Garmin G1000 NAV III Line Maintenance Manual page 79

Message
COM1 RMT XFR – COM1
remote transfer key is stuck.
COM2 RMT XFR – COM2
remote transfer key is stuck.
COM1 TEMP – COM1 over
temp. Reducing transmitter
power.
COM2 TEMP – COM2 over
temp. Reducing transmitter
power.
2.4.7 NAV Related Alerts
Message
NAV1 SERVICE – NAV1
needs service. Return unit
for repair.
NAV2 SERVICE – NAV2
needs service. Return unit
for repair.
NAV1 RMT XFR – NAV1
remote transfer key is
stuck.
G1000 Nav III Line Maintenance Manual
190-00352-00
Cause
The COM1 external remote
transfer switch is stuck in the
enabled (or "pressed") state.
The COM2 external remote
transfer switch is stuck in the
enabled (or "pressed") state.
GIA1 COM has exceeded its
operating temperature
range.
GIA2 COM has exceeded its
operating temperature
range.
Cause
The G1000 has detected a
failure in NAV1 receiver.
The G1000 has detected a
failure in NAV2 receiver.
The NAV1 external remote
transfer switch is stuck in
the enabled (or "pressed")
state.
Solutions
•
Press the COM1 external remote
transfer switch again to cycle its
operation
•
Check COM1 external remote transfer
switch and wiring
•
Switch GIA1 and GIA2, to verify location
of problem:
If problem follows the unit, replace
o
GIA1.
•
Press the COM2 external remote
transfer switch again to cycle its
operation
•
Check COM2 external remote transfer
switch and wiring
•
Switch GIA1 and GIA2, to verify location
of problem:
If problem follows the unit, replace
o
GIA2.
•
Check fan, wiring and air tubing for
proper operation (if applicable).
•
Replace GIA1.
•
If problem persists contact Garmin
Aviation Product Support for assistance.
•
Check fan, wiring and air tubing for
proper operation (if applicable).
•
Replace GIA2.
•
If problem persists contact Garmin
Aviation Product Support for assistance.
Solutions
•
Replace GIA1
•
Replace GIA2
•
Press the NAV1 external remote transfer switch
again to cycle its operation
•
Check NAV1 remote transfer switch and wiring
•
Switch GIA1 and GIA2, to verify location of
problem:
If problem follows the unit, replace GIA1.
o
Page 2-51
Rev. L