Peavey Xr 600e Schematic Direct
While not a full circuit schematic, the official Peavey Operating Guide provides block diagrams and internal jack routing info (such as the Graphic Out and Power Amp Inputs) which are useful for troubleshooting.
The unit features Power Amp Inputs (23) and Graphic Out (20) jacks on the front/rear panel. These can be used to isolate whether a fault is in the preamp/mixer section or the power amplifier stage. Peavey Xr 600e Schematic
Always verify the fuse rating against the schematic before replacement; if it continues to blow, there is likely a shorted output transistor in the power section. While not a full circuit schematic, the official
through several online repositories. Since this model is older, the documentation is primarily available as digital PDF files which you can print onto paper for bench work. Always verify the fuse rating against the schematic