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 DC output voltage of an EPS ranges from -43.2 V DC to -57 V DC.
l The normal status of the LEDs on a CMUA is as follows:
RUN LED: blinking
ALM 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
– 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)
6.9 Subsequent Operations
You must perform subsequent operations after installing a base station and checking related
hardware installation.
6.9.1 Sealing the Cable Holes on the Base
After all the cables are installed, you need to seal the cable holes of the base.
Procedure
Step 1 Use baffle plates to cover the idle cable holes, and then tighten screws on the plates, as shown
in Figure 6-137.
DBS3900 (Ver.B)
Installation Guide
6 Outdoor Scenario with AC Power Supply (BBU Installed
in an APM30H)
Issue 06 (2011-09-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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