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On-site Maintenance Manual
Airbridge cBTS3612 CDMA Base Station
4.2 Exceptional Procedure of Replacement
&
Note:
1. This procedure is based on the "4.1.1
2. As we are going to focus on the parts different from the common replacement
procedure, be sure to get familiar with the "4.1.1
the procedure exactly throughout the replacement process.
4.2.1 BTS E1 Surge Protector (BESP)
The physical structure and installation position of BESP are
rather different from those of the boards in the baseband subrack,
therefore, while basically observing the "4.1.1
(some processes, such as the board removal and installation, are not
applicable to BESP and thus, can be handled flexibly), we should
also pay attention to the following:
I.
The influence on the service
Replacing a BESP may interrupt all the services transmitted
through it.
II.
Cut off and resume the power supply
Before replacing the board, we should toggle off all the switches
in the BTS switch box one by one (first the switch for the RF module,
then the baseband subrack, then the fan and then the power
Chapter 4 Component
Board Replacement " .
Board Replacement " first. Follow
4-8
Replacement
Board Replacement"
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