Threshold 4000 - Need Some Help

Anyone have an owners manual or schematic. Just came across a Prototype 4000. In checking the fuses the output and rail fuses are 6 amp fast blow and the AC fuse is 12 amp fast blow.
However the fuses in it are a hodge podge of different values. Such as 32V10Amp, 65V8Amp. Does anyone have or know the correct values. I have some 125V and 250V fuses of the correct amperage. Got any ideas here?