Service Manual
8-3
8.1.2 Quality standards
(1): Defect standard
Item
Definition
Standard
Bright
spot
When a pixel is partially or completely
transmittable during an entirely black or a
single-color raster.
Refer to the bright spot
and the dark spot
standards.
Point
defects
Dark
spot
When a pixel is a partially or completely
turned off during an entirely white or a
single-color raster.
Line defect
Two or more continuous point defects.
0
Item
Standard
String shaped, partially uneven
Quality of external appearance
Based on the worst-case sample
(2): Uniformity standards (Ta=25
°
C)
(3): Dirt standards
·
Dirt between glass surface and polarizer
·
Dirt in polarizers
Specification: Allowable dirt size is less than 100
m
m.
This definition is measures by the following formula.
