Furuno FM-3000 manual Troubleshooting, Problem Possible Cause Solution

9. Troubleshooting

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

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