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 15 (click to view)
Positioning of shelves
Put a screwdriver into the slot of the shelf lock. Turn the screwdriver counterclockwise. Remove the shelf locks from the wire shelf.
Insert the ends of the wire shelf on the left-hand side at the desired position.
Slide the wire shelf to the left. The right-hand side of the shelf will come loose.
Slide the shelf into the holes on the right-hand side.
Lower the right-hand side of the wire shelf and let the left-hand side slide out of the holes in the wall.
Slide the plastic plugs into the holes of the wall. Snap the shelf locks onto the wire shelf.