G1000 NXi System Maintenance Manual
Page 179
King Air 300 Series
Revision 1
190-00716-N1
Normal Mode Faults
MONITOR FAULT
NOTES
"GIA DIS FAULT"
Check the AP Disconnect power into the unit
"HOST DATA DIF"
Check the AHRS wiring to the system
"HOST DATA INV"
Check the AHRS wiring to the system
"SVO PWR INV"
Check unit power and AP Disconnect power
“STRP CODE CHNG”
Check the connector strap inputs to the unit
“MET STUCK SWTCH”
Check the MET switch inputs into the system
“MET STATUS DIF”
Check the MET switch inputs into the system
Control Processor
The control processor contains the logs that are found in these processors –
3 – Pitch Servo
5 – Roll Servo
7 - Yaw
9 – Pitch Trim Servo
There are two main groupings of faults that can occur in the control processor.
The first grouping of faults can occur during the GSA unit pre-flight test (PFT). If there is a fault
during PFT the unit will not be able to transition to normal mode and the only way to clear this
state would be to cycle unit power.
The second grouping of faults can occur during normal mode. These faults generally cause a
disconnect of power to the GSA and report that a fault has occurred to the GIA.
The Notes column indicates any actions that can be taken to troubleshoot the problem in the
aircraft by the technician. Any faults that are not listed here indicate an internal problem
requiring replacement of the servo. If the items in the Notes column check out ok, replace the
servo.
PFT Faults
CONTROL PFT STEP
NOTES
"INT COMM TEST FAIL"
This can sometimes be a result of a failure on the other board,
check faults on other processor
"CTL MOT PWR ON FAIL"
Check unit power and AP Disconnect power
"MON MOT PWR ON FAIL"
Check unit power and AP Disconnect power
"HALL 1 FAIL"
Check unit power and AP Disconnect power
"HALL 2 FAIL"
Check unit power and AP Disconnect power
"HALL 3 FAIL"
Check unit power and AP Disconnect power
"HALL 4 FAIL"
Check unit power and AP Disconnect power
"HALL 5 FAIL"
Check unit power and AP Disconnect power
Summary of Contents for G1000 NXi
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