LG LCD Monitor E2541V - Manual (Page 10)

9
Control Panel Functions
Front Panel Controls
MENU Button 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 several seconds.
The message "OSD LOCKED" should appear.
You can unlock the OSD controls at any time by pushing
the MENU button for several seconds. The message
"OSD UNLOCKED" should appear.
Only for HDMI input
For D-SUB and DVI input