Raymarine ST3000 Owner's Handbook Manual page 36

Chapter 3: Maintenance & Fault Finding
SYMPTOM
The autopilot display is blank.
The displayed compass heading does
not agree with the boat's compass.
Drive unit steers hard over as soon as
Auto is engaged
Boat turns slowly and takes a long
time to come on to course.
Boat overshoots when turning on to a
new course.
The autopilot appears to be unstable
on Northerly headings in Northern
hemisphere (or Southerly headings in
Southern hemisphere).
Display shows 'CAL OFF' when
entering calibration.
The autopilot will not 'talk' to other
SeaTalk instruments.
Position information not received.
The autopilot will not auto advance to
the next waypoint.
The autopilot will not display
Distance to Waypoint, Bearing to
Waypoint or Waypoint Number.
Drive slips under normal operating
conditions.
SOLUTION
No power – check the fuse/circuit breaker.
The compass has not been corrected for
deviation – carry out the deviation and
alignment procedures (see page 56).
Drive operating sense set incorrectly.
Refer to page 53.
Rudder gain too low (see page 59).
Rudder gain too high (see page 59).
Northerly/Southerly heading correction
not set up (see page 65).
Calibration access has been prevented
(see page 66).
Cabling problem – make sure all the
cables are connected properly.
Navigator not transmitting the correct
position data.
No bearing to waypoint information
received from the navigator.
Incorrect NMEA sentences transmitted
from position sensor. Refer to product
handbook for information about
information transmitted.
Return the drive to your nearest service
representative.
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