LG L1730SF - Manual (Page 8)

A7
Control Panel Functions
MENU SET/AUTO
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Front Panel Controls
Bottom
Buttons Use these buttons to select or adjust functions in the On
Screen Display.
MENU Button Use this button to enter or exit the On Screen Display.
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Control Function
OSD LOCKED/UNLOCKED
This function allows you to lock the current control
settings, so that they cannot be inadvertently changed.
Press and hold the MENU button for 5 seconds. The
message "OSD LOCKED" should appear.
You can unlock the OSD controls at any time by pushing
the MENU button for 5 seconds. The message "OSD
UNLOCKED" should appear.
For more information, refer to page A14.