Lenovo Understanding Thermal Management for Enhanced Performance
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Chapter 2. Learning the basics

„Thermal management button f

The thermal management button can be used to switch the computer between different work modes and thus control the speed at which the heat dissipation fan spins. You can choose between standard, super silent, or efficient thermal dissipation mode. You can also activate the dust cleaning feature by pressing and releasing the thermal control button.

Standard mode

Standard mode is the factory default mode. It is the recommended work mode for most programs.

Super silent mode

If your computer is not running large programs and you want a silent work environment, switch your computer to super silent mode. To switch to super silent mode, repeatedly press the

thermal management button until is highlighted. The computer will switch to super silent mode after three seconds.

Note: The heat dissipation fan spins at relatively low speeds in super silent mode, and thus dissipates less heat than in other modes. If large programs are running, the system may lower the voltage of the CPU (central processing unit) automatically to decrease the heat produced by the CPU. Consequently, you might experience lower system performance when the computer is running in super silent mode.

Efficient thermal dissipation mode

If large programs are running, switch your computer to efficient thermal dissipation mode to allow more efficient thermal dissipation. To switch to efficient thermal dissipation mode,

repeatedly press the thermal management button until is highlighted.

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 Y470/Y570 Regulatory Notice First Edition December Copyright Lenovo Contents Page „ Y470 Getting to know your computer„ Y570 Wireless moduleGetting to know your computer Antennas Computer displayIndicators Volume buttons Getting to know your computer Power buttonOneKey Rescue System buttonUSB combo port USB port RJ-45 portMicrophone jack Getting to know your computer Headphone jack „ Y470 „ Y570 AC power adapterUSB combo port TV-in jack On select models Optical driveDevice switch Processing Unit Switch on select ModelsGPU Graphics Bottom view Battery pack Battery latch manual „ Configuring the operating system „ Connecting to the powerLearning the basics „ Reading the manualsPutting your computer into sleep state Learning the basicsShutting down your computer „ Charging the battery „ Checking battery status„ Removing the battery pack „ Handling the batteryTouchpad button Y470 „ Numeric keypadY570 „ Function key combinations Learning the basics „ Connecting a universal serial bus USB device „ Using memory cards not suppliedInserting a memory card Removing a memory cardEnabling Bluetooth communications on your computer „ Connecting a Bluetooth deviceMute/Unmute Volume down Volume up „ Volume buttons b- d„ OneKey Rescue system button a „ OneKey Theater button e Super silent mode Standard modeEfficient thermal dissipation mode Performing dust cleaningSystem status indicators Page „ Using passwords „ Using VeriFace„ Attaching a security lock not supplied Enabling Nvidia Optimus on select models Enabling 3D Vision „ Using 3D Vision on your computer„ Software configuration Connecting to the Internet„ Hardware connection CableConnecting to the Internet „ Using Wi-Fi/WiMAXEnabling wireless connection Software configuration„ Introduction OneKey Rescue systemFrequently asked questions TroubleshootingWhen do I need to restore the system to the factory status? TroubleshootingPassword problem Display problemsKeyboard problems Computer screen problems Troubleshooting Sleep or hibernation problemsSound problems Hard disk drive problem Troubleshooting Battery problemsStartup problem OneKey Rescue system problemsTroubleshooting Other problems Appendix. CRU instructions Handling a hard disk drive Appendix. CRU instructionsAppendix. CRU instructions Appendix. CRU instructions Appendix. CRU instructions Sdram Appendix. CRU instructions Appendix. CRU instructions Removing the optical drive Trademarks Page New World. New Thinking.TM
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