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— 17 —

The maximum volume is set, and the VOLUME MAX display
and the GEQ display are displayed for a moment regardless of
the amount of volume rotation.
The minimum volume is set, and the VOLUME MIN display
and the GEQ display are displayed for a moment regardless of
the amount of volume rotation.

Install a tape to the deck B.  Select TAPE B with the  FUNCTION
button.
Recording starts and PAUSE is released when the REC button
is pressed.
VIDEO is selected by the input FUNCTION.
Press the STOP button to stop recording and select TAPE B
with the  FUNCTION  button.
Rewind the tape by pressing the  REW  button and stop at the
recording start point.  Start playback from the recording start
point.

Install a tape to the deck A.  Select TAPE A with the  FUNCTION
button.
Press the  PLAY  button then press the  HI-SPEED DUBBING
button during playback.
The normal playback is obtained during normal speed playback
and the double speed playback is obtained during the double
speed playback.

Install a tape to the deck B.  Select TAPE B with the  FUNCTION
button.
Press the  REC  button.  When the PAUSE is released , recording
is started.
When the  HI-SPEED DUBBING  button is pressed during
recording, the double speed recording is established only when
the button is pressed.

The decks A and B are operated automatically for aging purpose.
When errors occur during aging, causes of errors are displayed and
the aging mode is stopped.

How to enter the aging mode
1. Turn on the main power.  Install a playback tape to deck A and

install a blank tape to deck B.

2. Select TAPE A with the  FUNCTION  button.
3. Press the three buttons of  STOP  ,  ENTER   and  GROUP

ENTRY  at the same time to enter the aging mode.

How to exit the aging mode.
Turn off the main power.
1. Rewind the tapes A and B.  Tapes stop at the shut-off of tape A

and the aging mode advances to the next step.
The message: TAPE A AG-1 appears.

2. The tape A is played back in the FWD mode.  After two minutes

of the FWD playback, the aging mode advances to the next
step.
The message: TAPE A AG-2 appears.

3. The tape A runs in fast forward.  After two minutes of fast

forward, or at the shut-off point, the tape is stopped and the
aging mode advances to the next step.
The message: TAPE A AG-3 appears.

4. The tape A is played back in the RVS mode. After two minutes

of the RVS playback, the aging mode advances to the next step.
The message: TAPE A AG-4 appears.

5. The tape A is rewound and stops at the shut-off.  The aging

mode advances to the next step.
The message: TAPE A AG-5 appears.

6. The tape B is played back in the FWD mode.  After two minutes

of the FWD playback, the aging mode advances to the next
step.
The message: TAPE B AG-2 appears.

7. The tape B runs in fast forward.  After two minutes of fast

forward, or at the shut-off point, the tape is stopped and the
aging mode advances to the next step.
The message: TAPE B AG-3 appears.

8. The tape B is played back in the RVS mode. After two minutes

of the RVS playback, the aging mode advances to the next step.
The message: TAPE B AG-4 appears.

9. The tape B is rewound and stops at the shut-off.  The aging

mode advances to the next step.
The message: TAPE B AG-5 appears.

* Select either VIDEO or MD of the external FUNCTION input.

1. Turn off the power.
2. Press the two buttons  ENTER  and  POWER  at the same time.

The main power is turned on and the other function of the
previous function is selected and displayed.  “MD” or “VIDEO”

*

Either the 9 kHz step or 10 kHz step can be selected for the AM
channel step.

1. Turn on the power and select TUNER using the FUNCTION

button.

2. Select AM with the TUNER/BAND button and turn off the

power.

3. Press the two buttons  ENTER  and  POWER  at the same time.

The main power is turned on and the other frequency step of
the previous mode is selected and displayed.  “AM 9k STEP”
or “AM 10k STEP”

— 18 —

•

•

To adjust the mechanism section, enter the mechanism section adjustment mode.
For how to enter the mechanism section adjustment mode, refer to each adjustment section.

1. Make sure that there is no disc in the unit.
2. Connect an oscilloscope to IC401

$™, IC4024 of the MAIN board.

3. Turn the power switch on.

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.

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

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

4. Press the  

p

  button,  ENTER  button and  GROUP 5  button simultaneously.

oscilloscope

IC401

$™

 D.SENS (CH1)

IC401

4

HHOUT (CH2)

GND

— 19 —

5. The disc table rotates in the clockwise direction. The disc table rotation time is displayed with ‘’PLUS ONE” slit as a measuring point.
6. Measure the waveform of the oscilloscope when the disc table is rotating.
7. Move the holder (sensor) center so that the flat portion center at the top of the D.SENS (CH1) input waveform and the ‘’H” center of

HHOUT (CH2) coincide.

8. Tighten the fixed screw to fix the disc table, then press the  CLEAR  button.
9. The disc table rotates in the counterclockwise direction. Measure the waveform and make sure that the flat portion center at the top of the

D.SENS (CH1) input waveform and the ‘’H” center of HHOUT (CH2) coincide.

10. If the adjustment is not successful, press the  CLEAR  button to rotate the disc table in the clockwise direction, and perform steps 6 to 9.
Note: During the adjustment mode, the rotational direction is switched each time the  CLEAR  button is pressed.

Pressing the  CHECK  button enters the loading mode which will be described later. Pressing the  CLEAR  button rotates the disc table

again.

HHOUT (CH2) waveform

D.SENS (CH1) waveform

Flat portion center of 
D.SENS (CH1) waveform

Fixed screw

Holder (sensor)

PLUS ONE

— 20 —

1. Check that there is no disc in the unit and then turn ON the power. Open the door, and set a disc in the PLUS ONE slit.
2. Close the door, and while pressing the  

p

  button,  ENTER  button and  GROUP 5  button simultaneously.

3. Press the  CHECK  button, and set the loading mode.
4. Press the  + ‚±  button and chuck the disc.
5. Adjust the magnet assembly and magnet holder so that A=B as shown in the figure.

1. Check that there is no disc in the unit and then turn ON the power. Open the door, and set a disc in the PLUS ONE slit.
2. Close the door, and while pressing the  

p

  button,  ENTER  button and  GROUP 5  button simultaneously.

3. Press the  CHECK  button, and set the loading mode.
4. Press the  + ‚±  button and chuck the disc.
5. Press  + ‚±  or  ≠º –  button to stop the disc holder A slightly away from the disc.
6. Rotate and adjust the adjusting screw so that the center of the disc and that of the disc holder coincide.

A B

Magnet ASSY

Magnet holder

Magnet ASSY

Screw (For adjustment)

Disc

Disc holder A

Disc holder A

Screw (For adjustment)

Disc

a = b

a b