Page 2-64
G1000 Nav III Line Maintenance Manual
Rev. L
190-00352-00
•
VERIFY: Verifies that the COPY command operated successfully and stores appropriate Cyclic
Redundancy Checks (CRCs) or checksums in the master configuration module.
2.7.2
Common Problems
Symptom Recommended
Action
CHT, EGT, and TIT are red X’d
(no other field is red X’d)
•
Ensure the GEA configuration module and thermocouple wiring and
pins are not damaged.
•
Replace the GEA configuration module and thermocouple.
One or more CHT, EGT, or TIT
temperatures drop as electrical
load increases
•
Check temperature probe(s) for shorts on the low side of the
thermocouple (usually where bayonet is cramped).
•
Replace defective temperature probe(s).
One or more CHT, EGT, or TIT
temperatures drift up and flag
•
Check for an open temperature probe or open wiring and replace
and/or correct.
Fuel quantity flags intermittently
•
Check for an open in the wiring and connectors between the GEA,
signal conditioner, and the sender (hi, low, or signal ground lines).
•
Check fuel sender for an open or dead spot.
Engine instruments are missing
on the MFD
•
Clear user data on each GDU by holding down the CLR button while
powering on each GDU. Keep the other display off while clearing user
data.
Discharged standby battery
indication
•
Refer to Section 2.7.5 for the GEA 70 High Side Current Monitor
Calibration Procedure.
2.7.3
GEA 71 Related Alerts
Message Cause
Solutions
GEA1 CONFIG – GEA1
configuration error. Config
service req’d.
The G1000 has detected a
GEA configuration
mismatch.
•
See Section 4.6 for instructions on
configuration.
•
If problem persists, replace master
configuration module, check config
module harness for faults and
replace if necessary.
NOTE
New Terrain/Obstacle cards, Jeppesen
Aviation Database and other optional
features (i.e. TAWS unlock card) will need
to be replaced if the master configuration
module is changed. The G1000 System ID
number will change to a new number when
installing a new master config module. The
old Terrain and other cards will no longer
work as they will remain locked to the old
System ID number.
MANIFEST – GEA1 software
mismatch. Communication
Halted.
The system has detected an
incorrect software version
loaded in GEA 71.
•
Load correct software version.
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