Garmin G1000 System Maintenance Manual page 169

Invalid Data Field
ATTITUDE FAIL
G1000 / GFC 700 System Maintenance Manual - 300/B300 Series King Air
190-00716-01
Associated
LRU(s)
•
Ensure that a cell phone or a device using cell phone
technology is not turned on (even in a monitoring
state) in the cabin.
•
Cycle GRS 77 or GRS 7800 power to restart
initialization.
•
Ensure GRS 77 or GRS 7800 connecter is secure
and proper wire harness strain relief is provided.
•
Ensure the GRS 77 or GRS 7800 is fastened down
tightly in it's mounting rack and that the mounting
rack is not loose (CAUTION - do not loosen the
mounting rack hardware to the airframe shelf or the
aircraft will need to be re-leveled and the
PITCH/ROLL OFFSET procedure performed).
•
Ensure GPS has acquired at least four satellites, has
a 3D navigation solution, and a DOP of less than 5.0.
GRS 77 or
This is particularly important for an ATTITUDE FAIL
GRS 7800
that appears during ground operation only.
•
Perform an Engine Run-Up Test to check if engine
vibration is causing the GRS 77 or GRS 7800 to go
offline.
•
Load configuration files to the PFD, MFD, GIA1, and
GIA2.
•
Calibrate the GRS 77 or GRS 7800 (Pitch/Roll Offset
and Magnetometer Calibration).
•
Replace GRS 77 or GRS 7800.
If problem persists replace GRS 77 or GRS7800
configuration module.
Contact Garmin Aviation Product Support if
condition continues after replacing the GRS 77 or
GRS 7800 and config module for additional
assistance.
Solution
Page 5-21
Revision 4