Garmin G1000 NAV III Line Maintenance Manual page 112

•
PFT Step 9: Verify servo first certification data
This step checks to ensure the servos and the GIAs have the same certification gains.
Reload the certification gains to all GIAs and servos.
•
PFT Step 10: Verify servo second certification data
This step checks to ensure the servos and the GIAs have the same certification gains.
Reload the certification gains to all GIAs and servos.
•
PFT Step 11: Updating servo RTC
This step sets the servo system time to the GIA system time.
•
PFT Step 12: Verify servo PFT status
This step checks to ensure all servos have passed their own pre-flight test.
•
PFT Step 13: Verify AP disconnect enabled
This step checks to ensure GIA 1, GIA 2, and all servos are connected to the 28 volt autopilot disconnect.
Ensure the autopilot disconnect is connected to all GIAs and servos and is registering 28 volts.
Ensure the autopilot disconnect switch is not pressed.
•
PFT Step 14: Verify servo validity
This step checks to ensure all servos are online and communicating with valid data.
Ensure all servos are turned on and communicating.
•
PFT Step 15: Verify cross GIA PFT is completed
This step checks to ensure the cross-side GIA is also on step 14.
Cycle power on all servos and GIAs.
Ensure the PFD and MFD are turned on.
•
PFT Step 16: PFT completed
The pre-flight test is successfully completed.
•
PFT Step 17: PFT failed
The pre-flight test has failed.
2.11.2.2 Servo Faults and Troubleshooting
Whenever a servo fault occurs, a status message is logged to the corresponding servo control or monitor
maintenance log. This information is also accompanied by a time and date stamp. An "RTC DATE" entry is
made every time a servo is powered on, it is normally not useful for troubleshooting.
The following is a listing of possible faults that could be reported in a GSA fault log. Faults can occur in either
the monitor board processor or the control board processor, both of which are contained in the GSA unit.
Page 2-84
Rev. L
G1000 Nav III Line Maintenance Manual
190-00352-00