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 7 (click to view)
5. Mount the safety wire angle (accessory) on the 2nd anchor bolt and connect the safety wire (accessory) to the angle. q Disconnect the safety wire from the Anchor bolt Upper side safety wire angle. Mark w w Engage the face marked q with the anchor bolt. w Insert e Bend e Bend the face marked w. q Disconnect r Connect the safety wire to the safety wire angle again.
Safety wire Mark q Lower side Safety wire angle r Connect
Note: To use the anchor bolt that was already installed, the use of 2 spacer nuts is helpful.