Figure 10-36 Power-on check in the AC power supply scenario
LED Status and Output Voltage Check
l The normal status of the LEDs on a PMU is as follows:
RUN LED: blinking
ALM LED: off
l The normal status of the LEDs on a PSU is as follows:
Power LED: steady green
Protection LED: off
Fault LED: off
l The normal status of the LEDs on a GTMU, WMPT, WBBP, LMPT, LBBP, and UTRP is
as follows:
– RUN LED: on for 1s and off for 1s
DBS3900 (Ver.B)
Installation Guide
10 Outdoor Scenario with AC 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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