
G1000 Supplemental Maintenance Manual
Page 5-27
Textron Nav III Series
Revision 3
190-02128-04
7. The operator should carry out the actions called for in the prepared test sequence.
NOTE
It is important that all actions are carried out in the order and at the precise
elapsed time as specified in the prepared test sequence.
8. When the operator has completed the actions specified in the test sequence, press the
ENTER button to indicate that the process is complete. When this is done, the TEST
COMPLETE field stops blinking.
9. The PFD informs the operator if the installation has passed or failed the magnetometer
interference test. If the test passes, no further action is required for this test.
If the test fails, the installation should be considered unreliable until the source of
magnetic interference is identified and remedied. When the magnetometer interference
test fails, record the three magnetometer maximum deviation values and their
corresponding timestamps. Reference the installation manual for the GSU 75 (190-
01639-00 for acceptable magnetic interference limits. Compare the corresponding
timestamps with the prepared test sequence to identify which action produced the
problem. Contact Garmin for assistance in resolving the problem.
NOTE
Two common reasons for a failed magnetometer interference test are: 1)
new equipment is installed in close proximity to the GMU 44 magnetometer,
and 2) an existing or new electronic device has become grounded through
the aircraft structure instead of via the proper ground wire in a twisted
shielded pair.
10. Press the ENT key on the PFD to conclude this procedure.
5.10 GSU 75 Troubleshooting
Air Data Symptoms
For GSU 75 Air Data Troubleshooting, refer to the GDC 74A section in the G1000 Nav III Line
Maintenance Manual.
Содержание G1000 NXi
Страница 61: ......