Image Noise - NEC MultiSync LCD1920NX User And Service Manual

3.3 Image noise

Is the image still unclear even though
H-SIZE and FINE TUNE are adjusted?
NG
Replace the video cable that is connected
to the PC.
NG
Is there any change in the noise when the
contrast is adjusted?
NO
Analog : Confirm the input signal level of D-SUB (Pin10, Pin6 of IC06)
Digital : 1) Confirm the Video card Driver IC frequency if over specification.
2) Check DVI signal cable.
OK
OK
YES
Failure point
6-8
Normal
Normal
Failure point
Analog : Check power, output signal and
peripheral circuit of IC01.
Digital : Check power, output signal and
peripheral circuit of IC11.