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— 9 —

1

 Flat type wire

    (17core, CNS102)

4

 Connector

    (CN113)

2

 Flat type wire

    (17core, CNS104)

5

 Two screws

    (BVTP3x10)

6

 Lead (with connector)

7

 Connector (CNP105)

Catcher

8

 Front panel 

    (Remove the catcher)

3

 Flat type wire

    (15core, CNS101)

A

1

 Three screws

    (BVTP2.6 

×

 8)

2

 Two screws

    (BVTP2.6 

×

 8)

3

 TC mechanism deck

4

 Two springs

C

D

D

C

5

 Remove the Cassette holder A

    and Cassette holder B.
    (Remove 

C

 first, and remove 

D

.)

6

 Eject button 

A

7

 Eject button 

B

Note for installation
Set the Spring to be at the position 
in the figure.

B

(Push out in the direction
 of the arrow 

A

.)

(Push out in the direction
 of the arrow 

B

.)

— 10 —

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)

— 11 —

To adjust the unit, operate the unit by itself using the conduction jig
(PFJ-1).

For details on switching functions and fast forwarding the unit, etc.
when operating it by itself, refer to “Connection and Operations of
the Unit by Itself” on page 5 of Servicing Notes.

• Turning on the power
When operating the unit by itself:
1.

After turning ON the power of the conduction tool (PFJ-1),
press the  π (TAPE A)  button,  π (TAPE B)  button, and  ·
(TAPE B)  button together in this order.

Inputting/outputting audio signals:
Use the jack of the power supply jig (PFJ-1).

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
supply 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
adjustment.)

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.

Note: Perform this adjustments for both decks.

Procedure:
1.

Mode : Playback

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
demagnetizer.

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
supply voltage unless otherwise noted.

P-4-A100

WS-48B

P-4-L300

Tape

Signal

Used for

10 kHz, –10 dB

3 kHz, 0 dB

315 Hz, 0 dB

Azimuth Adjustment

Tape Speed Adjustment

Level Adjustment

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)

Mode

FWD

FWD
back tension

REV

REV
back tension

FF/REW

FWD tension

REV tension

Torque meter

CQ-102C

CQ-102C

CQ-102RC

CQ-102RC

CQ-201B

CQ-403A

CQ-403R

Meter reading

PFJ-1

Output point

Input point

set

test tape

P-4-A100

(10kHz, -10dB)

PFJ-1

level meter

output point

— 12 —

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.

3.

Mode: Playback

4.

After the adjustments, apply suitable locking compound to the
parts adjusted.

Adjustment Location: Playback Head (Deck A)

Record/Playback/Erase Head (Deck B)

L-CH
peak

R-CH
peak

screw
position

output
level

within
1 dB

L-CH
peak

R-CH
peak

screw
position

within 1dB

Waveform of oscilloscope

in phase

45

°

90

°

135

°

180

°

good

wrong

set

PFJ-1

oscilloscope

test tape

P-4-A100

(10kHz, -10dB)

output point

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:
Press the  p (CD)  button while pressing the  DIRECTION MODE
button.

1.

Insert the WS-48B into deck B, while pressing the  p (CD)
button, press the  ª (TAPE A)  button, set the function to
“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:
Output point from PFJ-1 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

Foward

Reverse

set

test tape

P-4-L300

(315Hz, 0dB)

PFJ-1

level meter

output point

RV1002

RV1001

RV1002(Normal Speed)

RV1001(High Speed)