MDX-C800REC (serv.man3) - Sony Car Audio Service Manual (repair manual). Page 6

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11. Verify that the calculated point C error rate is “0.30” or less.

If more than “0.30”, adjust again from step 1.

12. Press  4  key. The focus bias adjustment is completed.

Note 1) Since the C1 error rate varies, the average should be read to

perform this adjustment.

Note 2) The relationship between C1 error rate and focus bias amount

is shown in the figure below.
Find out the points A and B in the above adjustment. The
total focus point C is automatically calculated from the
points A and B.

Procedure:
1. Set the test mode. (See page 2.)
2. Insert the test disc TDYS-1 and press  5  key.
3. Press  6  key to set the PLAY mode.

(Verify that the “SHUF1” indication is lit on the display.)

4. Verify that no number is displayed at the disc No. indicator.

If any number is displayed, repeatedly press   DSPL   key until
the number disappears (only two digits are displayed).

5. Press   ENTER   key and verify that the disc No. indicator shows

“3”.
If “7” is shown or there is no display, repeatedly press   ENTER
key until “3” is displayed.

LCD display

6. Verify that the C1 error rate is “0.30” or less.
7. Press  5  key. The CD error rate check 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  6  key to set the PLAY mode.

(Verify that the “SHUF1” indication is lit on the display.)

4. Verify that no number is displayed at the disc No. indicator.

If any number is displayed, repeatedly press   DSPL   key until
the number disappears (only two digits are displayed).

5. Press   ENTER   key and verify that the disc No. indicator shows

“3”.
If “7” is shown or there is no display, repeatedly press   ENTER
key until “3” is displayed.

LCD display

6. Verify that the C1 error rate is “0.30” or less.
7. Press  5  key. The MO error rate check is completed.