JVC KSFX-460-R Service manual

KS-FX460R/KS-FX463R

SERVICE MANUAL

CASSETTE RECEIVER

KS-FX460R /KS-FX463R

Area Suffix

EX Central Europe

This model is KS-FX460R/KS-FX463R EX that is added to the preceding model, theKS-FX460R/KS-FX463R E . Therefore the service manual for this model is consisting of Parts list only. For others, please refer to the service manual of KS-FX460R/KS-FX463R E (issue No.49578).

No.49632

Mar. 2001

KS-FX460R/KS-FX463R

Parts list (Packing)

Iten

Parts name

P1 POLY BAG FSPG4002-001

(Q'TY 2)

Parts list (Accessories)

Iten

A 2

A 3

Parts name

INST.BOOK (LANGUAGE) INSTALL.MANUAL (LANGUAGE)

GET0039-002A (SPA,ITA,SWE,FIN) GET0039-005A (SWE,FIN)

E Version

P3-15

Parts number

FSPG4002-001 (Q'TY 1)

P3-15

Parts number

-----------------------

---------------------------

Block No.M3MM

EX Version

Block No.M4MM

EX Version

Q'ty

VICTOR COMPANY OF JAPAN, LIMITED

MOBILE ELECTRONICS DIVISION PERSONAL & MOBILE NETWORK BUSINESS UNIT. 10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan

(No.49632)

200103

KS-FX460R/KS-FX463R

SERVICE MANUAL

CASSETTE RECEIVER

KS-FX460R / KS-FX463R

Contents

Safety precaution Disassembly method Adjustment method Description of major ICs

Difference point

LCD

LED (without

power button)

KS-FX460R

GREEN GREEN

Area Suffix

E Continental Europe

KS-FX463R

AMBER AMBER

1-2 1-3 1-13 1-17~22

No.49578

Dec. 2000

KS-FX460R/KS-FX463R

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.

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Disassembly method

Removing the front panel assembly

(See Fig.1)

Press the eject button in the lower right part of the front panel. Remove the front panel assembly from the body.

Removing the front chassis assembly

(See Fig.2 and 3)

KS-FX460R/KS-FX463R

Front panel assembly

Eject button

Fig.1

Tab a

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

Release the four joint tabs a on both sides of the front chassis assembly and remove the front chassis assembly toward the front.

Tab a

Front chassis assembly

Heat sink

Fig.2

Tab a

Front chassis assembly

Fig.3

1-3

KS-FX460R/KS-FX463R

Removing the heat sink (See Fig.4)

Remove the three screws A on the left side of the body.

Removing the bottom cover

(See Fig.5 and 6)

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 five joints b with the bottom cover and the body using a screwdriver.

Joints b

Joint b

Rear panel

Heat sink

Fig.4

Bottom cover

Joints b

Fig.5

Bottom cover

Joints b

Joint b

Rear panel

Fig.6

1-4

KS-FX460R/KS-FX463R

Removing the main board

(See Fig.7 and 8)

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 B, the two screws C and the two screws D attaching the rear bracket on the back of the body. Remove the rear bracket.

Remove the two screws E attaching the main board on the bottom of the body. Disconnect connector CN901 and CN902 on the main board in the direction of the arrow.

Rear bracket

CN902

Fig.7

Main board

Removing the cassette mechanism section

(See Fig.9)

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

Remove the four screws F attaching the cassette mechanism section on the back of the top chassis.

CN901

Fig.8

Cassette mechanism section

Fig.9

Top chassis

1-5

KS-FX460R/KS-FX463R

Removing the head amplifier board

(See Fig.10)

Prior to performing the following procedure, remove the cassette mechanism section.

Disconnect the wire from connector CJ901 on the head amplifier board.

Remove the screw G and slide the head amplifier board in the direction of the arrow to unjoint the two joints c with the mechanism bracket.

Removing the motor board (See Fig.11)

Prior to performing the following procedure, remove the cassette mechanism section.

Disconnect the wire from connector CJ902 on the motor board.

Head amplifier board

CJ901

Joint c

Fig.10

Remove the screw H and slide the motor board in the direction of the arrow to unjoint the joint d with the mechanism bracket.

Removing the cassette mechanism assembly

(See Fig.12)

Prior to performing the following procedure, remove the cassette mechanism section, the head amplifier board and the motor board.

Remove the four screws I on the bottom of the cassette mechanism section.

Joint d

Motor board

CJ902

Mechanism bracket

Fig.11

1-6

Fig.12

KS-FX460R/KS-FX463R

Removing the control switch board

(See Fig.13 to 15)

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

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

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

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

Front panel

Rear cover

Fig.13

Joints e

Rear cover

Front panel

Joints e

Fig.14

Cntrol switch board

Fig.15

1-7

KS-FX460R/KS-FX463R

Prior to performing the following procedures, remove the head amplifier board, the relay board and the mechanism bracket.

Removing the direction switch board

(See Fig.1)

Unsolder the three wires a on the direction switch board.

Remove the one screw A attaching the direction switch board.

