Lenovo B550 Laptop User Guide

							
P/N: 147003161-1.1Printed in China

Lenovo B550
User Guide V1.0
Read the safety notices and important tips in the included manuals before using your computer.
©Lenovo China 2010
New World. New Thinking.TM
www.lenovo.com 
						

							
B550 UserGuide V1.0 cover_2-3
First Edition (January 2010)
•Some instructions in this guide may assume that you are using Windows® 7. If you are       using other Windows operating system, some operations may be slightly different. If you       are using other operating systems, some operations may not apply to you, and thus       shouldn’t affect your use of this computer. 
•Before using this information and the product it supports, be sure to read Important safety        information on page ii and Notices in Appendix E first.
•The features described in this guide are common to most models. Some features may        not be available on your computer and/or your computer may include features that are        not described in this user guide.
Notes
LENOVO products, data, computer software, and services have been developed exclusively at private expense and are sold to governmental entities as commercial items as defined by 48 C.F.R. 2.101 with limited  and  restricted  rights  to  use,  reproduction  and  disclosure.  LIMITED  AND  RESTRICTED RIGHTS NOTICE: If products, data, computer software, or services are delivered pursuant a General Services Administration “GSA” contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No. GS-35F-05925.
© Copyright Lenovo 2010. 
If your product is not working correctly, 
DO NOT RETURN IT TO THE STORE.
For technical assistance, contact a Lenovo support specialist 24 hours a 
day by calling toll free 1-877-4 LENOVO (1-877-453-6686).   
Additionally, you can find support information and updates on the 
Lenovo Web site located at http://consumersupport.lenovo.com.
* Only for the users from the United States. 
						

							Dear user,
Thank you for purchasing your new Lenovo notebook computer! 
Before using this product, make sure to read this user guide carefully. 
We are pleased that you have chosen Lenovo for your mobile computing needs. To help you 
master the usage of your new computer quickly, we have prepared this user guide. In this 
manual you will find information on the system configuration, basic operating instructions, and 
important notices. We have done our best to avoid any errors in making sure that the 
information provided in this manual is accurate and reliable. However, due to the short length 
of the user guide it is impossible to cover all topics in great depth. For this reason, we apologize 
for any omissions you might find.
Lenovo is always trying to improve the performance and reliability of its products. For that 
reason, the hardware and software components shown within the user guide might not perfectly 
match those of your system. However, any inconsistencies between what is described in the user 
guide and the operations of your computer should not substantially affect your use.
Thank you for your cooperation. 
						

							Explanation of hard disk capacity
Dear user,
While using your computer, you may find that the nominal hard disk capacity indicated is 
somewhat different from the disk capacity displayed by the operating system. For example, a 
nominal 80GB hard disk will appear as less than 80GB in the operating system. This 
discrepancy is not an error in hard disk installation nor any other problem, but a normal 
phenomenon for computers. This phenomenon is primarily due to the following reasons:
I. Different standards used by the manufacturer and operating system when 
calculating hard disk capacity
Hard disk manufacturers use a radix of 1000, i.e., 1G = 1,000MB, 1MB = 1,000KB, 
1KB = 1,000 bytes. However, when identifying hard disk capacity, operating systems use a radix 
of 1024, i.e. 1GB = 1,024MB, 1MB = 1,024KB, 1KB = 1,024 bytes. The standard adopted by your 
computer is that of the hard disk manufacturers. Since the standards adopted by the hard disk 
manufacturer and operating system are different, the hard disk capacity displayed by the 
operating system will be different from the nominal hard disk capacity.
For example, if the hard disk is nominally X G, even when it is completely empty, the capacity 
displayed by the operating system will be:
X × 1000 × 1000 × 1000/ (1024 × 1024 × 1024) ≈ X × 0.931 G
In addition, if a portion of the hard disk space has been used for some specific purpose, then the 
capacity indicated by the operating system will be even less than X × 0.931 G.
II. A portion of the hard disk space is used for specific purposes
Lenovo computers may come with preinstalled OneKey Rescue system, so the hard disk has a 
special portion partitioned before delivery, which is used to store hard disk mirror and OneKey 
Rescue system program files. The size of the reserved space for this partition varies according to 
the model, operating system and software of the computer. For the sake of safety, this partition is 
not apparent, which is commonly referred to as a “hidden partition”.
In addition, after the hard disk is partitioned or formatted, the system will assign a certain 
amount of hard disk space for the system files.
For the above reasons, the available hard disk space indicated by the operating system is 
always less than the computer ’s nominal hard disk capacity. 
						

