Samsung 400UXN - Manual (Page 67)

MENU → , → ENTER → , → ENTER → ENTER → , → ENTER
Signal Control
Adjusts the Gain and Sharpness manually.
MENU → , → ENTER → , → ENTER → , → ENTER → ENTER → , → ENTER
→ , → , → ENTER
Size
The Size can be switched.
1. 16:9
2. 4:3
MENU → , → ENTER → , → ENTER → , → ENTER
Adjusting the LCD Display