Jvc Ks-f150m User manual

SERVICE MANUAL

2004/5

CASSETTE RECEIVER

MA09820045

KS-F150M

TABLE OF CONTENTS

1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15

Area suffix

UN --------------------------Asean

UN2 ------------------------Asean

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TEL 13942296513 QQ 376315150 892498299

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1-2 (No.MA098)

SECTION 1

PRECAUTION

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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(No.MA098)1-3

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

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1-4 (No.MA098)

SECTION 3

DISASSEMBLY

3.1 Main body section

3.1.1 Detaching the Front panel unit

(see Fig.1)

(1) Push the release button in the direction of arrow to detach

the panel unit.

Fig.1

3.1.2 Removing the Front chassis

(See Fig.2)

(1) Disengage the four tabs ain the right and left sides od unit

and pull the front chassis forward to remove it.

3.1.3 Removing the Bottom cover

(See Fig.2 to 4)

(1) Removing the front chassis.

(2) Turn the unit up side down.

(3) Insert the six engagements b, c, d, e, fto the screwdriver.

(4) Turn the screwdriver and remove the bottom cover.

Fig.2

Fig.3

Fig.4

Front panel unit

Push the release button

a

Top chassis

Front chassis

Bottom cover

b

c

d

Front chassis

ae

e

a

fBottom cover

Rear panel

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(No.MA098)1-5

3.1.4 Removing the Heat sink

(See Fig.5)

(1) Removing the front chassis.

(2) Removing the bottom cover.

(3) Remove the three screws Aand A' retaining the heat sink.

3.1.5 Removing the Main board

(See Fig.5 to 7)

(1) Removing the front chassis.

(2) Removing the bottom cover.

(3) Removing the heat sink. (Attach the heat sink with a screw

1' on operating checks.)

(4) Remove the two screws Bretaining the main board assem-

bly.

(5) Remove the two screws Cretaining the rear panel.

(6) Separate the main board assembly and cassette mecha-

nism assembly.

(7) Take out the main board assembly.

Fig.5

Fig.6

Fig.7

Heat sink

AA

A`

Main board assembly

B

Rear panel CC

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1-6 (No.MA098)

3.1.6 Removing the Cassette mechanism assembly

(See Fig.8)

(1) Removing the front chassis.

(2) Removing the bottom cover.

(3) Removing the heat sink.

(4) Removing the main board assembly.

(5) Remove the four screws Dretaining the cassette mecha-

nism.

(6) Separate the top chassis and cassette mechanism.

Fig.8

3.1.7 Removing the Front board

(See Fig.9 to 11)

(1) Detaching the front panel assembly.

(2) Turn the front panel back side down.

(3) Remove the four screws Eretaining the front cover.

(4) Open the front cover gradually by disengaging the three

engagements gwhile pushing the top of the front cover in

the arrow "A" direction, then disengage the three engage-

ments hon the both sides.

(5) Place the front panel unit front side down.

(6) Disengage the three engagements ion the bottom to sep-

arate the front cover from the front panel. (Be careful not to

lose the button spring)

Fig.9

Fig.10

Fig.11

Cassette mechanism

Front side

Top chassis

D

DD

Front cover

EE

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A

Front panel

Front cover

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Opration switch board

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(No.MA098)1-7

3.2 Cassette mechanism assembly

• Prior to performing the following procedures, remove the head

amplifier board, the relay board and the mechanism bracket.

3.2.1 Removing the direction switch board

(See Fig.1)

(1) Unsolder the three wires aon the direction switch board.

(2) Remove the one screw Aattaching the direction switch

board.

3.2.2 Removing the FF / REW lever assembly

(See Fig.1)

(1) Remove the screw Battaching the FF / REW lever assem-

bly on the back of the cassette mechanism assembly.

(2) Remove the screw Con the upper side of the FF / REW

lever assembly.

(3) Lift and pull forward the FF / REW lever assembly to disen-

gage the joints b, c, dand e.

3.2.3 Reattaching the FF / REW lever assembly

(See Fig.1)

(1) Reattach the FF / REW lever assembly to the joint con the

back of the chassis.

(2) Reattach the pinch-roller shaft e, the change lever dand

the return link eto the chassis.

Fig.1

3.2.4 Removing the playback head

(See Fig.2)

• Prior to performing the following procedure, remove the direc-

tion switch board and the FF / REW lever assembly.

(1) Remove the screw Dattaching the playback head.

(2) Remove the Cwasher and pull out the FF roller.

(3) Remove the Ssupport plate, the A arm spring (a) and (b),

the playback head.

