How To Turn Backlight On Dell Latitude E5420

mdlJoelDe,

Below are keyboard key combinations that perform functions on your system.

System Functions <Ctrl><Shift><Esc> Opens the Task Manager window. <Fn><Esc> Activates User standby state. <Fn><F11> Enables or disables Number lock. <Fn><F12> Enables or disables Scroll lock. <Fn><F7> Launches Dell® Control Point application. <Fn><←> Enables or disables the ambient light sensor. <Fn><→> Activates backlight keyboard mode. Display Functions <Fn><F8> Switches the video image to the next display option. The options include the integrated display, an external monitor, and both displays simultaneously. <Fn><↓> Decreases brightness on the integrated display only (not on an external monitor). <Fn><↑> Increases brightness on the integrated display only (not on an external monitor). Power Management <Fn><F1> Activates Sleep mode request. <Fn><F2> Enables or disables the battery charging system. <Fn><F3> Allows the user to view the amount of charge remaining in the battery. Speaker Functions <Fn><End> Mutes or unmutes the speakers. <Fn><PgDn> Decreases audio volume. <Fn><PgUp> Increases audio volume.

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