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17

• This mode moves the optical pick-up to the position durable to

vibration. Use this mode when returning the set to the customer
after repair.

Procedure:
1. Set to the standby state.
2. Press  three  buttons

x

, 

[ENTER]

 and 

[GAME]

 simultaneously.

3. After the “STANDBY” display blinks, a message “LOCK” is

displayed on the fluorescent indicator tube, and the CD ship
mode is set.

• This mode moves the optical pick-up to the position durable to

vibration. Use this mode when returning the set to the customer
after repair.

Procedure:
1. Set to the standby state.
2. Press the 

[CD]

 and

?/1

buttons simultaneously.

3. After the “STANDBY” display blinks, a message “LOCK” is

displayed on the fluorescent indicator tube, and the CD ship
mode is set.

18

0 dB=0.775 V

1. Demagnetize the record/playback head with a head

demagnetizer.

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

parts adjust.

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.

• Test Tape

  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.

set

MAIN board
CN301
Pin 

1

 (L-CH)

Pin 

3

 (R-CH)

MAIN board
CN301
Pin 

2

 (GND)

+
–

level meter

test tape
P-4-A100
(10 kHz, –10 dB)

3.06 N • m to 6.96 N • m

31 to 71 g • cm

(0.43 – 0.98 oz • inch)

0.19 N • m to 0.58 N • m

2 to 6 g • cm

(0.02 – 0.08 oz • inch)

3.06 N • m to 6.96 N • m

31 to 71 g • cm

(0.43 – 0.98 oz • inch)

0.19 N • m to 0.58 N • m

2 to 6 g • cm

(0.02 – 0.08 oz • inch)

6.96 N • m to 14.02 N • m

71 to 143 g • cm

(0.98 – 1.99 oz • inch)

9.80 N • m

100 g or more

(3.53 oz or more)

9.80 N • m

100 g or more

(3.53 oz or more)

CQ-102C

CQ-102C

CQ-102RC

CQ-102RC

CQ-201B

CQ-403A

CQ-403R

FWD

FWD

back tension

REV

REV

back tension

FF/REW

FWD tension

REV tension

P-4-A100

10 kHz, –10 dB

Azimuth Adjustment

WS-48B

3 kHz, 0 dB

Tape Speed Adjustment

19

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 1dB of peak.

3. Mode:  Playback

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

pats adjusted.

Adjustment Location: Playback Head (Deck A).

Record/Playback/Erase Head (Deck B).

Start the Tape Speed adjustment as below after setting to the test
mode.
In the test mode, the tape speed is high during pressing the

[CD SYNC HI-DUB] 

button.

Procedure:
1. Press

?/1

button to turn the set ON.

2. Press three buttons

x

, 

[ENTER]

 and 

[DISC 3]

 simultaneously.

To release from the test mode, press the

?/1

button.

Mode:  Playback

1. Insert the WS-48B into the deck B.
2. Press the hH button on the deck B.
3. Press the 

[CD SYNC HI-DUB]

 button in playback mode.

Then at HIGH speed mode.

4. Adjust RV1001 on the SW board so that frequency counter reads

6,000 

±

 180 Hz.

5. Press the 

[CD SYNC HI-DUB]

 button.

Then back to NORMAL speed mode.

6. Adjust RV1002 on the SW board so that frequency counter reads

3,000 

±

 90 Hz.

Adjustment Location: SW board

Sample Value of Wow and Flutter: 0.3% or less W. RMS (JIS)

(WS-48B)

Screw
position

L-CH
peak

within
1dB

Output
level

L-CH
peak

R-CH
peak

within
1dB

Screw
position

R-CH
peak

MAIN
board
CN301
set

test tape
P-4-A100
(10 kHz, –10 dB)

pin 

3

oscilloscope

L-CH

R-CH

V

H

waveform of oscilloscope

in phase 45

°

90

°

135

°

180

°

good

wrong

pin 

2

pin 

1

L

R

+
–

set

test tape
WS-48B 
(3 kHz, 0 dB)

MAIN board
CN301 Pin 

2

 (GND)

MAIN board
CN301
Pin 

1

 (L-CH)

Pin 

3

 (R-CH)

frequency counter

forward

reverse

20

4. Mode:  Record

5. Mode:  Playback

6. Confirm the play back signal recorded in step 3 becomes

adjustable level as follows.
If these levels are not adjustable level, adjust the RV301 (L-
CH) and RV351 (R-CH) on the MAIN board to repeat steps 4
and 5.

Adjustable level:
CN301 PB level:  47.2 to 53.0 mV (–24.3 to –23.3 dB)
Adjustment Location:  MAIN board

Procedure:
In the MC test mode, the “REC memory mode” is convenient for
this adjustment. In the “REC memory mode” , when the REC starts
the input signal FUNCTION is switched to VIDEO automatically.
When the REC stops, the tape returns near to the recording start
position.

1. Press

MD (VIDEO)

button to select VIDEO. (This step is not

necessary if the above test mode has already been set)

2. Insert a tape into deck B.
3. After press 

[REC PAUSE/START]

 button, press 

[REC PAUSE/

START]

 button, then recording start.

4. Mode:  Record

5. Mode:  Playback

6. Confirm the playback signal recorded in step 3 becomes

adjustable level as follows.
If these levels are not adjustable level, adjust the RV304 (L-
CH) and RV354 (R-CH) on the MAIN  board to repeat steps 4
and 5.

Adjustable level: Playback output of 315 Hz to playback output

of 10 kHz:  

±

1.0 dB

Adjustment Location:  MAIN board

Procedure:
In the MC test mode, the “REC memory mode” is convenient for
this adjustment. In the “REC memory mode” , when the REC starts
the input signal FUNCTION is switched to VIDEO automatically.
When the REC stops, the tape returns near to the recording start
position.

1. Press

MD (VIDEO)

button to select VIDEO. (This step is not

necessary if the above test mode has already been set)

2. Insert a tape into deck B.
3. After press 

[REC PAUSE/START]

 button, press 

[REC PAUSE/

START]

 button, then recording start.

attenuator

set

MAIN board
MD/VIDEO (AUDIO) IN (J750)

1) 315 Hz
2) 10 kHz

50 mV (–23.8 dB)







600 

Ω

blank tape
CN-123

AF OSC

+
–

set

recorded
portion

MAIN board
CN301 Pin 

2

 (GND)

MAIN board
CN301
Pin 

1

 (L-CH)

Pin 

3

 (R-CH)

level meter

set

MAIN board
MD/VIDEO (AUDIO) IN (J750) 
315 Hz, 50 mV (–23.8 dB)

blank tape
CS-123

600 

Ω

attenuator

AF OSC

+
–

set

recorded
portion

MAIN board
CN301 Pin 

2

 (GND)

MAIN board
CN301
Pin 

1

 (L-CH)

Pin 

3

 (R-CH)

level meter

TAPE SPEED

ADJUSTMENT

RV1002

RV1001

(NORMAL)  (HIGH)

CN1001





















– SW BOARD (Component Side) –

– MAIN BOARD (Component Side) –

REC LEVEL

ADJUSTMENT

REC BIAS ADJUSTMENT

CN301

3

1

(R-CH)

(R-CH)

(L-CH)

(L-CH)

RV301

RV351

RV304

RV354



























