Display Failure Test - Garmin G1000 Nxi System Maintenance Manual

Outputs from the GRS 77/7800 or GSU 75B (AHRS portion) and GMU
44 are not valid until the units have been calibrated.
Check that all COM/NAV fields are valid in the top corners of PFD1 and PFD2.
Check that altitude, airspeed, vertical speed, GS, TAS, and OAT fields are valid on
PFD1 and PFD2.
Press the PFD Opt softkey on each PFD.
Press the SENSOR softkey on each PFD and switch between ADC1 and ADC2. Verify
that data from both GDC air data computers are valid on both displays.
Press the SENSOR softkey on each PFD and switch between AHRS1 and AHRS2.
Verify that data from both GRSs are valid on both displays.
Check that engine instrument fields are valid on the MFD.
Verify that no MANIFEST alert messages appear in the lower right corner (press the
flashing ALERTS softkey to view alert messages). If any MANIFEST errors appear, the
correct software to the related LRU must be loaded before proceeding.

Display Failure Test

Step
MFD Failure Condition:
1. Open MFD CB.
2. Verify desired results.
3. Close MFD CB.
PFD2 Display Failure Condition:
1. Open PFD 2 CB.
2. Verify desired results.
3. Close PFD 2 CB.
G1000 NXi System Maintenance Manual
King Air 300 Series
190-00716-N1
NOTE
Desired Result
For an MFD failure condition, the following shall occur:
•
MFD goes blank.
•
All PFD1 and PFD2 primary flight information is
retained.
•
The COM 1/2 and NAV 1/2 tuning fields remain valid
and can be tuned by rotating the tuning knobs on
PFD1 and PFD2.
•
XPDR 1/2 fields remain valid and XPDRs can adjusted
via PFD softkeys.
For a PFD2 failure condition, the following shall occur:
•
PFD2 goes blank.
•
PFD1 and MFD remain in normal display formats. The
following illuminate on PFD1:
o A white HDG box adjacent to the heading window
o A white ROL box adjacent to the roll scale
o A white PIT box adjacent to the pitch ladder
A white IAS box in the airspeed tape
o
o A white ALT box in the altitude tape
•
GMA2 Fail – GMA2 is inoperative.
•
XPDR2 Fail – XPDR2 is Inoperative.
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