Garmin G1000 Maintenance Manual page 84

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5.6.6 NAV Related Alerts
Message
NAV1 SERVICE – NAV1
needs service. Return unit for
repair.
NAV2 SERVICE – NAV2
needs service. Return unit for
repair.
5.6.7 G/S Related Alerts
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.
Page 5-48
Rev. B
Cause
The system has detected
a failure in NAV1 receiver.
The system has detected
a failure in NAV2 receiver.
Cause
The system has detected
a failure in G/S1 receiver.
The G1000 has detected a
failure in G/S1 receiver.
The G1000 has detected a
failure in G/S1 receiver.
The System has detected
a failure in G/S2 receiver.
Solutions
•
Replace GIA1.
•
Replace GIA5.
Solutions
•
Replace GIA1.
•
Replace GIA5.
•
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.
G1000 System Maintenance Manual
190-00907-00