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 12 (click to view)
Performing the viewfinder adjustments
(The viewfinder is an optional accessory.)
Attaching the viewfinder
1 2
Check that the camera�s POWER switch is at the OFF position. Attach the accessory mounting plate to the viewfinder.
Remove mounting plate from the viewfinder
5
Connect the plug to the viewfinder�s connector. <Note> When connecting the plug to the viewfinder�s connector, ensure that it is fully and securely inserted.
Mounting plate supplied to AK-HC931P
Detaching the viewfinder
1 2 3
Pull up the knob on the mounting plate and slide the plate to attach the viewfinder.
Pull up the knob
Check that the camera�s POWER switch is at the OFF position. Loosen the stopper screw, pull up the knob on the mounting plate and slide the viewfinder along and off the plate.
Stopper screw Pull up the knob
3 4
Tighten the stopper screw securely.
Disconnect the plug from the viewfinder cable connector.