Huawei DBS3900 Installation Manual page 154

DBS3900 LampSite
Installation Guide
Figure 8-39 Installing a pRRU3902 into the cabinet
Step 3 Optional: Use T20 with hole screwdriver to lock the protection screw on the attachment plate.
See Figure 8-40.
The protection screw protects the pRRU3902 from being removed and must be locked if
required.
Figure 8-40 Locking the protection screw
(1) M4 threaded hole
Issue 08 (2016-05-30)
(2) Hole for self-tapping screws
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8 Installing a pRRU3902 or pRRU3911 or
pRRU3911+WIFI
(3) Quincunx screw
147