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15

• A step of AM channels can be changed over between 9 kHz and

10 kHz.

Procedure:
1. Press ?/1 button to turn the set ON.
2. Select the function “TUNER”, and press  TUNER/BAND

button to select the BAND “AM”.

3. Press ?/1 button to turn the set OFF.
4. Press  TUNER/BAND  and ?/1 buttons simultaneously, and

the display of  fluorescent indicator tube changes to “AM 9 k
STEP” or “AM 10 k STEP”, and thus the channel step is changed
over.

• 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. Press three buttons x  ,  GROOVE  ,  and ?/1 simultaneously.
2. The fluorescent indicator tube displays “COLD RESET” and

the set is reset.

This mode can be used for operation check of CD section and tape
deck section.
• If an error occurred:

The aging operation stops and is displayed status.

• If no error occurs:

The aging operation continues repeatedly.

1.

Operating method of Aging Mode

Turn on the main power and select “CD” of the function.
1) Set three discs in tray.  Select ALL DISCS, and REPEAT OFF.
2) Load the tapes recording use into both decks.
3) Press three buttons x ,  GAME EQ ,  and

DISC SKIP/EX-CHANGE  simultaneously.

4) Aging operations of CD and tape are started at the same time.
5) To exit the aging mode, perform [Cold Reset].

2.

Aging mode in CD section

1) Operation during aging mode
• In the agining mode ,the program is excuted in the following

sequence.

(1) The disc tray opens and closes.
(2) The disc tray turns to select a disc 3.
(3) The pickup accesses to the first track, and plays 3 seconds.
(4) The pickup accesses to the last track, and plays 3 seconds.
(5) The disc tray opens and closes.
(6) The disc tray turns to select a disc 1.
(7) The same operation starts like step (3).
(8) After a disc 1 aging operation, a disc 2 is selected.
(9) When an aging operation of a disc 3 is completed, the display

“AGING 

∗∗∗∗

” value increases.

(10) If no error occurs, the aging operation continues repeatedly.

2) Error display

Step

1

2

3

4

5

6

7

8

9

10

11

12

Operation

Rewind the TAPE A

Rewind the TAPE B

Play the TAPE A (1 minute)

Stop the TAPE A (1 second)

Play the TAPE A (3 minutes)

Rewind(AMS) the TAPE A

F.F.(AMS) the TAPE A

Play the TAPE B (1 minute)

Stop the TAPE B (1 second)

Record the TAPE B (3 minutes)

Rewind(AMS) the TAPE B

F.F.(AMS) the TAPE B

Display

TAPE

AAG-1

TAPE

BAG-2

TAPE

AAG-2

TAPE

AAG-3

TAPE

AAG-4

TAPE

AAG-5

TAPE

AAG-6

TAPE

BAG-2

TAPE

BAG-3

TAPE

BAG-4

TAPE

BAG-5

TAPE

BAG-6

Disc error

Display

Error

E00D01022

Focus error (No disc)

E00D02022

Sub Q error (Focus is good)

E00D02023

TOC reading error

E00D02014

Access error (Unable within regular time)

Mechanism error

Display

Error

E00M__E_0

Error during opening tray

E00M__C_2

EX-CHANGE disc error

E00M__D_0

Error during closing tray

E00M__F_3

EX-OPEN error

E00M__D_5

EX-CLOSE error

E00M__C_2

Chuck-up error

E00M__C_3

Unchucking error

3.

Aging mode in Tape Deck section

1) Operation during aging mode
• In the agining mode, the program is excuted in the following

sequence.

2) Error display
• If error occurred, the display remains like “TAPE BAG-2”.

4.

Exiting from the aging mode

• Be sure to perform Cold Reset to exit from the aging mode.

16

• This mode is used to test the function of the equalizer.

Procedure:
1. Press  ?/1  button to turn the set ON.
2. To enter the test mode, press the three buttons  x ,  GAME EQ

and  DISC 3  simultaneously.

3. Press the  MOVIE EQ  button.

The function of the equalizer is set to “MIN”.

4. Press the  MUSIC EQ  button.

The function of the equalizer is set to “MAX”.

5. Press the  P.FILE  button.

The function of the equalizer is set to “FLAT”.

6. To exit from this mode, press  ?/1  button to turn the set OFF.

• This mode moves the pickup to the position durable to vibra-

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

Procedure:
1. Press ?/1 button to turn the set ON.
2. Select the function “CD”.
3. Press  ?/1  button to turn the set OFF.
4. Press  CD  button and  ?/1   button simultaneously.
5. The "STANDBY" display blinks instantaneously, and the CD

ship mode is set.

Procedure:
1.

Press the  ?/1  button to turn the set on.

2.

Press two buttons of  x  and  OPEN/CLOSE  simultaneously
for five seconds.

3.

The message “LOCKED” is displayed and the tray is locked.
(Even if exiting from this mode, the tray is still locked.)

4.

Press two buttons of  x  and  OPEN/CLOSE  simultaneously
for five seconds again.

5.

The message “UNLOCKED” is displayed and the tray is
unlocked.

6.

To exit from this mode, press the  ?/1  button to turn the set
off.

