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APPENDIX А. Troubleshooting
Fault
Possible reasons and solution
The LED does not signal after
the Device is turned on
1. No power supply on the bus.
Check if the bus power is supplied
(NMEA 2000 network requires a separate power connection
and can not be powered by a plotter or another Device connected
to the network).
2. Loose connection in the power supply circuit.
Treat the Device
connector with a spray for cleaning electrical contacts. Plug the Device
into another connector.
The Device LED flashes, but
the Device is not displayed
in the list of external devices
on the plotter, data do not
appear, a series of six LED
signals not observed within a
minute after switching on the
Device and the plotter
1. Loose connection in the data circuit.
Treat the Device connector
with a spray for cleaning electrical contacts. Plug the Device into another
connector.
2. There are problems in the NMEA 2000 network.
The network
segment is not connected to the plotter or there are missing terminators
in the network. Plug another device into the selected connector
and make sure it appears in the list of devices on the plotter
Sensor readings are not
accurate
1. Sensor is under direct sunlight or was heated.
Please,
see chapter II and III of this manual.
2. Sea salt is on sensor.
Sensor requires cleaning, see chapter II
for details.
Data
readings
flash
on instruments, LED is lit
for one second or more
from time to time
1. Electromagnetic interference.
Remove sensor cable from power
cables.
Constant signal of LED,
no data available
1. Sensor or sensor cable are damaged.
Check the sensor cable.
