Excellent Service Manual and best price on the Internet. This Service Manual covers everything you could ever need including full circuit schematics, component layout diagrams, stripdown procedure and full parts list/breakdown. I needed this to carry out a modification to one of these headunits and this manual covered everything I needed. Fast delivery, processed within a few hours.
Text excerpt from page 36 (click to view)
5-2. SHADING CONPENSATION (When the Main PC board will be replaced.)
Step Figure Explanation
Press the [Shading Compensation] button. 1
Press [Download] button. 2 The current shading data will be read form projector and be saved this data to Personal Computer.
After replacing the Main PC Board, press [Upload] button. 3 The shading data (in the old PCB) will be written to the projector.