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16

• The cold reset clears all data including preset data stored in the

RAM to initial conditions. Execute this mode when returning
the set to the customer.

Procedure:
1.Turn the power ON or set to the DEMO mode.
2.Press three buttons of  c/CLOCK SET  ,  TUNER ENTER , and

\/1  simultaneously.

3. The set is reset, and displays “COLD RESET”, then becomes

DEMO mode.

• The AM tuning interval can be changed over 9 kHz or 10 kHz.
Procedure:
1.Press the  \/1  button to turn the power ON.
2.Select the function “TUNER”, and press the TUNER/BAND

button to select the BAND “AM”.

3. Press the  \/1  button to turn the power OFF.
4. Press the  ENTER/NEXT   and  \/1  buttons simultaneously,

and the display on the fluorescent indicator tube changes to
“AM 9 K STEP” or “AM 10 K STEP”, and thus the tuning
interval is changed over.

• 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.Press the  \/1  button to turn the power ON.
2. Press the EDIT  and  \/1  buttons simultaneously.
3. A message “LOCK” is displayed on the fluorescent indicator

tube, and the CD delivery mode is set.

Procedure:
1. Press three buttons of  c/CLOCK SET  ,  ENTER/NEXT  ,

and  DISC 2   simultaneously.

2. LEDs and fluorescent indicator tube are all turned on.
3.Press the  DISC 1  button, the MODE and DESTINATION are

displayed fluorescent indicator tube.

4.Each time the  DISC 1  button is pressed, the MC/GC category

version is displayed in the following order.

5.Press the  DISC 2  button, and the key check mode is acti-vated.

6. In the key check mode, the fluorescent indicator tube displays

“K 0 J0 V0”. Each time a button is pressed, “K” value in-creases
to “K69”call the button is pressed.However, once a button is
pressed, it is no longer taken into account.
“J” value increases like 1, 2, 3 ... if turn the . AMS > JOG
dial clock-wise,or it decreases like 0, 9, 8 ... if turn the
 . AMS >  JOG dial counter-clockwise.
“V” value increases like 1, 2, 3 ... if turn the  VOLUME   dial
clockwise (“+” direction), or it decreases like 0, 9, 8 ... if turn the
VOLUME dial counterclockwise (“–” direction).

7. To release from this mode, press three buttons in the same

manner as step 1, or disconnect the power cord.

NR

MC

GC

CD

CDDM

CDMA

CDMB

BDA

BDB

ST

TA

TM

TC

• This mode can run the CD sled motor freely. Use this mode, for

instance, when cleaning the pick-up.

Procedure:
1. Select the function “CD”.
2. Press three buttons  c/CLOCK SET  ,  TUNER ENTER , and

 DISC 5  simultaneously.

3. The Sled Servo mode is selected, if “CD” is blanking on the

fluorescent indicator tube.

4. With the CD in stop status, press  M  button in CD section to

move the pick-up to outside track, or  m  button to inside track.

5. To exit from this mode, press  \/1  button turn to the power OFF.
Note:
• Always move the pick-up to most inside track when exiting from

this mode. Otherwise, a disc will not be unloaded.

• Do not run the sled motor excessively, otherwise the gear can be

chipped.

• The FUNCTION name of external input terminal can be changed

over to VIDEO or MD. With the FUNCTION selected to “MD”,
about 5dB mute is applied to the input gain.

Procedure:
1. Press  \/1  button to turn the power OFF.
2. Press  \/1  button together with  FUNCTION  button for

several seconds, and the power is turned on, the display of
fluorescent indicator tube changes to “MD” or “VIDEO”
instantaneously, and thus the FUNCTION is changed over.

This mode can be used for operation check of tape deck section.
Tape deck section work in parallel.
• If an error occurred:

The aging operation stops and display then status.

• If no error occurs:

The aging operation continues repeatedly.

Procedure:
1.Load the tapes into the decks A and B respectively.
2.Press the  FUNCTION   button to select the function “CD”.
3.Press the  PLAY MODE   button to set the “ALL DISCS” mode,

and press the  REPEAT   button to “REPEAT” off.

4. Press three buttons of   c/CLOCK SET  ,  TUNER ENTER  ,

and  DISC 4  simultaneously.

5. The aging mode is activated, if the indicator of disc tray num-

ber on the fluorescent indicator tube is blinking.

6. To release from the aging mode, press the  \/1  button to turn

the power OFF and operate the cold reset. (Refer to the “MC
Cold Reset”)

• Display operating state of tape deck section alternately.
• If an error occurred, stop display.

