G1000/GFC 700 Post Installation Checkout Procedure – Hawker / Beechcraft King Air C90
Page 3-11
190-00682-00
Revision 5
Figure 3-2. PFD Power-up System Annunciations
In the normal operating mode, data fields that are invalid have large red X’s through them (Figure 3-2). A
valid field does not display a red X. Allow the displays to initialize for approximately one minute. The
GDC 74Bs requires a longer initialization period than do the other LRUs. During normal operation, this
causes the airspeed, altitude, vertical speed, and OAT fields to be invalid during the first ~40-60 seconds
of PFD power-up.
Outputs from the GRS 77 AHRS and GMU 44 are not valid until the units have been
calibrated as described later in this chapter.
5. Check that all COM/NAV fields are valid in the top corners of PFD1 and PFD2.
6. Check that altitude, airspeed, vertical speed, TAS, and OAT fields are valid on PFD1 and PFD2.
7. 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.
8. 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.
9. Check that engine instrument fields are valid on the MFD.
10. 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 (refer to Section 2).
NOTE
