____________________________________________________________________
Page 5-14
G1000 System Maintenance Manual
Rev. A
190-00903-00
SELECT UNIT
―
PFD2
ARINC 429 WINDOW
Channel LRU Indicator
Status/Recommended
Actions
PFD2/GRS 77 #2 data path is functioning correctly.
PFD2/GRS 77 #2 data path is not functioning correctly.
•
Check PFD1 Alert Window for PFD2 or GRS
configuration or software error messages. Correct
any errors before proceeding.
•
Verify GRS77 #2 status is OK using the AUX -
SYSTEM STATUS PAGE on the MFD. If it has a
Red-X, troubleshoot why the GRS is offline before
proceeding.
•
Ensure GRS connecter is secure and proper wire
harness strain relief is provided.
•
Swap GRS1 and GRS2 (if a GRS2 is installed) to
confirm if the problem is in the original GRS2.
−
Replace original GRS2 if box turns green after
swapping units.
•
Swap PFD1 and PFD2 to confirm if the problem is in
the original PFD2.
−
Replace original PFD2 if box turns green after
swapping displays.
•
Check the PFD2/GRS 77 #2 interconnect wiring and
unit connector pins for faults.
•
Replace GRS 77 #2.
IN 1
GRS 77 #2
PFD2/GRS 77 #2 data path functionality is unknown.
Reload PFD2 configuration file.
