Garmin Cessna Caravan G1000, Руководство по техническому обслуживанию системы

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G1000 / GFC 700 System Maintenance Manual - 300/B300 Series King Air Page 5-43
190-00716-01 Revision 1
5.7 Backup Communications Path Checks
5.7.1
Overview
The G1000 system architecture is designed with redundant communication ports for several LRUs so that
critical information can continue to be displayed in the event of an equipment or wiring failure. Of most
importance is flight attitude, heading, and air data information. The GRS 77 and GDC 7400 each have
four separate ARINC 429 data lines which are all capable of sending data to the displays. The GEA 71,
GTX 33(D), and GMA 1347D each have two redundant serial communication paths for the same
purpose. See Figure 2-23 for a basic G1000 block diagram depicting this architecture. Several other
diagrams are shown later in this section for illustrative purposes. When troubleshooting, refer to the
G1000/GFC 700 Wiring Diagram listed in Table 1-2.
NOTE:
Refer to Section 8.1.6 for procedures on checking the status of each configured G1000 /
GFC 700 backup data path.
5.7.2
Data Path Failures
Failure Message Cause Solutions
FAILED PATH – A data path has
failed.
A communications data path
status is not being received by the
G1000.
Determine which data path has failed:
See Section 8.1.6.
Check wiring continuity for the failed
path.
Swap or replace the affected LRU.