Huawei Airbridge cBTS3612 Maintenance Manual page 40

On-site Maintenance Manual
Airbridge cBTS3612 CDMA Base Station
2) Boards
Check the BCIM and the transmission link - only when these
two parts are working properly, can the BTS establish a link with the
BSC successfully.
Check the BCKM and the GPS receiving signals - only when
these two parts are working properly, can the other BTS boards work
normally.
Check if the BCPM is working properly.
Check if the BRDM is working properly – only so, can the BTRM
work properly.
&
Note:
The BTS boards have quite a lot in common, therefore, the problems appearing in
these boards may look similar. When locating the board failure, you can first see
"3.2 Handling of Common Board Failure" for advice. If the problem still cannot be
solved, please turn to other sections in which this board is involved.
3) RF components
Transmitting channel: the BTRM signal is sent to the CDU (or
DFU, DDU) and then sent to the antenna and feeder for transmitting.
Receiving channel: The RF signal, after being received by the
antenna and feeder system, is sent to the CDU (or DFU, DDU) and
then received and distributed to the relevant BTRM for processing by
the RLDU.
Chapter 3 Component Failure
3-3
Handling