Garmin Diamond DA40, Maintenance Manual

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Page 5-22 G1000/DA40 System Maintenance Manual
Revision 6 190-00303-03
5.11.3 GRS Redundant Paths
Failure Message Cause Solutions
BACKUP PATH – AHRS using
backup data path. The GRS 77 is using a backup
ARINC 429 data path.
•
Check ARINC 429 configuration
settings at the GDU and GIA page
groups:
9 If configuration is not correct,
reconfigure GDU or GIA as
described in Section 7.
Check wiring.
Replace PFD1 with a known good unit,
to verify location of problem:
9 If problem persists, replace the
GRS 77.
9 If problem does not persist,
replace PFD1.
GRS 77
ARINC 429
GRS 77
GRS 77 GRS 77
ETHERNET
ETHERNET
ETHERNET
ETHERNET
ARINC 429
ETHERNET ETHERNET
ARINC 429
ARINC 429
No. 1
No. 2
GIA 63
GIA 63
Primary Data Path
Secondary Data Path
Third Data Path
Fourth Data Path
GDU 1040
PFD
GDU 1040
MFD
GDU 1040
MFD
GDU 1040
MFD
GDU 1040
MFD
GDU 1040
PFD
GDU 1040
PFD
GDU 1040
PFD
Figure 5-10. GRS 77 Data Paths