Garmin CIRRUS PERSPECTIVE SR20 Line Maintenance Manual page 77

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GIA1 ARINC 429 (continued)
Channel LRU
GRS 77 #2
IN 8 (if
equipped)
Cirrus Perspective™ Line Maintenance Manual
190-00920-00
Indicator Status
GIA1/GRS 77 #2 data path is functioning correctly.
GIA1/GRS 77 #2 data path is not functioning correctly.
•
Check PFD Alert Window for GIA or GRS configuration
or software error messages. Correct any errors before
proceeding.
•
Make sure the GRS77 #2 status is OK using the AUX ‐
SYSTEM STATUS PAGE on the MFD. If there is a Red‐X,
troubleshoot why the GRS is offline before proceeding.
•
Make sure the GRS77 #2 connecter is secure and
proper wire harness strain relief is provided.
•
Swap GIA1 and GIA2. Reconfigure both GIA's at their
new locations to see if the problem is in the original
GIA1.
−
Replace original GIA1 if box turns green after
swapping units.
•
Swap GRS77 #1 and GRS77 #2 to see if the problem is
in the original GRS77 #2.
−
Replace original GRS77 #2 if box turns green after
swapping units.
•
Check the GIA1/GRS 77 #2 interconnect wiring and
unit connector pins for faults.
•
Replace GRS 77 #2.
GIA1/GRS 77 #2 data path functionality is unknown.
Reload GIA1 configuration files.
Page 5-31
Rev. E