Check Cross Talk (S); White Color Adjustment - Philips 190S8FS/00 Service Manual

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 :

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
6500K/sRGB
B_min
B_max
ABS ( YA - YB )
⎯⎯⎯⎯⎯⎯⎯⎯⎯
11500K
9300K
8200K
7500K
sRGB
5000K
X 100% >75%
X 100%
YA
(x,y)
x = 0.272 ± 0.02
y = 0.283 ± 0.02
x = 0.283 ± 0.02
y = 0.297 ± 0.02
x = 0.292 ± 0.02
y = 0.307 ± 0.02
x = 0.299 ± 0.02
y = 0.315 ± 0.02
x = 0.313 ± 0.02
y = 0.329 ± 0.02
x = 0.313 ± 0.02
y = 0.329 ± 0.02
x = 0.346 ± 0.02
y = 0.359 ± 0.02
101
HUDSON 8
< 1.5 %
101