Operating Your Computer 2-10Key DescriptionFn + F1 Switches the wireless LAN radio on and off.NOTE: This function works only if an optional mini PCI-Ewireless LAN card is installed.Fn + F3 Decreases the sound volume.Fn + F4 Increases the sound volume.Fn + F5 Switches the display output to one of the following whenexternal devices are connected.Upon booting the system with CRT:LCD CRTLCD & CRTNOTE: This function only applies to Plug & Play displaydevices.Fn + F6 Decreases the LCD brightness.Fn + F7 Increases the LCD brightness.Fn + F8 Switches the touchscreen on and off (option).Fn + F9 Switches the touchpad off and on.Fn + F10 Switches the system sound output off (mute) and on.Fn + F11 Switches LCD on and off.Fn + F12 Serves as the sleep button that you can define with Windows’Power Options. (See the “Power Management” in Chapter 3.)Euro SymbolYou can press the euro dollar sign on various keyboards.z To press the euro sign on a United States-International keyboard, holddown the Alt Gr key and press 5 (which has an euro sign on it).z To press the euro sign on a standard United States keyboard, holddown either of the Alt keys and type 0128 on the numeric keypad partof your keyboard.z To press the euro sign on an UK keyboard, hold down the Alt Gr keyand press 4 (which has an euro sign on it).
