Handling Common Faults; Table 7-1 Solutions To Common Faults In The Emu - Huawei EMU User Manual

EMU
User Guide
This describes the solutions to common faults in the EMU.
Table 7-1

Table 7-1 Solutions to common faults in the EMU

Symptom
The power indicator is OFF.
The EMU fails to communicate
with the BTS/NodeB.
The relay malfunctions.
Boolean value input fails.
The humidity/temperature
sensor generates an alarm at
normal temperatures.
The humidity/temperature
query results are invalid values.
The water sensor generates a
false alarm.
Issue 13 (2009-12-30)
7

Handling Common Faults

lists the solutions to common faults in the EMU.
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Solution
Check whether the power cable is inversely connected.
Check whether the protection tubes F1, F2, F3, and F4 are
burned out.
Check whether the communication cables are intact.
Check whether the communication protocol is correctly
configured.
Check whether the output cabling of the relay is correct.
Check whether the alarming states are correctly set.
Check whether the cabling is correct.
Check whether the humidity/temperature sensor is
correctly connected.
Check whether the alarming threshold is correctly set.
Check whether the humidity/temperature sensor is
correctly connected.
Check whether the DIP switch SW_THE is correctly set.
Check whether the sensor fails, for example, by comparing
it with another sensor.
Check whether the water sensor is correctly connected.
Check whether the DIP switch SW_BKE 1 is correctly set.
7 Handling Common Faults
7-1