Garmin G1000 Maintenance Manual page 39

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5.1.2 System Annunciation Troubleshooting
Annunciation
NAV1 or COM1
NAV2 or COM2
G1000 System Maintenance Manual
190-00907-00
Associated
LRU
•
Check PFD 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 PFD and
unit connector pins for faults.
•
If problem persists, replace PFD.
•
Check PFD 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 and
unit connector pins for faults.
•
If problem persists, replace MFD.
Solution
Page 5-3
Rev. B