Furuno MARINE VHF RADIOTELEPHONE FM-3000 - Manual (Page 56)

9. Troubleshooting
47
PROBLEM POSSIBLE CAUSE SOLUTION REF.
No power comes ON. • Bad connection to the power supply. • Check the connection to the transceiver. p. 42
No sound comes from
the speaker. • Squelch level is too high.
• Volume level is too low.
• Speaker has been exposed to water.
• Internal speaker is turned OFF. • Set squelch to the threshold point.
• Set [VOL] to a suitable level.
• Drain water from the speaker.
• Turn the internal speaker ON in Set mode. p. 7
p. 7
—
p. 39
Transmitting is impossi-
ble, or high power can
er can
-
not be selected.
• Some channels are for low power or re-
ceive only.
• The output power is set to low.
• Change channels.
• Push [HI/LO] to select high power.
pgs.
5, 48
p. 7
Scan does not start. • ‘TAG’ channel is not prog rammed. • Set the desired channels as ‘TAG’ chan-
nels.
p. 12
No beep sounds. • Beep tone is turned OFF.
• The squelch is open. • Turn the beep tone ON in Set mode.
• Set squelch to the threshold point. p. 39
p. 7
Receive signal cannot
be understood. • Optional voice scrambler is turned OFF.
• Scramble code is not set correctly. • Turn the optional voice scrambler ON.
• Reset the scramble code. p. 9
p. 40
Sensitivity is low. • The attenuator is activated. • Push [LO/DX] to turn the function OFF. p. 7
Distress call cannot be
transmitted. • MMSI (DSC self ID) code is not pro-
grammed.
• Program the MMSI (DSC self ID) code. p. 13