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Yamaha R-90 User Manual

Yamaha R-90
14 pages
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Yamaha R-90 Specifications

General IconGeneral
Input Sensitivity (line)150mV
Tuning RangeFM, MW
Input Sensitivity (MM)2.5mV
Output150mV (line)
Speaker Load Impedance8Ω (minimum)

Summary

Important Safety and Operating Instructions

Operating and Safety Precautions

Covers essential safety rules for operation, installation, and maintenance to prevent hazards.

Connecting External Components

Connecting the Speakers

Instructions for connecting speaker wires, ensuring correct impedance and polarity for optimal sound.

Antenna and Power Outlet Connections

Connecting the FM Antenna

Instructions for selecting and connecting indoor T-type or outdoor FM antennas for optimal signal.

Front Panel Controls and Functions

Power Switch and Indicators

Details the main power switch, indicator lights, and digital frequency display on the front panel.

Preset Tuning and Memory Functions

Explains how to store and recall FM/AM stations using the Memory and preset buttons.

Advanced Sound and Tuning Features

Computer Controlled Sound System (CCSS)

Details the CCSS for tone control and its frequency curve indicators and presets.

CCSS Tone Control Customization

CCSS Preset Buttons and Indicators

Describes how preset buttons activate CCSS effects like Loudness, Bass, Presence, Treble, and High Filter.

Listening to Program Sources

Listening to FM Broadcasts

Step-by-step guide for tuning and receiving FM radio stations, including mono/stereo settings.

Troubleshooting Guide

Audio Faults and Solutions

Addresses issues like no sound, hum, crackling, and speaker problems with corresponding causes and cures.

FM Reception Issues

Troubleshoots noisy stereo reception, flickering indicators, distortion, and tuning problems.

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