Operating Instructions and Installation Instructions

ComNav Navigator G2 Installation & Operation Appendices
Document PN 29010081 V1.1 - 47 -
Appendix 1
Troubleshooting
This section lists many of the common problems which you may encounter while installing
and operating your Vector Series Navigator system. It also identifies potential causes and
how to use the diagnostic indicators to narrow down the source of the problem.
Symptom Possible Cause
Power LED Off
• Ship Power not connected
• Ship Power Breaker OFF
• Ship Power polarity (B+,B-) are reversed.
No Display Head Power
• GPS Switched Power is Off. Press the Display Head
On/Off switch. Switch Power LED will light and Display
Head will become active.
• V+ or GND not wired correctly to Display Head
Terminal
Blank LCD after power on
• Voltage is too low
No NMEA Messages
Transmitted to External
device
• GPS Switched Power is Off. Press the Display Head
On/Off switch. Switch Power LED will light and Display
Head will become active.
• RS232 communications LEDs (Port A or Port B) DO
NOT flash. No Vector data is being received. Check
wiring from GPS Compass to Distribution Unit. Verify
that Vector is configured to send messages on the
desired Port.
• RS232 communications LEDs (Port A or Port B) flash.
Data is being received from the Vector. Check wiring
from Distribution Unit to the external NMEA device.
No Values are being
displayed.
• The GPS has not acquired enough satellites for a
solution. It may take one minute or longer for the GPS
to acquire enough satellites.
• No NMEA messages are configured to transmit from
the GPS on Port A. Check the Setup Page “Port A-
NMEA”. A message rate of “0.0” means that the
message is not being transmitted.
• RS232A TX connection from the GPS compass is not
connected. Check the Indicator Light on the
Distribution Unit.
Not all data Values are
Displayed.
• The GPS has not acquired enough satellites for all
Values. It may take one minute or longer for the GPS
to acquire enough satellites to display all data Values.
Normally, UTC Time is the first Value to be acquired
and transmitted once the GPS is receiving satellite
signals.
• No NMEA message, containing this data value, is
being transmitted from the GPS on Port A.
COG (Course Over
Ground) ball is not
displayed on the
Navigation Graphics page
• SOG (Speed Over Ground) is too slow. When the
vessel begins to move, the COG ball will be displayed.
• No NMEA message being transmitted on Port A, which
contains COG (also called Track Made Good).
• RS232A TX connection from the GPS compass is not
connected.
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