The service manual is really great - thanks to it I was able to install the laser unit and thus "save" my CD-player, which seemed to be impossible before I had the manual.
Text excerpt from page 77 (click to view)
Clicking the version allows you to jump to the revised page. Also, clicking the version at the upper right on the revised page allows you to jump to the next revised page. Ver. 1.2 1.1 1.0 Date 2001.05 2000.12 2000.05 1999.09 Description of Revision Correction of part No. (T501) REVISED : Circuit change. Correction CORRECTION-1 (9-927-162-91) : Exploded views. New