L3 comminications Trilogy ESI-2000 Pilot's Manual page 58

Troubleshooting
Corrective Actions
CoNDITIoN
Continued from previ-
ous page.
Screen is green
System Status Screen:
If the following message
is shown:
• Mag Fail
4-8
(continued)
CAUSE/CoRRECTIVE ACTIoN
3. For Part 27/29 aircraft - No Mag input
signal is being detected. This is indi-
cated by the heading digital readout
being removed and a large red X in
the middle of the heading tape. A "No
Mag Input" message is shown above
the heading tape.
• If Mag begins working the mes-
sage is removed and the align-
ment continues.
• If the alignment does not become
active, cycle power to the Mag.
• If the invalidity continues to be
observed after power cycle the
Mag may be defective. Have Mag
checked by certified service cen-
ter.
If the screen input data fails to update,
the screen elements are removed and re-
placed with the green screen.
Cycle power to the ESI-2000.
If the green screen continues to be ob-
served after power cycle the ESI-2000
may be defective, have ESI-2000 checked
by certified service center.
Mag may be defective. Have Mag checked
by certified service center.
ESI-2000
Pilot's Guide