Troubleshooting - Icom IC-M421 Instruction Manual

PROBLEM
The transceiver does • Bad connection to the power supply.
not turn ON.
No sound from speaker. • Squelch level is too high.
• Volume level is too low.
• Speaker has been exposed to water.
Transmitting is impossi- • Some channels are for low power or re-
ble, or high power can ceive only.
not be selected. • The output power is set to low.
Scan does not start. • "TAG" channel is not programmed.
No beeps. • Beep tones are turned OFF.
• The squelch is open.
Distress call cannot be • MMSI (DSC self ID) code is not pro-
transmitted. grammed.
POSSIBLE CAUSE

TROUBLESHOOTING

SOLUTION
• Check the connection to the transceiver.
• Set squelch to the threshold point.
• Set [VOL] to a suitable level.
• Drain water from the speaker.
• Change channels.
• Push [HI/LO] on the microphone to select
high power.
• Set the desired channels as "TAG" channels. p. 13
• Turn the beep tone ON in Set mode.
• Set squelch to the threshold point.
• Program the MMSI (DSC self ID) code.
9
REF.
p. 48
p. 8
p. 8
—
pgs. 6,
7, 52, 53
p. 8
8
9
p. 46
p. 8
p. 14
51