31 of 34SI-TEX Marine Electronics - SP120C Color Autopilot
Troubleshooting - continued
SP120C Display will not change from MANUAL STEER mode.
Vessel speed may be below the set threshold, if USE RFU is set to NO.
Check speed setting in the SP120C settings
Vessel must be moving forward at or higher than that set speed.
SP120C does not follow a waypoint or route
Check GPS plotter waypoint or route is set to ‘go-to’ or activated.
Check GPS mode is selected on SP120C
Check alarm status of SP120C
Ensure that the GPS unit has the correct magnetic correction factor.
Check SP120C compass alignment and possible magnetic interference
No GPS Data Alarm
Check wiring of the GPS to the SP120C unit.
Check sentence in GPS unit for correct data output
(APA/APB/BOD & XTE)
Check route is set up or selected in the GPS unit
ChecklocationxattheGPSunit.
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