Skyworth 42E68 Instruction Manual page 46

factory, select
menu, press → button to begin auto adjust. When it is finish, it will
show "OK" or "FAILE". If "FAILE" is showed, you need to try
again.
NOTE: YPBPR ADC need to do twice by use 576P and 720P
signal separate.
VGA source ADC:
Switch to PC source, input tessellated white and black signal,
enter factory, select
menu, press → button to begin auto adjust. When it is finish, it will
show "OK" or "FAILE". If "FAILE" is showed, you need to try again.
"AUTO ADC" item in the
"AUTO ADC" item in the
"ADC CALIBRATION"
"ADC CALIBRATION"