Garmin CIRRUS PERSPECTIVE SR20 Line Maintenance Manual page 76

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GIA1 ARINC 429 (continued)
Channel LRU
GDC 74A #2
IN 7 (if
equipped)
Page 5-30
Rev. E
Indicator Status
GIA1/GDC 74A #2 data path is functioning correctly.
GIA1/GDC 74A #2 data path is not functioning correctly.
•
Check PFD Alert Window for GIA or GDC configuration
or software error messages. Correct any errors before
proceeding.
•
Make sure the GDC 74A #2 status is OK using the AUX
– SYSTEM STATUS page on the MFD. If there is a Red‐
X, troubleshoot why the GDC is offline before
proceeding.
•
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.
•
Check the GIA1/GDC 74A #2 interconnect wiring and
unit connector pins for faults.
•
Replace GDC 74A #2.
GIA1/GDC 74A #2 data path functionality is unknown.
Reload GIA1 configuration files.
Cirrus Perspective™ Line Maintenance Manual
190-00920-00