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Yamaha RX-500U Service Manual

Yamaha RX-500U
33 pages
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Yamaha RX-500U Specifications

General IconGeneral
Tuning rangeFM, MW
Frequency Response20Hz to 20kHz
Output150mV (line)
Total Harmonic Distortion0.015%
Input Sensitivity150mV (line)
Signal-to-Noise Ratio100dB (line)
Channel separation50dB (line)
Speaker load impedance4-16 ohms
Dimensions435 x 151 x 386mm (W x H x D)

Summary

TO SERVICE PERSONNEL

IMPORTANT NOTICE

SPECIFICATIONS

AUDIO SECTION

Technical specifications related to audio performance, power output, and input sensitivity.

FM SECTION

Technical specifications for the FM tuner section, including sensitivity, selectivity, and signal-to-noise ratio.

AM SECTION

Technical specifications for the AM tuner section, covering tuning range and sensitivity.

GENERAL

General specifications including power supply, power consumption, dimensions, and weight.

DISASSEMBLY PROCEDURES

BLOCK DIAGRAM

ADJUSTMENTS

POWER SUPPLY CHECK

Verification of DC voltage levels at various test points after power-on.

IDLING CURRENT ADJUSTMENT

Procedure to adjust idling current for power transistors using VR201 and VR202.

FM TUNER SECTION

Detailed adjustment steps for the FM tuner, including discriminator balance, sensitivity, and separation.

AM TUNER SECTION

Adjustment steps for the AM tuner, focusing on sensitivity and auto-search reception.

DIGITAL CONTROL SECTION

Procedures for confirming preset memory, tuning mode, and last channel memory operations.

PRINTED CIRCUIT BOARD (Pattern Side)

SCHEMATIC DIAGRAM

WIRING

IC BLOCK

IC104: LC6522C

Block diagram and pin functions for the LC6522C microcomputer.

PARTS LIST

ELECTRICAL PARTS

List of electrical components with part numbers, descriptions, and model applicability.

MECHANISM EXPLODED VIEW

REMOTE CONTROL TRANSMITTER

ELECTRICAL PARTS

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