System Maintenance Manual

Page 3-16 G1000 / GFC 700 System Maintenance Manual - 200/B200 Series King Air
Revision 6 190-00915-01
3.8.5 Configuration File Storage
The G1000 system is designed to store all configuration settings in various places so that the
configuration is retained in the aircraft during maintenance of units.
During system configuration, each file is sent directly to the applicable LRU where it is stored in local
LRU memory (except GRS 77 & GDC 74B). Each file is also stored in the PFD internal memory. The
applicable PFD also sends a copy of all configuration files to the ‘Master Configuration module’, located
in the connector backshell (see Section 6.16). If the PFD is replaced, the configuration module retains all
configuration files in the aircraft.
NOTE
The GRS 77 AHRS and GMU 44 Magnetometer do not have a configuration file.
However, these LRUs do store calibration data acquired during the post installation
checkout, which are characteristic to the specific installation. While performing
maintenance on these units, re-calibration may be required. See Section 7.7.1 for more
information on re-calibration criteria.
Figure 3-14, G1000 LRU Configuration File Storage