Lenovo IDEAPAD Y471A User Manual download pdf (Page 22)

Chapter 2. Learning the basics

 Thermal management button

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.

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: 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.

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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Lenovo IDEAPAD Y471A User Manual Page 22