Do you have a question about the Pioneer A-777/HEWZ and is the answer not in the manual?
Covers essential safety precautions for technicians and product safety notices regarding component characteristics.
Details power output, distortion, frequency response, input/output levels, and control features.
Lists external and packing components with their respective part numbers and descriptions.
Schematic diagram for the PHONO AMP assembly, detailing its internal circuitry and components.
Schematic diagram for the INPUT SELECTOR assembly, illustrating its signal routing and switching.
Schematic diagram for the TONE AMP assembly, including tone controls and balance circuitry.
Schematics for POWER L and POWER R assemblies, detailing power amplification circuitry.
PCB connection diagram for the POWER SUPPLY assembly, showing component layout.
Detailed parts list for the POWER SUPPLY assembly, including semiconductors, capacitors, coils, resistors, and others.
Comparison of POWER SUPPLY assembly parts between AWZ3424 and AWZ3425 models.
Detailed description of all front panel controls, indicators, and jacks, explaining their functions and operation.
Procedure for adjusting idle current by setting controls and adjusting a specific VR on the POWER L assembly.