Huawei DBS3900 Installation Manual page 531

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DBS3900 (Ver.B)

Installation Guide

Figure 14-24 Installing a trapezoidal rack

(1) M12x60 bolt

Step 4 Remove the two plastic screws that are near the back of the cabinet from the top of the cabinet,

Figure 14-25 Removing plastic screws

(1) Plastic screw

Step 5 Install a fastening bar on the top of the cabinet, and then use a socket wrench to tighten the two

bolts, as shown in

Issue 06 (2011-09-15)

(2) Spring washer

Huawei Proprietary and Confidential

14 Indoor Scenario with DC Power Supply (BBU Installed

Indoors and RRU Powered Outdoors)

(3) Flat washer

(4) Waterproof gasket.