Installation Manual

67
CONFIDENTIAL UNDER NON-DISCLOSURE AGREEMENT (NDA)
Rev A1
Document:
WSS 4G Aircraft Installation Manual 750-
00003-00 Reva1.Docx
July -30
2020
7.2.3 Fault Indicators
Table 7.2.3-1 ABR Indicators
LED # State
Description
1 Blinking
Internal Eth Activity
2 Steady
18 or 19 POST/BIST failure
2 Blinking
19 DSP or Radio failure
1
3 Steady
3 Blinking
Loss of GPS
Holdover
4 Steady
ABR functional
4 Blinking
Radio Initialization
5 Steady
PHY Power Good
6 Auxiliary
Reserved
7 Auxiliary
Reserved
8 Auxiliary
Reserved
A critical fault results in the ABR being non-functional. A non-critical fault would result in
limited or degraded functionality.
NOTE: The WSS 4G system is a non-critical, entertainment only system with no
connection to critical aircraft systems. Failure of function or complete loss of the
WSS 4G system has no impact to the safe operation of the aircraft.
7.2.4 Fault Conditions and Diagnosis Steps
7.2.4.1 System Fails to Power Up
Fault Condition: No system status lights illuminated on front panel of the ABR
Recommendations:
1. Check 28Vdc power is present at ABR power input.
2. Check P1 and P2 cables are properly seated on ABR.
3. Contact Product Support for additional assistance in troubleshooting and ABR
repair/replacement as needed.
7.2.4.2 Fan Failure
Fault Condition: Fan failure. When the temperature exceeds the critical level, the unit shuts
down. A power cycle or a more involved maintenance action is required to restart the unit
from a critical over temperature condition.
Recommendations:
1. Check for obstructions at the rear of ABR that might impede the fan from
turning.
2. Clean the fan intake if there is any accumulation on dust or debris and
checking for a foreign object jamming the fan.
3. Check 28Vdc power is present at the ABR power input.
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