HCD-DP800AV, MHC-DP800AV - Sony Audio Service Manual (repair manual). Page 16

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[CD Service Mode]
• 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. Press three buttons  ENTER  ,  DISC 1  , and  x   simultaneously.
4. The CD service mode is selected.
5. With the CD in stop status, press  M  button to move the

pickup to outside track, or press  m  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.

Note:
• 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.

[VACS ON/OFF MODE]
• This mode is used to switch ON and OFF the VACS (Variable

Attenuation Control System).

Procedure:
Press the three buttons  x  ,  ENTER  and  SPECTRUM  or

KARAOK PON  simultaneously.

[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.