Lenovo B485 Laptop User Guide - Lenovo B480, B485, B580
Lenovo B485 Laptop Manual
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- Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 1
User Guide Lenovo B480, B485, and B580 - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 2
using this information and the product it supports, be sure to read and understand the following: • Safety and Warranty Guide • Regulatory Notice • "Important safety information" on page iv • Appendix C "Notices" on page 69 The Safety and Warranty Guide and the Regulatory Notice have been uploaded - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 3
the manuals 12 Connecting Troubleshooting computer problems 55 Troubleshooting 55 Battery and power problems 55 Computer screen problems 56 Problems with drives and other storage devices 57 OneKey Recovery Pro program problems . . 58 A password problem 58 A sound problem 59 Other problems - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 4
Battery recycling information for the United States and Canada 67 Battery recycling information for Taiwan . . . . . 67 Appendix C. Notices 69 Trademarks 70 Index 71 ii User Guide - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 5
Read this first Be sure to follow the important tips given here to continue to get the most use and enjoyment out of your computer. Failure to do so might lead to discomfort or injury, or cause your computer to fail. Protect yourself from the heat that your computer generates. When your computer is - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 6
especially if misused. To reduce these risks, follow the instructions in this document carefully. By carefully following the information until it has been inspected and, if necessary, repaired by an authorized servicer. As with any electronic device, pay close attention to the product when User Guide - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 7
precautions to reduce the risk of injury and property damage. Service and upgrades Do not attempt to service a product yourself unless instructed to do so by the Customer Support Center or your documentation. Only use a Service Provider who is approved to repair your particular product. Note - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 8
the power strip input rating. Consult an electrician for more information if you have questions about power loads, power requirements, and input ratings. vi User Guide - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 9
energy levels are present inside any component that has this label attached. There are no serviceable parts inside these components. If you suspect a problem with one of these parts, contact a service technician. External devices CAUTION: Do not connect or disconnect any external device cables other - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 10
only be replaced with approved parts. Never attempt to open or service any battery. Do not crush, puncture, or incinerate batteries or other liquids. Only recharge the battery pack strictly according to instructions included in the product documentation. Battery abuse or mishandling can cause Guide - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 11
Lithium coin cell battery notice DANGER Danger of explosion if battery is incorrectly replaced. When replacing the lithium coin cell battery, use only the same or an equivalent type that is recommended by the manufacturer. The battery contains lithium and can explode if not properly used, handled, - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 12
not operate your computer inside furniture, as this might increase the risk of overheating. • Airflow temperatures into the computer should not exceed 35°C (95°F). x User Guide - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 13
or structural damage. • 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. • Do not use you computer until all internal parts enclosures are fastened into place. Never - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 14
the covers of the laser product could result in exposure to hazardous laser radiation. There are no serviceable parts inside the device. • Use of controls or adjustments or performance of procedures other than those EN 50332-1 can be dangerous due to excessive sound pressure levels. xii User Guide - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 15
to lead, a chemical known to the State of California to cause cancer, and birth defects or other reproductive harm. Wash hands after handling. Save these instructions. © Copyright Lenovo 2012 xiii - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 16
xiv User Guide - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 17
Chapter 1. Getting to know your computer This chapter introduces the computer hardware features to give you the basic information you will need to start using the computer. • "Top view" on page 1 • "Left-side view" on page 3 • "Right-side view" on page 4 • "Front view" on page 4 • "Bottom view" on - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 18
page 16. 10 Status indicators The status indicators show the current status of your computer. For more information, refer to "Status indicators" on page 6. 2 User Guide - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 19
Left-side view 1 2 3 4 5 6 Figure 2. Lenovo B480, B485, and B580 left-side view 1 Security keyhole 2 Fan louvers 3 Monitor connector 4 Ethernet connector 5 HDMI port 6 USB 3.0 connectors 1 Security keyhole Purchase a security cable lock that fits this keyhole to lock your computer to a - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 20
, refer to "Using the ac power adapter and the battery pack" on page 13. Front view Figure 4. Lenovo B480, B485, and B580 front view 4 User Guide - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 21
" on page 18. Bottom view 1 2 3 4 Figure 5. Lenovo B480, B485, and B580 bottom view 1 Battery latch (manual) 2 Battery 3 Battery latch (spring loaded) 4 Bottom slot cover 1 Battery latch (manual) Keeps the battery secured in place. 2 Battery Use your computer with battery power whenever ac - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 22
type numbers quickly. 3 Hard disk drive indicator When this indicator is on, a hard disk drive or an optical drive is reading or writing data. 6 User Guide - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 23
