Huawei DBS3900 - Power-On Check

9.6 Power-On Check
Before a DBS3900 starts operating, you must check the power-on status of the cabinet and
components in it.
CAUTION
The DBS3900 must be powered on within seven days after it is unpacked, and the period for
which the DBS3900 remains powered-off during maintenance must not exceed 48 hours.
Power-On Check in the AC Power Supply Scenario
Figure 9-36 shows the power-on check when a DBS3900 is deployed in the DC power supply
scenario.
Figure 9-36 Power-on check in the DC power supply scenario
DBS3900 (Ver.B)
Installation Guide
9 Outdoor Scenario with DC Power Supply (BBU Installed
in an OMB)
Issue 06 (2011-09-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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