Troubleshooting - Icom IC-M422 Instruction Manual

10

TROUBLESHOOTING

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