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.
Complete manual as pdf-file in very good quality. Very helpful and fast availability.
Text excerpt from page 50 (click to view)
XP-ZR810
REVISION HISTORY
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. 1.0 Date 2004.02 New Description of Revision