Garmin G1000 NXi Supplemental Maintenance Manual page 77

System Failure Troubleshooting
The following table provides basic troubleshooting guidance for LRU failures. Refer to G1000
Wiring Diagram, listed in Table 1-1, as needed to verify interconnects.
For troubleshooting of data fields and units not listed here, refer to the Cessna Nav III Line
Maintenance Manual.
Invalid Data Field
XPDR FAIL
TAS FAIL
AIRSPEED FAIL
ALTITUDE FAIL
VERT SPEED FAIL
G1000 Supplemental Maintenance Manual
Textron Nav III Series
190-02128-04
NOTE:
Associated
LRU(s)
•
Check GTX 335R/345R configuration settings for GIA1 and
GIA2.
•
Check GTX 335R/345R and GIA1 interconnect.
GTX 335R,
•
Check GTX 335R/345R and GIA2 interconnect.
GTX 345R
•
Perform a SET>ACTV configuration reset on the GTX Config
(if installed)
page, and verify the aircraft registration is present.
•
Replace GTX 335R/345R.
✓
If problem persists, replace GIA.
•
Inspect GSU 75 pitot/static plumbing integrity.
•
Inspect pitot/static ports and associated equipment for faults.
GSU 75 (if
•
For TAS failure, also check GTP 59 probe.
installed)
•
Check GSU 75 configuration settings for the PFD, MFD,
GIA1, and GIA2.
✓
If problem persists, replace the GSU 75.
Solution
Page 5-9
Revision 3