Vestax PPB Programmable Effect Board schematic? (pics)

[cb]

I have this effects switcher (Vestax PPB Programmable Effect Board) - it's old and I'm pretty sure it's no longer made.

Looking for the schem for this thing. I had heard it's supposed to be the same as the B.C. Rich model OEM'ed from a Japanese company (Prince). Maybe someone with the B.C. Rich pedal could take a look at theirs and compare to my pics?

Anyway, it is introducing it's own distortion - the flabby sound you get when you strike a note or chord - like low headroom, perhaps?

I found someone willing to have a look at it, but we need the schematic.

Thanks.

cb7149@hotmail.com