Samsung SyncMaster 320P Owner's Manual page 54

Available Modes
OSD Description
MDC Moves to the Multi Control OSD screen.
LOCK Sets the Safety Lock function.
1) Lock On
: It will be locked.
2) Lock Off
: It wil be unlocked.
: PC / BNC / DVI
When setting the Lock function, you can only
operate the power and lock buttons on the remote
control and set.
The preset password on the monitor is "0000".
: AV : S-Video : Component
Play
1) Lock On
2) Lock Off