Samsung SyncMaster 400MX User Manual page 165

→ , / , → ENTER
Turns the LCD Display off automatically at a preset time.
Menu Transparency
MENU → → → → ENTER → [Setup] → → → ENTER → [Menu Transparency]
→ , → ENTER
Change the transparency of the background of the OSD.
1. High
2. Medium
3. Low
4. Opaque
Safety Lock PIN
MENU → → → → ENTER → [Setup] → → → → ENTER → [Safety Lock PIN ]
→ [0 9] → [0 9] → [0 9]
The password can be changed.
Energy Saving
MENU → → → → ENTER → [Setup] → → → → → ENTER → [Energy Saving]
Adjusting the LCD Display