Garmin SA01456Wi_D Manual Page 232

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Page 7-2 G1000/GFC700 System Maintenance Manual – C90A/C90GT/C90GTi King Air
Revision F 190-00682-01
7.1.1 PFD/MFD Test
1. Allow displays to initialize for ~1 minute.
2. Check that all COM/NAV display fields are valid in the top corners of both PFDs.
3. Check that attitude, heading, altitude, airspeed, vertical speed and OAT fields are valid within 2
minutes of power up on both PFDs.
4. Press the SENSOR softkey on each PFD and switch between ADC1 and ADC2. Verify that data
from both GDC 74Bs is valid on both displays.
5. Press the SENSOR softkey on each PFD and switch between AHRS1 and AHRS2. Verify that
data from both GRS 77s is valid on both displays.
6. Check that the engine instrument fields are valid on the MFD.
Figure 7-1. G1000 Normal Mode Check
7. Push the red DISPLAY BACKUP button on the pilot-side GMA 1347D. Verify that the pilot-
side PFD and MFD displays enter reversion mode. MFD should have valid altitude, airspeed,
vertical speed, COMM1, COMM2, NAV1, NAV2 and engine instruments.
8. De-activate pilot-side reversion mode by pushing the DISPLAY BACKUP button. Verify PFD 1
and MFD return to normal display modes.
9. Repeat Step 1 using GMA2. Ensure that PFD 2 and MFD enter reversion mode and MFD
displays valid altitude, airspeed, vertical speed, COMM1, COMM2, NAV1, NAV2 and engine
instruments.
10. De-activate co-pilot’s side reversion mode by pushing the DISPLAY BACKUP button. Verify
PFD 2 and MFD return to normal display modes.
11. If TAWS was activated, select the TAWS page (4th page in the MAP group) on the MFD.
a. Verify that the title at the top of the page reads “MAP – TAWS-B”. If TAWS has not been
enabled, the title will read “MAP – TERRAIN PROXIMITY” or “MAP – TERRAIN”.
b. Press the MENU button and select “Test TAWS” from the pop-up menu.
c. After the TAWS test has completed, verify that “TAWS System Test Okay” is heard over
the cockpit speaker.
12. If no other service is to be performed, perform final return-to-service test as specified in
Section 8.
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