When observing the door on the bright lights, but closed off, if it continues to operate, press the Menu button, can display a variety of functions, but the function of the corresponding rotation function button lights do not change color <without scrolling color>, ie no response. Press the start button does not react, the aircraft and Seoul to start working properly once the normal operation of all key buttons can be flexible. Remove the coding switch checked, no problem, for the 32.67M crystal on OK.a7Sservice manual download site