The schematic is very helpful and the images are very good.The schematic is very helpful and the images are very good.The schematic is very helpful and the images are very good.The schematic is very helpful and the images are very good.The schematic is very helpful and the images are very good.The schematic is very helpful and the images are very good.
The manual for the Sansui P-L75 was not one of the more informative turntable manuals around but for $5 it was helpful enough.
Text excerpt from page 21 (click to view)
DVD-S54P / DVD-S54PC
9 SELF-DIAGNOSIS FUNCTION AND SERVICE MODES
9.1. Optical Pickup Breakdown Diagnosis
The optical pickup self-diagnosis function has been included in this unit. When repairing, use the following procedure for effective Self-diagnosis. Be sure to use the self-diagnosis function before replacing the TRV Unit when �NO DISC� is displayed. As a guideline, you should replace the TRV Unit when the value of the laser drive current is more than 60. 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.)
