3 Maintaining BBU3900 Hardware
After the site is put into use, routine maintenance on the BBU is required to ensure that it runs
properly in the long term.
Conventions
1. Symbol Conventions
The following symbols may be found in this document. They are defined as follows
Symbol Description
DANGER
Indicates a hazard with a high level of risk that, if not avoided,
will result in death or serious injury.
WARNING
Indicates a hazard with a medium or low level of risk which, if
not avoided, could result in minor or moderate injury.
CAUTION
Indicates a potentially hazardous situation that, if not avoided,
could cause equipment damage, data loss, and performance
degradation, or unexpected results.
TIP
Indicates a tip that may help you solve a problem or save your
time.
NOTE
Provides additional information to emphasize or supplement
important points of the main text.
2. General Conventions
Convention
Description
Times New Roman Normal paragraphs are in Times New Roman.
Boldface Names of files,directories,folders,and users are in boldface. For
example,log in as user root .
Italic Book titles are in italics.
Courier New
Terminal display is in Courier New.
3. Command Conventions
Convention
Description
Boldface The keywords of a command line are in boldface.
Italic Command arguments are in italic.
[ ] Items (keywords or arguments) in square brackets [ ] are optional.
About This Document
BBU3900 GSM
User Guide
2 Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd
Issue 04 (2008-09-05)
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