Icom IC-M422 Marine Radio User Manual


 
38
TROUBLESHOOTING
New2001New2001
10
PROBLEM POSSIBLE CAUSE SOLUTION REF.
No sound from speaker. Squelch level is too high.
Volume level is too low.
Speaker has been exposed to water.
p. 7
p. 7
Set [SQL] to the threshold point.
Set [VOL] to a suitable level.
Drain water from the speaker.
The transceiver does
not turn ON.
Bad connection to the power supply.
p. 35Check the connection to the transceiver.
Transmitting is impossi-
ble, or high power can
not be selected.
Some channels are for low power or re-
ceive only.
The output power is set to low.
pgs. 5,
6, 54
p. 7
Change channels.
Push [HI/LO] on the microphone to select
high power.
Scan does not start. TAG channel is not programmed. Set the desired channels as TAG channels. p. 11
No beeps. Beep tones are turned OFF.
The squelch is open.
Turn the beep tone ON in Set mode.
Set [SQL] to the threshold point.
p. 33
p. 7
Distress call cannot be
transmitted.
MMSI (DSC self ID) code is not pro-
grammed.
Program the MMSI (DSC self ID) code. p. 13
Sensitivity is low. The Attenuator is activated. Push [LO/DXIC] to turn the function OFF. p. 7
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