Huawei DBS3900 LTE Installation Manual page 74

RRU3260
Installation Guide
2.
3.
Step 5 At a position 80 mm (3.15 in.) above or below the first set of RRU mounting brackets, install
the second set of RRU mounting brackets, as shown in
Figure 8-18 Installing the second set of RRU mounting brackets
Step 6 Install the fourth RRU onto the fourth main bracket, use an inner hexagon torque screwdriver
to tighten the captive screw into the holes of the attachment plate and main bracket to 5 N·m
(44.25 lbf·in.) so that the attachment plate and main bracket are firmly secured, as shown in
Figure
Issue ()
Use an M6 Phillips screwdriver to loosen the screw on the metal sheet closer to handle of
the first RRU. Then rotate the metal sheet to align the vacant hole in the metal sheet with
a hole on the top of the second RRU.
Insert the removed screw into the hole on the top of the second RRU and use an M6 torque
screwdriver to tighten the screw to 5 N·m (44.25 lbf·in.).
8-19.
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8 Installing the RRU
Figure 8-18.
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