 to 12)

1.

Remove the screw C attaching the side bracket
assembly.

2.

Detach the front side of the side bracket assembly
upward and pull out forward to release the joint l and
m in the rear.

CAUTION:

CAUTION:

When reassembling, make sure that the
boss n of 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.

After reattaching the side bracket
assembly, confirm operation.

Side bracket assembly

Joint l

Joint m

C

Side bracket assembly

Fig.10

Side bracket assembly

Joint l

Joint m

Load rack

Load rack

Boss n

Boss n

Fig.11

Fig.12

1-9