4 Figure 7. Status indicators of Lenovo B480, B485, and B580 4 Power and battery status indicator • Green: The battery charge level is between 80% and 100%, or the battery discharge level is between 20% and 100%. • Slow blinking green: The battery charge level is between 20% and 80%, and charging is - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 24
power adapter: 100 to 240 V ac, 50 to 60 Hz Battery pack • Lithium-ion (Li-Ion) battery pack Lenovo B580 Size • Width: 378 mm 8 User Guide - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 25
• Depth: 252 mm • Height: 33.1 mm Heat output • 65 W (222 Btu/hr) or 90 W (307 Btu/hr) maximum heat output (depending on the model) Power source (ac power adapter) • Sine-wave input at 50 to 60 Hz • Input rating of the ac power adapter: 100 to 240 V ac, 50 to 60 Hz Battery pack • Li-Ion battery pack - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 26
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Go to http://support.lenovo.com. • Question: Where can I find the instructions on upgrading ore Customer Support Center? Solution: See "Getting help and service" in the Safety and Warranty Guide that If you can start the backup feature without a problem, but it fails during the backup process, try - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 28
tips on using your computer for the first time. Reading the manuals Read the manuals that come with your computer before using the computer. Connecting battery will be charged automatically. Installing the battery pack For instructions on installing the battery pack, refer to the Setup Poster Guide - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 29
To put the computer into sleep mode, do either of the following: • Click and select Sleep from the Start menu. Then click OK. • Press Fn+F1. Note: Wait until the power indicator starts blinking (indicating that the computer is in sleep state) before you move the computer. Moving the computer while - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 30
battery pack. A battery pack other than the one specified by Lenovo, or a disassembled or modified battery pack is not covered by the warranty. 14 User Guide - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 31
DANGER If the rechargeable battery pack is incorrectly replaced, there is danger of an explosion. The battery pack contains a small amount of harmful substances. To avoid possible injury: • Replace only with a battery of the type recommended by Lenovo. • Keep the battery pack away from fire. • Do - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 32
or disable the keypad, press the numeric lock key (NmLk). Note: The numeric lock indicator is on when the numeric keypad is enabled. 16 User Guide - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 33
Pro program button B580 OneKey Recovery Pro program button • When the computer is turned off, press this button and then follow the on-screen instructions to launch the recovery program. • When the computer is starting up and the Lenovo logo is displayed, press this button and then follow the - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 34
(SDHC) card • SD eXtended Capacity (SDXC) card • MultiMediaCard (MMC) Notes: • Your computer does not support the Content Protection for Recordable Media (CPRM) feature for the SD card. • When transferring data to or from the following: 1. Make sure that the card is correctly oriented. 18 User Guide - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 35
data between them. To pair the device with your computer, refer to the manuals that comes with the Bluetooth-enabled device. Using the Nvidia Optimus Graphics feature Some Lenovo notebook computers support Nvidia Optimus Graphics. Nvidia Optimus Graphics enables a dynamic switch, that is, a switch - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 36
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safe way to connect the computer to the Internet using a wired connection. Wired connection Cable Digital subscriber line (DSL) Description Cable Internet services use a cable modem connected to the residential cable TV line. DSL is a family of related technologies that bring high-speed network - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 38
wired connection might look different from the above illustrations. Software configuration Consult your Internet Service Provider (ISP) for details on how to configure your computer for wired connections. connection 1 B475 2 1 Wireless access point (not supplied) 2 Wi-Fi/WiMAX network 22 User Guide - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 39
Software configuration Consult your Internet Service Provider and search the Windows Help and Support Center for details on how to configure your computer for wireless connections. Chapter 3. Connecting to the network 23 - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 40
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Chapter 4. You and your computer This chapter provides information about accessibility and comfort. Accessibility and comfort Good ergonomic practice is important to get the most from your personal computer and to avoid discomfort. Arrange your workplace and the equipment you use to suit your - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 42
and hand position: If available, use chair arm rests or an area on your working surface to provide weight support for your arms. Keep your forearms, wrists, and hands in a relaxed and neutral (horizontal) position. Type or visual discomfort, consult a vision care specialist for advice. 26 User Guide - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 43
Attach a mechanical lock to the keyhole of the computer; then secure the chain on the lock to a stationary object. Refer to the instructions shipped with the mechanical lock. Note: You are responsible for evaluating, selecting, and implementing the locking devices and security features. Lenovo makes - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 44
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includes a set of self-recovery tools to help you diagnose computer problems, get help, and recover from system crashes, even if you cannot the computer is turned off, press this button and then follow the on-screen instructions to launch the recovery program. • When the computer is starting up and - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 46
