Actually, I was looking for this information for 3 years!...now thanks to you, the manual is on my hands and of great help, cause I understand now where I was doing wrong connections and wires...excellent, I'll be back to you if in need, thank you.
This manual covers the main equipment features only. While it also includes the procedure for saving and loading from the now long obsolete memory cards it does not mention the how to operate with the optional floppy drive interface so I am still at a loss about how to use this! Note that there is a separate manual covering the MIDI interface and programming via the keyboard, not included in this download. You will also need to get hold of this if you want to use the MIDI interface properly. Basically there is little difference between this manual and the free to download manual for the similar PR60 model.
Good list of manuals. I found a very rare one and easily get. Should be promptly to download, as we must to wait hours even after confirmed payment.
Text excerpt from page 35 (click to view)
PT-D3500U / PT-D3500E
(7)
Remove the projection lens 1. Fully turn the projection Lens counterclockwise. 2. Turn the projection lens counterclockwise in addition while pressing the lens lock button. 3. Remove the projection lens.
(8)
Unscrew the 8 screws and remove the optical block.
11.12. Removal of DMD Block and Lighting Block
(1) (2) Remove the optical block according to the section 11.11. "Removal of Optical Block". Unscrew the 4 screws and remove the heatsink.
(2)
Unscrew the 7 screws and separate the DMD block and lighting block.
Note:
· The DMD block periphery is composed of precise optical components. When disassembling or reassembling, work noting damage and the wound of the peripheral components.