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.
Text excerpt from page 10 (click to view)
mounting thE dooR panEls
TO MOUNT THE DOOR PaNEL, FOLLOw THESE STEPS: 1. Open the door 90 degrees. 2. Remove the decoration strip. 5. Slide the handle into place. Make sure to fit the parts together, slot into the slot, as shown in the illustration below.
3. Insert the door panel�s edges into the grooves of the door frame. Push the panel sideways until the edge of the panel is fitted into the opposite side groove.
6. attach the handle with a screw.
4. Put back the decoration strip. Slide or snap into place.