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13

1

 Release

3

 Cassette holder (R)

     assembly

4

 Cassette holder (L)

     assembly

Portion 

A

Portion 

A

5

 Tension spring

7

 Two screws

     (BVTP2.6x8)

8

 Three screws

     (BVTP2.6x8)

9

 Tape mechanism

6

 Tension spring

2

 Release

Portion 

B

Portion 

B

4

 

Knob (Jog)

5

 

Knob (Vol)

9

 

Three screws

     (BVTP2.6x8)

3

 

CD SW board

0

 

Six screws

     (BVTP2.6x8)

!¡

 

Four screws

     (BVTP2.6x8)

!™

 

Panel board

2

 

Three screws

     (BVTP2.6x8)

8

 

Flat type wire

     (CN601)

1

 

Three screws

     (BVTP2.6x8)

7

 

Nut

6

 

Nut

14

(Perform after removing the front panel.)

Note:When installing the Disc tray, pull around the flat type wire to
         pass through the claw 

A

 and claw 

B

, as shown in the figure.

Claw 

B

Claw 

A

1

 

Turn the cam the

     direction of arrow.

2

 

Pull-out the disc tray.

5

 

Remove the disc tray.

4

 

Two claws

3

 

Flat type wire  (8 core)

15

1. Clean the following parts with a denatured alcohol-moistened

swab:

record/playback heads

pinch rollers

erase head

rubber belts

capstan

idlers

2. Demagnetize the record/playback head with a head demagne-

tizer.

3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound to the

parts adjusted.

5. The adjustments should be performed with the rated power sup-

ply voltage unless otherwise noted.

31 to 71 g • cm

(0.43 – 0.98 oz • inch)

2 to 6 g • cm

(0.02 – 0.08 oz • inch)

31 to 71 g • cm

(0.43 – 0.98 oz • inch)

2 to 6 g • cm

(0.02 – 0.08 oz • inch)

71 to 143 g • cm

(0.98 – 1.99 oz • inch)

100 g or more

(3.53 oz or more)

100 g or more

(3.53 oz or more)

Note: Perform this adjustments for both decks.

Procedure:
1. Mode : Playback

Signal

Used for

Tape

Mode

FWD

Torque meter

CQ-102C

Meter reading

FWD
back tension

REV

REV
back tension

FF/REW

FWD tension

REV tension

CQ-102C

CQ-102RC

CQ-102RC

CQ-201B

CQ-403A

CQ-403R

1. Demagnetize the record/playback head with a head damagnetizer.
2. Do not use a magnetized screwdriver for the adjustments.
3. After the adjustments, apply suitable locking compound to the

parts adjusted.

4. The adjustments should be performed with the rated power sup-

ply voltage unless otherwise noted.

5. The adjustments should be performed in the order given in this

service manual. (As a general rule, playback circuit adjustment
should be completed before performing recording circuit adjust-
ment.)

6. The adjustments should be performed for both L-CH and R-CH.
7. Switches and controls should be set as follows unless otherwise

specified.

P-4-A100

WS-48B

P-4-L300

10 kHz, –10 dB

3 kHz, 0 dB

315 Hz, 0 dB

Azimuth Adjustment

Tape Speed Adjustment

Level Adjustment

2. Turn the adjustment screw and check output peaks. If the peaks

do not match for L-CH and R-CH, turn the adjustment screw so
that outputs match within 1 dB of peak.

test tape
P-4-A100
(10kHz, –10dB)

MD OUT
(J101)

level meter

set

+

–

L-CH
peak

R-CH
peak

screw
position

output
level

within
1 dB

L-CH
peak

R-CH
peak

screw
position

within 1dB

16

4. After the adjustments, apply suitable locking compound to the

parts adjusted.

Adjustment Location: Playback Head (Deck A)

Record/Playback/Erase Head (Deck B)

3. Mode: Playback

Note: Set the test mode using the following method and begin tape

speed adjustment.
In the test mode, the speed will switch to double speed or
normal speed each time the  HI DUB  button is pressed.

Procedure:
With the power turned ON, press the 

p  button,  ENTER/NEXT

button, and  DISC 3  button simultaneously.
(The “CD TYPE INDICATOR” on the fluorescent display tube will
blink while in the test mode.)
To exit the test mode, press the  

1/u  button.

1. Insert the WS-48B into deck B.
2. Press the  

^  button of deck B.

3. Press the  HI DUB  button and play the tape at double speed.
4. Adjust RV1001 of the LEAF SW board so that the reading of

the frequency counter becomes 6000 ± 180 Hz.

5. Press the  HI DUB  button and play the tape at normal speed.
6. Adjust RV1002 of the LEAF SW board so that the reading of

the frequency counter becomes 3000 ± 90 Hz.

Adjustment Location: LEAF SW board

W.RMS (JIS) less than 0.3%
(test tape: WS-48B)

Procedure:
Mode: Playback

Deck A is RV311 (L-CH) and RV411 (R-CH), deck B is RV301
(L-CH) and RV401 (R-CH)
so that adjustment within the following adjustment level.

Adjustment level:
J101 playback level: 301.5 to 338.3 mV (–8.2 to –7.2 dB)
level difference between the channels: within ± 0.5 dB
Adjustment Location: AUDIO board

test tape
P-4-A100
(10kHz, –10dB)

oscilloscope

set

Waveform of oscilloscope

in phase

45

°

90

°

135

°

180

°

good

wrong

MD OUT
(J101)

test tape 
P-4-L300
(315Hz, 0dB)

level meter

set

MD OUT
(J101)

RV1002

RV1001

RV1002(Normal Speed)

RV1001(High Speed)

Reverse

Foward