Simrad AP50 User Manual Page 167

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Troubleshooting
20221032B 165
8 TROUBLESHOOTING
An autopilot is a complex system. Its performance dependents
on a proper installation and a successful sea trial.
In the event of an autopilot failure, the AP50’s numerous test
features that will assist you in isolating a probable fault.
Audible and visual alarm is provided for every fault being
detected.
The audible alarm is reset by pressing any button (e.g. by
changing mode from AUTO to STANDBY). All visual alarms
will remain and alternate with the operating display until the
fault has been rectified. If an external alarm buzzer is installed
(ref. page 88) the external alarm will be given 5 sec. after the
internal. Refer to the table below for hints to try to solve the
problem yourself. You may also consult your nearest Simrad
dealer for assistance, if required.
Perform any repair actions in the listed sequence.
Note ! ‘Compass difference’, ‘Vessel off course’, and ‘Rudder limit’
warnings are automatically reset when the error is rectified.
8.1 Warnings
Display readout Probable fault Recommended action
P00 M00 S000
SW V1R1
J300X
Simrad
If the J300X/J3000X
status display is shown
at switch on, the start-
up sequence will stop to
indicate that an invalid
junction unit is installed
Install the J50 Junction Unit.
System failure alarms:
Rudder feedback
failure (autopilot
operates on
simulated feedback
and the simulated
feedback angle is
shown in the
display)
Rudder feedback signal
is missing or erratic.
Analog rudder not
installed.
1. Check all connections.
2. Check the alignment as per the
installation instructions.
3. Replace rudder feedback unit.
4. Install analog rudder.
Flashing rudder
angle indicator
Rudder not selected
under the Steering
function.
Select Rudder under Steering
function in the User Set-up menu.
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