important to create a rescue medium and a set of recovery media as early as possible and store them in a safe place for future use. 30 User Guide - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 47
not place the part on the computer cover or other metal surface. Replacing the battery Before you start, print these instructions. Note: This system does not support batteries that are not genuine Lenovo-made or authorized. The system will continue to boot, but may not charge unauthorized batteries - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 48
lock lever in the unlocked position 2 and remove the battery pack 3 . 1 3 2 4. Insert a fully charged battery until it clicks into place. 5. Slide the manual battery latch to the locked position. 6. Turn the computer over again. Connect the ac power adapter and all cables. Replacing the backup - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 49
to overheat, which can cause gasses or flame to "vent" from the battery pack or coin cell. To replace the backup battery, refer to the instructions for the computer: • "Lenovo B480 and B485" on page 33 • "Lenovo B580" on page 34 Lenovo B480 and B485 To replace the backup battery, do - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 50
screws 1 , and then remove the cover 2 . 1 1 2 2 5. Insert a screwdriver into the backup battery hole and push the backup battery until the battery pops up. 34 User Guide - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 51
. • Never remove the drive while the computer is operating, in sleep mode, or in hibernation mode. To replace the hard disk drive, refer to the instructions for the computer: • "Lenovo B480 and B485" on page 35 • "Lenovo B580" on page 37 Lenovo B480 and B485 To replace the hard disk drive - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 52
the computer cover, and then reinstall the screws to secure the cover. 12. Reinstall the battery. See "Replacing the battery" on page 31. 36 User Guide - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 53
13. Turn the computer over again. Connect the ac power adapter and all cables. Lenovo B580 To replace the hard disk drive, do the following: 1. Turn off the computer; then disconnect the ac power adapter and all cables from the computer. Wait three to five minutes to let the computer cool. 2. Close - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 54
shock hazard, disconnect the cables before opening the cover of this slot. To replace the keyboard, refer to the instructions for the computer. • "Lenovo B480 and B485" on page 38 • "Lenovo B580" on page 40 Lenovo over. 3. Remove the battery. See "Replacing the battery" on page 31. 38 User Guide - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 55
4. Remove the screws 1 , and then remove the cover 2 . 1 1 2 2 5. Remove the screws 3 . 3 3 3 6. Turn the computer over and open the display. 7. Carefully lift the keyboard until you can see how it's connected. Hold the keyboard above the computer, and then detach the connector. Chapter 7. - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 56
, and turn the computer over. 3. Remove the battery. See "Replacing the battery" on page 31. 4. Remove the screws 1 , and then remove the cover 2 . 40 User Guide - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 57
5. Remove the screws 3 . 1 1 2 2 3 3 3 6. Turn the computer over and open the display. 7. Carefully lift the keyboard until you can see how it's connected. Hold the keyboard above the computer, and then detach the connector. Chapter 7. Replacing devices 41 - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 58
cables. Replacing a memory module Before you start, print these instructions. Prerequisites for the procedure Note: The operating speed of the memory could damage the memory module. To replace a memory module, refer to the instructions for the computer. • "Lenovo B480 and B485" on page 42 • " - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 59
1. Turn off the computer; then disconnect the ac power adapter and all cables from the computer. Wait three to five minutes to let the computer cool. 2. Close the computer display, and turn the computer over. 3. Remove the battery. See "Replacing the battery" on page 31. 4. Remove the screws 1 , and - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 60
side of the socket, insert the memory module 5 into the socket at an angle of about 20 degrees; then press it in firmly. 44 User Guide - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 61
action reduces any static electricity from your body. The static electricity could damage the card. To replace the PCI Express Mini Card, refer to the instructions for the computer. • "Lenovo B480 and B485" on page 45 • "Lenovo B580" on page 47 Lenovo B480 and B485 To replace the PCI Express Mini - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 62
Mini Card with the corresponding socket. 8. Pivot the card until you can snap it into place. Then secure the card with the screw. 46 User Guide - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 63
9. Connect the antenna cables to the new PCI Express Mini Card. Be sure to attach the gray cable to the connector marked "MAIN" or "M" on the card, and the black cable to the connector marked "AUX" or "A". 10. Reinstall the computer cover, and then reinstall the screws to secure the cover. 11. - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 64
power adapter and all cables. Removing the optical drive Before you start, print these instructions. To remove the optical drive, refer to the instructions for the computer: • "Lenovo B480 and B485" on page 48 • "Lenovo 31. 4. Remove the screws 1 , and then remove the cover 2 . 1 1 2 2 48 User Guide - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 65
5. Remove the screw 3 that secures the optical drive. 3 6. Insert a screwdriver into the screw hole, and then push the optical drive 5 . 5 4 7. Insert a new optical drive, and then reinstall the screw to secure the drive. 8. Reinstall the computer cover, and then reinstall the screws to secure - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 66
the battery. See "Replacing the battery" on page 31. 10. Turn the computer over again. Connect the ac power adapter and all cables. 50 User Guide - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 67
