JVC KSF-360-R, KSF-363-R Service manual

KS-F363R/KS-F360R

SERVICE MANUAL

CASSETTE RECEIVER

KS-F363R/KS-F360R

Contents

KS-F363R

KS-F360R

Different pont Illumination KS-F363R Amber KS-F360R Green

KS-F363R

KS-F360R

Area Suffix

EEXContinental Europe

Central Europe

Safety precaution Disassembly method Adjustment method Description of major ICs

1- 2 1- 3 1-12 1-16~22

No.49686

Feb. 2002

KS-F363R/KS-F360R

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

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-F363R/KS-F360R

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-F363R/KS-F360R

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.

Joint b

Joints b

Heat sink

Fig.4

Rear panel

Fig.5

Bottom cover

Joints b

Bottom cover

Joints b

Joint b

Rear panel

Fig.6

1-4

KS-F363R/KS-F360R

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 screw C and the two screws D attaching the rear bracket on the back of the body. Remove the rear panel.

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

CN902

Rear panel

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.

Fig.8

Cassette mechanism section

Fig.9

CN901

Top chassis

1-5

KS-F363R/KS-F360R

Removing the control switch board

(See Fig.10 to 12)

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

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

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

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

G G

Front panel

Rear cover

Fig.10

Joints c

Rear cover

Front panel

Joints c

Fig.11

Control switch board

Fig.12

1-6

KS-F363R/KS-F360R

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

Soldering 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.

1-7

KS-F363R/KS-F360R

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.

1-8

KS-F363R/KS-F360R

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

Soldering j

Remove the two screws G attaching the motor assembly.

Flywheel (BR)

Reel base assembly

Fig.5

1-9

KS-F363R/KS-F360R

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

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

Soldering j

1-10

Selector link (B).

Turn the selector link (B).

Fig.6Fig.7

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

Soldering l

Fig.8

KS-F363R/KS-F360R

Rower switch

Motor assembly

Mute

switch board

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.

Soldering m

Cassette mechanism assembly

Power switch

Fig.9

1-11

KS-F363R/KS-F360R

Adjustment method

Test instruments reqired for adjustment

1. Digital oscilloscoe(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.

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

FM mono mode

FM stereo mode 1kHz,67.5kHz dev.pilot 7.5kHz dev Output level 0dB(1 V,50 /open terminal)

Measuring conditions(Amplifier section)

Power supply voltage.............. DC14.4V(11V - 16V allowance)

Load impedance............ 4 (4 to 8 allowance)

Line out level/Impedance..............1.0V/20k load (250 nWb/m)

modulation signal on recieving.

97.9MHz/66dB,INT/400Hz,22.5kHz deviation pilot off mono

Frequenc

Frequency band

FM: 87.5 MHz to 108.0 MHz

Band

AM : 522 kHz to 1620 kHz(MW) 144 kHz to 279 kHz(LW)

1-12

KS-F363R/KS-F360R

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 methodl

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.

Cassette mechanism

EXTKSRT002-6P

Extension cord : EXTKSRT002-6P

Main board

Front panel assembly

1-13

KS-F363R/KS-F360R

Arrangement of adjusting & test points

Cassette mechanism (Surface)

Motor assembly

Tape speed adjust

Playback head

Head section view

Head azimuth screw

Playback head

Azimuth screw

Fixed screw

1-14

Height adjusting screw

+ 30 hidden pages