Hello:
I don't have any real docs on that amp but.........it uses a 20-0166 power board. The same as the SA 20/21 and you will find documentation for the SA on this site. I have no schematics for the EQ or the input board but they rarely fail (except for dirty faders). It uses a 28-8200 transformer so you can get 300 watts at 2 ohms out of it.
I modified 2 of these with SA transformers and dual 20-0166 boards. They do 600 watts and I can plug 8 monitors into each one (or 4 bridged). Real handy at a live show.