Update device drivers and BIOS when needed. 8. Profile your machine at http://support.lenovo.com to keep up to date with current drivers and revisions. 9. , what to do if you experience a problem with your computer, and whom to call for service should it be necessary. Information about your - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 68
or bag. For outdoor use • Back up your critical data before you take your computer outdoors. • Ensure that the battery is fully charged. 52 User Guide - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 69
When installing the hard disk drives or optical drives, follow the instructions shipped with your hardware, and apply pressure only where needed on you forget a supervisor or hard disk password, Lenovo authorized service providers will not reset it, and you might have to replace problems 53 - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 70
to dry the display before closing it. Registering your computer Register your Lenovo products with Lenovo at http://support.lenovo.com. This can help authorities return your computer to you if it is lost or stolen. Registering or tape the latches to keep the display open or closed. 54 User Guide - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 71
at http://support.lenovo.com. Troubleshooting To make sure that your computer has the features that are introduced in the following sections, consult the online help or the list shipped with your computer. Battery and power problems This topic contains instructions on troubleshooting battery and - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 72
, reinstall it and recharge the battery. If it still cannot be charged, have it serviced. An ac power adapter problem Print these instructions now and keep it with your computer for reference later. The ac power adapter is blinking, press the power button to resume from the sleep mode. 56 User Guide - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 73
cursor on the screen, have the computer serviced. My screen goes blank while the computer is Problems with drives and other storage devices This section includes hard disk drive problems and optical drive problems. Hard disk drive problems Print these instructions Troubleshooting computer problems 57 - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 74
drive problems Print these instructions now servicer cannot reset your password. You must take your computer to a Lenovo authorized servicer or a marketing representative to have the system board replaced. Proof of purchase is required, and a fee will be charged for parts and service. 58 User Guide - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 75
jack is not used. • Speakers are selected as the playback device. Other problems Print these instructions now and keep it with your computer for reference later. Your computer does not For more technical support, go to http://support.lenovo.com. Chapter 9. Troubleshooting computer problems 59 - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 76
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as defined by the Bluetooth Special Interest Group SIG, it support the following profiles: • Advanced Audio Distribution Profile (A2DP) Area Networking Profile (PAN) • Phone Book Access Profile (PBAP) • Service Discovery Protocol (SDP) • Synchronization Profile (SYNC) • Video Distribution Profile - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 78
radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that to which the receiver is connected. • Consult an authorized dealer or service representative for help. 62 User Guide - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 79
Lenovo is not responsible for any radio or television interference caused by using other than specified or recommended cables and connectors or by unauthorized changes or modifications to this equipment. Unauthorized changes or modifications could void the user's authority to operate the equipment. - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 80
statement Japan compliance statement for products which connect to the power mains with rated current less than or equal to 20 A per phase Lenovo product service information for Taiwan 64 User Guide - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 81
of information technology equipment to responsibly recycle their equipment when it is no longer needed. Lenovo offers a variety of programs and services to assist equipment owners in recycling their IT products. Information on product recycling offerings can be found on Lenovo's Internet site at - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 82
pack, contact the proper person in Lenovo sales, service, or marketing, and follow that person's instructions. You also can refer to the instructions at http://www.lenovo.com/jp/ja/environment/recycle/battery fim de enviarmos as instruções para o correto descarte do seu produto Lenovo. 66 User Guide - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 83
Battery recycling information for the European Union Notice: This mark applies only to countries within the European Union (EU). Batteries or packaging for batteries are labeled in accordance with European Directive 2006/66/EC concerning batteries and accumulators and waste batteries and - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 84
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evaluate and verify the operation of any other product, program, or service. Lenovo may have patents or pending patent applications covering subject matter document are not intended for use in implantation or other life support applications where malfunction may result in injury or death to persons - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 86
countries, or both: Lenovo OneKey The following terms are trademark or registered trademarks of the Microsoft group of companies. Microsoft Windows Other company, products, or service names may be trademarks or service marks of others. 70 User Guide - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 87
Index A ac power adapter 13 B Bluetooth 19 Built-in microphone 5 C Camera 1, 18 Charging the battery 14 F Function key combinations 17 K Keyboard 16 O OneKey Recovery program button 17 P Password 27 S Security 27 T Touch pad 2 © Copyright Lenovo 2012 71 - Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 88
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- Lenovo B485 Laptop | User Guide - Lenovo B480, B485, B580 - Page 90
User Guide
Lenovo B480, B485, and B580