System Maintenance Manual

G1000/GFC700 System Maintenance Manual – C90A/C90GT/C90GTi King Air Page 5-35
190-00682-01 Revision F
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.
The GIA Maintenance Log can record any of the following faults:
• FCS Task not started: Bad gains
The FCS task has not started because the gains are not present or have been corrupted.
Reload the gain files to correct.
• FCS Task not started: Gain structure out of range
The FCS task has not started because the gains are not compatible with the GIA software.
Reload the gain files to correct.
• PFT FAIL: Timeout, <STEP>
Pre-flight test has failed because the specified step has not passed in the allotted time. See the GIA
pre-flight steps for a description of the possible values for <STEP> on the failed GIA and corrective
actions.
• PFT FAIL: Cross GIA Failed, State: <STEP>
Pre-flight test has failed on opposite GIA. <STEP> specifies the pre-flight test step on selected GIA
that was in progress when the pre-flight test failed on the opposite GIA. See the GIA pre-flight steps
for a description of the possible values for <STEP> on the failed GIA and corrective actions.
• PFT FAIL: <STEP>
Pre-flight has failed because the step specified has failed. See the GIA pre-flight test steps for a
description of the possible values for <STEP> on the failed GIA and corrective actions.
• AHRS MON invalid: <STATE>
The AHRS monitor has detected that the AHRS data is invalid. The possible values for <STATE>
are:
a. Mon Prmtr Invalid: The ARINC 429 data used by one of the monitors has not been
received.
b. Attitude Prmtr Invalid: The ARINC 429 pitch or roll angle has not been received.
c. Exceeded Attitude Limits: The pitch or roll angle has exceeded the engagement limits.