G900X/G950 Installation and Maintenance Manual – Troubleshooting
Page D-21
190-00719-00
Revision D
GIA2 RS-232
Channel LRU Indicator
Status
GIA2/GDC 74A #2 data path is functioning
correctly.
GIA2/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.
•
Verify GDC 74A #2 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 GIA2.
−
Replace original GIA2 if box turns green
after swapping units.
•
Check the GIA2/GDC 74A #2 interconnect
wiring and unit connector pins for faults.
•
Replace GDC 74A #2.
CHNL 1
GDC 74A #2
(if equipped)
GIA2/GDC 74A #2 data path functionality is
unknown. Reload GIA2 configuration files.
CHNL 3
GRS 77 #1
(output only)
GIA2/GRS 77 #1 output data path is not
monitored. A black box is normal.