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– 9 –

(Perform after removing the front panel.)

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)

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• 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  

p  ,  ENTER/NEXT  , and  1/u  simultaneously.

2. “COLD RESET” is displayed on the fluorescent display tube and reset is executed.

• 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  

1/u  button to turn the set ON.

2. Press  LOOP  button and  

1/u  button simultaneously.

3. A message “LOCK” is displayed on the fluorescent indicator tube, and the CD delivery mode is set.

• This mode resets the set with the preset data kept stored in the memory.  The hot reset mode functions same as if the power cord is plugged

in and out.

Procedure:
1. Press three buttons  

p  ,  ENTER/NEXT  , and  DISC 1  simultaneously.

2. The fluorescent indicator tube becomes blank instantaneously, and the set is reset.

• This mode can run the CD sled motor freely. Use this mode, for instance, when cleaning the pick-up.
Procedure:
1. Press  

1/u  button to turn the set ON.

2. Press three buttons  

p  ,  ENTER/NEXT  , and  §  simultaneously.

3. The Sled Servo mode is selected, if “CD” is blanking on the fluorescent indicator tube.
4. With the CD in stop status, When the  

) +  button is pressed the optical pick-up moves outside. When  – 0  button is pressed , it moves

inside.

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

1) Move the optical pick-up to the most inside track.
2) Execute MC cold reset. (Press the three buttons  

p  ,  ENTER/NEXT  , and  1/u  button simultaneously.)

Note:
• Always move the optical 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.

• A step of AM channels can be changed over between 9kHz and 10kHz.
Procedure:
1. Press  

1/u  button to turn the set ON.

2. Select the function “TUNER”, and press  TUNER/BAND  button to select the BAND “AM”.
3. Press  

1/u  button to turn the set OFF.

4. Press  ENTER/NEXT  and  

1/u  buttons simultaneously, and the display of  fluorescent indicator tube changes to “AM 9k STEP” or “AM

10k STEP”, and thus the channel step is changed over.

Procedure:
1. Press three buttons  

p  ,  ENTER/NEXT  , and  DISC 2  simultaneously.

2. LEDs and fluorescent indicator tube are all turned on.

Press  DISC 2  button, and the key check mode is activated.

3. In the key check mode, the fluorescent indicator tube displays “K 0 V0 J0”.  Each time a button is pressed, “K”value increases. However,

once a button is pressed, it is no longer taken into account.
“J” Value increases like 1, 2, 3 ... if rotating  

0 AMS )  knob in “+”  direction, or it decreases like 0, 9, 8 ... if rotating in “-” direction.

“V” Value increases like 1, 2, 3 ... if rotating  VOLUME  knob in “+”  direction, or it decreases like 0, 9, 8 ... if rotating in “-” direction.

4. To exit from this mode, press three buttons in the same manner as step 1, or disconnect the power cord.

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• This mode is used for checking the AMS operations of the tape deck.

JIG
7-819-039-12 Alignment tape, AMS-110A

Procedure:
1. Press the  

1/u  button to turn the unit ON.

2. Set the tape (AMS-110A).
3. Press the three buttons  

p  ,  ENTER/NEXT  , and  DISC 3  button simultaneously.

4. “TEST MODE” is displayed on the fluorescent display tube.
5. Press the  FUNCTION  button and switch the function to the deck with the tape (AMS-110A).
6. Press the  CD SYNC  button. “AMS CHECK” is displayed on the fluorescent display tube and the tape is rewound.
7. AMS starts in the normal direction. If the AMS count is 2 at shut down, proceed to step 8.

“NG” is displayed at other times, and the deck stops.

8. AMS starts in the opposite direction. If the AMS count is 2 at shut down again, “OK” is displayed.

“NG” is displayed at other times.

Note: The  

p  button of CD section will become effective and the aging of CD section will stop sometime, if the buttons described in step 3

are not pressed simultaneously. In that case, press  

^  button and operate the CD section.

– 12 –

On this mode, the data of the color-bars signal as a picture signal and the 1kHz sine wave signal as a sound signal are output by the
mechanism control microcomputer (IC502) for video CD signal check. When measurement of the voltage and waveform on the VIDEO
board, perform it in this mode.
For refernce, the color-bars signal can be observed at J302 (VIDEO OUT) and the sound signal can be observed at J101 (VIDEO/MD
(AUDIO) OUT) using an oscilloscope.
1. Connect the lead wire to both ends of the land of SL503 of the VIDEO board.
2. Turn the power on. Press  FUNCTION  button to select CD.
3. After 2 or 3 seconds later, connect the lead wire.
4. After measuring, remove the lead wire connected.

SL501

D502

SL502

IC507

IC505

CT503

SL503

TEST MODE

VIDEO
FREQUENCY

SL501

IC502

SL502

SL503

TEST

MODE