Good luck! I think I have every bit of documentation
Kaypro ever produced (including internal-only docs)
and there appears to be NO schematic of the disk controller
board.
How complicated is it? Since you know the pinouts of the external
connectors (don't you?), I would guess you could draw out a schematic in
a few afternnons. Probably take less time to do that that to find an
original....
-tony