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IC-77
Service manual
Icom IC-77 Service Manual
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Also See for IC-77
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Instruction manual
(25 pages)
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Instruction manual
(25 pages)
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Table Of Contents
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Contents
Table of Contents
Bookmarks
Table of Contents
Introduction
Ordering Parts
Danger
Repair Notes
Table of Contents
Specifications
Disassembly Instructions
To Remove the Front Panel
Remove Flat Cables
Inside Views
PLL, PA and Filter Units
Main Unit
Circuit Description
Receiver Circuits
RF Switching/Rf Switching Circuit
Preamplifier/1St Mixer Circuit
1St/2Nd if Circuit
2Nd Mixer Circuit
Noise Blanker Circuit
BFO Circuit/Bfo Frequency in each Mode
SSB/CW Demodulator Circuits
AM Demodulator/Agc Circuits
AF Input Mode Selector Switch
S-Meter/Squelch Circuit
AF Amplifier Circuit
Transmitter Circuits
Microphone Amplifier Circuit
CW Keying Circuit
RF Circuit
Low-Pass Filter Circuit
ALC Circuit
APC Circuit
Temperature Protection Circuit
RF Meter/Pll Circuit
Frequency Construction
General Description/1St lo Circuit
Reference Oscillator/Logic Circuit
Band Selection Data
RIT Control
Cpu/Input Port Allocations
Output Ports
Key Matrix
Regulator Circuits
Adjustment Procedures
Preparation before Servicing
Required Test Equipment
Connection
PLL Adjustment
Receiver Adjustment
PLL Unit
Main and VR Units
Transmitter Adjustment
PA and Filter Units
Parts List
MIC Board
Sensor Board
PA Unit
Filter Unit
Mechanical Parts
Front, Cabinet Parts and Accessories
Chassis Parts
Board Layouts
Front, VR and Jack Units
Front Unit
VR Unit
Jack Unit
Block Diagram
Voltage Diagram
Main, PA and Filter Units
PLL and Front Units
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Pll, Pa and Filter Units
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Transmitter Adjustment
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Main, Pa and Filter Units
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Instruction Manual
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