JVC KS-F350R Bedienungsanleitung

SERVICE MANUAL

CASSETTE RECEIVER

No.49526

Dec. 1999

This service manual is made from 100% redycled paper.

KS-F350R/KS-F353R

KS-FX450R/KS-FX453R

KS-F350R / KS-F353R

KS-FX450R / KS-FX453R

Area Suffix

E ---- Continental Europe

Contents

Safety precaution1-2

Instructions1-3~14

Location of main parts2-1

Disassembly method2-2

Adjustment method 2-7

Description of major ICs2-11

Block diagram2-19

Standard schematic diagrams2-20

Printed circuit boards2-23~24

Parts list3-1~15

ATT

FUNC

BAND

PROG

PRESET

DISC

Model

KS-F350R

KS-F353R

KS-FX450R

KS-FX453R

LCD

Color CD changer

controller

Ivory

Amber

40Wx4

CD CHANGER CONTROL

CD-

SOUND

PTY

SSM

PROG

RDS

789101112

/I ATT

MO/FIND

DISP

SEL

KS-FX450R

!CAUTION 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

Location of main parts

Control unit

Main unit

Cassette mechanism

LED & key control board

Main board assembly

Display

Main board assembly

Motor control board Motor control board

Capstan motor unit

Capstan

motor unit Head amp board

Fly wheel

Head amp board

ISO connector

CD changer input jack

(Only for KS-FX450R/KS-FX453R)

Pin jack

Removal of main parts

Removing the front chassis

(See Fig.1)

1. Insert a screwdriver to the joints a on the side of the front

chassis and two joints b on the right side, then detach the

front chassis toward the front side.

Removing the heat sink (See Fig.2 )

1. Remove the three screws A attaching the heat sink on

the left side of the body, and remove the heat sink.

Removing the bottom cover (See Fig.3 )

Removing the front chassis.

Removing the heat sink.

Turn the body upside down.

Insert a screwdriver to the two joints c and two joints d on

both sides of the body and the joint d on the back of the

body, then detach the bottom cover from the body.

Removing the rear panel (See Fig.4 and 5 )

Remoe the front chassis.

Remove the heat sink.

Remove the bottom cover.

[KS-F350 / KS-F353]

Remove the three screws B attaching the rear panel and

one screws C attaching the pine jack on the back of the

body.

4. [KS-FX450 / KS-FX453]

Remove the Fore screws B' attaching the rear panel, one

screw C' attaching the pin jack and one screw D

attaching the C D changer input jack.

Heat sink

Front chassis

Fig.1

Fig. 2

Fig. 3

Fig. 4

[KS-F350 / KS-F353] Fig. 5

[KS-FX450 / KS-FX453]

Bottom cover

CD changer input jack

Removing the main amplifier board assembly

(See Fig.4 and 5)

Removing the Cassette mehanism assembly

(See Fig.6)

Remove the front chassis.

Remove the bottom cover.

Remove the rear pan.

Remove the two screws B attaching the main amplifier

board assembly on the top cover.

Disconnect connector CN901 and CN902 on the main

amplifier board assembly from the cassette mechanism

assembly.

Remove the front chassis.

Remove the bottom cover.

Remove the main amplifier board assembly.

Remove the tore screws F attaching the cassete

mechanism assembly from the top cover.

Removing the control switch board

(See Fig.7 and 8 )

Remove the front panel unit from the main body.

Remove the four screws G attaching the rear cover on

the back of the front panel unit.

Remove the control switch board from the front panel

unit.

Fig.4

Cassete mechanism assembly

Top cover

Fig. 6

Fig. 7 Fig. 8

Control switch board

CN901

Main amplifier board

CN902

(Cassette Mechanism Sections)

Head amplifier board

Direction

switch board

Motor assembly

Cassette hanger

Relay board

Center plate

Cassette holder

FF Lever

REW Lever

Chassis

Main belt

Sub-belt

Reel base assembly

Flywheel

assembly(B)

Flywheel

assembly(F)

Fig. 1 Fig. 2

Fig. 3

To see

Fig.5

Removing the Main Parts of Cassette Mechanism

1. Remove the cassette hanger and FF, REW, EJECT lever etc. , when you need to replace or adjusting head.

2. The main belt can be replaced directly.

3. To change the sub-belt, remove the three screws 7and loosen one screw 8.

Then raise the belt side of the reel base assembly slightly.

Removing the Cassette Hanger

(See Fig.1-5 )

1. From the rear of the unit, bend the

cassette hanger and chassis the five claws

a, boutwards.

2. While pressing the EJECT lever, remove the

cassette hanger.

3. Remove the return ink rod from the center plate

of the cassette hanger.

Cassette hanger

Center plate

Return link

EJECT lever

Chassis

Claw

Note : The reel disk and capstan can now

be replaced.

1-1 Remove the C washer at the top of the reel disk to

remove the reel disk.

caution : Replace with a new C washer after repairing.

1-2 To replace the capstan, remove the E washer in the

pinch-roller section.

Remove the main belt of the flywheel beforehand.

Assembling the Cassette Hanger ( See Fig. 1-5)

1. Assemble the return link.

2. Install the cassette hanger on the chassis.

Note : While pressing the EJECT lever, assemble

in the order shown below.



C Washer

Reel disk

Capstan

E Washer

Cassette hanger

Return link EJECT lever

EJECT L.Spring

EJECT C.Spring

EJECT cam

The convex section should be between

the cassette hanger and EJECT cam .

Fig. 4

Fig. 5

Fig. 6

Removing the FF/REW lever assembly

( See Fig. 6)

1. From the rear of unit, remove the FF/REW lever

assembly retaining the one screw1.

2. From the upper part of the FF/REW lever assembly,

remove the FF/REW lever assembly

retaining the one screw 2.

