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Lenovo B550, 57323748 manual „Cleaning the cover of your computer, „Cleaning your computer keyboard

Models: B550 57323748

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Cleaning the cover of your computer

Appendix B. Use, and care information

Cleaning the cover of your computer

Occasionally clean your computer as follows:

1Prepare a mixture of a gentle kitchen-use detergent (one that does not contain abrasive powder or strong chemicals such as acid or alkaline). Use 5 parts water to 1 part detergent.

2Absorb the diluted detergent into a sponge.

3Squeeze excess liquid from the sponge.

4Wipe the cover with the sponge, using a circular motion and taking care not to let any excess liquid drip.

5Wipe the surface to remove the detergent.

6Rinse the sponge with clean running water.

7Wipe the cover with the clean sponge.

8Wipe the surface again with a dry, soft lint-free cloth.

9Wait for the surface to dry completely and remove any cloth fibers from the computer surface.

Note: Shut down the computer and then disconnect the power cord before cleaning the computer.

Cleaning your computer keyboard

1 Absorb some isopropyl rubbing alcohol on a soft, dust-free cloth.

2 Wipe each keytop surface with the cloth. Wipe the keys one by one; if you wipe several keys at a time, the cloth may hook onto an adjacent key and possibly damage it. Make sure that no liquid drips onto or between the keys.

3 Allow to dry.

4 To remove any crumbs and dust from beneath the keys, you can use a camera blower with a brush or cool air from a hair drier.

Note: Avoid spraying cleaner directly on the display or the keyboard.

Cleaning your computer display

1Gently wipe the display with a dry, soft lint-free cloth. If you see a scratchlike mark on your display, it might be a stain transferred from the keyboard when the cover was pressed from the outside.

2Wipe or dust the stain gently with a soft, dry cloth.

3If the stain remains, moisten a soft, lint-free cloth with water or a 50-50 mixture of isopropyl alcohol and water that does not contain impurities.

4Wring out as much of the liquid as you can.

5Wipe the display again; do not let any liquid drip into the computer.

6Be sure to dry the display before closing it.

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Lenovo B550 manual „Cleaning the cover of your computer, „Cleaning your computer keyboard, „Cleaning your computer display

