Garmin G1000 Nxi System Maintenance Manual page 209

Glideslope Alerts
Failure Message
G/S1 SERVICE – G/S1 needs
service. Return unit for repair.
G/S2 SERVICE – G/S2 needs
service. Return unit for repair.
G/S1 FAIL – G/S1 is inoperative.
G/S2 FAIL – G/S2 is inoperative.
GPS Alerts
Before troubleshooting, ensure that no cell phones or devices using cell phone
technology are turned on, even in a monitoring state, in the cabin.
Failure Message
MANIFEST – GPS1 software
mismatch. Communication
halted.
MANIFEST – GPS2 software
mismatch. Communication
halted.
GPS1 SERVICE – GPS1 needs
service. Return unit for repair.
GPS2 SERVICE – GPS2 needs
service. Return unit for repair.
GPS1 FAIL – GPS1 is inoperative.
GPS2 FAIL – GPS2 is inoperative.
G1000 NXi System Maintenance Manual
King Air 300 Series
190-00716-N1
Cause
The system has detected a failure
in G/S1 receiver.
The system has detected a failure
in G/S2 receiver.
The system has detected a failure
in G/S1 receiver.
The system has detected a failure
in G/S2 receiver.
NOTE
Cause
The system has detected an
incorrect software version loaded
in GIA1.
The system has detected an
incorrect software version loaded
in GIA2.
The system has detected a failure
in GPS1 receiver.
The system has detected a failure
in GPS2 receiver.
The system has detected a failure
in GPS1 receiver.
The system has detected a failure
in GPS2 receiver.
Solution
•
Replace GIA1.
•
Return unit to an Authorized Repair
Facility for service.
•
Replace GIA2.
•
Return unit to an Authorized Repair
Facility for service.
•
Switch GIA1 and GIA2 to verify
location of problem:

If problem follows the unit,
replace GIA.

If problem does not follow unit,
check G/S1 antenna and
cabling.
•
Switch GIA1 and GIA2 to verify
location of problem:

If problem follows the unit,
replace GIA.

If problem does not follow unit,
check G/S2 antenna and
cabling.
Solution
Load the correct GPS software. See
Section 7.3 for the Software Loading
procedure.
•
Replace GIA unit.
•
Return unit to an Authorized Repair
Facility for service.
•
Switch GIA1 and GIA2, to verify
location of problem:

If problem follows the unit,
replace GIA.

If problem does not follow the
unit, check GPS antenna and
cabling.
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