12Get startedTurn on or offPress and hold [ ] to turn the device on or off.[● ] will turn blue and the main menu screen willdisplay.Lock or unlock the touch screenWhen you do not use the screen for a certainperiod of time or press [ ] while using the device,the touch screen and buttons will be locked.Press [ ] to unlock the touch screen andbuttons.You can change the time delay before the touch screen andbuttons are locked (Sleep Time Setting → p. 35).Turn on the device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .