L3 comminications Trilogy ESI-1000 Pilot's Manual page 40

Troubleshooting
Corrective Actions
conDition
SW Release 1.1 only.
After successful
alignment the Head-
ing digital readout is
removed and a red X
has replaced the digits
and tick marks on the
tape.
4-2
(continued)
caUse/correctiVe action
One or more of the following conditions
are detected.
1. Heading data is invalid.
• If the heading tape and readout do
not become active, cycle power to
the ESI-1000.
• If the invalidity continues to be
observed after power cycle, the
ESI-1000 may be defective Have
ESI-1000 checked by certified ser-
vice center.
2. If a "Mag Failed" message is shown
above the heading tape, then the Mag
is sending a failure message.
• If Mag begins working the message
is removed and the heading tape
and digital readout return.
• If the heading tape and readout do
not become active, cycle power to
the Mag and ESI-2000.
• If the invalidity continues to be
observed after power cycle the
Mag may be defective. Have Mag
checked by certified service center.
3. If a "No Mag Input" message is shown
above the heading tape, then no Mag
input signal is being detected.
• If the input data begins to be
received, the message is removed
and the heading tape and digital
readout return.
• If the heading tape and readout do
not become active, cycle power to
the Mag and the ESI-1000.
• If the invalidity continues to be ob-
served after power cycle there may
be a problem with the Mag connec-
tion or the Mag may be defective.
Have Mag checked by certified
service center.
For Part 27/29 rotorcraft the alignment
menu selection is not available.
For Part 23 aircraft re-alignment through
the alignment menu is recommended
if the heading tape and digital readout
return.
ESI-1000
Pilot's Guide