Samsung XL20 User Manual download pdf (Page 28)

- MENU button

Menu Description

Locked

This is the function that locks the OSD in order to keep the current states of

settings or prevent others from adjusting the current settings.

Lock

: Hold down the MENU button for more than five (5) seconds to

activate the OSD adjustment lock function.

Unlock

: Hold down the MENU button for more than five (5) seconds to

deactivate the OSD adjustment lock function.

You can adjust only the brightness and contrast of the

monitor with the OSD adjustment locking feature.

Contrast

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Samsung XL20 User Manual Page 28