Power Supply Unit (Psu); Bts Rf Fan Module (Brfm) - Huawei Airbridge cBTS3612 Maintenance Manual

On-site Maintenance Manual
Airbridge cBTS3612 CDMA Base Station
I.
Heat dissipation
Replacing the BFAN will have some influence on the heat
dissipation of the baseband subrack
II.
Handling screws
Keep the BFAN fastening screws in a safe place, as they will be
used to fasten the new BFA N.

4.2.7 Power Supply Unit (PSU)

The physical structure of PSU is rather different from that of the
boards in the baseband subrack, therefore, while basically observing
the "4.1.1 Board Replacement" (some processes, such as the
board removal & installation and the MS dial-up test, are not
applicable to PSU and thus, can be handled flexibly), we should also
pay attention to the following:
The influence on the power supply
I.
Since the PSU is configured in a n+1 backup mode, when a
PSU is out of service, the power supply to the whole system will not
be affected. Thus we don't have to worry about the influence of
replacing a PSU on the power supply.

4.2.8 BTS RF Fan Module (BRFM)

The physical structure of BRFM is rather different from that of
the boards in the baseband subrack, therefore, while basically
observing the "4.1.1 Board Replacement" (some processes, such
4-12
Chapter 4 Component
Replacement