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G900X/G950 Installation and Maintenance Manual – Troubleshooting
Page D-19
190-00719-00
Revision D
GIA1 ARINC 429
Channel LRU Indicator
Status
GIA1/GDC 74A #1 data path is functioning correctly.
GIA1/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
GIA1.
−
Replace original GIA1 if box turns green after
swapping units.
•
Check the GIA1/GDC 74A #1 interconnect wiring and
unit connector pins for faults.
•
Replace GDC 74A #1.
IN 5
GDC 74A
#1
GIA1/GDC 74A #1 data path functionality is unknown.
Reload GIA1 configuration files.