Garmin G1000 Maintenance Manual page 44

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System Annunciation Troubleshooting (continued)
Annunciation
Engine/Airframe Sensors
Page 5-8
Rev. B
Associated
LRU
•
Check PFD Alert Window for GIA1/2 or GEA
configuration, software or failed data path error
messages. Correct any errors before proceeding.
•
On the PFD in Configuration Mode, turn to the GE
STATUS page and verify that the GEA internal
power supply, configuration, and calibration status
boxes are green.
−
If the internal power supply box is red, check for
shorted engine/airframe sensors that receive
5V, 10V or 12V power from the GEA (tach
sensor, MAP sensor, Fuel Flow sensor, oil
pressure sensor and pitot heat sensor).
−
The configuration and calibration boxes should
be green. If the calibration status boxes are
red, replace the GEA 71.
GEA 71 &
•
Verify the internal, external, and reference voltages
GIA 63 or
listed in the Main Analog and I/O A Analog boxes
GIA63W
are not dashed out (does not include Aircraft Power
1 and 2). If any voltages are dashed out, replace the
GEA.
•
Check the MFD AUX – SYSTEM STATUS page if
the GEA is online (green checkmark on the AUX –
SYSTEM STATUS page is present). If GEA is not
online (Red-X is present), verify the unit is receiving
power at the GEA rack connector.
•
Replace the GEA 71.
•
If problem persists, check the GIA/GEA interconnect
wiring and unit connector pins for faults.
•
For only REX-X of the EGT, TIT and CHT
temperature readings, replace the GEA
configuration module and thermocouple located in
the back shell of the GEA connector.
Solution
G1000 System Maintenance Manual
190-00907-00