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G1000 System Maintenance Manual
Page 5-3
190-00903-00
Rev.
A
Table 5-1. (continued)
GPS INTEG or Time
GIA1 or 2
•
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 PFD1 Alert Window for GIA1/2 configuration,
software or failed data path error messages. Correct
any errors before proceeding.
•
Verify the aircraft is located where the GPS antennas
have a clear view of the sky.
•
Verify the aircraft is not parked in close proximity to a
hanger with the doors open equipped with a GPS
repeater
•
On the MFD AUX – GPS STATUS page, check for
erratic GPS Signal Strength bars. If they are erratic,
external interference is affecting the GPS receiver.
Locate source of interference and remove.
•
Swap GIA1 and GIA2 to verify location of problem. If
problem follows the GIA, replace the GIA.
•
Check corresponding GPS antenna and cable for
faults. Correct antenna or cable fault.
•
Check PFD1 to GIA1 and PFD2 (or MFD) to GIA2
Ethernet interconnect for faults. Correct interconnect
fault.
•
If problem persists; replace PFD1, PFD2 or the MFD
that shows the problem.
