
SYSTEM INSTALLATION MANUAL
89000016
Table 4004. KGX Control Panel System Message Troubleshooting Guide (Cont)
System
Potential Cause
Troubleshooting
Top ant Fault
Top antenna disconnected
Check UAT antenna connection.
Make sure antenna is DC grounded.
Disable DC ground check in config if antennas are
not DC grounded.
Bottom ant Fault
Bottom antenna disconnected
Check antenna connection.
Make sure antenna is DC grounded.
Disable DC ground check in config if antennas are
not DC grounded.
PSU Fail
Internal DC power supply
failure
Cycle power on the KGX.
Return for maintenance if problem persists.
ADC Fault
Air data computer or altitude
encoder fault or not responding
Verify ADC is functioning.
Verify ADC port configuration and speed.
Verify ADC cable connection.
EFFECTIVITY
ALL
Page 4004
22 Dec 2016
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