HP ProBook 450 G5, Руководство по техническому обслуживанию и ремонту

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Action keys
An action key performs the function indicated by the icon on the key. To determine which keys are on your
product, see
Special keys on page 13 .
▲ To use an action key, press and hold the key.
Icon Description
Switches the screen image among display devices connected to the system. For example, if a monitor is
connected to the computer, repeatedly pressing the key alternates the screen image from computer display
to monitor display to simultaneous display on both the computer and monitor.
Decreases the screen brightness incrementally as long as you hold down the key.
Increases the screen brightness incrementally as long as you hold down the key.
Mutes or restores speaker sound.
Decreases speaker volume incrementally while you hold down the key.
Increases speaker volume incrementally while you hold down the key.
Mutes the microphone.
Turns the keyboard backlight off or on.
NOTE: To conserve battery power, turn off this feature.
Turns the wireless feature on or off.
NOTE: A wireless network must be set up before a wireless connection is possible.
Initiates Sleep, which saves your information in system memory. The display and other system components
turn off and power is conserved. To exit Sleep, briefly press the power button.
CAUTION: To reduce the risk of information loss, save your work before initiating Sleep.
NOTE: The action key feature is enabled at the factory. You can disable this feature by pressing and holding
the fn key and the left shift key. The fn lock light will turn on. After you have disabled the action key feature,
you can still perform each function by pressing the fn key in combination with the appropriate action key.
14 Chapter 2 Components