HCD-VP700 - Sony Audio Service Manual (repair manual). Page 15

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[VCD COLOR SYSTEM MODE]
• This mode is used for changing the COLOR SYSTEM of the

VCD.

Procedure:
1. Set the standby mode.
2-1.Press the two buttons  `/1 and  >  simultaneously to set the

COLOR SYSTEM of the VCD to AUTO.

2-2.Press the two buttons  `/1 and  . simultaneously to fix the

COLOR SYSTEM of the VCD to PAL.

2-3.Press the two buttons  `/1 and  X  simultaneously to fix the

COLOR SYSTEM of the VCD to NTSC.

3. The power tune ON automatically and the function sets to“CD’’.
4. The FL tube shows the COLOR SYSTEM mode see .
5. The COLOR SYSTEM mode set is maintained (memorized)

until COLD RESET is executed.

[VIDEO CD Color-bars Mode]
On this mode, the data of the color-bars signal as a picture signal
and the 1 kHz sine wave signal as a sound signal are output by the
mechanism controller (IC502) for the video CD signal check.  When
measurement of the voltage and waveform on the VIDEO board,
perform it in this mode.
For reference, the color-bars signal can be observed at J302  using
an oscilloscope.
Procedure:
1. Short the both ends of the land of SL503 of the VIDEO board.
2. Turn the power on. Press the  CD  button to select CD.
3. The color-bars appears when the CD is in stop status, and it

disappears when the CD goes in play status.

4. After measuring, remove the lead wire connected.VIDEO board

(SIDE B)

[CD Servo ON/OFF Mode]
Procedure:
1.

Short SL502 on the VIDEO board by soldering.

2.

Turn on the main power.  Set a disc on the DISC1 tray.  Select
CD.

3.

Press the hH button to play back CD.

4.

When the  >  button is pressed, 100 track jump is executed.

5.

Also, every pressing of the PLAY MODE button triggers
between  ON and OFF of TRACKING SERVO and SLED
SERVO.

How to quit the CD servo ON/OFF mode:
1.

Press the  ?/1  button to turn off the main power.

2.

Remove soldering from SL502.

[REPEAT 5 LIMIT OFF MODE]
• This mode is used to enable infinite repetitions.

Normally, the number of repetitions allowed is 5.

Procedure:
1. Press the  `/1  button to turn ON the power supply.
2. Set the function “CD”.
3. Press the three burtons  ENTER ,  DISC 3 , and  x    is

simultaneously.

4. Infinite repetitions is enabled.
5. This state is maintained ( memorized ) until COLD RESET is

executed.

J301

CN501

J302

1  2  3

CN503

SL503

SL502

SL501

CHECK LED

CN502