G1000 NXi System Maintenance Manual Page 139
King Air 300 Series Revision 1
190-00716-N1
The Aux – System Status page displays the following information for each LRU and sub-
function:
• Status: A green check is displayed for properly operating LRUs. A red ‘x’ appears when
an internal LRU fault is detected and it has taken itself offline, or if the MFD cannot
communicate with the LRU.
• Serial Number: Each LRU serial number is displayed (functions such as GPS and GS
are contained within an LRU; therefore, serial numbers are not shown for these).
• Current SW Version Loaded.
When troubleshooting, first check to ensure that each LRU status is ‘green’ and that the correct
software is loaded in each unit. Additional airframe and database information is also displayed
on this page.
System Annunciations
If data fields become invalid due to an LRU failure, the PFD/MFD typically annunciates the
failure with a large red X, as shown in Figure 5-2.
Figure 5-2, System Annunciations
Failed Path Messages
The following message indicates there is a data path connected to the GDU (PFD1, PFD1, or
MFD) or the GIA 63W (1 or 2) that has failed.
FAILED PATH – A data path has failed.
The FAILED PATH message is triggered by a timeout of any one digital channel. The channels
that are checked are listed on these pages in config mode:
1) GDU RS-232 / ARINC 429 CONFIG (PFD1/2, and MFD)
2) GIA RS-232 / ARINC 429 CONFIG (GIA1 and GIA2)
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