Figure 4-48
Panel of the PSU (DC/DC)
(1) Power LED
(2) Protection LED
(3) Fault LED
Functions
l
Co24 V DC power into -48 V DC power and leads the -48 V DC power into the
DCDU-01.
l
Monitors the unit and reports alarms related to PSU faults (such as output overvoltage, no
output, and fan faults), alarms related to PSU protection (such as overtemperature
protection, and input overvoltage/undervoltage protection), and PSU out-of-position
alarms, if any.
LEDs
describes the LEDs on the panel of the PSU (DC/DC).
Table 4-62
LEDs on the panel of the PSU (DC/DC)
LED
Color
Status
Description
Power LED
Green
On
The power supply is
normal.
Off
There is no power
input, or the fuse is
damaged.
Protection LED
Yellow
Off
The running status is
normal.
BTS3900
Hardware Description
4 BTS3900 Components
Issue 04 (2011-02-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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