Huawei DBS3900 Installation Manual page 83

DBS3900 LampSite
Installation Guide
Figure 7-11 Drilling holes and installing expansion bolts
Step 4 Lead the M6x50 screws through the washers, and then through the drilling holes on the
mounting bracket to the plastic expansion sleeves, and use a torque screwdriver to torque the
screws to 5 N•m, as shown in Figure 7-12.
Figure 7-12 Installing the mounting bracket
If the screws cannot be tightened using a Phillips screwdriver, use a hex key or an electric screwdriver to
assist the installation.
Step 5 Fit the four hooks of the pRRU3901 into the mounting holes on the mounting bracket and
then press the pRRU3901 downwards until a click is heard. See Figure 7-13.
Issue 08 (2016-05-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
7 Installing a pRRU3901
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