ATTENTION:

The A arm spring (a) differs from the A arm spring (b).

3.2.5 Removing the pinch-roller (R) and (F) assembly

(See Fig.2)

• Prior to performing the following procedure, remove the direc-

tion switch board and the FF / REW lever assembly.

(1) Remove the P arm spring (f) in the pinch-roller (F) assem-

bly from the chassis.

(2) Remove the P arm spring (r) in the pinch-roller (R) assem-

bly from the chassis.

(3) Draw out the pinch roller (F) and (R) assembly from the

shaft.

ATTENTION:

The P arm spring (f) differs from the P arm spring (r).

ATTENTION:

The pinch roller (F) assembly differs from the pinch roller (R)

assembly.

Fig.2

C

FF / REW lever assembly

Joint c

Joint b

B

A

Direction switch board

Joint d

Joint e

Soldering a

A arm spring (b) A arm spring (a)

Pinch-roller (R) assembly Pinch-roller (F) assembly

Shaft Shaft

S support plate

D

C washer

P arm spring (f)

P arm spring (r)

Remove the P arm spring (f)

from the chassis.

Remove the P arm spring (r)

from the chassis.

Playback head

FF roller

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1-8 (No.MA098)

3.2.6 Removing the cassette hanger / cassette holder

(See Fig.3)

• Prior to performing the following procedure, remove the FF /

REW lever assembly.

(1) From the rear of the unit, bend the two tabs foutwards and

disengage the two joints gin the direction of the arrow.

(2) Push the eject lever and remove the cassette holder from

the playback head. Disengage the two joints hof the cas-

sette hanger / cassette holder and the eject lever in the di-

rection of the arrow.

(3) Lift the cassette hanger / cassette holder and disengage

the joint i of the return link and the eject lever.

Fig.3

3.2.7 Removing the reel disc assembly

(See Fig.4)

• Prior to performing the following procedure, remove the FF /

REW lever assembly and the cassette hanger / cassette hold-

er.

(1) Remove the C washer and pull out reel disc assembly.

ATTENTION:

Replace with a new C washer when reattaching.

Fig.4

3.2.8 Removing the motor assembly

(See Fig.5)

(1) Unsolder the two wires jon the motor assembly.

(2) Turn over the cassette mechanism assembly and remove

the main belt and the sub-belt from the motor pulley.

ATTENTION:

The main belt can now be removed.

(3) Remove the two screws Gattaching the motor assembly.

Fig.5

Cassette holder

Cassette hanger

Return link

Joint i

Eject lever

Joint h

Joint g

Joint g Tab f

Tab f

Chassis

Reel disc assembly

C washer

Flywheel (BF)

Flywheel (BR)

E

F

G

Main-belt

Reel base assembly

Sub-belt

Motor assembly

Motor pulley

Soldering j

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TEL 13942296513 QQ 376315150 892498299

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(No.MA098)1-9

3.2.9 Removing the Flywheel (BF) and (BR) assembly

(See Fig.4 and 5)

• Prior to performing the following procedure, remove the cas-

sette hanger / cassette holder.

(1) From the upper side of the cassette mechanism assembly,

remove the C washer from each shaft of the flywheel (BF)

and (BR).

(2) Turn over the cassette mechanism assembly and remove

the main belt. Pull out the flywheel (BF) and (BR) down-

ward respectively.

Fig.4

Fig.5

3.2.10 Removing the reel base assembly

(See Fig.5 and 6)

(1) Raise the part kof the reel base assembly slightly and re-

move the selector link (B) on the front side of the cassette

mechanism assembly by turning it as shown in Fig.6.

(2) Remove the three screws Eand the one screw Fon the

underside of the cassette mechanism assembly.

ATTENTION:

The reel base assembly is not repairable. Handle with care.

Fig.6

Fig.7

Reel disc assembly

C washer

Flywheel (BF)

Flywheel (BR)

E

F

G

Main-belt

Reel base assembly

Sub-belt

Motor assembly

Motor pulley

Soldering j

Selector link (B).

Pinch-roller (R) assembly

Turn the selector link (B).

k

Inside of the reel base assembly

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TEL 13942296513 QQ 376315150 892498299

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1-10 (No.MA098)

3.2.11 Removing the mute switch board (See Fig.8)

(1) Unsolder the two wires lon the mute switch board on the

back of the cassette mechanism assembly.

(2) Remove the screw Hattaching the mute switch board.

Fig.8

3.2.12 Removing the power switch

(See Fig.9)

• Prior to performing the following procedure, remove the motor

assembly.

