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Fisher 220T User Manual

Fisher 220T
12 pages
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Fisher 220T Specifications

General IconGeneral
Frequency Response20Hz to 20kHz
Total Harmonic Distortion0.5%
Tuning RangeFM, MW
Signal to Noise Ratio70dB
Speaker Load Impedance4-16 ohms

Summary

Test Equipment Required

Precautions for Servicing

Service Procedures - Mechanical and Maintenance

Dial Stringing

Procedure for correctly routing the dial cord for tuning mechanism.

Lamp Replacement

Steps to replace tuning meter, stereo beacon, and dial lamps.

Cleaning Procedures

Methods for cleaning the dial glass and front panel.

Radio Alignment and Testing Procedures

Multiplex Alignment and Tests

Procedures for multiplex alignment, stereo beacon, and distortion/power tests.

FM Radio Alignment and Adjustment

FM Front End Alignment

Steps for aligning the FM receiver front end stages.

FM IF Alignment

Procedure for aligning the FM Intermediate Frequency amplifier.

FM Tuning Meter Calibration

Steps to calibrate the FM tuning indicator meter.

FM Muting Adjustment

Procedure to adjust the FM muting sensitivity.

AM Radio Alignment and Adjustment

AM Front End Alignment

Steps for aligning the AM receiver front end stages.

AM IF Alignment

Procedure for aligning the AM Intermediate Frequency amplifier.

Amplifier Output Adjustment

Predriver/Driver Output Adjustment

Procedure to adjust the bias for the predriver/driver stages.

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