This Test is for testing all of the buttons and the LED's on the Jp8k. you will get the display "[2] SW&LED TEST (43)  ooo oo". To complete this test go through and press all of the buttons, some of them require pressing twice (the ones with the combined red and green or yellow led) each time you press a button the counter will decrement by one and the keyboard will make a beep, for the buttons which do not have a LED on the LCD there are the five "o", which when these buttons are pressed will disappear.