I can't find a proper section for this kind of stuff, modman pls check it and eventually move it to a proper place.
I got this unit to repair and since I can't find any schematic I did R.E. it.
It's a rack unit with lots of modules inside.
They could be converted to pedal with a proper input buffer...
Module LM2012 (limiter)
schematic:
Module NG2 (noise gate)
schematic:
Module PSU5700 (pwer supply)
schematic: