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ENGLISH
13 TROUBLESHOOTING
Problem Possibile 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 pro-
blem 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 neces-
sary, change channel
5.4
Other party has diffi-
culty 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 traffic on desired
channel and, if necessary,
change channel
5.4
Other interference devices
(televisions, computers,
transceivers, etc.) too close to
NEPTUNE
Move other interference devi-
ces further from NEPTUNE
-
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 MMIS and/or ATIS
codes have not been pro-
grammed
Program the codes 10.10
10.11
Vessel battery runs
down sooner than
expected
Excessive use of transmission Try to reduce transmission ti-
mes and/or use low transmis-
sion power
5.6
Scanning and/or
Dual/Triple Watch
malfunctioning
Squelch has not been cor-
rectly adjusted
Adjust squelch level 5.3
30


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