• All fluorecent segments and LEDs are tested.
• Keyboard check.

Procedure:
1. Press  ?/1  button to turn the set ON.
2. To enter the test mode, press the three buttons  x ,  GAME EQ

and  DISC 2  simultaneously.

3. All segments and LEDs (without STANDBY LED) are turned

on.

4. Press  GAME EQ  and  DISC 2  buttons simultaneously, and the

key check mode is activated.

5. The message “KEY 0 0 0 0” is displayed.

Each time a button is pressed, the key code number is displayed.

6. Press  GAME EQ  and  DISC 2  buttons simultaneously, and the

key count mode is activated.

7. The message “KEYCNT 0 1” is displayed.

Each time a button is pressed, “KEYCNT 0 1” value increased.
However, once a button is pressed, it is no longer taken into
account.

8. Press  GAME EQ  and  DISC 2  buttons simultaneously, and the

head phone detect mode is activated.

9. The message “H_P OFF” is displayed when a headphone jack

is not inserted.
“H_P ON ” is displayed when a headphone jack is inserted.

10. Press  GAME EQ  and  DISC 2  buttons simultaneously, and the

volume control detect mode is activated.

11. The message “VOLUME FLAT” is displayed.

“VOLUME UP” is displayed if rotating VOLUME knob
clockwise, or “VOLUME DOWN” is displayed if rotating
counterclockwise.

12. To exit from the GC test mode after the volume control detect

mode, press  GAME EQ  and  DISC 2  buttons simultaneously.

• The version or destination is displayed.

Procedure:
1. Press  ?/1  button to turn the set ON.
2. To enter the test mode, press the three buttons  x ,  GAME EQ

and  MOVIE EQ  simultaneously.

3. The destination is displayed.
4. Press  STOP  and  GROOVE  buttons simultaneously.
5. The version is displayed.
6. To exit from this mode, press  ?/1  button to turn the set OFF.

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

instance, when cleaning the pickup.

Procedure:
1. Press ?/1 button to turn the set ON.
2. Select the function “CD”.
3. To enter the test mode, press three buttons x ,  GAME EQ ,

and  OPEN/CLOSE  simultaneously.

4. The CD service mode is selected.
5. With the CD in stop status, press  

> 

 button  to move the pickup

to outside track, or press  

. 

 button to inside track.

6. To exit from this mode, perform as follows:

1) Move the pickup to the most inside track.
2) Press  ?/1  button to turn the set OFF.

 • Always move the pickup 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.

+

–

17

Procedure:
1.

Supply a 98 MHz signal at 28 dB from the ANTENNA terminal.

2.

Tune the set to 98 MHz.

3.

Adjust RV101 to the point (moment) when the TUNED
indicator will change from going off to going on.

Adjustment Location: MAIN board

Procedure:
1.

Supply a 98 MHz signal at 60 dB from the ANTENNA terminal.

2.

Tune the set to 98 MHz.

3.

Measure voltage between pin 21 and pin 23 of IC 101.  Adjust
T101 until the voltage becomes 0 V.

Adjustment Location: MAIN board

FM RF Signal generator

75 

Ω

 coaxial

Carrier frequency : 98 MHz
Modulation           : AUDIO 1 kHz, 75 kHz
                              deviation (100%)
Output level          : 30 dB  (at 75 

Ω

 open)

FM ANTENNA terminal
(JK103)

set

FM RF Signal generator

75 

Ω

 coaxial

Carrier frequency : 98 MHz
Modulation           : AUDIO 1 kHz, 75 kHz
                              deviation (100%)
Output level          : 60 dB  (at 75 

Ω

 open)

FM ANTENNA terminal
(JK103)

set

T101: NULL

IFT101: AM IF

RV101: 
FM TUNED LEVEL

AM RF Signal generator

30% amplitude
modulation by
400Hz signal
output level : as low as possible

AM ANTENNA terminal
(JK103)

set

Procedure:
1.

Set the frequency of the AM RF signal generator to 1000 kHz
(at 10 kHz step) or 999 kHz (at 9 kHz step).

2.

Tune the set to AM 1000 kHz (at 10 kHz step) or 999 kHz (at 9
kHz step).

3.

Adjust IFT101 so that the reading on level meter becomes in
maximum.

headphones jack (JK691)

level meter

set

16 

Ω

18

CN731

TP731:
TP connected to pin 

q;

 (IC751)

IC751

CN733

IC731

Adjustment Location: CD board

[CD BOARD] (Component Side)

Procedure :
1. Connect oscilloscope to pin q; (IC751).
2. Turned Power switch on.
3. Load a disc (YEDS-18) and playback.
4. Confirm that oscilloscope waveform is clear and check RF signal

level is correct or not.

q; 

Note :

Clear RF signal waveform means that the shape “ 

◊

 ” can be clearly

distinguished at the center of the waveform.

Note :

1. CD Block is basically designed to operate without adjustment.

Therefore, check each item in order given.

2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.
3. Use an oscilloscope with more than 10M

Ω

 impedance.

4. Clean the object lens by an applicator with neutral detergent

when the signal level is low than specified value with the
following checks.