Furuno SC-50S Operator's Manual page 60

3. MAINTENANCE, TROUBLESHOOTING
Error Message
BATTERY ALM!
DATA ERR!
DGPS ERROR!
GPS DATA ERROR!
GPS NO FIX!
HDG ERROR!
NO HEADING OUTPUT!
RAM ERROR!
RATE ERROR(YAW)!
RATE ERROR(ROLL)!
RATE ERROR(PITCH)!
COMMUNICATION ERR!
WAAS ERROR
ROM ERROR!
*: Alarm port goes open when message appears.
3-10
Error messages (con't from previous page)
Meaning
Voltage of battery in processor
unit is low.
GPS data (from the GPS receiver
in the processor unit) is lost for
one minute. Heading output is
stopped and the heading
indication shows "- - -".
DGPS data (from external DGPS
receiver) is lost for one minute.
GPS data (from internal GPS
receiver) is lost for one minute.
Heading output is stopped and the
heading indication shows "- - -".
No GPS data.
Heading error
GPS heading error continues for
five* minutes. In this case the
heading indication shows "- -
-" and heading output is stopped.
* = default setting. May be
changed by "backup" setting.
RAM problem
Data output stopped.
Data output stopped.
Data output stopped.
Communication between display
unit and processor has been
interrupted.
WAAS data lost for one minute.
ROM problem
Remedy
Have battery replaced at
earliest convenience.
Check GPS receiver.
Ship may not be within DPGS
service area.
Conduct diagnostic test1 and
check if NG appears for results
for GPS receivers GPS1, GPS2
and GPS3.
Check antenna cable.
Request service.
Press any key to try to restore
normal operation.
Request service.
Request service.
Request service.
Request service.
Request service.
Request service.
Request service.