
Page 5-6 G1000 System Maintenance Manual – Diamond DA40/40F
Revision G 190-00545-01
5.2.1 System Failure Troubleshooting
The following table provides basic troubleshooting guidance for LRU failures:
Table 5-2. System Failure Troubleshooting
Invalid Data Field
Associated
LRU(s)
Solution
NAV1 & COM1
GIA1
Check configuration settings for GIA1 and the PFD.
Check Ethernet interconnect from GIA1 to the PFD.
Switch GIA1 and GIA2, to verify location of problem:
9 If problem follows unit, replace defective unit.
9 If problem persists, replace defective PFD.
NAV2 & COM2
GIA2
Check configuration settings for GIA2 and the MFD.
Check Ethernet interconnect from GIA2 to the MFD.
Switch GIA1 and GIA2, to verify location of problem:
9 If problem follows unit, replace defective unit.
9 If problem persists, replace defective MFD.
GPS LOI & Invalid Time
Indications
GIA1 or GIA2
Ensure that a cell phone or a device using cell phone technology
is not turned on (even in a monitoring state) in the cabin.
Check GPS1 and GPS2 signal strength on the 3rd AUX page.
Check corresponding GPS antenna and cable.
Check Ethernet interconnect from PFD to GIA1 or MFD to GIA2.
Switch GIA1 and GIA2, to verify location of problem:
9 If problem follows unit, replace defective unit.
If problem persists, replace defective MFD or PFD.
XPDR FAIL
GTX 33
Check RS-232 configuration settings for GIA1, GIA2, and
GTX 33.
Reload GTX Config File and verify the aircraft registration
number is present, see Sections 3.5 and 7.5.
Replace defective GTX 33.
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