Lenovo Z475, Z575 manual Performing dust cleaning

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Chapter 2. Learning the basics

Performing dust cleaning

Dust tends to accumulate around the heat sink of the computer’s CPU over time, reducing the dissipation capability of the heat sink. You can reduce the amount of accumulated dust by performing dust cleaning. To perform dust

cleaning, repeatedly press the thermal management button until is highlighted. Dust cleaning will start after three seconds.

When dust cleaning is activated, the heat dissipation fan spins at high and low speed alternatively to allow dust to be discharged. A complete dust cleaning process takes several minutes to complete. You can cancel the process at any time by switching the computer to standard, super silent or efficient thermal dissipation mode.

Upon completion, the computer returns to the previous mode when dust cleaning was activated.

Note: We recommend you perform dust cleaning at least once a month to reduce the amount of dust accumulation around the heat sink. Place your computer in a clean environment with good ventilation when performing dust cleaning.

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Contents IdeaPad Z475/Z575 Regulatory Notice First Edition April Copyright Lenovo Contents Page Top view Getting to know your computer„ Z475 Getting to know your computer „ Z575Speakers Power button OneKey Rescue system button Camera Wireless module antennas Computer displayGetting to know your computer Integrated Thermal management buttonFan louvers Left-side viewVGA port RJ-45 portCombo port USB port ESATA/USB Getting to know your computerOptical drive „ Z475 „ Z575Right-side view Getting to know your computer RJ-45 port Front view Integrated wireless device switch Memory card slotBottom view Battery pack „ Configuring the operating system „ Connecting to the powerLearning the basics „ Reading the manualsLearning the basics „ Shutting down your computerPutting your computer into sleep state „ Charging the battery „ Checking battery status„ Handling the battery „ Removing the battery packUsing the touchpad Z575 Using the keyboard„ Numeric keypad Z475 „ Function key combinations Learning the basics Removing a memory card Connecting external devicesInserting a memory card „ Connecting USB devices Enabling Bluetooth communications on your computer „ Connecting Bluetooth enabled devices on select modelsSpecial keys and buttons „ Volume buttons b~d„ OneKey Rescue system button a „ OneKey Theater button e Super silent mode Standard modeEfficient thermal dissipation mode „ Thermal management button fPerforming dust cleaning System status indicators Securing your computer „ Using VeriFace„ Attaching a security lock not supplied „ Using passwords Wired connection Connecting to the Internet„ Hardware connection „ Software configurationConnecting to the Internet Wi-Fi WiMAX Wireless connectionHardware connection Software configurationOneKey Rescue system OneKey Rescue system„ Introduction OneKey Rescue system „ Creating a recovery discsOneKey Rescue system Frequently asked questions TroubleshootingWhere can I find warranty information? Display problems TroubleshootingSleep or hibernation problems Troubleshooting Password problemsKeyboard problems Puter does not work Computer screen problemsBattery problems Troubleshooting Sound problemsHard disk drive problem Startup problemRespond Troubleshooting Other problemsAppendix A. CRU instructions Replacing the battery packAppendix A. CRU instructions Handling a hard disk drive Replacing the hard disk driveZ475 Z575 Pull the tab in the direction shown by arrow d Take out the hard disk drive secured in a metal frame e Appendix A. CRU instructions Replacing memory Appendix A. CRU instructions Appendix A. CRU instructions Removing the optical drive Setup Poster User Guide Trademarks Page New World. New Thinking.TM

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