Marantz SD873 User Manual

List of test equipment and their uses for servicing the amplifier.

Details of Printed Wiring boards used in the amplifier section.

Procedures for adjusting amplifier settings like bias and current.

Description of the µPD75208 microcontroller and its associated circuits.

Details the function and type of input/output for each pin of the microcontroller.

Illustrates various input/output circuit types used in the system.

Details voltage distribution for QS01, QS02, and other ICs in different operational modes.

Details regarding the PL14 P.W. Board, including voltage distribution.

Lists test equipment and their uses for tuner alignment and troubleshooting.

Identifies the Printed Wiring boards used within the tuner section.

Step-by-step instructions for aligning FM RF, multiplex, and AM sections.

Diagrams showing test points and alignment locations on the tuner circuit board.

Details the functions, key matrix, pin connections, and block diagram of the tuner microprocessor.

Lists the Printed Wiring boards used within the cassette deck section.

Lists test equipment and their uses for servicing the cassette deck.

Describes the operation of the playback equalizer IC, bias circuit, and switching.

Details the operation, checks, and functions of the microprocessor in the deck.

Describes the operation of the cassette mechanism: STOP, FWD PLAY, REVERSE PLAY, FWD/REV PLAY, CUE/REVIEW.

Provides procedures for unit disassembly and electrical adjustments.

Procedures for tape speed, head azimuth, output level, and frequency response measurements.

Detailed technical specifications for the audio section, including power output and distortion.

Specifications for FM, MW, and LW tuner sections, including frequency range and sensitivity.

Specifications for the cassette deck, including frequency response, wow/flutter, and power requirements.