Garmin G1000 Maintenance Manual page 48

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PFD1 ARINC 429
Channel LRU
IN 1 GRS 77 #1
IN 2 GDC 74 #1
Page 5-12
Rev. B
Indicator
PFD1/GRS 77 data path is functioning correctly.
PFD1/GRS 77 data path is not functioning correctly.
•
Check PFD Alert Window for PFD or GRS77
configuration or software error messages. Correct any
errors before proceeding.
•
Verify GRS77 status is OK using the AUX – SYSTEM
STATUS PAGE on the MFD. If it is has a Red-X,
troubleshoot why the GRS is offline before proceeding.
•
Ensure GRS77 connecter is secure and proper wire
harness strain relief is provided.
•
Swap PFD and MFD to confirm if the problem is in the
PFD.
−
Replace original PFD if box turns green after
swapping displays.
•
Check the PFD1/GRS 77 interconnect wiring and unit
connector pins for faults.
•
Replace GRS 77.
PFD1/GRS 77 data path functionality is unknown. Reload
PFD1 configuration file.
PFD1/GDC 74A data path is functioning correctly
PFD1/GDC 74A data path is not functioning correctly.
•
Check PFD Alert Window for PFD or GDC74
configuration or software error messages. Correct any
errors before proceeding.
•
Verify GDC 74 status is OK using the System Status
Page on the MFD. If it has a Red-X, troubleshoot why
the GDC is offline before proceeding.
•
Swap PFD and MFD to confirm if the problem is in the
original PFD.
−
Replace original PFD if box turns green after
swapping displays.
•
Check the PFD/GDC 74 interconnect wiring and unit
connector pins for faults.
•
Replace GDC 74 if problem remains.
PFD1/GDC 74A data path functionality is unknown.
Reload PFD1 configuration file.
Status
G1000 System Maintenance Manual
190-00907-00