Garmin G1000 System Maintenance Manual page 152

SERVO DATA
Shows real-time reported data including servo voltage, speed, motor current, load cell torque, and clutch
solenoid status. A green box indicates the servo clutch is engaged.
5.6.3
GIA Fault Log Descriptions
The section was created to help determine why the GFC 700 has failed the Pre-Flight Test indicated by
the red PFT annunciation
system and then provides troubleshooting information to help resolve failures.
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, the PFT 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 G1000 system in Configuration mode is
recommended before starting this procedure. The GFC Status page may be used to check
the status of the servos and engage them to aid in troubleshooting
To access the GIA and GSA Maintenance Logs, perform the following steps –
1. Start the G1000 in Configuration mode.
2. Use the FMS knob on PFD1 to go to 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.
Page 5-32
Revision 1
, it defines the PFT sequence for the servos and the GFC 700
NOTE
G1000 / GFC 700 System Maintenance Manual - 300/B300 Series King Air
190-00716-01