Cooling Fan Fail Annunciation Check; Gps Signal Acquisition - Garmin G1000 Nxi System Maintenance Manual

Repeat Step 1 using GMA 2. Ensure that PFD 2 and MFD enter reversion mode and
MFD displays valid altitude, airspeed, vertical speed, COM 1, COM 2, NAV 1, NAV 2
and engine instruments.
De-activate co-pilot's side reversion mode by pushing the DISPLAY BACKUP button.
Verify PFD 2 and MFD return to normal display modes.

Cooling Fan Fail Annunciation Check

Do the following to verify the cooling fans and annunciations are functioning properly
Step
Cooling Fan Failure Conditions:
1. Ensure the G1000 is in normal mode and verify
that there are no fan related alert messages
displayed in the PFD1 or PFD2 Alerts Window.
2. Pull the following cooling fan circuit breakers:
a) PFD/GIA FANS LEFT
b) PFD/GIA FANS RIGHT
c) MFD FAN
Fan Failure reset and acknowledgement:
1. Reset all cooling fan circuit breakers.
2. Acknowledge alerts by pressing the Alerts
softkey on PFD1.

GPS Signal Acquisition

This test requires the aircraft to be outside to see the GPS satellites or indoors with a GPS
repeater.
G1000 NXi System Maintenance Manual
King Air 300 Series
190-00716-N1
Desired Result
For the cooling fan failure conditions, after a 30-second
delay verify that the following alert messages are
displayed:
•
AVN FAN 1 FAIL – Avionics cooling fan #1 is
inoperative
•
AVN FAN 2 FAIL – Avionics cooling fan #2 is
inoperative
•
PFD 1 FAN FAIL – PFD #1 cooling fan is inoperative
•
PFD 2 FAN FAIL – PFD #2 cooling fan is inoperative
•
MFD FAN FAIL – MFD cooling fan is inoperative
Verify the above alerts extinguish.
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