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Chapter 3: Maintenance & Fault Finding 29
3 Maintenance & Fault Finding
SYMPTOM SOLUTION
The autopilot display is blank. No power – check the fuse/circuit
breaker.
The displayed compass heading does
not agree with the boat’s compass.
The compass has not been corrected for
deviation – carry out the deviation and
alignment procedures (see page 56).
Boat turns slowly and takes a long
time to come on to course.
Rudder gain too low (see page 58).
Boat overshoots when turning on to
a new course.
Rudder gain too high (see page 58).
The autopilot appears to be unstable
on Northerly headings in the
Northern hemisphere (or Southerly
headings in the Southern
hemisphere).
Northerly/Southerly heading correction
not set up (see page 65).
Display shows ‘CAL OFF’ when
entering calibration.
Calibration access has been prevented
(see page 66).
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.
The screen shows a series of rotating
dashes.
Compass deviation correction is running.
The display shows a series of
stationary dashes.
Data is not being received – check the
cabling.
The display shows ‘Err’. The navigator has lost its fix – refer to the
navigator handbook for further action.
81130_3.book Page 29 Wednesday, July 25, 2001 11:57 AM