Samsung 400UXN - Manual (Page 90)

Lamp Control
Adjusts the inverter lamp in order to reduce energy consumption.
Note
This function does not operate when Dynamic Contrast is set to On in AV, S-Video, Component
modes.
MENU → , → ENTER → , → ENTER → ENTER → , → ENTER
Power On Adjustment
Adjusts the Power On time for the screen.
Caution: Set the Power On time to be loger to avoid overvoltage.
MENU → , → ENTER → , → ENTER → ENTER → , → ENTER
Adjusting the LCD Display