Garmin G1000 Maintenance Manual page 104

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5.13.2 GFC 700 Pre-Flight Test Sequence and Troubleshooting
This section helps the technician determine why the GFC 700 has failed the Pre-Flight Test
(PFT) indicated by the red PFT annunciation. There are 16 steps to the GFC 700 PFT. The
PFT is performed by both GIA's at startup, and needs to pass on both GIA's before the autopilot
can be engaged.
The PFT is only started if the AHRS has aligned, the GIA's and servos are configured, and the
certification gains are valid. If the PFT has not completed after one minute from when the
initialization started it will fail.
After the system PFT has passed, it will be performed again if a servo resets, if the autopilot
servo breaker is reset or the cross-side GIA restarts it.
Generally, the PFT failure fault is logged in the GIA Maintenance Log and not in the Servo
Maintenance Logs unless the GIA log fault identifies a servo problem.
Thoroughly understanding the operation of the system in
configuration mode before starting this procedure.
Status Page may be used to check the status of the servos as an
aid in troubleshooting.
To access the GIA and GSA/GTA Maintenance Logs:
1. Start the system in configuration mode.
2. Use the FMS knob on PFD1 to display the Diagnostics Terminal Page in the system
group. This page allows the technician to view maintenance logs associated with the
GFC 700.
3. Choose 'GIA 1' or 'GIA 2' in the LRU window.
4. In the SERVO window, choose 'NONE' to view the GIA Maintenance Log, or choose a
servo to view their logs.
5. Using the FMS knob, choose 'VIEW MAINTENANCE LOG' in the COMMAND window.
6. Press the ENT key.
7. When the Maintenance Log data starts to display in the OUTPUT window, you may see
"More...press any key to continue..." at the bottom of the OUTPUT window. This informs
you there is more data to display and the system has paused allowing you to view the
data before continuing. To see more of the data, reselect the "VIEW MAINTENANCE
LOG" in the COMMAND window and press the ENT key. The "...press any key to
continue..." function is not active at this time.
8. Scroll through the OUTPUT list by pressing the OUTPUT softkey.
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Rev. B
NOTE
The GFC
G1000 System Maintenance Manual
190-00907-00