How do I change the Power Off and Sleep Timer settings?

See below.

Changing the Power Off Timer Settings

You can have the product turn off automatically if it is not used for a specified period of time.
1. Press the  home button, if necessary.
2. Select Settings.
3. Select General Settings. You see a screen like this:
   
   
4. Select Basic Settings.
5. Select Power Off Timer, then select a time period between 30minutes and 12h (12 hours).

Changing the Sleep Timer Settings

You can adjust the time period before your product enters sleep mode and turns off the LCD screen.
1. Press the  home button, if necessary.
2. Select Settings.
3. Select General Settings. You see a screen like this:
   
   
4. Select Basic Settings.
5. Select Sleep Timer. You see a screen like this:
   
   
6. Do one of the following:
   • Press the - or + icon to decrease or increase the number of minutes.
   • Press the number of minutes on the LCD screen, select the number of minutes from the on-screen keypad, and press OK.
7. Select OK.