(1) Unsolder the two wires mon the power switch on the side

of the cassette mechanism assembly.

(2) Remove the screw Iattaching the power switch.

Fig.9

Cassette mechanism assembly

Soldering l

HMute switch board

Rower switch

Motor assembly

Soldering m

IPower switch

Cassette mechanism assembly

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(No.MA098)1-11

SECTION 4

ADJUSTMENT

4.1 Adjustment method

Test instruments required for adjustment

(1) Digital oscilloscope (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)

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.

Measuring conditions (Amplifier section)

Frequency Band

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

modulation signal on receiving.

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

deviation pilot off mono

FM stereo mode 1kHz, 67.5kHz dev. pilot 7.5kHz dev.

Output level 0dB (1µV,50Ω/open terminal)

Power supply voltage: DC14.4V (10.5V to 16V)

Load impedance: 4Ω(2Speakers connection)

Line out: 20kΩ

Band FM 87.5-108MHz 50KHz step

AM 531-1602KHz 9KHz step

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TEL 13942296513 QQ 376315150 892498299

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1-12 (No.MA098)

Information for using a car audio service jig

(1) For 1995 and 1996 , we're advancing efforts to make our extension cords common for all car audio products.

Please use this type of extension cord as follows.

(2) As a U-shape type top cover is employed, this type of extension cord is needed to check operation of the mechanism assembly

after disassembly.

(3) Extension cord : EXTKSRT002-6P ( 6 pin extension cord ) For connection between mechanism assembly and main board

assembly.

Check for mechanism driving section such as motor ,etc..

Disassembly method

(1) Remove the bottom cover.

(2) Remove the front panel assembly.

(3) Remove the top cover.

(4) Install the front panel.

(5) Confirm that current is being carried by connecting an extension cord jig.

Note :

Available to connect to the CN701 connector when installing the front panel.

Extension cord

: EXTKSRT002-6P

EXTKSRT002-6P

Front panel assembly

Main board

Cassette mechanism

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TEL 13942296513 QQ 376315150 892498299

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(No.MA098)1-13

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

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TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

1-14 (No.MA098)

Mechanism adjustment section

Item Adjusting & confirmation methods Adjust Std. Value

"Head Height Adjustment"

Note

Adjust the azimuth directly. When you adjust the height us-

ing a mirror tape, remove the cassette housing from the

mechanism chassis.

After installing the cassette housing, perform the azimuth

adjustment.

1.load the mirror tape ( SCC-1659 ). Adjust with height

adjustmentscrew (a) and azimuth adjustment screw (b) so

that line "A" of the mirror tape runs in the center between

Lch and Rch in the reverse play mode.

2.After switching from REV to FWD then to REV, check that

the head position set in procedure "1" is not changed.

*If the position has shifted, adjust again and check.

3.Adjust the azimuth screw (b) so that line "B" of the mirror

tape runs in the center between Lch and Rch in the forward

play mode.

"Head Azimuth Adjustment"

1.Load the test tape ( VT724: 1kHz ) and play it back in the

reverse play mode. set the Rch output level to maximum.

2.Load the test tape ( VT703: 10kHz ) and play it back in the

forward play mode. Adjust the Rch and Lch output levels

tomaximum, with azimuth adjustment screw (b).

In this case, the phase difference should be within 45 .

3.Engage the reverse mode and adjust the output level to

maximum, with azimuth adjustment screw (c).

*The phase difference should be 45_Kor more.

4.When switching between forward and reverse modes, the

difference between channels should be within 3dB.

*Between FWD Lch and Rch, REV Lch and Rch.

5.When the test tape ( VT721 : 315Hz ) is played back, the

level difference between channels should be within 1.5dB.

1.Check to see if the reading of the frequency counter & Wow

flutter meter is within 2940-3090 Hz( FWD/REV ), and less

than 0.35% ( JIS RMS ).

2.In case of out of specification, adjust the motor with a built-

in volume resistor.

1.Play the test tape ( VT724 : 1kHz ) back and set the volume

position at 2V.

2.Play the test tape ( VT739 )back and confirm 0 3dB at1kHz/

+

-

8kHz and -4+2dB at 1kHz/125Hz.

3.When 8kHz is out of specification, it will be necessary to

read adjust the azimuth.

Head shield

The head is at low position

during FWD.

The head is at height position

during REV.

