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Check for current leakage or resistance between power cord and chassis.
Procedure to remove the top cover by unscrewing it.
How to initialize the AV receiver after component replacement.
Procedure to adjust the idling current for the audio section.
Adjusting Y, Cb, Cr levels for component video output.
Level diagrams for the front, center, and surround audio channels.
Level diagrams for composite video input and processing.
Procedure to check microcontroller and DSP status via error display.
Pin functions for the M30624MGA microcontroller.
Details of 2SA/KTA1267GR transistor, including shape and performance.
Pin assignments for the front panel display segments.
Component layout diagram and parts list for the main PCB.
Parts list for the 1U-3470 connect/video unit assembly.
Parts list for the 1U-3471 control unit assembly.
Parts list for the 1U-3472 amplifier connect unit assembly.
Parts list for the 1U-3473 audio/digital unit assembly.
Parts list for the 1U-3474 DSP unit assembly.
Parts list for the 1U-3475 video unit assembly.
Explains how to read resistor codes and notations in the parts list.
Explains how to read capacitor codes and notations in the parts list.
Lists semiconductor components for the PWB unit, including part numbers and remarks.
Lists resistors for the PWB unit, including part numbers and remarks.
Lists capacitors for the PWB unit, including part numbers and remarks.
Critical warnings regarding parts replacement and servicing safety.
Precautions before returning the unit to the customer.
General information on resistance, capacitance, voltage, and circuit changes.
Schematic diagram of the audio input unit.
Schematic diagram of the digital unit.
Schematic diagram of the DSP unit.
Schematic diagram of the connect unit.
Schematic diagram of the front unit.
Exploded view showing the assembly and a corresponding parts list.
Notes on symbols used in the exploded view.
Schematic diagram of the display unit.
Schematic diagram of the volume control unit.
Schematic diagram of the convert unit.
Schematic diagram for COMP. D4 unit specific to Japan models.
Schematic diagram for COMP. VIDEO unit for non-Japan models.
General
