G1000 NXi System Maintenance Manual
Page 173
King Air 300 Series
Revision 1
190-00716-N1
DRIVE SERVO
Allows the technician to enter a desired RPM at which to manually drive the selected servo.
Direction of rotation is controlled by the polarity of the RPM (+ or -). After the speed is entered,
the technician may use the ENG CLCH and DRV SRVO softkeys to drive the servo.
NOTE
Be especially certain that the flight controls are clear and safe to operate before
manually driving the servo.
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.
SLIP CLUTCH TEST RESULTS
This window is used during the automatic slip clutch torque measurement check.
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
annunciation, it defines the PFT sequence for the servos and the
GFC 700 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.
NOTE
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.
Summary of Contents for G1000 NXi
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