Garmin G1000 Nxi System Maintenance Manual page 311

20. 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.
Legacy Replacement Procedure GSU1 or GSU2 (Alternate Method)
1. Insert the software loader card in the top slot of PFD1.
2. Power on PFD2, MFD, and PFD1 in configuration mode.
3. Select NO when "Do you want to update system files" is displayed on the screen of
PFD1.
4. Select the "SYSTEM UPLOAD" page using the small FMS knob on PFD1.
5. Activate cursor and rotate the small FMS knob to display the drop down menu. Rotate
the large FMS knob to highlight "04) AHRS – Air Data" and press ENT key on PFD1.
6. Rotate the small FMS knob to display the drop down menu. Rotate the large FMS knob
to highlight King Air- GSU 75B ADAHRS and GMU 44 Magnetometer. Press ENT key
on PFD1.
7. Press the CLR ALL softkey.
8. Use the large FMS knob to scroll to GSU 1 or GSU 2 whichever was replaced.
9. Highlight the software box and press the ENT key to check the box.
10. Highlight the Configuration box and press the ENT key to check the box.
11. Press "Load" softkey.
12. Monitor load progress. Verify software load completes without errors as indicated by the
following:
•
Green "PASS" in the Configuration and Software columns for each item loaded.
•
"Upload Complete............."COMPLETE" in the summary box.
13. Acknowledge the prompt by pushing the ENT key.
14. Deactivate the curser.
15. Scroll to the Configuration Manager page.
16. Press the CNFM CFG softkey.
17. Select ok when prompted to "Confirm configuration as expected configuration"
18. Power cycle the system. Verify there are no red-Xs or system alerts.
19. If red-Xs or system alerts are present, troubleshoot as necessary using Section 5.
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 NXi System Maintenance Manual
King Air 300 Series
190-00716-N1
Page 298
Revision 1