							i
Contents
Important safety information.......................ii
Important safety information ......................ii
Chapter 1. Getting to know your 
computer .......................................................1
Top view ......................................................... 1
Left-side view ................................................ 3
Right-side view .............................................. 4
Front view ...................................................... 5
Bottom view ................................................... 6
Chapter 2. Learning the basics ...................7
First use........................................................... 7
Using AC adapter and battery .................... 9
Using the touchpad ..................................... 10
Using the keyboard ..................................... 11
Special button .............................................. 13
System status indicators ............................. 14
Securing your computer ............................. 15
Connecting external devices ...................... 16
Chapter 3. Using the Internet ....................17
Wired connection ........................................ 17
Wireless connection .................................... 18
Chapter 4. OneKey Rescue system .......... 19
OneKey Rescue system .............................. 19
Chapter 5. Troubleshooting ......................20
Frequently asked questions ....................... 20
Troubleshooting .......................................... 22
Chapter 6. Upgrading and replacing 
devices ........................................................26
Replacing the battery .................................. 26
Replacing the hard disk drive ................... 27
Replacing memory ...................................... 29
Removing the optical drive ....................... 31Appendix A. Getting help and service ..... 33
Getting help on the Web ............................ 33
Calling the customer support center ........ 33
Getting help around the world ................. 34
Lenovo warranty service telephone 
numbers ........................................................ 35
Appendix B. Use, and care 
information ................................................. 36
Caring for your computer.......................... 36
Accessibility and comfort .......................... 39
Maintenance................................................. 40
Appendix C. Lenovo limited warranty ..... 42
Warranty information ................................ 47
Appendix D. Customer replaceable units 
(CRUs) ........................................................ 50
Appendix E. Notices .................................. 51
Notices .......................................................... 51
ENERGY STAR model information ......... 53
Wireless related information ..................... 54
TV tuner information ................................. 56
Electronic emissions notices ...................... 58
WEEE and recycling statements ............... 61
Turkish statement of compliance ............. 61
EU WEEE statements ................................. 62
Japan recycling statements ........................ 62
Notice for users in the U.S.A. .................... 63
Notice on deleting data from your hard 
disk ................................................................ 63
Appendix F. Features and 
specifications ............................................ 64
Trademarks ................................................ 65
Index ........................................................... 66 
						

							ii
Important safety information
Important safety information  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
This information can help you safely use your notebook personal computer. Follow and retain 
all information included with your computer. The information in this document does not alter 
the terms of your purchase agreement or the Lenovo Limited Warranty. For more information, 
see “Appendix C. Lenovo limited warranty” on page 42.
„Read this first
Personal computers are electronic devices. Power cords, power adapters, and other features can 
create potential safety risks that can result in physical injury or property damage, especially if 
misused.
The safety risks are categorized as follows:
Danger:
Physical injury or even death may be caused.
Attention:
Property damage or even minor injury may be caused.
To protect yourself from hazards and create a safer computer work environment, follow the 
instructions hereafter.
Unpack
Inspect the covers of the computer and AC adapter, especially parts with the following 
labels attached for any crack or damage.
Danger:
 Hazardous voltage, current, and energy levels are present inside any component that 
has this label attached.
Working place
Do NOT use the computer in humid places such as a bathroom.
Keep the computer and other parts away from liquids.
Danger:
 An electric shock may be caused by spilled liquid. 
Do NOT use the computer during a lightning storm.
Attention:
 Lightning storms may damage the computer and result in an electric shock.




