From ViewSonic User Guide Database
Hot Keys
When the On-Screen Display (OSD) Menu is off, you can quickly access special functions by using the Joy Key.
Key
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Description
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Move and hold the Joy Key for five seconds to lock/unlock the OSD Menu.
When the menu appears on the screen, continue holding the key for 10 seconds to lock/unlock the OSD Menu.
If the OSD Menu is locked, the below message will appear on the screen:
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Move and hold the Joy Key to lock/unlock the Power button.
When the menu appears on the screen, continue holding the key for 10 seconds to lock/unlock the Power button.
If the Power button is locked, the below message will appear on the screen:
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Move and hold the Joy Key for five seconds to display/hide the boot up screen when the device is turned on.
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