: Specific instructions for removing screws fastening the heat sink and its bracket to access power transistors.
: Critical instructions regarding high-voltage areas to prevent electric shock.
: Measurement of signal purity.
: Lists of common issues (e.g., no power, distorted audio) and their likely circuit-level causes.
: How to disconnect internal connectors and screws to free the main circuit boards. 4. Adjustments and Calibration
: Full electrical schematics showing signal paths and power distribution.