A Line

B Line

Phase

screw (c) screw (a)

screw (b)

Head azimuth

screw Fixed screw

045

Built-in

volume resistor

Tape Speed

2940-3090Hz

Wow&Flutter

Less than

0.35%

(JIS RMS)

Speaker out

1kHz/8kHz

: 0dB_}3dB,

125Hz/1kHz

: -4dB+2dB,

1.Head azimuth

2.Tape Speed

and

Wow & Flutter

3.Playback

Frequency

response

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TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

(No.MA098)1-15

SECTION 5

TROUBLESHOOTING

5.1 16 PIN CORD DIAGRAM

8

7

6

5

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2

1

GY

VI

GN

WH

BL/WH

NC

RD

BK

16

15

14

13

12

11

10

9

YL

GY/BK

VI/BK

GN/BK

WH/BK

NC

Black

RD

BK

Red

BL

Blue

WH

White

GN Green

VI Violet

GY Gray

Yellow

RR

FR

FL

RL

REMOTE

ACC

GND

MEMORY

Rear Right

Front Right

Front Left

Rear Left

Remote out

ACC Line

Ground

Memory Backup Battery +

16 YL MEMORY

8 BK GND

7 RD ACC

5 BL/WH REMOTE

4 WH FL+

12 WH/BK FL-

3 GN RL+

11 GN/BK RL-

2 VI RR+

10 VI/BK RR-

1 GY FR+

9 GY/BK FR-

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TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

(No.MA098)

AV & MULTIMEDIA COMPANY CAR ELECTRONICS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan

Victor Company of Japan, Limited

WPC

Printed in Japan

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TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

SCHEMATIC DIAGRAMS

CASSETTE RECEIVER

No.MA098SCH

2004/5

KS-F150M

Area suffix

UN --------------------------Asean

UN2 ------------------------Asean

Contents

Block diagrams

Standard schematic diagrams

Printed circuit boards

2-1

2-3

2-9 to 12

CD-ROM No.SML200405

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TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

!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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TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

2-1

Block diagrams

(UN2 version)

MAIN

MOTOR

MUTE SW

RADIO/TAPE SW

TU.LCH

TU.RCH

LRO

RRO

LFO

RFO

LRO+,LRO-

RRO+,RRO-

KEY0 to KEY2

F/R

S8 to S52

COM1 to COM3

TAPE.L

TAPE.R

Lch

Rch F/R

L.CH

R.CH

J1

FM

REAR

LINE OUT

LCD & Key control section

Head amplifier section

Cassette mechanism

control section

AM

PROG.SW.

ANT

IC981

POWER AMP

IC931

E.VOL

IC901

HEAD AMP

TO

SPEAKER

CONNECTOR

LCD1

IC651

LCD DRIVER

KEY

S601 to S620

DATA

CLOCK

CE

IC701

MICON

TU1

AM/FM TUNER PACK

MONO, SD/ST,EQ

S.METER, FM.OSC

IFREQ,BAND, IF.C

SDA

ACL

TAPEIN

PROG

Main amplifier section

CP721

Relay section

CP722

CN721 CP981 CJ921

LFO+,LFO-

RFO+,RFO-

LRO

RRO

CN901

CP901

CJ901

HEAD

CJ701

CP701

LCD.SO

LCD.SCK

LCD.CE

KEY0 to KEY2

IC781

REG.

POWER CNT

5V,9V

L-CH

R-CH

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TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

2-2

(UN version)

MAIN

MOTOR

MUTE SW

RADIO/TAPE SW

TU.LCH

TU.RCH

LRO

RRO

LFO

RFO

LRO+,LRO-

RRO+,RRO-

KEY0 to KEY2

F/R

S8 to S52

COM1 to COM3

TAPE.L

TAPE.R

Lch

Rch F/R

L.CH

R.CH

J1

FM

REAR

LINE OUT

LCD & Key control section

Head amplifier section

Cassette mechanism

control section

AM

PROG.SW.

ANT

IC981

POWER AMP

IC931

E.VOL

IC901

HEAD AMP

TO

SPEAKER

CONNECTOR

LCD1

IC651

LCD DRIVER

KEY

S601 to S620

DATA

CLOCK

CE

IC701

MICON

TU1

AM/FM TUNER PACK

MONO, SD/ST,EQ

S.METER, FM.OSC

IFREQ,BAND, IF.C

SDA

ACL

TAPEIN

PROG

Main amplifier section

CP721

Relay section

CP722

CN721 CP981 CJ921

LFO+,LFO-

RFO+,RFO-

LRO

RRO

CN901

CP901

CJ901

HEAD

CJ701

CP701

LCD.SO

LCD.SCK

LCD.CE

KEY0 to KEY2

IC781

REG.

POWER CNT

5V,9V

L-CH

R-CH

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TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

JVC KS-F150M User manual

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