6.1 Fan Assembly
The fan assembly dissipates heat from the BTS3900C cabinet.
A BTS3900C cabinet has two fan assemblies. The one at the left bottom in the OMB is the outer
air circulation fan assembly and the one at the left top in the OMB is the inner air circulation
fan assembly.
Exterior
The inner air circulation fan assembly has the same exterior as the outer air circulation fan
assembly, as shown in Figure 6-1.
Figure 6-1 Fan assembly
(1) Barcode opening
6.2 ELU
The electronic label unit (ELU) reports the cabinet type automatically to facilitate
troubleshooting.
The ELU is on the top right corner of the BTS3900C cabinet door, as shown in Figure 6-2.
BTS3900C (Ver.C)
Hardware Description 6 BTS3900C Components
Issue 03 (2013-05-27) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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