MDX-C800REC (serv.man4) - Sony Car Audio Service Manual (repair manual). Page 5

5

Procedure:
1. Connect an oscilloscope between TP (TE) and TP (VC).
2. Set the test mode. (See page 2.)
3. Insert the test disc TDYS-1 and press  5  key.
4. Press  3  key.

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5. The traverse is automatically adjusted. Verify that the waveform

of the oscilloscope meets the specified value.

6. If outside the specified value, use   DISC +  or   DISC –   to adjust

the waveform.
Pressing of   DISC +   or   DISC –   will cause the value after
automatic adjustment to be varied.

7. Press   + > M   key for 2 seconds to save the data set in steps

5 and 6.
After saving the data, verify that the initial set value is equal to
the value after automatic adjustment.

8. Press  3  key. The traverse adjustment is completed.

+
–

Procedure:
1. Set the test mode. (See page 2.)
2. Insert the continuously recorded disc (see page 3.) and press  5

key.

3. Press  4  key and check the error rate in the current focus bias

setting.

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<Setting the focus bias point A>
4. Verify that the first digit of the C1 error rate are “0”. Then,

press  4  key.

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5. Press   DISC +   key until the C1 error rate value reaches “1.00”

(Note 1).

6. Press   + > M   key for 2 seconds to save the data set in step

5.

<Setting the focus bias point B>
7. Press  4  key.

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8. Press   DISC –   key until the C1 error rate value reaches “1.00”

(Note 1).

9. Press   + > M   key for 2 seconds to save the data set in step

8.

10. Press  4  key.

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