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 13 (click to view)
Operation
Turning the lighting on/off
The overhead lighting can be turned on and off independently from the fan.
Dimming the lighting
The brightness of the lighting can be adjusted. ^ While the lighting is turned on, press the light button. The lighting will dim until the button is released.
^ Press the light button briefly to turn on the lighting. The light button indicator illuminates. ^ Press the light button briefly again to turn off the lighting. The light button indicator will go out.
^ If the button is pressed again, the lighting will brighten until the button is released. If the button is pressed continuously, the light will cycle between bright and dark. ^ Press the light button again to turn off the lighting.