• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Schematic help for a Pilot 505 amp please

Here's a bigger picture of the schematic of the Pilot SA-232 so it's easier to read:
1E0yi.jpg