 
						

							Important safety information
iii
Ensure your computer and other components maintain good ventilation. 
Danger:
 Placing the working computer or other parts on a bed, sofa or other flexible surface 
may block the ventilation slots causing overheating of your computer or other parts 
and increases the risk of fire.
Turn off wireless devices where they may cause interference, such as in a hospital or at an 
airport.
Correct usage procedures
Use ONLY the power cord, power adapter and battery pack shipped with the computer. 
Never use these devices with another product.
Be sure the power outlet is suitable for the plug and provides the correct voltage and 
current for the product you are using.
Danger:
 An unsuitable power supply may damage your computer and can cause an electric 
shock or fire.
Do NOT use a power outlet, power cord, power adapter or battery pack that appears to be 
damaged or corroded.
Do NOT share an electrical outlet with other home or commercial appliances that draw 
large amounts of electricity.
If power strips are used, the load should NOT exceed the power strip’s input rating. 
Unplug the power cord if there are any cracking, hissing, or popping sounds, or if a strong 
odor comes from the computer.
Danger:
 Overloading the power supply may cause unstable voltages which might damage 
the computer, data, attached devices, or even cause a fire.
Do NOT wrap the power cord around the power adapter or other object.
Do NOT squeeze or pinch the cord, or place heavy objects on it.
Attention:
 Stressing the cord may cause the cord to fray, crack or crimp which may present a 
safety hazard.
Avoid keeping your hands, your lap, or any other part of your body in contact with a hot 
section of the working computer for any extended length of time.
Attention:
 Extended contact with your body, even through clothing, could cause discomfort or 
even a skin burn.




 
						

							iv
Important safety information
Do not drop, bump, scratch, hit or place heavy objects on the liquid crystal display (LCD) of 
your computer.
Attention:
 Direct contact with liquid crystal material from a broken LCD is hazardous; if contact 
occurs, rinse with large amount of running water for more than 15 minutes.
Service and upgrades
Do NOT attempt to service a product yourself unless instructed to do so by the customer 
support center or your documentation.
Attention:
 DO NOT take risks or attempt to diagnose the situation yourself. Contact the 
customer support center for further guidance. For a list of service and support phone 
numbers, go to http://consumersupport.lenovo.com
.
Lenovo provides documentation with instructions when it is appropriate for customers to 
install options or replace units (CRUs). Closely follow all instructions when installing or 
replacing parts.
Disconnect the attached power cords, battery pack, and all the cables before you open the 
device covers, unless instructed otherwise in the installation and configuration procedures.
Keep the covers closed whenever the computer is plugged in.
Do NOT remove the cover of CD/DVD drive, power adapter, battery pack or other 
unserviceable parts.
Danger:
 Open the cover of CD/DVD drive or power adapter may result in an electric shock, 
laser radiation or even a explosion.


 
						

							1
Chapter 1. Getting to know your computer
Top view - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Attention:
•Do NOT open the display panel beyond 130 degrees. When closing the display panel, be 
careful NOT to leave pens or any other objects in between the display panel and the keyboard. 
Otherwise, the display panel may be damaged.
Note:The illustrations in this manual may differ from the actual product. Please refer to the actual product. 
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							2
Chapter 1. Getting to know your computer
Power button
Press this button to turn on the computer.
OneKey Rescue 
system buttonPress this button to open OneKey Rescue system (If OneKey Rescue system has 
been preinstalled) when the computer is powered off.
Note: For details, see “Chapter 4. OneKey Rescue system” on page 19.
System status 
indicatorsFor details, see “System status indicators” on page 14.
Integrated camera 
(select models only)Use the camera for video communication.
Wireless module 
antennasThe built-in antennas ensure optimal reception of wireless radio.
Computer displayThe LCD display with LED backlight provides brilliant visual output.
TouchpadThe touchpad functions as a conventional mouse.
Note: For details, see “Using the touchpad” on page 10.
Built-in 
microphoneThe built-in microphone (with noise reduction) can be used for video 
conferencing, voice narration, or simple audio recordings.
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