
SYSTEM INSTALLATION MANUAL
89000016
TROUBLESHOOTING
1.
General
A.
Overview
(1)
This section provides information for troubleshooting problems that occur after KGX
installation. This section contains information on how to use the KGX LEDs and KGX control
panel (if installed) to troubleshoot installation problems. Refer to the CONFIGURATION,
CALIBRATION, AND CHECKOUT section to setup and configure the system.
2.
KGX LED Troubleshooting Procedure
A.
General
(1)
Table 4001 is a quick reference troubleshooting guide using the KGX LEDs.
Table 4001. Troubleshooting Guide
Problem
Potential Cause
Troubleshooting
No LED activity
No power
Verify power is turned on.
Check power connections to unit.
TX LED not active
Unit is not transmitting
ADS-B messages
Check antenna connections.
Check KGX control panel system messages.
RX LED not active
Unit is not receiving
ADS-B messages
Check antenna connections.
Check KGX control panel system messages.
ST LED is on
A fault with the unit
Check KGX control panel system messages.
ST LED is flashing quickly
GPS fault has occurred
Check GPS connection/configuration.
Check KGX control panel system messages.
GPS LED is flashing
slowly
GPS is acquiring satellites
Allow 2 to 3 minutes for GPS tracking.
Check GPS antenna.
Check GPS for problems.
GPS LED is off
GPS not communicating
Check GPS connection.
Check installation configuration.
GPS LED is flashing
quickly
GPS is reporting a fault
Check GPS for fault.
B.
UAT Status LED/Discrete Fault Indications
(1)
The status LED/discrete is an indicator of a fault reported by the KGX. The status LED is
visible on the KGX or the discrete can be connected to a cockpit annunciator. Potential
faults that cause the UAT status LED to turn on and the status discrete to be active (ground)
are listed in Table 4002.
Table 4002. UAT Status LED/Discrete Fault Indications
Problem Reported
Reported By
RF transmission failure
PBIT
Bottom antenna not connected (if DC ground check configured)
PBIT
Top antenna not connected (if DC ground check configured)
PBIT
EFFECTIVITY
ALL
Page 4001
22 Dec 2016
© Honeywell International Inc. Do not copy without express permission of Honeywell.