17

FWD the tape A

“TAPE A AG-2”

Fast forward the tape A

“TAPE A AG-3”

RVS the tape A

“TAPE A AG-4”

Rewind the tape A

“TAPE A AG-5”

FWD the tape B

“TAPE B AG-2”

Rewind the tape A

“TAPE A AG-1”

Fast forward the tape B

“TAPE B AG-3”

RVS the tape B

“TAPE B AG-4”

Rewind the tape B

“TAPE B AG-5”

Shut off

2 minutes

Shut off or 20 seconds

2 minutes

Shut off

2 minutes

Shut off or 20 seconds

2 minutes

Shut off

• The sequence during the aging mode is following as below.
• If an error occurred, stop display that step.

 “TAPE * AG- * ” is display of each step.

• The sequence during the aging mode is following as below.
• If an error occurred, stop display that step.

DISC 1

chucking

TOC Read

Track 1 Play

Tray Tun

Tray Turn

DISC 4

Chucking

2 seconds

Last Track Play

TOC Read

Track 1 Play

Last Track play

• The volume control by VACS is turned ON/OFF.
Procedure:
1.Press the  \/1  button to turn the power ON.
2.Press the  PLAY MODE  and  \/1  buttons simultaneously.
3.The reaction display appears when switcing ON/OFF.

2 seconds

2 seconds

18

Mode

Torque Meter

Meter Reading

            2.9~6.9 mN•m

FWD

(30 to 70 g•cm)

(0.42 – 0.97 oz•inch)

FWD

     CQ-102C

0.19~0.59 mN•m

back tension

 (2 to 6 g•cm)

(0.03 – 0.08 oz•inch)

7.8~16.7 mN•m

FF/REW

     CQ-201B

 (80 to 170 g•cm)

(1.11 – 2.36 oz • inch)

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.

   DECK SECTION     0 DB = 0.775 V

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

tizer.

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 other-wise

specified.

8. Set to the DOLBY NR OFF.
9. Set to the test mode.

(1) Press the  \/1  button to turn the power ON.
(2) Select the function “TAPE A or B”.

(3) Press the button of  c/CLOCK SET  ,  TUNER ENTER ,

and  DISC 3  simultaneously, to set the tape deck test mode
and displays “TEST MODE” on the fluorescent indicator
tube.

(4) To release from the test mode, press the  \/1  button.

• Test Tape

Tape

Signal

Used for

P-4-A100

10 kHz, – 10 dB

Azimuth Adjustment

WS-48B

3 kHz, 0 dB

Tape Speed Adjustment

19

 Perform this adjustments for both decks

Procedure:
1. Mode: Playback (FWD)

set

MAIN board
MD (VIDEO) OUT jack (J701)
L-CH, R-CH

+

level meter

test tape
P-4-A100
(10 kHz, – 10 dB)

Screw
position

L-CH
peak

within
1dB

Output
level

L-CH
peak

R-CH
peak

within
1dB

Screw
position

R-CH
peak

3. Mode: Playback

set

test tape
P-4-A100
(10 kHz, – 10 dB)

R-CH

oscilloscope

L-CH

R-CH

V

H

waveform of oscilloscope

in phase 45

°

90

°

135

°

180

°

good

wrong

MAIN board
MD (VIDEO) OUT jack (J701)
L-CH

4. Repeat step 1 to 3 in playback (REV) mode.
5. After the adjustments, apply suitable locking compound to the

pats adjusted.

Adjustment Location: Playback Head (Deck A).

 Record/Playback/Erase Head (Deck

B).

Mode: Playback

+
–

set

test tape
WS-48B 
(3 kHz, 0 dB)

MAIN board
MD (VIDEO) OUT jack (J701)
L-CH, R-CH

frequency counter

1. Insert the WS-48B into the deck B.
2. Press the  H  button on the deck B.
3. Press the  H SPEED DUB   button in playback mode.

Then at HIGH speed mode.

4. Adjust RV392 on the LEAF SW board do that frequency

counter reads 6,000 ± 180 Hz.

5. Press the  H SPEED DUB   button.

Then back to NORMAL speed mode.

6. Adjust RV391 on the LEAF SW board so that frequency

counter reads 3,000 ± 90 Hz.

Adjustment Location: MAIN board
Sample value of Wow and Flutter: 0.3% or less W.RMS (JIS)

         (WS-48B)

forward

reverse

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.