INTRODUCTION
This service manual describes the latest technical
information for the IC-M220/IC-M220G VHF MARINE
TRANSCEIVERS at the time of publication.
MODEL VERSION
VERSION
NUMBER
GPS
IC-M220
USA #11
–
EXP #13
IC-M220G USA #21
✔
To upgrade quality, any electrical or mechanical parts and
internal circuits are subject to change without notice or
obligation.
SERVICE CAUTION
NEVER connect the transceiver to a DC power supply
that uses more than the specified voltage. This will
ruin the transceiver.
DO NOT reverse the polarities of the power supply
when directly applying power to the transceiver/circuit.
DO NOT apply an RF signal of more than 20 dBm
(100 mW) to the antenna connector. This could
damage the transceiver’s front-end.
ORDERING PARTS
Be sure to include the following four points when
ordering replacement parts:
1. 10-digit Icom part number
2. Component name
3. Equipment model name and unit name
4. Quantity required
<ORDER EXAMPLE>
1110010000 AT1846S IC-M220 MAIN UNIT 5 pieces
8930100330 4048 IC CLIP IC-M220 CHASSIS 1 piece
Addresses are provided on the inside back cover for
your convenience.
REPAIR NOTES
1. Make sure that the problem is internal before
disassembling the transceiver.
2. DO NOT open the transceiver until the transceiver
is disconnected from its power source.
3. DO NOT short any circuits or electronic parts.
4. DO NOT keep power ON for a long time when the
transceiver is defective.
5. NEVER directly transmit power into any test
equipment such as Standard Signal Generator or
a Sweep Generator, otherwise the RF power may
damage them.
6. ALWAYS connect a 40 dB attenuator between the
transceiver and such test equipment.
7. READ the instructions of the test equipment
thoroughly before connecting it to the transceiver.
8. If the front panel and chassis are separated and
reassembled, waterproof performance will not be
guaranteed unless the specified waterproof check
is performed.
Icom, Icom Inc. and the Icom logo are registered trademarks of Icom Incorporated (Japan) in Japan, the United States, the
United Kingdom, Germany, France, Spain, Russia, Australia, New Zealand, and/or other countries.
IC-M220/IC-M220G
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