G1000 Backup Path Test; Gfc 700 Ground Checkout - Garmin G1000 Nxi System Maintenance Manual

G1000 Backup Path Test

With all three displays in normal mode and the entire avionics system turned on, verify on PFD1
there is not a system alert message stating "Failed Data Path". If this message is present,
troubleshoot per Section 5.1.1 and resolve the issue before continuing.

GFC 700 Ground Checkout

The following procedures verify the proper operation of the GFC 700 AFCS, after maintenance
has been performed. The technician performing these checks should be thoroughly familiar
with the G1000 and GFC 700. Information on the installation and operation of the GFC 700 can
be found by referring to Sections 6.12 and the G1000 King Air 300 Series Cockpit Reference
Guide, listed in Table 1-2.
In the sections that follow, an Autopilot disconnect should be accompanied by an
aural alert (two-second tone) unless otherwise specified.
Pre-Flight Test
1. Turn off the AVIONICS MASTER PWR, EXT PWR, and BATT switches and ground
power unit. After 30 seconds select the ground power unit, BATT, and EXT PWR
switches to ON. Verify the GFC 700 begins an automatic pre-flight test after AHRS and
ADC parameters become valid.
2. Verify that a white PFT annunciation is displayed on PFD1 and PFD2.
A momentarily red
acceptable.
3. Upon successful completion of the test, an aural alert will sound and the annunciation
will clear. The aural alert is generated by either GIA 63W #1 or GIA 63W #2, alternately,
with each system power-up. Thus, the PFT sequence must be run twice to verify both
GIA units are providing the correct aural alert.
If the 'PFT' annunciation turns red, the test has failed. Return to Section 5 for
troubleshooting.
4. Repeat Steps 1 - 3 to test the PFT aural alert for the other GIA 63W.
G1000 NXi System Maintenance Manual
King Air 300 Series
190-00716-N1
NOTE
NOTE
annunciation displayed before PFT starts is
NOTE
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