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IC-2A
Maintenance manual
Icom Ic-2A Maintenance Manual
144mhz fm
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Also See for Ic-2A
:
Maintenance manual
(57 pages)
,
Instruction manual
(32 pages)
,
Manual
(12 pages)
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Table Of Contents
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Specifications
General
Transmitter
Operating Controls
Top Panel
Front Panel
Antenna Connector
Transmit/Battery Indicator
Squelch Control
External MIC Jack
Circuit Description
Receiver Circuits
Antenna Switching Circuit
RF Amplifier and First Mixer
Transmitter Circuits
MIC Amplifier Circuit
Multiplier and Driver Circuits
Power Amplifier Circuit
Programmable Divider Circuit
Reference Frequency Generator Circuit
Phase Detector and Loop Filter Circuits
VCO Circuit
Two-Tone Encoder Circuit
LED Indicator Circuit
Block Diagram
Inside Views
Main Unit Side
PLL Unit Side
Mechanical Parts and Disassembly
Disassembly of the Cases
Disassembly of Units
Top Panel Construction and Part Names
Vol/Sql Controls and BNC Connector Assembly
PTT Spring Assembly
Unit Bottom Assembly
How to Replace Contact Spring
Maintenance and Adjustment
Measuring Instruments Required for Adjustment
Preliminary Checks
Transmitter Output Checks
Receiver Checks
Preparation and Procedure before Servicing
How to Check
Receive
Modulation
Pll
BCD Chart
Basic Alignment Procedure
PLL Circuit
Lock Adjustment
PLL lo Frequency Adjustment
Power Adjustment
High Power
Low Power
Modulation Adjustment
Modulation Check
Spurious Transmission
LO Output Adjustment
RF if DET Coil Adjustment
2Nd lo Frequency Check
Receive Audio Output
Board Layout
Main Unit
PLL Unit
EF Unit
Switch Board
VR Board
Battery Contact Board
Touch Tone Unit
Voltage Charts
Transistors Voltage Chart
IC's Voltage Chart
In Transmit Mode
In Receive Mode
IC-2E Main Unit Voltage Chart
IC-2E Main Unit Voltage Chart ( Transmit )
PLL Unit Voltage Chart
Troubleshooting
No Power on
Lock Failure
No Reception
No Transmit RF Power
IC Specifications
Maximum Ratings
Pin Connection
Phase Comparator
Oscillator and 10 Stage Divider
700Mw Amplifier
Parts List
Schematic Diagram
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1
Table of Contents
2
General
3
Specifications
4
Operating Controls
5
Block Diagram
6
Maintenance and Adjustment
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Instruction Manual
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Manual
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Ic-2e
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