13. Troubleshooting
Problem Possible causes Solution Rifer.
Device doesn’t turn
on
Power supply is not correctly
connected
Verify that power supply is
properly connected
4.7.a
The protection fuse has shorted
(located on the power cable)
Verify the cause of the
problem and substitute the
fuse
-
Device turns on,
but doesn’t receive
signals
Antenna is not correctly connected Verify that antenna is
properly connected
4.7.c
Volume level is too low Adjust volume level 5.2
Squelch level is too high Adjust squelch level 5.3
Unable to contact
another party
Incorrect marine channel selected Verify channel and, if
necessary, change channel
5.4
Other party has
difculty in hearing
you
Distance is too far and low
transmission power (LO) was
accidentally selected
Select high transmission
power (HI) 5.6
Reception is broken
and/or disturbed
Squelch level is too high Adjust squelch level 5.3
Signal is too weak (other party is
too far away and/or antenna is
blocked by obstacles)
Try to completely open the
squelch and/or move closer
to the other party
5.3
Other users are using the same
radio channel
Verify radio trafc on desired
channel and, if necessary,
change channel
5.4
Other interference devices
(televisions, computers,
transceivers, etc.) too close to
NEPTUNE 100
Move other interference
devices further from
NEPTUNE 100
-
Impossible to
transmit or use high
transmission power
Some channels operate only on
low power or are only for reception
Tune to another channel
5.4
DSC, MMSI or ATIS
functions unusable
Individual MMSI and/or ATIS codes
have not been programmed
Program the codes 10.9
10.10
Vessel battery runs
down sooner than
expected
Excessive use of transmission Try to reduce transmission
times and/or use low
transmission power
5.6
Scanning and/or
Dual/Triple Watch
malfunctioning
Squelch has not been correctly
adjusted
Adjust squelch level
5.3
