Picture Test Screen
Press Down, Down, Up, Up, Right, Left, Right, Left, Triangle, Square, at the title screen
Sound Test
Press X, X, Triangle, Triangle, Circle, Square, Circle, Square, Up and Left at the title.
Picture Test Screen
Press Down, Down, Up, Up, Right, Left, Right, Left, Triangle, Square, at the title screen
Sound Test
Press X, X, Triangle, Triangle, Circle, Square, Circle, Square, Up and Left at the title.