Do you have a question about the Marantz 510 and is the answer not in the manual?
Lists essential test equipment for servicing the amplifier.
Covers DC balance, bias, power output, distortion, gain, and meter calibration procedures.
Procedures for channel separation, hum and noise, and frequency response tests.
Lists causes for no/excessive line consumption and bias problems.
The main schematic diagram of the power amplifier.