ZS-D1 - Sony Audio Service Manual (repair manual). Page 20

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1.

Perform the traverse adjustment in the CD test mode. (Refer to
page XX.)
After adjustment, be sure to release test mode.

2.

Perform adjustments in the order given.

3.

Use the disc (YEDS-18, Parts No. 3-702-101-01) only when
so indicated.

4.

Short the both ends of R720 of the CD Board to stop functioning
of the anti-shock circuit. (Refer to page xx.)

Put the set into test mode (see page xx) and perform the following
checks.
Repair if there are any problems.

Press 

+ , = keys and confirm that the FOP moves smoothly

from the innermost to outermost circumference and back smoothly
and with no catching or abnormal noises.
+ : FOP moves to the outer circumference.
= : FOP moves to the inner circumference.

1.

Press the CD 

^ key. (Focus search operation is performed

continuously.)

2.

Look at the FOP objective lens and confirm that it moves up
and down smoothly, with no catching or abnormal noises.

3.

Press 

p key. (Focus search operation stops and the turntable

continues to turn.)
Press 

p key again longer, the turntable stops.

This check is to be done when the optical block is replaced.

1.

Connect the oscilloscope between TP (TE) and TP (VC).

2.

Put the set into CD test mode.

3.

Insert disc (YEDS-18) and press the 

+ and = keys to

move the FOP to the center.

4.

Press the CD key.

5.

Adjust RV703 that the waveform on oscilloscope is vertically
symmetric to 0 V.

6.

Release test mode after adjustment is completed.
(See page xx.)

Check Location :

 See page xx.

This check is to be done when the optical block replaced.

1.

Connect the oscilloscope between TP (RF) and TP (VC).

2.

Insert disc (YEDS-18) and press the CD 

^ key.

3.

Adjust RV701 for the maximum amplitude of the
oscilloscope waveform as shown.

•

RF signal reference waveform (eye pattern)

When observing the eye pattern, set the oscilloscope for AC range
and raise vertical sensivity.

Check Location :

 See page xx.