Technics SA-GX490

Technic
AV Control Stereo Receiver
SA-GX790/GX690
SA-GX490/GX 390/GX290
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Operating Instructions
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RQT2753-P

Technics SA-GX490 Specifications

General

Type	Stereo Receiver
Input Sensitivity MM	2.5mV
Signal to Noise Ratio MM	80dB
Tuning Range FM	87.5 to 108 MHz
Outputs	tape
Speaker Load Impedance	8Ω to 16Ω
Power Output	80 watts per channel into 8Ω (stereo)

Summary

Technics Receiver Operating Instructions

Precautions and Safety Guidelines

Safety Guidelines

Electrical safety, cord protection, and nonuse periods for the unit.

Installation Environment

Proper placement regarding water, heat, and temperature.

Placement and Ventilation

Ensure airflow, avoid foreign objects, and use level surfaces.

Maintenance and Service

Cleaning instructions and when to seek professional repair.

Front Panel Controls Overview

Basic Controls and Indicators

Power, volume, tuning, display, and input selectors.

Sound Adjustment Buttons

Tone, balance, loudness, muting, and headphone jack.

Special Feature Buttons

Surround, Dolby Pro Logic, SFC, Theater Effect, Test signal.

Equipment Connections Guide

Audio Equipment Interconnection

Connecting CD players, tape decks, and turntables to the unit.

Video Equipment Connections

Connecting VCRs and TV

Video input/output for VCRs and TV monitor.

Connecting Video CD Changer

Linking a video CD changer to the unit.

Antenna Connections

FM Antenna Setup

Connecting FM indoor and outdoor antennas.

AM Loop Antenna Setup

Connecting the AM loop antenna and mounting guidelines.

Basic Operations Guide

Power On and Speaker Setup

Source Selection and Playback

Radio Broadcast Tuning

Direct Access and Sequential Tuning

Dolby Pro Logic Surround Sound

Surround and 3 STEREO Modes

Center Mode Settings

Speaker Output Level Adjustment

Test Signal for Speaker Calibration

Using test signals to balance speaker output levels.

Recording Operations

Recording to Tape Deck

Recording to VCR 1 and from VCR 2

Troubleshooting Guide

FM and AM Broadcast Issues

Resolving common reception problems like noise and distortion.

General Operational Problems

Troubleshooting power, sound, overload, and error messages.