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67
10
TROUBLESHOOTING
9
10
PROBLEM
POSSIBLE CAUSE
SOLUTION
REF.
No sound comes from
the speaker.
• Squelch level is too high.
• Volume level is too low.
• Speaker has been exposed to water.
p. 8
p. 8
—
• 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. 58
• Check the connection to the transceiver.
Transmitting is impossi-
ble, or high power can-
not be selected.
• Some channels are programmed for low
power or receive only in regulations.
• The output power is set to low.
pp. 6, 7,
70
p. 8
• Change channels.
• Push
[H/L]
to select high power.
Scan does not start.
• TAG channel is not programmed.
• Set the desired channels as TAG channels.
p. 13
No beep sounds.
• Beep tones are turned OFF.
• The squelch is open.
• Turn the beep tone ON in Set mode.
• Set
[SQL]
to the threshold point.
p. 56
p. 8
Distress call cannot be
transmitted.
• MMSI (DSC self ID) code is not pro-
grammed.
• Program the MMSI (DSC self ID) code.
p. 15
Sensitivity is low.
• The Attenuator is activated.
• Push
[LO/DX•IC•SCRM]
to turn the function
OFF.
p. 8
Summary of Contents for IC-M504
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