51
9
TROUBLESHOOTING
8
9
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. 8
p. 8
—
• Set squelch 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. 48• Check 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. 6,
7, 52, 53
p. 8
• 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. 13
No beeps. • Beep tones are turned OFF.
• The squelch is open.
• Turn the beep tone ON in Set mode.
• Set squelch to the threshold point.
p. 46
p. 8
Distress call cannot be
transmitted.
• MMSI (DSC self ID) code is not pro-
grammed.
• Program the MMSI (DSC self ID) code. p. 14
!IC-M421-3.qxd 06.5.26 1:44 PM Page 51 (1,1)
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