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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)
Summary of Contents for IC-M421
Page 1: ......
Page 42: ...re ush call or r Push ENT to transmit the polling request call to the se lected station ...
Page 61: ...55 12 TEMPLATE 11 12 Unit mm 164 78 149 61 6 ...
Page 62: ......
Page 63: ...57 28 3 14 2 111 2 60 6 Unit mm ...
Page 64: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan ...