Huawei Airbridge CBTS3612-800 User Manual page 33

User Manual
Airbridge cBTS3612-450 12-carrier CDMA Base Station
6.2.2 Fault Locating & Eliminating
I. Automatic configuration of base station failure
After the base station succeeds in the BOOTP request and establishes the OML with
the OMC, check whether the base station locally has its configuration file. If it has, the
configurations will be sent locally. If it has not or local configuration data are wrong,
the BCKM board will download the base station configuration file from a far end OMC.
If the base station configuration file fails to be downloaded, the board cannot obtain
correct parameter configuration and the base station cannot be in service. Possible
causes are as follows:
1)
OMC is not configured with the correct configuration file loading information or
the configuration file is incorrect.
2)
There is no corresponding base station configuration file in the loading file
directory configured in OMC.
3)
The FTP Server of OMC is not started or does not run normally.
4)
Such data as the file path, attribute information, user informatioon corresponding
to the FTP Server on OMC are not correctly configured.
In this case, it is necessary to eliminate the above possible causes one by one
(perform related operations via the OMC maintenance console). For other possible
fault causes and solutions, please refer to "3.2 Software Downloading Failure Fault".
II. Faulty board communication link
When powered on, the boards will be initialized. After that, they (excluding the BCKM)
will requrest the OMU on the BCKM for its configuration. After receiving correct
configurations, the board begins to work normally. If the ALM and ACT indicators flash
on the frequency of 4Hz, there is some fault occurring to the communcation link
between the board and the OMU.
1)
If an alarm occurs to some board (for example, the BCIM board) alone, while
other boards works normally .a fault may occur to this board. Then, it is
necessary to check whether the board is well plugged. If the TRX module is
faulty, it is necessary to check whether the optical fiber connection is good, then,
please reset this board. If the problem still cannot be solved, the faulty board
needs replacing.
2)
If such an alarm also occurs to other boards, it may be a BCKM fault, which will
be handled as described in "4.4 BTS Control & Clock Module (BCKM)".
3)
If the problem still cannot be solved, after the above two steps the fault can be
located to a base band frame backplane and this backplane needs replacing.
III. Abnormal board temperature
If the temperature of the base band frame board becomes abnormal, it is necessary
to make sure whether the fan module used for cooling the base band frame works
normally and whether the duct is blocked. If the temperature of a BTRM becomes
abnormal, it is necessary to make sure whether the corresponding BTS Radio
Frequency Fan Module (BRFM) works normally.
If the fault remains the same after the above reasons have been eliminated, it can be
located to the corresponding board, which needs resetting. If the fault still exists, the
corresponding board needs replacing.
03Q-0112-20020720-120
6 Part Module Fault
6-3