Yamaha Clavinova CVP85A Floppy Emulator

by Matthew
(Ottawa, Canada)

I have a Yamaha Clavinova CVP85a. The 720DD drive recently failed and I bought an emulator from Le Trung on ebay.

I initially swapped it in without problem and hooked up the 34 pin connector and power connector without problem. It powered up but no green lights came on.

I put a Din Pin on M0 (slow read) and now it appears to be reading the disk and the keyboard appears to recognize that the drive is there. Other jumpers are set JA (not sure what this does) and S0 (which is the disk select I believe). I also tried closing J8 (which apparently sets 720 or 1.44 but made no difference)

However, when I put a pre-formatted jump drive in the keyboard asks to format the drive. So I did, and then I can record/play back from what appears to be the jump drive (can't prove that though). When I turn off the keyboard or try to switch virtual disks the data disappears.

If I take the jump drive back to my computer it doesn't appear to have been formatted and the previously "saved" data (by the keyboard) is not there but my old stuff is. So I think that although the keyboard thought it formatted the disk that it did not actually do so.

Jumper Block1:
J5 (open)
Ja (closed)
JC (open)
JB (open)
S0 (closed)
S1 (open)
M0 (closed)

Jumper Block 2:
J8 (open)
Unknown
Unknown
Unknown
Unknown

My question is this:
1) Are there specific jumper setting which will make this work.
2) Do I need and adaptor like mikes blunt (I already have 34 pins) - so no?
3) Do I need other PC software to correctly format?
4) will this ever work - is there something else - like swapping wires in the cable etc?