Garmin Software Version 0321.23 Manual Pagina 234

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Page 7-26 G1000 System Maintenance Manual – Diamond DA40/40F
Revision G 190-00545-01
11. Verify that each column indicates
in green when the loading process has finished and
inspect the SUMMARY window as well to ensure that the load is successful.
12. After the software files are loaded, continue to the GRS/GMU Calibration Procedures section.
7.7.2 GRS/GMU Calibration Procedures
Table 7-5 provides a recalibration requirement matrix for the GRS 77 and GMU 44. Recalibration
requirements differ depending on what maintenance actions have been accomplished.
Table 7-5. GRS/GMU Calibration Requirement Matrix
Condition
Calibrations Required
Procedure A1:
GRS 77 Pitch/Roll
Offset
Procedure B:
GRS/GMU
Magnetic
Calibration
Procedure D:
Engine Run-up
Vibration
Test
GMU 44 was removed and/or replaced with
new unit.
X
GRS 77 AHRS was removed and/or
replaced. The mounting tray was NOT
removed and the mounting tray bolts were
NOT loosened.
None Required.
Continue to GRS/GMU Test section.
GRS 77 AHRS was removed and/or
replaced. The mounting tray WAS removed
and/or mounting tray bolts WERE loosened.
X X X
GRS 77 AHRS Configuration Module was
replaced.
X X X
GRS 77 Recalibration Criteria
No recalibration is required for GRS 77 unit removal or replacement unless the mounting bolts that secure
the AHRS mounting rack have been loosened or the GRS 77 configuration module has been replaced.
If the GRS 77 mounting rack bolts were not loosened and if the GRS 77 configuration module
has not been replaced, continue to the GRS/GMU testing section.
If the GRS 77 mounting rack bolts have been loosened, or, if the GRS 77 configuration module
has been replaced, perform the following procedures:
o Pitch/Roll Offset Calibration (Procedure A1, refer to Section 7.7.2.1)
o Magnetometer Calibration (Procedure B, refer to Section 7.7.2.3)
o Engine Run-Up Vibration Test (Procedure D, refer to Section 7.7.2.4)
GMU 44 Recalibration Criteria
If the GMU 44 was removed and/or replaced, perform the Magnetometer calibration (Procedure B).
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