Dell SE2422HX Monitor Users Guide - Page 38
To unlock the button(s)., Use this option to unlock OSD menu function.
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Options 4 Built-in Diagnostics Description Use this option to run the built-in diagnostics, see Built-in diagnostics. To unlock the button(s). Press and hold Built-in diagnostics button (button 4) for four seconds until a menu appears on the screen. The following table describes the options to unlock the frontpanel control buttons. Dell 24 Monitor Select Option: Dell 24 Monitor Select Option: Dell 24 Monitor Select Option: Options 1 Description Use this option to unlock OSD menu function. Menu Buttons unlock 2 Use this option to unlock power button to turn off the monitor. Power Button unlock 3 Use this option to unlock OSD menu and power button. Menu and Power Buttons unlock 4 Use this option to run the built-in diagnostics, see Built-in diagnostics. Built-in Diagnostics 38 | Operating the monitor
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