Processing Of Common Board Faults - Huawei Airbridge CBTS3612-800 User Manual

User Manual
Airbridge cBTS3612-450 12-carrier CDMA Base Station
Check the BCIM board and transmission link. Only when the two parts are normal can
the base station establish a normal connection with BSC.
Check the BCKM board and GPS or GLONASS receiving signals. Only when the two
parts are normal can the other boards in a base station work normally.
Check whether the BCPM board works normally.
Check whether the BRDM board works normally. Only BRDM works normally can
BTRM works normally.
& Note:
Various boards in a base station have something in common, therefore their possible faults will be
similar . When locating a board fault, please first refer to "4.2 Processing of Common Board Faults". If
the problem still cannot be solved, please refer to the other parts in this chapter based on different kinds
of board.
3)
Check radio frequency parts
Transmission channel: the signals of the BTRM are amplified by the BHPA module
and sent to the CDU to combine. Then, they are output to the antenna feeder and
transmitted.
Receiving channel: the radio frequency signals are received through the antenna
feeder system and sent to the CDU. Then, the RLDU receives and splits them, and
sends them to the corresponding BTRM for processing.
Check the BHPA, CDU, RLDU and the antenna feeder system according to the above
describtion of transmission/receiving channels. If any fault occurs to some part,
handle it as described in corresponding part in this chapter based on the part name.

6.2 Processing of Common Board Faults

6.2.1 Description of Fault
Common board faults mainly include:
Wrong configuration of board parameters.
l
Faulty board communication link.
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Abnormal board temperature.
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Excessively high CPU occupation rate.
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Interrupted escape serial port.
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Failed initialization of minor board components.
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No signals at the optical interface.
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CELL BUS clock lost.
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Excessively high CELL BUS frame error rate.
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Faulty CELL BUS driving components.
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Board reset.
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The above-mentioned faults will all have corresponding fault alarms.
03Q-0112-20020720-120
6 Part Module Fault
6-2