Schematics manuals, etc for Punch 40, 75, Nakamichi

So, new to the forums, not found a lot on searches. Anyone have a good source of manuals, schematics, etc., or some you could send me? I've been dragging all of my old, broken amps out of the mothballs lately. Specifically, I have a Punch 40 "slider", a Punch 75, a Hifonics Hawk and a Nakamichi PA400M. Any help much appreciated, thanks.