Please check whether or not the song library serial number displayed on the TV is the same as the serial number on your guarantee (card). If the serial number is not the same, it is an occurrence of a song library malfunction. If it is the same, please determine whether it is connected to the coin slot. Operation under the connection of the coin slot will result in failure to restart the machine (you can only enter 5 digits when connected to a coin slot, data reorganization requires 9 digits). The password is a problem with the power supply for the motherboard password memory. This is not normal and it should be sent for repairs immediately.
