Garmin G1000 Maintenance Manual page 59

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GDC 74A
IN 5
#1
G1000 System Maintenance Manual
190-00907-00
GIA2/GDC 74A #1 data path is functioning correctly.
-
GIA2/GDC 74A #1 data path is not functioning correctly.
•
Check PFD Alert Window for GIA or GDC configuration
or software error messages. Correct any errors before
proceeding.
•
Verify GDC 74A #1 status is OK using the AUX –
SYSTEM STATUS page on the MFD. If it has a Red-
X, troubleshoot why the GDC is offline before
proceeding.
•
Swap GIA1 and GIA2, reconfigure both GIA's to their
new locations to confirm if the problem is in the original
GIA5.
−
Replace original GIA2 if box turns green after
swapping units.
•
Check the GIA2/GDC 74A #1 interconnect wiring and
unit connector pins for faults.
•
Replace GDC 74A #1.
GIA2/GDC 74A #1 data path functionality is unknown.
Reload GIA2 configuration files.
Page 5-23
Rev. B