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Yamaha CR-420 User Manual

Yamaha CR-420
22 pages
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Yamaha CR-420 Specifications

General IconGeneral
Frequency Response20Hz to 20kHz
Tuning RangeFM, MW
Input Sensitivity2.5mV (MM), 150mV (line)
Output150mV (line)
Speaker Load Impedance4Ω to 16Ω
Power Output22 W per channel into 8Ω (stereo)
Dimensions435 x 335mm
Channel Separation50dB (line)

Summary

Connection Diagram

Special Features of the CR-420 Receiver

Operating Cautions

Important Safety and Usage Guidelines

Essential safety instructions and operational advice for preventing damage and ensuring proper use of the receiver.

Front Panel Controls

Power, Speaker, and Tuning Controls

Details on power switch, speaker selection, high filter, tuner mode, FM muting, mode switch, and tuning knob.

Volume, Balance, and Input/Output Selectors

Explanation of volume, balance, input selector, and REC OUT selector functions for audio management.

Audio Adjustments and Indicators

Covers loudness, bass, treble controls, tuning/signal meters, tuning scale, and LED indicators.

Rear Panel and Connections

Antenna and Input/Output Terminals

Details on connecting antennas, input sources (PHONO, AUX), and tape deck connections (PB/REC OUT).

Speaker and Power Connections

Guidance on connecting speakers, AC outlets, voltage selector, and the main power line.

Broadcast Reception

FM Antenna and Tuning Procedures

Instructions for connecting FM antennas and performing FM broadcast tuning for optimal reception.

FM Muting and AM Reception

Explanation of FM muting function and procedures for AM radio tuning and reception.

Listening to Records

Turntable Setup and Playback

Guide to connecting a turntable, selecting the PHONO input, and optimizing record playback quality.

Audio Adjustment Controls

Loudness, Filter, and Tone Control Functions

Detailed explanation of the continuous loudness, high filter, and comprehensive tone controls for sound shaping.

Tape Playback and Recording

Recording and Dubbing Procedures

Instructions for independent audition/recording, tape deck connections, and tape-to-tape dubbing.

Block Diagram

Circuit Diagram

Specifications

Audio and FM Section Specifications

Detailed technical specifications for the receiver's audio output, input, and FM reception capabilities.

General and AM Section Specifications

Technical specifications for AM reception, general features, semiconductors, power, dimensions, and weight.

Troubleshooting Guide

Audio Section Troubleshooting

Common faults and solutions for the audio section, including power, sound output, and speaker issues.

Tuner Section Troubleshooting

Common faults and solutions for the tuner section, addressing issues like hum, interference, and reception problems.

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