Huawei BTS3900 V200R010 Site Maintenance Manual page 7

About This Document
This describes the routine maintenance for the hardware items in the BTS3900. The hardware
items that are routinely maintained refer to the equipment room environment of the NodeB,
power supply and grounding system of the NodeB, and main components in the BTS3900.
4 Powering On/Off the BTS3900
When maintaining the BTS3900, you need to power on or power off the BTS3900. You must
power on the BTS3900 according to the specific procedure and requirements, and you can power
off the BTS3900 in a normal situation or in an emergency.
5 Replacing Components of the BTS3900
This describes how to replace the faulty BTS3900 components. The faulty components must be
replaced in time. The replaceable components in the BTS3900 are the BBU3900 case,
BBU3900 board or module, DCDU-01, FAN module, PMU/PSU, SLPU, WRFU, and
BTS3900 power subrack.
Conventions
Symbol Conventions
The symbols that may be found in this document are defined as follows.
Symbol
General Conventions
The general conventions that may be found in this document are defined as follows.
Convention
Times New Roman
Boldface
Italic
2
Description
Indicates a hazard with a high level of risk, which if not
avoided,will result in death or serious injury.
Indicates a hazard with a medium or low level of risk, which
if not avoided, could result in minor or moderate injury.
Indicates a potentially hazardous situation, which if not
avoided,could result in equipment damage, data loss,
performance degradation, or unexpected results.
Indicates a tip that may help you solve a problem or save
time.
Provides additional information to emphasize or supplement
important points of the main text.
Description
Normal paragraphs are in Times New Roman.
Names of files, directories, folders, and users are in
boldface. For example, log in as user root.
Book titles are in italics.
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Copyright © Huawei Technologies Co., Ltd.
BTS3900 WCDMA
Site Maintenance Guide
Issue 07 (2009-08-30)