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Teac A-400 Service Manual

Teac A-400
56 pages
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Teac A-400 Specifications

General IconGeneral
Track System4-track, 2-channel stereo
Tape Speed4.76 cm/s
Total Harmonic Distortion1.5%
Heads1 x record/playback
Motor1 x DC motor
Frequency Response30Hz to 16kHz
Tape TypeCrO2
Power Supply220V, 50Hz

Summary

Partial Dis-assembly of Main Parts

Head and Pinch Roller Replacement

Instructions for replacing the heads and pinch roller assembly.

Mechanical Checks and Adjustments

Pinch Roller Pressure Adjustment

Procedure to measure and adjust pinch roller pressure.

Tape Speed and Wow/Flutter Adjustment

Steps for adjusting tape speed and measuring wow/flutter.

Electrical Checks and Adjustments

Playback Performance Verification

Steps for verifying and adjusting playback performance, including azimuth and output levels.

Record Performance Calibration

Guide to adjusting bias, record level, and distortion for recording.

Trouble-shooting

Tape Transport Troubleshooting Guide

Diagnoses and possible cures for tape transport mechanism issues.

Amplifier Troubleshooting Guide

Diagnoses and possible cures for audio amplifier circuit problems.

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