Icom IC-M72 Service Manual page 14
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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• CONNECTION
AC millivoltmeter
Audio generator
to RS-232C port
to USB port
PC
SINAD meter
Speaker (8 Ω)
OPC-478 (RS-232C type)
OPC-478U (USB type)
To CLONE line
(BLACK)
To SP line
(RED)
OPC-478/U
To MIC line
(WHITE)
JIG cable
OPC-1028
IC-M72
To SINAD meter/speaker
To audio generator/AC millivoltmeter
33 k
(MIC line)
RED (AFOUT)
(SP line)
BLACK (EXDET)
(CLONE line)
5 - 2
Standard signal generator
0.1 µV to 32 mV
(–127 dBm to –17 dBm)
DO NOT transmit while
an SSG is connected to
the antenna connector.
Attenuator
30 dB or more
RF power meter
0.1–10 W/50 Ω
Frequency
counter
Ω
PTT
WHITE (EXTMIC)
OPC-1028
SHIELD (SPG)
FM
deviation meter
- 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