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Adcom GFA-565 Service Manual

Adcom GFA-565
21 pages
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Adcom GFA-565 Specifications

General IconGeneral
BrandAdcom
ModelGFA-565
CategoryAmplifier
LanguageEnglish

Summary

Introduction

Circuit Description

Explains the amplifier's monaural design, output stage, and signal amplification stages.

Test Procedures

Bias Alignment

Details the step-by-step process for adjusting the amplifier's bias control for optimal performance.

Service Parts List

Audio Input/Driver PCB Assembly

Lists all components and part numbers for the audio input and driver printed circuit board.

Left Output PCB Assemblies

Details components and part numbers for the left channel output printed circuit boards.

Right Output PCB Assemblies

Lists components and part numbers for the right channel output printed circuit boards.

Filter Capacitor PCB Assemblies

Details components and part numbers for the filter capacitor printed circuit boards.

AC Input/Bias Time-Delay

Lists components and part numbers for the AC input and bias time-delay circuitry.

Chassis-Mounted Components

Lists components that are mounted directly to the amplifier chassis, such as switches and transformers.

Front Panel Assembly

Components list for the front panel, including LEDs and indicators.

Packing and Accessories

Details carton, styrofoam filler, and pads used for packing and shipping the amplifier.

Power Supply PCB Assembly - Optional Fan Motor (Issue A)

Lists components for the optional fan motor power supply PCB, issue 'A'.

Power Supply PCB Assemblies - Optional Fan Motor (Issue B)

Lists components for the optional fan motor power supply PCB, issue 'B'.

Optional Balanced Input PCB Assembly

Lists components for the optional balanced input printed circuit board.

Typical Performance Data

Specifications

General

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