Garmin Software Version 0321.23 Manual Pagina 148

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Page 5-16 G1000 System Maintenance Manual – Diamond DA40/40F
Revision G 190-00545-01
5.5.1 General AFCS Troubleshooting
The following annunciations may appear in the AFCS Annunciation field:
Table 5-9. AFCS Annunciation Troubleshooting
Annunciation Condition Resolution
AFCS System
Failure
Ensure that the G1000 system is in proper working order. Check
specifically for proper operation of the:
GIA 63 Integrated Avionics Unit
GRS 77 AHRS
GDC 74A Air Data Computer
All GSA 81 Servos (Check AFCS Breaker IN)
Check that no red X’s are present on the MFD and PFD.
Check that no related alert messages are present on the PFD (press
the ALERTS softkey).
Go to the AUX SYSTEM STATUS page on the MFD and verify that
all LRUs have a ‘green’ check.
In Configuration mode, review the GFC 700 equipment status,
software, and certification gains.
Reload software, configuration, and certification gains to the GIAs
and GSA 81 servos.
Check the GFC Status page for additional GFC 700 system
information.
Review the fault and assert logs for the GIAs and servos (see
Section 5.5.3)
Isolate the fault to an LRU, airframe switch or wiring using the
information from the fault log. Contact Garmin Aviation Product
Support for assistance if needed..
Pitch Axis Failure
Check the AUX – SYSTEM STATUS page to see if the servo is
online (green check).
Check that the affected servo is receiving power.
Ensure the MET switches are not stuck.
Check the servo wiring and connector.
If failure condition still exists, remove and replace the affected servo.
Pitch Trim Axis
Failure
Roll Axis Failure
AHRS Monitor
Failure
If the AHRS inputs have been determined to be “unreasonable”
while the AP is engaged, in air, this message will be displayed until
AHRS inputs are determined reasonable for 5 seconds.
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