21 inch assembly machine LA76931K 7N 5AM3 into the bus method:
The remote control is 55L7, and the remote control equipped with the machine is 57S4;
So can only enter the FACTORY menu, and can not enter the debugging project bar, into the bus method is;
Turn the volume of the color TV to 00, press the recall key on the remote control, then press the volume - key on the panel, and then the recall key on the remote control;
Enter the FACTORY menu, WOOF enters the white balance debugging, DISP enters the debugging menu, and the size of the left and right keys is adjusted.