Icom IC-M72 Service Manual page 2
Vhf marine transceiver
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Also See for IC-M72:
- Instruction manual (40 pages) ,
- Instruction manual (40 pages) ,
- Instruction manual (20 pages)
Table of Contents
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INTRODUCTION
This service manual describes the latest service information
for the IC-M72 VHF MARINE TRANSCEIVER at the time of
publication.
Version
Symbol
Scramble
USA
U.S.A
USA-1
SEA
South-
east Asia
SEA-1
AUS
Australia
AUS-1
To upgrade quality, any electrical or mechanical parts
and internal circuits are subject to change without
notice or obligation.
DANGER
NEVER connect the transceiver to an AC outlet or to a DC
power supply that uses more than 10 V. This will ruin the
transceiver.
DO NOT reverse the polarities of the power supply when
connecting the transceiver.
DO NOT apply an RF signal of more than 20 dBm (100 mW)
to the antenna connector. This could damage the trans-
ceiver's front end.
ORDERING PARTS
Be sure to include the following four points when ordering
replacement parts:
1. 10-digit order numbers
2. Component part number and name
3. Equipment model name and unit name
4. Quantity required
<SAMPLE ORDER>
1110001811 S.IC TA7368FG IC-M72 Main unit 5 pieces
8930068440 2905 Keyboard IC-M72 Chassis 10 pieces
Addresses are provided on the inside back cover for your
convenience.
1. Make sure a 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 force any of the variable components. Turn them slowly and smoothly.
4. DO NOT short any circuits or electronic parts. An insulated turning tool MUST be used for all adjustments.
5. DO NOT keep power ON for a long time when the transceiver is defective.
6. DO NOT transmit power into a signal generator or a sweep generator.
7. ALWAYS connect a 40 dB to 50 dB attenuator between the transceiver and a deviation meter or spectrum analyzer when
using such test equipment.
8. READ the instructions of test equipment thoroughly before connecting equipment to the transceiver.
Icom, Icom Inc. and
Kingdom, Germany, France, Spain, Russia and/or other countries.
AC adapter TX Power
None
BC-147A
Yes
None
BC-147E
Yes
None
BM-95V
Yes
logo are registered trademarks of Icom Incorporated (Japan) in the United States, the United
6 W
5 W
REPAIR NOTES
- Quick Links:
- Parts List
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Table of Contents
Need help?
Do you have a question about the IC-M72 and is the answer not in the manual?
Questions and answers
Sound does not work
The sound might not work on the Icom IC-M72 due to the following reasons:
1. Squelch Level: The squelch level may be set too high, which blocks audio. Adjust it by pushing the appropriate buttons (`[ ]`, `[Y]`/`[Z]`) to lower the squelch level.
2. Volume Setting: The volume may be set too low. Rotate the `[VOL]` knob to increase the volume.
3. Signal Reception: Ensure the radio is receiving a signal. The " " indicator should appear when a signal is being received, and audio should emit from the speaker.
4. Speaker Issue: Check if the speaker is functioning properly. If the external speaker or audio output is faulty, repair or replacement may be needed.
5. Incorrect Channel: Verify that the correct channel is selected, as some channels may not have active transmissions.
If these adjustments do not resolve the issue, further inspection or servicing may be required.
This answer is automatically generated