Garmin G1000 Line Maintenance Manual page 184

Uncontrolled if Printed
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4.7.12.3.13 PFT Step 12: Verify Servo PFT Status
This test checks to verify all servos have passed their own preflight test.
4.7.12.3.14 PFT Step 13: Verify AP Disconnect Enabled
This steps checks to verify GIA1, GIA2, 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.
4.7.12.3.15 PFT Step 14: Verify Servo Validity
This step checks to verify all servos are online and communicating with valid data.
• Ensure all servos are turned on and communicating.
4.7.12.3.16 PFT Step 15: Verify Cross GIA PFT is Completed.
This step checks to verify the cross-side GIA is also on Step 14.
• Cycle power on all GIAs and servos.
• Ensure the PFD and MFD are turned on.
4.7.12.3.17 PFT Step 16: PFT Completed
The preflight test has successfully completed.
4.7.12.3.18 PFT Step 17: PFT Failed
The preflight test has failed.
4.7.12.4 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.
Table 4-22 and Table 4-23
Each servo has two processors, a monitor board processor and a control board proces-
sor. For each servo position (pitch, roll, yaw, and pitch trim), the two processors are
uniquely numbered. Faults can occur in either of the two, both of which are contained in
the GSA unit.
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Page 4-100
list possible faults that could be reported in a GSA fault log.
LMM for the Kodiak 100
190-02102-00 Rev.4