3. From the front of unit, remove the FF/REW lever

assembly upwards and pull it slightly to the front.

Assembling the FF/REW lever Assembly

1. Assemble the FF/REW lever assembly to the

chassis of rear section c.

2. Assemble the pinch-roller shaft d, change

lever(B) eand return link fto chassis.

FF/REW lever assembly

Fig. 7

Fig. 10

Fig. 9

Fig. 8

Removing the Pinch-Roller assembly ( See Fig. 7)

1. Remove the two E Washers 3retaining the pinch-roller shaft.

2. Remove the P.Arm spring (F) from the chassis.

3. Remove the P.Arm spring (R) from the chassis.

4. Pull out the pinch-roller(F,R) assemblies from the left

and right sides.

Note : The P.arm spring (F) and P.arm spring (R) are different.

Note : The Pinch-roller (F) and Pinch-roller(R)assemblies

are different.

Removing the Playback Head ( See Fig. 7 )

1. Remove the one fixed screw 4retaining the playback head.

2. Remove the C Washer 5to pull the FF roller out .

3. Remove the S. support plate to remove the A.arm springs

(A,B) and playback head.

Note : The A. arm spring (A) and A. arm spring (B) are different.

Removing the Motor Assembly ( See Fig. 8 )

1. Remove the main belt and sub-belt from the back side unit.

2. Remove the two screws 6retaining the motor assembly.

Changing the Sub-Belt ( See Fig. 8 )

1. Remove the main belt from the back side unit..

2. Remove the sub-belt from the motor pulley.

3. Remove the four screws 7, 8retaining

the reel base assembly.

4. Lift up the reel base assembly slightly to

change the belt.

Removing the Reel Base Assembly ( See Fig. 8-10)

1. Remove the selector link (B) from the front unit by turning

the selector link (B) near the pinch-roller as shown

in the figure 9.

3. Remove the four screws 7, 8retaining the reel base

assembly.

4. Remove the reel base assembly carefully.

Note : Service for the reel base assembly is not available.

P. arm spring(F)

P. arm spring(R)

E Washer E Washer

Pinch-roller

shaft Pinch-roller shaft

Pinch-roller (R)

assembly

Pinch-roller (R)

assembly

Pinch-roller (F)

assembly

A.arm

spring(A)

A.arm

spring(B)

Remove the P. arm spring (F)

from the chassis.

S. support plate

Main belt Sub belt

Reel base assembly

Motor assembly

Motor pulley

Selector link (B) Turn the selector link (B)

disengage this one.

Back side view of the reel base assembly

Adjustment method

Test Instruments reqired for adjustment

1. Digital osclloscope(100MHz)

2. Frequency Counter meter

3. Electric voltmeter

4. Wow & flutter meter

5. Test Tapes

VT724 ....................... for DOLBY level measurement

VT739 ............ For playback frequency measurement

VT712 ....For wow flutter & tape speed measurement

VT703 ..................... For head azimuth measurement

6. Torque gauge .................... Cassette type for CTG-N

(mechanism adjustment)

Measuring conditions(Amplifier section)

Power supply voltage .............. DC14.4V (10.5 - 16V)

Load impedance ........... 4  (2Speakers connection)

Line out............................................................ 20k

Standard volume position

Balance and Bass,Treble volume .Fader

:Center(Indication"0")

Loudness,Dolby NR,Sound,Cruise:Off

Volume position is about 2V at speaker output with

following conditions.Playback the test tape VT721.

AM mode 999kHz/62dB,INT/400Hz,30%

modulation signal on recieving.

FM mono mode 97.9MHz/66dB,INT/400Hz,22.5kHz

deviation pilot off mono

FM stereo mode 1kHz,67.5kHz dev. pilot7.5kHz dev.

Output level 0dB(1 V,50  /open terminal)

Frequency Band

FM 87.5-108MHz 50KHz step

Band MW 522-1620KHz 9KHz step

LW 144-279KHz

Arrangement of adjusting & test points

Head section view

Cassette mechanism

(Surface)

Tape speed adjust

Motor assembly

Playback head

Azimuth screw

Head azimuth screw Fixed screw

Height adjusting screw c

Height adjusting screw b

Height adjusting screw a

Playback head

Andere Handbücher für KS-F350R

Dieses Handbuch passt für folgende Modelle

Inhaltsverzeichnis

Andere JVC Autoempfänger Handbücher

Beliebte Autoempfänger Handbücher anderer Marken

Motorola

Motorola VWA63 Bedienungsanleitung

Nextar

Nextar D3201 Bedienungsanleitung

Alpine

Alpine CDE-163BT Bedienungsanleitung

Pioneer

Pioneer DEH-P645R Bedienungsanleitung

Axxera

Axxera XDMA7600 Betriebsanleitung

XM OnyX Bedienungsanleitung

Sound Storm

Sound Storm STM93R Bedienungsanleitung

Soundstream

Soundstream VIR-5000 Bedienungsanleitung

Avson

Avson MKT Platform Bedienungsanleitung

Sony

Sony MEX-1HD - Audio Library System Bedienungsanleitung

Pioneer

Pioneer DVH-P500UB Bedienungsanleitung

Blaupunkt

Blaupunkt SANTIAGO CR 87 Bedienungsanleitung

Sony

Sony CDX-4160 - Cd Receiver Bedienungsanleitung

XFIRE AUDIO

XFIRE AUDIO BMW42S Bedienungsanleitung

VDO

VDO CD 2253 Bedienungsanleitung

Volvo

Volvo 13 84 580 Bedienungsanleitung

ZENEC

ZENEC ZE-160DVD Bedienungsanleitung

Medion

Medion Car Audio Bedienungsanleitung