Nothing Displays On Screen (Screen Is Black, Color Of Led Is Green) - NEC MultiSync LCD1550V Service Manual

2. Nothing displays on screen (Screen is black, color of LED is green)

Is backlight lit?
NG
OK
Does computer output RGB
video signals?
NG
OK
Check OSM menu is displayed on screen
when you push the "NEXT, Adjust or
Control" key.
NG
OK
Proceed section 4
"Abnormal screen".
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Refer to section 3
"Checking the backlight unit.
Check the video cable for failure.
Check the host for output signal with all black only.
1) Change pattern of video signal output on the host.
2) Reconnect the video cable.
3) Change the video cable.
Check if the LCD video signal cable is connected
between the MAIN board and LCD module.
NG
OK
Next page
6-3
Failure point
The cable is disconnected.