Garmin G1000 Maintenance Manual page 48

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Table 5-1. LRU Failure Annunciations and Recommended Actions
Annunciation
NAV1 or COM1
NAV2 or COM2
Page 5-2
Rev. A
Associated
LRU
•
Check PFD1 Alert Window for GIA1 configuration,
software or failed data path error messages. Correct
any errors before proceeding.
•
Swap GIA1 and GIA2 and reconfigure for their new
positions to verify location of problem:
GIA1
−
If problem follows GIA1, replace GIA1.
•
Check Ethernet interconnect from GIA1 to MFD or
PFD1 (based on aircraft configuration) and unit
connector pins for faults.
•
If problem persists, replace PFD1.
•
Check PFD1 Alert Window for GIA2 configuration,
software or failed data path error messages. Correct
any errors before proceeding.
•
Swap GIA1 and GIA2 and reconfigure for their new
positions to verify location of problem:
−
GIA2
If problem follows GIA2, replace GIA2.
•
Check Ethernet interconnect from GIA2 to MFD or
PFD2 (based on aircraft configuration) and unit
connector pins for faults.
•
If problem persists, replace MFD or PFD2 (based on
aircraft configuration).
Recommended Actions
G1000 System Maintenance Manual
190-00903-00