Furuno FM-3000 Telephone User Manual


 
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 programmed. 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