MDX-C800REC (serv.man4) - Sony Car Audio Service Manual (repair manual). Page 4

4

KMS-263A
2 7 X 9 3
B 0 8 2 5

Ω

  For the measurement points, see page 7.

Procedure:
<Setting the write power reference value>
1. Connect a digital voltmeter between TP (I+3V) and TP (IOP).
2. Set the test mode. (See page 2.)
3. Insert a laser power meter into the disc insertion port and press  5

key.

4. Press  2  key.

LCD display

+
–

5. Use   DISC +   or   DISC –   key to adjust so that the reading on

the laser power meter is 6.9 to 7.1 mW.

6. Press   + > M   key for 2 seconds to save the data that has

been set in step 5.

7. Verify that the digital voltmeter reads out the specified value.

Specified value:
Reading on the digital voltmeter: Optical pick-up label indication
value ±10%

<Setting the read power reference value>
8. Press  2  key.

LCD display

9. Use   DISC +   or   DISC –   key to adjust so that the reading on

the laser power meter is 0.69 to 0.71 mW.

10. Press   + > M   key for 2 seconds to save the data that has

been set in step 9.

11. Press  2  key.

LCD display

12. Verify that the reading on the laser power meter is 6.0 to 6.4

mW.
If outside the specified value, adjust again from step 1.

13. Press  2  key. The laser power adjustment is completed.