ADJUST SCREEN TIMEOUT: From the home screen, press the OK button. Press the directional buttons to navigate to and highlight the Settings app, then press the OK button.
Navigate to the Personalization tab, then navigate to and select Display.
Navigate to and select Screen Timeout, then select the desired timeout option.
ADJUST BRIGHTNESS: From the Display screen, navigate to and select Brightness then press the up and down directional buttons to adjust the brightness as desired.