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Icom IC-M220 Service Manual

Icom IC-M220
33 pages
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SERVICE
MANUAL
S-15506XZ-C1
October 2018
VHF MARINE TRANSCEIVERS
|M220
|M220G

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Icom IC-M220 Specifications

General IconGeneral
BrandIcom
ModelIC-M220
CategoryTransceiver
LanguageEnglish

Summary

Introduction

Service Caution

Critical safety warnings for operating and handling the transceiver.

Ordering Parts

Part Ordering Information

Details required information for ordering replacement parts.

Repair Notes

Pre-Disassembly Precautions

Lists important notes before disassembling the transceiver.

Specifications

General Specifications

Covers frequency, power, dimensions, and environmental details.

Transmitter Specifications

Details output power, modulation, deviation, and audio characteristics.

Receiver Specifications

Outlines sensitivity, squelch, selectivity, and audio performance.

GPS Receiver Specifications

Lists frequency, channels, and satellite systems for GPS.

Inside Views

Main Unit Views

Covers both top and bottom views of the main unit board.

Logic Unit Views

Covers both top and bottom views of the logic unit board.

Disassembly Instructions

Removing the Front Panel

Details the steps to detach the front panel from the transceiver case.

Removing the Logic Unit

Outlines the procedure for removing the logic unit from the front panel.

Removing the Main Unit

Describes the process for detaching the main unit from the chassis.

Adjustment Procedure

Preparation for Adjustments

Lists required equipment and connection diagrams for adjustments.

Jig Cable and Utility

Details the jig cable setup and the software interface for adjustments.

Frequency Adjustments

Details procedures for adjusting radio frequencies.

Receive Adjustments

Covers sensitivity, squelch, audio, and power adjustments for reception.

Bit Error Ratio Adjustment

Describes the procedure for adjusting the bit error ratio.

Transmit Adjustments

Covers output power, power consumption, spurious emissions, deviation, and sensitivity.

Parts List

Main Unit Parts

Lists all replaceable parts for the main unit with part numbers and descriptions.

Logic Unit Parts

Lists all replaceable parts for the logic unit with part numbers and descriptions.

MIC-JACK Unit Parts

Lists all replaceable parts for the MIC-JACK unit with part numbers and descriptions.

GPS-ANT Unit Parts

Lists all replaceable parts for the GPS-ANT unit with part numbers and descriptions.

Mechanical Parts

Chassis Unit Mechanical Parts

Lists mechanical components for the chassis unit.

Mic-Jack Unit Mechanical Parts

Lists mechanical components for the mic-jack unit.

GPS-ANT Unit Mechanical Parts

Lists mechanical components for the GPS-ANT unit.

Main Unit Mechanical Parts

Lists mechanical components for the main unit.

Accessories

Lists optional accessories and kits.

Front Unit Mechanical Parts

Lists mechanical components for the front unit.

Logic Unit Mechanical Parts

Lists mechanical components for the logic unit.

Board Layouts

Main Unit Top Board Layout

Shows the component layout for the top side of the main unit PCB.

Main Unit Bottom Board Layout

Shows the component layout for the bottom side of the main unit PCB.

Logic Unit Top Board Layout

Displays the component layout for the top side of the logic unit PCB.

Logic Unit Bottom Board Layout

Shows the component layout for the bottom side of the logic unit PCB.

Mic-Jack Unit Top Board Layout

Displays the component layout for the top side of the mic-jack unit PCB.

Mic-Jack Unit Bottom Board Layout

Shows the component layout for the bottom side of the mic-jack unit PCB.

GPS-ANT Unit Top Board Layout

Shows the component layout for the top side of the GPS-ANT unit PCB.

GPS-ANT Unit Bottom Board Layout

Shows the component layout for the bottom side of the GPS-ANT unit PCB.

Block Diagram

System Block Diagram

Illustrates the overall system architecture and signal flow.

Voltage Diagram

Main Unit Voltage Diagram

Shows the voltage distribution and lines within the main unit.

Logic Unit Voltage Diagram

Illustrates voltage distribution and lines within the logic unit.

Mic-Jack Unit Voltage Diagram

Shows voltage distribution and lines for the mic-jack unit.

GPS-ANT Unit Voltage Diagram

Illustrates voltage distribution and lines for the GPS-ANT unit.

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