13.7 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 13-60 shows the power-on check when a DBS3900 is deployed in the AC power supply
scenario.
DBS3900 (Ver.B)
Installation Guide 13 Indoor Scenario (BBU Installed in an IMB03)
Issue 06 (2011-09-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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