RRU
Hardware Maintenance Guide
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Figure 4-28 Installing the upper attachment plate on the upper part of the RRU
5. Install the lower attachment plate on the lower part of the RRU, as shown in Figure 4-29.
a. Use an M6 Phillips screwdriver to remove the ground screw from the left side of the
lower part of the RRU.
b. Use an M4 torque screwdriver to tighten the two screws on the lower attachment
plate to 1.4 N·m (812.39 lbf·in.).
c. Install the removed ground screw into the original ground hole to secure the lower
attachment plate.
Figure 4-29 Installing the lower attachment plate on the lower part of the RRU
Step 4 Turn the RRU with upper and lower attachment plates upside down, insert the RRU into the
correct slot in an ICR, and tighten the four M6 screws on the RRU to 5 N·m (44.25 lbf·in.), as
shown in Figure 4-30.
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