NEC NEC MultiSync LCD1550X LCD1550X LCD1550X, Service Manual

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2-19
Note 7: A set of 2 or more dot defects in an area of 5x5 pixels
If there are 2 or more dot defects (
㽶
) in an area of 5
㬍
5 pixels, such a set of dot defects
shall be counted as one cluster.
5
㬍
5 pixels
Dot defect (
㽶
)
There should be less than 2 clusters throughout the screen area.
1 cluster
Note 8: Approach of defects of
㽲
or
㽳
in an area of 5 x 5 pixels
To be counted as NG
5
㬍
5 pixels 5
㬍
5 pixels
R G R G
R G R G
There should be no approach of
㽲
s or
㽳
in an area of 5
㬍
5 pixels.
There should be no approach of
@
s or
A
s in an area of 5
~
5 pixels.
*11) There should be less than 1 piece of spot on monochromatic picture and the size should be within 1.2mm.
*12) Uneven spot should be less than 10mm when it is judged on 128/256 gradation.
*13) Removable dusts are excluded.
*14) This standards should be applied to the display part (pixel area).