OSD Lock Settings
You have the option of using the On Screen Display (OSD) locking feature, OSD LOCK, to prevent unwanted changes to the current image settings.
•OSD Lock: Press and hold the [1] and [▼] buttons on the face of the monitor for 5 seconds. The message “OSD LOCK” will then display briefly, indicating that the OSD image settings are now locked.
•OSD Unlock: Press and hold the [1] and [▼] buttons again for 5 seconds. The message “OSD UNLOCK” will then display briefly, indicating that the OSD image settings are now unlocked.
ViewSonic P220f 6