Essilor AKR 750 - Page 20

20
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 LCD harness normal?
Replace the LCD harness.
Replace the LCD.
Is screen display normal?
Replace the main control board.
Is screen display normal?
NO
YES
YES
NO
NO
YES
OK
Does LED next to the operation switch blink
and 3 axes motor start initializing when the
power is on?
NO
No power outlet
【Refer to 7-19】