Huawei BBU3900 - Figure 4-16 Position of the AC Surge Protection Box

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Figure 4-16 Position of the AC surge protection box

(1) AC surge protection box

l Replacing the AC surge protection box disrupts the surge protection function of the base

station. Therefore, the AC surge protection box should be replaced in 10 minutes.

Procedure

Step 1 Power off the base station.

Step 2 Wear an ESD wrist strap or a pair of ESD gloves.

CAUTION

Take proper ESD protection measures, for example, wear an ESD wrist strap or a pair of ESD

gloves, to prevent electrostatic damage to the boards, modules, or electronic components.

Step 3 Record all the cable connections on the panel of the AC surge protection box to be replaced.

Step 4 Disconnect the power cable and monitoring cable from the AC surge protection box, as shown

in Figure 4-17.

BBU3900

Hardware Maintenance Guide 4 Replacing the Components in the OMB

Issue 03 (2010-06-05) Huawei Proprietary and Confidential

4-13

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