Nothing Display On Screen (Screen Is Black, Color Of Led Is Blue) - NEC MultiSync 20WGX2 Series Service Manual

2. Nothing Display on Screen (Screen is Black, Color of LED is Blue)

Is backlight turned on?
OK
Does computer output RGB video signals?
OK
Check OSM menu is displayed on screen
when you push the "MENU" key.
OK
Proceed "4. Abnormal screen"
section.
NG Refer "3. Checking the backlight unit"
section
1) Change pattern of video signal
output on the host.
NG
2) Reconnect the video cable.
3) Change the video cable.
Check if the LCD video signal cable
NG is connected between the MAIN PCB
and LCD module.
OK
Next Page
6 - 3
Failure Point
NG
The Cable is disconnected.