NEC Multi Sync EA221WM Service Manual page 44

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Fig. 1 Bright Dot Defect Definition
【Bright Dot Definition】
-. Judge the bright dot
``
Dot
Detect
-. Criteria for bright dot defect
*. Judge the bright dot as its brightness itself.
Color
Red
Green
Blue
-. All bright dot defect must be judged at black pattern
*. Judge the bright dot compare to each criteria of color's brightness.
1st
Over
0.5
Check
Size
2nd
Below
0.5
Good
Brightness ≤ 18/64 Gray
Brightness ≤ 28/64 Gray
Dot defect count
Red: under 18/64
Green: under 18/64
Check each
Blue: under 28/64
brightness
h
it i
Red: under 18/64
Green: under 18/64
Blue: under 28/64
NG
Brightness >18/64 Gray
Brightness >28/64 Gray
5-6
Bright Dot
Low Bright Dot

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