Huawei DBS3900 Installation Manual page 308

DBS3900 (Ver.B)
Installation Guide
Figure 9-7 Installing the expansion bolt assembly
(1) Bolt M10 x 75
Step 3 Align the expansion bolt assemblies with the hole and secure the backplane to the wall, as shown
in Figure
Figure 9-8 Installing the backplane
Issue 06 (2011-09-15)
(2) Spring washer 10
9-8.
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9 Outdoor Scenario with DC Power Supply (BBU Installed
(3) Plastic tube (4) Flat washer 10
in an OMB)
(5) Expansion tube
295