3 Powering On/Off the BBU3900
About This Chapter
This describes how to power on and power off the BBU3900. During power-on, you need to
check the status of the LEDs on the BBU3900. As for the power-off, the operation in a normal
situation and that in an emergency are different.
3.1 Powering On the BBU
Before powering on the BBU, set the power switch on the BBU to ON and determine the
operation status of the BBU based on the status of the LEDs.
3.2 Powering Off the BBU
The BBU power-off is classified into normal power-off and emergency power-off.
BBU3900
Hardware Maintenance Guide 3 Powering On/Off the BBU3900
Issue 03 (2010-06-05) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
3-1
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