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IC-4AT
Service manual
Icom IC-?4AT Service Manual
430/440 mhz
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Also See for IC-?4AT
:
Instruction manual
(40 pages)
,
Instruction manual
(40 pages)
,
Instruction manual
(41 pages)
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Table Of Contents
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Contents
Table of Contents
Bookmarks
Table of Contents
Assistance
Ordering Replacement Parts
Table of Contents
Specifications
Outside and Inside Views
Top View
Frequency Display
Front and Side Views
Rear and Bottom Views
Front Side Views
Bottom Inside Views
Front Inside View
Illustrated Appearance
Unit Location
Rear Inside Views
RF Unit
Block Diagram
Circuit Description
Receiver Circuits
Antenna Switching Circuit
RF Circuit
Transmitter Circuits
S-Meter Circuit
PLL Circuits
Buffer Amplifier Circuit
Dual Modulus Prescaler
Reference Oscillator Circuit
Loop Filter
VCO Circuit
Logic Circuits
CPU Port Allocations
Initial Matrix
Key Matrix
Meter Comparator
Power Saver Circuit
Hardware Configuration of Key Matrix
Lamp Circuit
Power Supply Circuits
Reduced Voltage Detecting Circuit
Other Circuits
Mechanical Parts and Disassembly
Front Panel Disassembly
Speaker Disassembly
Rear Case Disassembly
Top Panel Disassembly
Tone Unit/Tone Call Unit Disassembly
Maintenance and Adjustment
Preparation before Servicing
PLL Adjustment
Unit Locations
Receiver Adjustment
Transmitter Adjustment
Subaudible Tone, DTMF and Tone Call Adjustment
Board Layouts
Interconnections
Main Unit
RF Unit, RF Coil Unit, if Unit
VCO Unit
Tone and Tone Call Units
Voltage Diagrams
Parts List
Schematic Diagram
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See also:
Instruction Manual
Table of
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This manual is also suitable for:
Ic-?4a
Ic-?4e
Ic-m4at
Ic-m4a
Ic-m4e
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