JVC KS-F54 Manual de usuario

SERVICE MANUAL

2003/4

KS-F545

CASSETTE RECEIVER

4982820034

KS-F545

TABLE OF CONTENTS

1 Important Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

2 Disassembly method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

3 Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18

4 Description of major ICs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22

MODE SCM

MO RPT

Area Suffix

EE ------- Russian Federation

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KS-F545

1-2 (No.49828)

SECTION 1

Important Safety Precautions

1.1 Safety Precautions

!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.

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KS-F545

(No.49828)1-3

SECTION 2

Disassembly method

2.1 Main body

2.1.1 Removing the front panel assembly

(See Fig.1)

(1) Press the release button and remove the front panel as-

sembly.

Fig.1

2.1.2 Removing the bottom cover

(See Fig.2)

(1) Turn the main body upside down.

(2) Insert a screwdriver under the joints to release the two

joints aon the left side, two joints bon the right side and

joint con the back side of the main body, then remove the

bottom cover from the main body.

CAUTION:

When releasing the joints using a screwdriver, do not damage

the main board.

Fig.2

2.1.3 Removing the front chassis

(See Fig.3)

• Prior to performing the following procedures, remove the front

panel assembly and bottom cover.

(1) Remove the screw Aon the both sides of the main body.

(2) Release the two joints dand two joints eon the both sides

of the main body, then remove the front chassis toward the

front.

Fig.3

Front panel assembly

Release button

Bottom cover

Joint b

Joint c

Joint a

Joint dJoint e

Front chassis

Joint d

Joint e

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KS-F545

1-4 (No.49828)

2.1.4 Removing the heat sink

(See Fig.4)

• Prior to performing the following procedure, remove the front

panel assembly.

(1) Remove the two screws Band two screws Cattaching the

heat sink on the left side of the main body, and remove the

heat sink.

Fig.4

2.1.5 Removing the rear panel

(See Fig.5)

• Prior to performing the following procedure, remove the front

panel assembly and bottom cover.

(1) Remove the two screws D, two screws Eand screw Fat-

taching the rear panel on the back side of the main body.

Fig.5

2.1.6 Removing the main board

(See Fig.6)

• Prior to performing the following procedures, remove the front

panel assembly, bottom cover, front chassis, heat sink and

rear panel.

(1) Remove the two screws Gattaching the main board on the

top chassis.

(2) Disconnect the connectors CP401 on the main board from

the cassette mechanism assembly.

Fig.6

Heat sink

CB C

Rear panel

Main board

CP401

Top chassis

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KS-F545

(No.49828)1-5

2.1.7 Removing the cassette mechanism assembly

(See Fig.7)

• Prior to performing the following procedures, remove the front

panel assembly, bottom cover, front chassis, heat sink, rear

panel and main board.

(1) Disconnect the wire from the connector CN402 on the

mecha board.

(2) Disconnect the card wire from the connector CN403 on the

mecha board.

(3) Remove the four screws Hattaching the cassette mecha-

nism assembly from the top chassis.

Fig.7

2.1.8 Removing the mecha board

(See Fig.8)

• Prior to performing the following procedures, remove the front

panel assembly, bottom cover, front chassis, heat sink, rear

panel and main board.

(1) Disconnect the wire from the connector CN402 on the

mecha board.

(2) Disconnect the card wire from the connector CN403 on the

mecha board.

(3) Remove the screw Jattaching the mecha board.

(4) Bend the hook f in the direction of the arrow 1 and move the

mecha board in the direction of the arrow 2.

(5) Remove the mecha board from the mecha bracket (L) of

the top chassis. Fig.8

Top chassis

Cassette mechanism assembly

CN403 CN402

Mecha board

Mecha board Hook f

Top chassis

Mecha bracket (L)

CN402

CN403

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KS-F545

1-6 (No.49828)

2.1.9 Removing the front board

(See Fig.9 to 11)

• Prior to performing the following procedures, remove the front

panel assembly.

(1) Remove the four screws Kattaching the rear cover on the

back side of the front panel assembly. (See Fig.9.)

(2) Release the eleven joints g, the front panel assembly and

the rear cover become separate. (See Fig.10.)

(3) Remove the front board from the front panel assembly.

(See Fig.11.)

Fig.9

Fig.10

Fig.11

K K

KRear cover

Joints g

Front board

Front panel assembly

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KS-F545

(No.49828)1-7

2.2 Cassette mechanism assembly

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).

Fig.1

2.2.1 Removing the cassette guide

(See Fig.2)

(1) Turn the mode gear to set to RVS play or subsequent

mode.

(2) Remove the cassette guide from the main chassis while re-

leasing each two joint tabs ain the direction of the arrow.

Fig.2

2.2.2 Removing the load arm

(See Fig.3)

(1) Remove the E-washer attaching the load arm.

(2) Move the load arm in the direction of the arrow and release

the joint bon the cassette catch.

Fig.3

Mode gea

Cassette guide

Tab a

Load arm

E-washer

Joint b

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KS-F545

1-8 (No.49828)

2.2.3 Removing the cassette hanger assembly / cassette holder

(See Fig.4 to 7)

(1) Check the mode is set to EJECT. Push down the front part

of the cassette holder and move in the direction of the ar-

row to release the joint c.

(2) Move the rear part of the cassette hanger assembly in the

direction of the arrow to release it from the two joint bosses

(3) Release the holder stabilizer spring from the hooks eand

f, then pull out from the cassette hanger assembly.

(4) Bring up the rear side of the cassette hanger assembly to

release the joint gand h.

(5) Pull out the cassette catch from the cassette hanger as-

sembly.

Fig.4

Fig.5

Fig.6

Fig.7

Cassette holder assembly

Side bracket

Joints c

Cassette holder assembly

Cassette hanger

assembly

Boss d

Cassette hange

assembly

Cassette stabilizer spring

Hook f

Hook e

Cassette hanger

assembly

Hook h

Hook g

Cassette holder

assembly

Cassette holder assembly

Cassette hanger assembly

Cassette catch

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KS-F545

(No.49828)1-9

2.2.4 Removing the side bracket assembly

(See Fig.8 to 10)

(1) Remove the screw Aattaching the side bracket assembly.

(2) Detach the front side of the side bracket assembly upward

and pull out forward to release the joint i and j in the rear.

CAUTION:

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 op-

eration.

Fig.8

Fig.9

Fig.10

Side bracket assembly

Joint i

Joint j

Joint i

Joint j

Side bracket assembly

Boss k

Load rack

Boss k

Load rack

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KS-F545

1-10 (No.49828)

2.2.5 Removing the pinch arm (F) assembly

(See Fig.11 and 12)

(1) Remove the polywasher and pull out the pinch arm (F) as-

sembly.

(2) Remove the compulsion spring.

2.2.6 Removing the pinch arm (R) assembly

(See Fig.11 and 12)

(1) Remove the polywasher and pull out the pinch arm (R) as-

sembly.

2.2.7 Removing the slide chassis assembly

(See Fig.13 and 14)

REFERENCE:

It is not necessary to remove the head and the tape guide.

(1) Move the slide chassis assembly in the direction of the ar-

row to release the two joints land remove from the main

chassis.

(2) Remove the rack link.

CAUTION:

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

Fig.11

Fig.12

Fig.13

Fig.14

Polywashe

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

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