Tyco Electronics ELO TOUCHSYSTEMS TOUCHCOMPUTER 1520 - Manual (Page 16)

Elo TouchSystems 1520 User Guide 16
OSD Lockout
The On Screen Display (OSD) feature can be locked out (disabled) if desired. To enable
this feature, when the OSD is not present, simultaneously press the UP and Down
buttons until OSD LOCKED appears on the screen (approximately five seconds). To re-
enable the OSD function again, simultaneously press the UP and Down buttons until
OSD UNLOCKED appears on the screen (approximately five seconds).
Headphone Jack