Figure 11-31 Power-on check in the DC power supply scenario
LED Status and Output Voltage Check
l The DC output voltage of a DCDU-03B ranges from -43.2 V DC to -57 V DC.
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
– ALM LED: off
– ACT LED: on
l RUN LED on the UPEU: on
l STATE LED on the FAN unit: blinking green slowly (on for 1s and off for 1s)
DBS3900 (Ver.B)
Installation Guide
11 Indoor Scenario with DC Power Supply (BBU Installed
on a Wall)
Issue 06 (2011-09-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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