Specifications

72 ST6000 Plus Autopilot Control Unit Owner,s Handbook
The autopilot will not “talk” to other SeaTalk instruments
Cabling problem  make sure all the cables are connected properly.
Position information not received
Navigator not transmitting the correct position data.
The autopilot will not auto advance to the next waypoint
No bearing to waypoint information received from the navigator.
A series of rotating dashes are displayed on screen
Compass deviation correction or dockside rudder calibration is
running.
The display shows a series of stationary dashes
Data is not being received  check the cabling.
The display shows NO DATA
The signals received from the navigator are too weak  refer to the
navigator handbook for further action.