Removing the FF / REW lever assembly

(See Fig.1)

Remove the screw B attaching the FF / REW lever assembly on the back of the cassette mechanism assembly.

Remove the screw C on the upper side of the FF / REW lever assembly.

Lift and pull forward the FF / REW lever assembly to disengage the joints b, c, d and e.

Joint e

Joint d

FF / REW lever assembly

Solding a

Direction switch board

Fig.1

Joint c

Joint b

Reattaching the FF / REW lever assembly

(See Fig.1)

Reattach the FF / REW lever assembly to the joint c on the back of the chassis.

Reattach the pinch-roller shaft e, the change lever d and the return link e to the chassis.

1-8

KS-FX460R/KS-FX463R

Pinch-roller (R) assembly

A arm spring (b)

Shaft

Remove the P arm spring (r) from the chassis.

P arm spring (r)

S support plate

C washer

FF roller

Removing the playback head (See Fig.2)

Prior to performing the following procedure, remove the direction switch board and the FF / REW lever assembly.

Pinch-roller (F) assembly

A arm spring (a)

Shaft

Playback head

Remove the P arm spring (f) from the chassis.

P arm spring (f)

Fig.2

Remove the screw D attaching the playback head.

Remove the C washer and pull out the FF roller.

Remove the S support plate, the A arm spring (a) and (b), the playback head.

ATTENTION:

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

Removing the pinch-roller (R) and (F) assembly (See Fig.2)

Prior to performing the following procedure, remove the direction switch board and the FF / REW lever assembly.

Remove the P arm spring (f) in the pinch-roller (F) assembly from the chassis.

Remove the P arm spring (r) in the pinch-roller (R) assembly from the chassis.

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.

1-9

KS-FX460R/KS-FX463R

Removing the cassette hanger / cassette holder (See Fig.3)

Prior to performing the following procedure, remove the FF / REW lever assembly.

From the rear of the unit, bend the two tabs f outwards and disengage the two joints g in the direction of the arrow.

Push the eject lever and remove the cassette holder from the playback head. Disengage the two joints h of the cassette hanger / cassette holder and the eject lever in the direction of the arrow.

Lift the cassette hanger / cassette holder and disengage the joint i of the return link and the eject lever.

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 holder.

Joint g

Cassette holder

Return link

Joint i

Cassette hanger

Eject lever

Joint h

Chassis

Joint h

Tab f

Joint g

Fig.3

C washer

Remove the C washer and pull out reel disc assembly.

ATTENTION:

Replace with a new C washer when reattaching.

Removing the motor assembly

(See Fig.5)

Unsolder the two wires j on the motor assembly.

ATTENTION:

Turn over the cassette mechanism assembly and remove the main belt and the sub-belt from the motor pulley.

ATTENTION:

To replace the sub-belt, remove the main belt and the sub-belt from the motor pulley. Then remove the three screws E and one screw F. Replace with a new sub-belt while lifting the reel base assembly slightly.

The main belt can now be removed.

C washer

Flywheel (BF)

Fig.4

Main-belt

Reel disc assembly

Motor assembly

Sub-belt

Motor pulley

Solding j

Remove the two screws G attaching the motor assembly.

1-10

Flywheel (BR)

Reel base assembly

Fig.5

Removing the Flywheel (BF) and (BR) assembly (See Fig.4 and 5)

Prior to performing the following procedure, remove the cassette hanger / cassette holder.

From the upper side of the cassette mechanism assembly, remove the C washer from each shaft of the flywheel (BF) and (BR).

Turn over the cassette mechanism assembly and remove the main belt. Pull out the flywheel (BF) and (BR) downward respectively.

Removing the reel base assembly

(See Fig.5 and 6)

Raise the part k of the reel base assembly slightly and remove the selector link (B) on the front side of the cassette mechanism assembly by turning it as shown in Fig.10.

C washer

Flywheel (BF)

Fig.4

Main-belt

KS-FX460R/KS-FX463R

Reel disc assembly

Motor assembly

Sub-belt

Motor pulley

Remove the three screws E and the one screw F on the underside of the cassette mechanism assembly.

ATTENTION:

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

Inside of the reel base assembly

Flywheel (BR)

Reel base assembly

Fig.5

Pinch-roller (R) assembly

Solding j

Selector link (B).

Turn the selector link (B).

Fig.6Fig.7

1-11

KS-FX460R/KS-FX463R

Removing the mute switch board

(See Fig.8)

Unsolder the two wires l on the mute switch board on the back of the cassette mechanism assembly.

Remove the screw H attaching the mute switch board.

Cassette mechanism assembly

Solding l

Fig.8

Rower switch

Mute

switch board

Motor assembly

Removing the power switch (See Fig.9)

Prior to performing the following procedure, remove the motor assembly.

Unsolder the two wires m on the power switch on the side of the cassette mechanism assembly.

Remove the screw I attaching the power switch.

Solding m

Cassette mechanism assembly

Rower switch

Fig.9

1-12

Adjustment method

KS-FX460R/KS-FX463R

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)

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