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9

3

 Four screws

     (BVTP3 

×

 10)

2

 Wire (flat type) (15 core) (14 cm)

(CN371)

5

 MAIN board

4

 Two screws

(BVTP3 

×

 8)

1

 Connector

(CN21)

10

• 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 simulta-

neously.

2. The fluorescent indicator tube display “COLD RESET”, and

the set is reset.

• 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/u button to turn the set ON.

2. Press  CD LOOP  button and

1/u button simultaneously.

3. “STANDBY” is display and blinking wait untill “LOCK”

display before disconnect the AC cord.

• 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 pickup.

Procedure:
1. Press

1/u button to turn the set ON.

2. Select the function “CD”.
3. Press three buttons

p ,  ENTER/NEXT , and § simulta-

neously.

4. The Sled Servo mode is selected, if “CD” is blinking on the

fluorescent indicator tube.

5. With the CD in stop status, press

) + button to move the

pickup to outside track, or – 

0 button to inside track.

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

1) Move the pickup to the most inside track.
2) Press three buttons in the same manner as step 3.

 • 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.

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

and 10 kHz.

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 “MW”.

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 “MW 9 k
STEP” or “MW 10 k 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 J0 V0”.  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  JOG  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.

11

• 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