Garmin G1000 Maintenance Manual page 55

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GIA1 ARINC 429 (continued)
Channel LRU
IN 6 GRS 77 #1
G1000 System Maintenance Manual
190-00907-00
Indicator
GIA1/GRS 77 #1 data path is functioning correctly.
GIA1/GRS 77 data path is not functioning correctly.
•
Check PFD Alert Window for GIA or GRS configuration
or software error messages. Correct any errors before
proceeding.
•
Verify GRS77 status is OK using the AUX - SYSTEM
STATUS PAGE on the MFD. If it has a Red-X,
troubleshoot why the GRS is offline before proceeding.
•
Ensure GRS77 connecter is secure and proper wire
harness strain relief is provided.
•
Swap GIA1 and GIA2, reconfigure both GIA's to their
new locations to confirm if the problem is in the original
GIA1.
−
Replace original GIA1 if box turns green after
swapping units.
•
Check the GIA1/GRS 77 interconnect wiring and unit
connector pins for faults.
Replace GRS 77.
GIA1/GRS 77 data path functionality is unknown. Reload
GIA1 configuration files.
Status
Page 5-19
Rev. B