Garmin GTN Xi Series, Руководство по обслуживанию

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190-01007-C1 GTN Xi Part 23 AML STC Maintenance Manual
Rev. 1 Page 5-3
The GTN Xi COM
does not transmit.
The PTT input is not being pulled
low.
Check that the MIC 1 Transmit
(P1003-11) input is pulled low for
transmit. The state of this discrete input
can be monitored on the Discrete
Inputs page found on the GTN
Diagnostics page. Refer to
Section 3.2.5.
No transmit power to COM.
Make sure power input is connected to
the COM 44-pin connector P1003-30,
-43, and -44, and ground to P1003-37,
-38, and -40.
The input voltage is too low.
Increase input supply voltage to
>11VDC.
The COM sidetone
level is too low or too
high.
Wrong type of headsets or
sidetone level needs adjustment.
If necessary, adjust the sidetone level.
Sidetone adjustment is found on the
COM Setup Config Mode page.
OBS Resolver won’t
calibrate.
Incompatible resolver or improper
connection.
Check the resolver specifications and
wiring.
OBS indication on
GTN Xi does not
agree with OBS
setting.
GTN Xi resolver input not
calibrated correctly.
Check wiring and calibration.
Resolver has not been calibrated.
GTN Xi Terrain Audio
not heard.
Terrain audio volume level set too
low.
Increase Terrain audio volume level.
Check wiring.
Check audio panel volume and
audio wiring.
Main software version has just
been updated.
Allow up to 5 minutes for the Terrain
audio clips to load. Cycle power on the
GTN Xi and verify that Terrain audio is
working properly.
GTN Xi is not
receiving heading
from compass system
(ARINC 429 heading
input used).
ARINC 429 input port speed not
correct.
Check ARINC 429 input port speed
setting for port that the device is
connected to and verify that the speed is
correct for that device.
Wiring connections are incorrect.
The raw data being received by the
GTN Xi can be monitored on the ARINC
Inputs page found on the GTN
Diagnostics page. Refer to Section
3.2.5.
Check wiring.
Problem Possible Cause Corrective Action