System Maintenance Manual

Page 3-22 G1000/GFC700 System Maintenance Manual – C90A/C90GT/C90GTi King Air
Revision F 190-00682-01
IMPORTANT!
Certain software and configuration files are REQUIRED to be re-loaded during
maintenance that involves removal and replacement of G1000 equipment.
Refer to Section 7 for re-configuration requirements for each G1000 LRU. Pay
special attention to the configuration of options for the G1000.
NOTE
Some functions require a separate ENABLE SD card. See the appropriate General
Arrangement drawing for card part number.
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 No.1 PFD 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.