Gsu 75 Adahrs (If Installed) - Garmin G1000 NXi Supplemental Maintenance Manual

7.6

GSU 75 ADAHRS (if installed)

Original GSU unit is Reinstalled
No software or configuration loading is required if the removed GSU 75 is re-installed. This
does not include units that were returned for repair as their software and configuration files are
deleted during the repair testing process. Perform a pitot - static system leak check and
continue to Section 9.
New, Repaired or Exchange GSU unit is Installed
If a new, repaired or exchange GSU unit is installed, the correct software and configuration files
must be loaded to the unit.
New GSU 75 Configuration Module is Installed
The correct configuration files must be loaded if the GSU75 configuration module has been
replaced.
LRU Replacement Procedure GSU
1. Open the MFD PFD (ESS BUS), and PFD (AVN BUS 1) circuit breakers.
2. Remove Garmin SD/MMC/FS 510 cards from bottom slots of the MFD and PFD if
present.
3. Apply power to the G1000 system by connecting external power to the aircraft to
energize the aircraft and avionics electrical busses.
4. Turn on Avionics electrical busses.
5. Power on the MFD and PFD in configuration mode.
6. Using the PFD, scroll to the LRU replacement page.
7. Activate the cursor and select GRS1 in the LRU dropdown box.
8. Press the CHK All softkey.
9. Press the Load softkey.
10. Press ENT to acknowledge the process was complete.
11. Select GDC 1 in the LRU dropdown box.
12. Press the CHK All softkey.
13. Press the Load softkey.
14. Press ENT to acknowledge the process was complete.
15. Deactivate the cursor.
16. Scroll to the Configuration Manager page.
17. Press the CNFM CFG softkey.
18. Select ok when prompted to "Confirm configuration as expected configuration"
19. Power cycle the system verify there are no red-Xs or system alerts.
20. If red-Xs or system alerts are present, troubleshoot as necessary using Section 5 or re-
load the system using the legacy method in Section 7.6.2.
21. If there are no red-Xs or system alerts, continue to Section 7.7.3 for the air data portion
of the GSU and Section 7.10.5 for the AHRS portion of the GSU.
G1000 Supplemental Maintenance Manual
Textron Nav III Series
190-02128-04
Page 7-24
Revision 3