Optical Pickup Self-Diagnosis And Replacement Procedure - Technics SL-DV250 Service Manual

6. Optical Pickup Self-Diagnosis and Replacement
Procedure
6.1. Self-diagnosis
The optical pickup self-diagnosis function and tilt adjustment check function have been included
in this unit. When repairing, use the following procedure for effective Self-diagnosis and tilt
adjustment.Be sure to use the self-diagnosis functionbefore replacing the optical pickup when
"NO DISC" is displayed. As a guideline, you should replace the optical pickup when the value of
the laser drive current is more than 55.
Note:
Press the power button to turn on the power, and check the value within three minutes before the
unit warms up. (Otherwise, the result will be incorrect.)
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