System Maintenance Manual

Page 5-78 G1000/GFC700 System Maintenance Manual – C90A/C90GT/C90GTi King Air
Revision G 190-00682-01
5.18 GMC 710 Troubleshooting
5.18.1 GMC 710 Alerts and Problems
Failure Message Cause Solutions
GMC CNFG – GMC Config error.
Config service req’d.
The G1000 has detected a
GMC 710 configuration
mismatch.
• Load GMC configuration files,
√ Replace GMC.
√ If problem persists, replace
master configuration
module, check config
module wiring for faults
and replace if necessary.
NOTE
New Terrain/Obstacle cards,
Jeppesen Aviation Database and
other optional features (i.e.
TAWS unlock card) will need to
be replaced if the master
configuration module is changed.
The G1000 System ID number
will change to a new number
when installing a new master
config module. The old Terrain
and other cards will no longer
work as they will remain locked
to the old System ID number.
GMC FAIL – GMC is inoperative.
The G1000 has detected a
failure in the GMC 710.
• Check wiring for faults (ref Failed
Path troubleshooting section).
• Replace the GMC 710.
MANIFEST – GMC software
mismatch. Communication halted.
The system has detected an
incorrect software version
loaded in the GMC 710.
• Load the correct software version.
See Section 3.9 for the Software
Load Procedure.