Contents

User Guide Lenovo B550First Edition January Copyright Lenovo NotesDear user Dear user Explanation of hard disk capacityAppendix F. Features and ContentsChapter 1. Getting to know your Chapter 6. Upgrading and replacingImportant safety information Important safety information„Read this first DangerCorrect usage procedures Important safety informationDanger DangerService and upgrades Important safety informationDanger Top view Chapter 1. Getting to know your computerChapter 1. Getting to know your computer aPower buttonc System status select models onlya Kensington slot Chapter 1. Getting to know your computerb Fan louvers c RJ-45porta USB port Chapter 1. Getting to know your computerb Optical drive Right-sideviewChapter 1. Getting to know your computer bIntegrated wireless device switchaSpeakers cMicrophone jack dHeadphone jackb Battery pack a Battery latchd Battery latch Chapter 1. Getting to know your computer„Connecting to the power Chapter 2. Learning the basics„Configuring the operating system Installing the battery packChapter 2. Learning the basics „Shutting down your computerPutting your computer into sleep state „Checking battery status Using AC adapter and battery„Charging the battery „Removing the battery packUsing the touchpad „Handling the batteryChapter 2. Learning the basics a Touchpad„Numeric keypad Using the keyboard„Function key combinations Chapter 2. Learning the basicsChapter 2. Learning the basics Enter sleep modeOneKey Rescue system button Chapter 2. Learning the basicsSpecial button a Caps lock indicator System status indicatorsb Num lock indicator c Power status indicator„Using passwords „Using VeriFace„Attaching a security lock not supplied Chapter 2. Learning the basics„Connecting a universal serial bus USB device Connecting external devicesEnabling Bluetooth communications Chapter 2. Learning the basics„Software configuration Chapter 3. Using the Internet„Hardware connection Cable„Using Wi-Fi/WiMAX Wireless connection„Software configuration Chapter 3. Using the Internet„Introduction Chapter 4. OneKey Rescue systemFrequently asked questions Chapter 5. TroubleshootingHow can I prevent problems with my computer? Where are the recovery discs?What can I do if the backup process fails? Chapter 5. TroubleshootingDisplay problems Chapter 5. TroubleshootingA Password problem TroubleshootingSleep or hibernation problems Chapter 5. TroubleshootingComputer screen problems The screen is blankBattery problems Chapter 5. Troubleshooting Sound problemsA hard disk drive problem A startup problemYour computer does not respond Chapter 5. Troubleshooting Other problemsThe connected external device does not work Replacing the battery Chapter 6. Upgrading and replacing devicesTo replace the battery, do the following Chapter 6. Upgrading and replacing devices Replacing the hard disk driveHandling a hard disk drive To replace the hard disk drive, do the following5Pull the tab in the direction shown by arrow c Chapter 6. Upgrading and replacing devicesChapter 6. Upgrading and replacing devices To install an SO-DIMM,do the followingChapter 6. Upgrading and replacing devices 9Tighten the screws 0Reinstall the batterya b a Chapter 6. Upgrading and replacing devices Removing the optical driveTo remove the optical drive, do the following Chapter 6. Upgrading and replacing devices Setup PosterCalling the customer support center Appendix A. Getting help and serviceGetting help around the world Appendix A. Getting help and serviceAppendix A. Getting help and service Lenovo warranty service telephone numbersWarranty Service Telephone Numbers „Be careful about where and how you work Appendix B. Use, and care informationCaring for your computer „Notice of static-electricity„Carry your computer properly „Be gentle with your computer„For outdoor use „Handle storage media and drives properly„Take care in setting passwords „Data safety„Other important tips Appendix B. Use, and care information„Ergonomic information Accessibility and comfort„What if you are traveling? „Questions about vision?Appendix B. Use, and care information „General tips for maintenance„Cleaning your computer keyboard „Cleaning the cover of your computer„Cleaning your computer display Appendix B. Use, and care information„What this warranty covers Appendix C. Lenovo limited warranty„How to obtain warranty service Appendix C. Lenovo limited warranty „Replacement of a product or part„Your additional responsibilities information.”Appendix C. Lenovo limited warranty „What this warranty does not cover„Use of personal information „Limitation of liabilityAppendix C. Lenovo limited warranty „Dispute resolution„Other rights „European Economic Area EEA„Suplemento de Garantía para México Appendix C. Lenovo limited warrantyManufactured by: China Tel: +86-512-5735-5000 Marketed byWarranty information Appendix C. Lenovo limited warrantyWarranty period Types of warranty serviceAppendix C. Lenovo limited warranty „Types of warranty service1 Customer Replaceable Unit “CRU” Service 2 On-siteService5Product Exchange Service Appendix C. Lenovo limited warrantyAppendix D. Customer replaceable units CRUs Lenovo United States, Inc Appendix E. Notices1009 Think Place - Building One Morrisville, NC U.S.A Attention: Lenovo Director of LicensingAppendix E. Notices „Export classification noticeAppendix E. Notices ENERGY STAR model informationWindows Windows XP„Wireless interoperability Wireless related informationAppendix E. Notices „Usage environment and your health „Safety information related to Mobile BroadbandAppendix E. Notices „Note to CATV system installer „Products with television tuner options installed„Note to CATV system installer Appendix E. NoticesAppendix E. Notices This warranty does not cover the followingDanger „Federal Communications Commission FCC Statement Electronic emissions noticesAppendix E. Notices „German Class B Compliance Statement „Japanese VCCI Class B Statement „Lenovo Product Service InformationAppendix E. Notices „Korea Class B Türkiye EEE Yönetmeliğine Uygunluk BeyanıWEEE and recycling statements „General recycling statementEU WEEE statements Japan recycling statements„Disposing of a Lenovo Computer Components Appendix E. NoticesNotice for users in the U.S.A Notice on deleting data from your hard diskAppendix E. Notices Model Name: Lenovo B550 Appendix F. Features and specificationsForm Factor SystemLenovo Veriface OneKey Index Index Page DO NOT RETURN IT TO THE STORE If your product is not working correctlyP/N: 147003161-1.1Printed in China New World. New Thinking.TMLenovo China