ComNav 2001 Autopilot System
P/N 29010017 V1.0 - 59-
ERROR CHECKING
The autopilot will display an error message and sound the alarm when any of the following conditions
exist:
- The vessel has fallen more than 20 degrees
off course and has remained off course for
more than 30 seconds. This indicates a
possible failure of the rudder follower, or more
likely, the power steering system. Check for
an inoperative motor drive, blown breaker to
the motor, jammed four-way-valves, etc..
Faulty Compass Data Error
- The computer is receiving data which cannot
be true heading information from the compass
interface circuit board. The autopilot is
operable in non-autopilot modes only.
Faulty Data from Nav. Device Error
- One or more of the alarm flags in the data
sentence from the Nav. Device are set. The
autopilot will continue to use the data, but will
sound the alarm and display this error message
after every data sentence received until the
error flags are cleared. Extreme caution should
be used if the autopilot is left in the NAV
mode.
- One or more of the keys on the front panel is
stuck in the closed position. The autopilot can
be used by pressing ALARM CLEAR,
however, some functions may not work
properly. The remote controls should operate
normally. The front panel should be replaced.
- If the test of the permanent memory
indicated that one or more of the bytes of data
stored were not correct but the RAM memory
chip passed the memory test, a number of
controls are reset to pre-determined values.
These include the RUDDER, COUNTER
RUDDER, YAW, and TURN RATE controls.
The function of the autopilot is not impaired.
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