Replacing The Power Modules - Huawei DBS3900 WiMAX Maintenance Manual

DBS3900 WiMAX
Site Maintenance Guide (Draft)
The power module is used to shift the power level to enable the transmission between the
BTS3702E and other equipment through Ethernet cables. It is used to connect the ASN-GW or
cascading connections between the BTSs. Remove the Ethernet cables first when replacing the
power modules. This disrupts the transmission signal .
Prerequisite
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Context
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Procedure
Step 1 Remove the Ethernet cables from the faulty power modules.
Step 2 Turn the ring-pull on the faulty power module outwards. Hold the ring-pull and take the faulty
power module out of the port to remove it from the BTS3702E.
Step 3 Install the new power modules in the BTS3702E.
Issue 01 (2009-11-30)
6

Replacing the Power Modules

Check the quantity and type of the power modules. Prepare the new power modules.
Record the installation position and connection points of the faulty power modules and the
Ethernet cables.
The required tools or materials are ready. The tools or materials include the ESD wrist strap
or ESD gloves, and the ESD box or bag.
The power modules are hot-swappable.
Replacing the BTS3702E power module involves removing the Ethernet cables and faulty
power modules, installing the new power modules, connecting the Ethernet cables to the
power modules, and recovering the links. The operation takes about five minutes.
CAUTION
Take proper ESD prevention measures, for example, wear ESD wrist straps or gloves to
prevent boards, modules, and electronic components from being destroyed by static discharge
from the human body.
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6 Replacing the Power Modules
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