Toshiba -- When the sounds turn off, long pressing on 8 for 3 seconds, it sounds a long beep and the sound turn off. All the buttons has no beep when they are p

Toshiba -- When the sounds turn off, long pressing on 8 for 3 seconds, it sounds a long beep and the sound turn off. All the buttons has no beep when they are pressed, including the ending cooking sounds is turn off too.