Philips 170S8FB/00, Service Manual

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HUDSON 8
4.4 Brightness uniformity
Set contrast at 100% and turn the brightness at 100%.
Apply the Fig 1, it should comply with the following formula:
B_min
X 100% >75%
B_max
Where B_max =Maximum brightness, B_min = Minimum brightness
4.5 Check Cross talk (S)
Apply Pattern 2. Set contrast and brightness at 100 %.
Measure YA. Then output Pattern 3 and measure YB.
the cross talk value :
ABS ( YA - YB )
⎯⎯⎯⎯⎯⎯⎯⎯⎯
X 100% < 1.5 %
YA
4.6 White color adjustment
There are seven factory preset white color 11500K, 9300K, 8200K, 7500K, 6500K, sRGB, 5000K
Apply full gray64 pattern, with brightness in 100 % position and the contrast control at 50 % position.
The 1931 CIE Chromaticity (color triangle) diagram (x ,y) coordinate for the screen center should be:
Product specification
CIE coordinates (x,y)
11500K
x = 0.272 ± 0.02
y = 0.283 ± 0.02
9300K
x = 0.283 ± 0.02
y = 0.297 ± 0.02
8200K
x = 0.292 ± 0.02
y = 0.307 ± 0.02
7500K
x = 0.299 ± 0.02
y = 0.315 ± 0.02
6500K/sRGB
x = 0.313 ± 0.02
y = 0.329 ± 0.02
sRGB
x = 0.313 ± 0.02
y = 0.329 ± 0.02
5000K
x = 0.346 ± 0.02
y = 0.359 ± 0.02
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