NEC MultiSync LCD1550V Service Manual

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NEC MultiSync LCD1550V Service Manual Manual pdf 57 page image

6-32. Nothing displays on screen (Screen is black, color of LED is green)NGOKNGOKOKNGNGOKIs backlight lit?Refer to section 3“Checking the backlight unit.Does computer output RGBvideo signals?1) Change pattern of video signal output on the host.2) Reconnect the video cable.3) Change the video cable.Check OSM menu is displayed on screenwhen you push the “NEXT, Adjust orControl” key.Check if the LCD video signal cable is connectedbetween the MAIN board and LCD module.Failure pointThe cable is disconnected.Next pageProceed section 4“Abnormal screen“.Check the video cable for failure.Check the host for output signal with all black only.