System Maintenance Manual

Page 8-4 G1000/GFC700 System Maintenance Manual – C90A/C90GT/C90GTi King Air
Revision F 190-00682-01
8.1.3 Display Failure Test
Step Desired Result
MFD Display Failure Conditions:
1. Open MFD CB.
2. Verify desired results.
3. Close MFD CB.
The following shall occur when power is removed
from the MFD:
• MFD goes blank.
• All PFD1 and 2 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.
PFD2 Display Failure Conditions:
1. Open PFD 2 CB.
2. Verify desired results.
3. Close PFD 2 CB.
The following shall occur when power is removed
from PFD2:
• PFD2 goes blank.
• PFD1 and MFD remain in normal display formats.
The following illuminate on PFD1:
• HDG NO COMP illuminates on PFD1
• ROLL NO COMP illuminates on PFD1
• PIT NO COMP illuminates on PFD1
• IAS NO COMP illuminates on PFD1
• ALT NO COMP illuminates on PFD1
• GMA2 Fail – GMA2 is inoperative.
• XPDR2 Fail – XPDR2 is Inoperative.
PFD1 Display Failure Conditions:
1. Open PFD 1 PRI and PFD1 SEC circuit
breakers.
2. Verify desired results.
3. Close PFD 1 PRI and PFD1 SEC circuit
breakers.
The following shall occur when power is removed
from PFD1:
• PFD1 goes blank.
• PFD2 and MFD remain in normal display formats.
The following illuminate on PFD2:
• HDG NO COMP illuminates on PFD2
• ROLL NO COMP illuminates on PFD2
• PIT NO COMP illuminates on PFD2
• IAS NO COMP illuminates on PFD2
• ALT NO COMP illuminates on PFD2
• GMA1 Fail – GMA1 is inoperative.
• XPDR1 Fail – XPDR1 is Inoperative.