Icom IC-2A Manuals

Manuals and User Guides for Icom IC-2A. We have 5 Icom IC-2A manuals available for free PDF download: Maintenance Manual, Instruction Manual, Manual

Icom IC-2A Maintenance Manual (58 pages)

144MHz fm

Brand: Icom | Category: Transceiver | Size: 7.92 MB

Table of Contents
2
Specifications
3
General
3
Transmitter
3
Operating Controls
4
Top Panel
4
Front Panel
4
Antenna Connector
5
Transmit/Battery Indicator
5
Squelch Control
5
External MIC Jack
5
Circuit Description
7
Receiver Circuits
7
Antenna Switching Circuit
7
RF Amplifier and First Mixer
7
Transmitter Circuits
8
MIC Amplifier Circuit
8
Multiplier and Driver Circuits
8
Power Amplifier Circuit
8
Programmable Divider Circuit
9
Reference Frequency Generator Circuit
9
Phase Detector and Loop Filter Circuits
9
VCO Circuit
9
Two-Tone Encoder Circuit
10
LED Indicator Circuit
10
Block Diagram
11
Inside Views
12
Main Unit Side
12
PLL Unit Side
12
Mechanical Parts and Disassembly
13
Disassembly of the Cases
13
Disassembly of Units
14
Top Panel Construction and Part Names
15
Vol/Sql Controls and BNC Connector Assembly
15
PTT Spring Assembly
16
Unit Bottom Assembly
16
How to Replace Contact Spring
16
Maintenance and Adjustment
17
Measuring Instruments Required for Adjustment
17
Preliminary Checks
18
Transmitter Output Checks
18
Receiver Checks
18
Preparation and Procedure before Servicing
18
How to Check
19
Receive
19
Modulation
20
Pll
21
BCD Chart
21
Basic Alignment Procedure
22
PLL Circuit
22
Lock Adjustment
22
PLL lo Frequency Adjustment
22
Power Adjustment
23
High Power
23
Low Power
23
Modulation Adjustment
24
Modulation Check
24
Spurious Transmission
24
LO Output Adjustment
25
RF if DET Coil Adjustment
25
2Nd lo Frequency Check
25
Receive Audio Output
25
Board Layout
26
Main Unit
26
PLL Unit
27
EF Unit
28
Switch Board
28
VR Board
28
Battery Contact Board
28
Touch Tone Unit
29
Voltage Charts
30
Transistors Voltage Chart
30
IC's Voltage Chart
31
In Transmit Mode
31
In Receive Mode
31
IC-2E Main Unit Voltage Chart
32
IC-2E Main Unit Voltage Chart ( Transmit )
34
PLL Unit Voltage Chart
40
Troubleshooting
44
No Power on
44
Lock Failure
45
No Reception
46
No Transmit RF Power
47
IC Specifications
48
Maximum Ratings
48
Pin Connection
48
Phase Comparator
50
Oscillator and 10 Stage Divider
50
700Mw Amplifier
50
Parts List
51
Schematic Diagram
55

Icom IC-2A Maintenance Manual (57 pages)

144MHz FM Transceiver

Brand: Icom | Category: Transceiver | Size: 5.21 MB

Icom IC-2A Instruction Manual (32 pages)

144MHz

Brand: Icom | Category: Transceiver | Size: 3.24 MB

Icom IC-2A Instruction Manual (32 pages)

144MHz FM

Brand: Icom | Category: Transceiver | Size: 3.29 MB

Icom IC-2A Manual (12 pages)

VHF 2W HT

Brand: Icom | Category: Radio | Size: 0.72 MB

Icom Categories

Transceiver Receiver Repeater Radio Two-Way Radio

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