G1000 / GFC 700 System Maintenance Manual - 300/B300 Series King Air
Page 8-5
190-00716-01
Revision 1
8.1.4
G1000 Cooling Fan Fail Annunciation Check
Do the following to verify the cooling fans and annunciations are functioning properly
Step Desired
Result
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
For the cooling fan failure conditions, 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
Fan Failure reset and acknowledgement:
1. Reset all cooling fan circuit breakers.
2. Acknowledge alerts by pressing the
ALERTS softkey on PFD1.
Verify the above alerts extinguish.
8.1.5
Standby Instrument Electrical Power Checks
This section tests the standby electrical power for the standby attitude indicator, the standby altimeter and
the standby airspeed indicator. (The magnetic compass is tested in each Phase inspection during the
cockpit lights check in the Super King Air 300 or B300 Maintenance Manual, listed in Table 1-2.)
Step Desired
Result
1.
Remove or ensure external aircraft power
is removed. Set main battery switch to
OFF.
2.
Ensure the STBY ATT and STBY ALTM
circuit breakers are closed.
3.
Ensure the MASTER PANEL LIGHTS
rocker switch in the overhead panel is in
the ON position.
4.
Ensure the STBY INSTR knob is turned to
full bright.
Verify the STANDBY BATTERY
annunciator/switch is not illuminated
Summary of Contents for Cessna Caravan G1000
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