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QUAD FM3 Service Manual

QUAD FM3
20 pages
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QUAD FM3 Specifications

General IconGeneral
TypeFM Tuner
Frequency Range88 - 108 MHz
Signal to Noise Ratio70dB
Weight3.5 kg
Output775 mV
Distortion0.3%
Frequency Response30 Hz - 15 kHz (+/- 1 dB)
Stereo Separation40dB
Power Supply240 V AC, 50 Hz

Summary

Alignment Procedure - 1

General Alignment Guidelines

General guidelines for achieving specified performance during alignment.

Equipment Required for Alignment

List of necessary test equipment for the alignment procedure.

Ceramic Filter Coding

Details on color coding of ceramic filters for identification.

HT Voltage Adjustment

Information on adjusting HT voltage on earlier models.

IF Alignment - Before Serial No. 10,000

IF alignment steps for units prior to serial number 10,000.

IF Alignment - Serial No. 10,000 Onwards

IF alignment steps for units from serial number 10,000 onwards.

RF Circuit Alignment - Before Serial No. 10,000

RF circuit alignment for units prior to serial number 10,000.

RF Circuit Alignment - Serial No. 10,000 Onwards

RF circuit alignment for units from serial number 10,000 onwards.

Noise Sensing Coil L4 Adjustment

Procedure for adjusting the noise sensing coil L4.

Decoder Alignment - Before Serial No. 5885

Decoder alignment steps for units prior to serial number 5885.

Decoder Alignment - Serial No. 5885 Onwards

Decoder alignment steps for units from serial number 5885 onwards.

Alignment Procedure - 2 Using Sound Technology 1000 Test Equipment

Part 1: RF Alignment

Setup and connections for the first part of Alignment Procedure 2.

Part 2: Discriminator Alignment

Discriminator alignment procedures and control settings.

Part 3: Decoder Alignment

Decoder alignment procedures and signal checks.

Modifications

RF Board Modifications

Modifications made to the RF board across different serial number ranges.

Instructions for Replacing Drive Cord

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