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G1000 System Maintenance Manual
Page 7-31
190-00903-00
Rev.
A
7.1.11
GCU 475 or GCU 477
Original GCU 475 or GCU 477 Reinstalled:
If the GCU 475 or GCU 477 that was removed is re-installed (same serial number), no software
loading or configuration is required. This does not include units that were returned for repair as
their software and configuration files are deleted during the repair testing process.
New or Repaired GCU 475 or GCU 477 Installed:
If a new or repaired GCU 475 or GCU 477 is installed, load the following files after removing
the Supplemental Database cards from the bottom slots of each display. Note which card was
removed from the MFD so it may be identified later for reinsertion in the MFD when software
and configuration loading is complete. It contains a FliteChart or Chartview database which is
only used by the MFD. Reinstall all the cards after the software and configuration file loads are
complete.
• GCU Software
• GCU Configuration
7.1.11.1
GCU 475 or GCU 477 Testing
Testing consists of performing a basic operational check.