____________________________________________________________________
Page 5-50
G1000 System Maintenance Manual
Rev. A
190-00903-00
AHRS1 GPS – AHRS1 using
backup GPS source.
GRS 77 #1 is using a
backup GPS source.
AHRS1 GPS – AHRS1 not
receiving backup GPS
information.
GRS 77 #1 is not receiving
backup GPS information
from either GIA 63W.
AHRS1 GPS – AHRS operating
exclusively in no-GPS mode.
The GRS 77 is operating in
the absence of GPS.
AHRS1 GPS – AHRS1 not
receiving any GPS information.
GRS 77 #1 is not receiving
GPS data from either
GIA 63W.
AHRS2 GPS – AHRS2 using
backup GPS source.
GRS 77 #2 is using a
backup GPS source.
AHRS2 GPS – AHRS2 not
receiving backup GPS
information.
GRS 77 #2 is not receiving
backup GPS information
from either GIA 63W.
AHRS2 GPS – AHRS2 operating
exclusively in no-GPS mode.
The GRS 77 #2 is operating
in the absence of GPS.
AHRS2 GPS – AHRS2 not
receiving any GPS information.
GRS 77 #2 is not receiving
GPS data from either
GIA 63W.
•
Troubleshoot the possible loss
of either GPS receiver per
Section 5.1.2.1, GPS INTEG or
Time failure.
•
Replace the GRS 77.
AHRS1 SRVC – AHRS1
magnetic field model needs
update.
AHRS #1 magnetic field
model has expired.
AHRS2 SRVC – AHRS2
magnetic field model needs
update.
AHRS #2 magnetic field
model has expired.
Reference Garmin SB 0533 for
update instructions.
MANIFEST – AHRS1 software
mismatch. Communication
Halted.
The G1000 has detected an
incorrect software version
loaded in GRS 77 #1.
MANIFEST – AHRS2 software
mismatch. Communication
Halted.
The G1000 has detected an
incorrect software version
loaded in GRS 77 #2.
Load correct software version in the
GRS77.
AHRS MAG DB – AHRS
magnetic model database
version mismatch.
The G1000 has detected a
magnetic model database
version mismatch.
Reference Garmin SB 0533 for
update instructions.
BACKUP PATH – AHRS using
backup data path.
The PFD is using a backup
ARINC 429 data path to
receive AHRS data.
Troubleshoot for a failed datapath
using Section 5.1.5.