Nothing is displayed on the screen.
7-8 Nothing is displayed on the screen when turning power on.
The main causes when nothing is displayed on the screen when you turn the power on:
・ Blowout of the fuse
・ Failure of the switching power supply
・ Failure of the power supply board
・ Failure of the main control board
・ Failure of LCD or LCD harness
YES
Is screen display normal?
Replace the main control board.
Is screen display normal?
Does LED next to the operation switch blink
and 3 axes motor start initializing when the
power is on?
No power outlet
【Refer to 7-19】