Brightness Uniformity; Check Cross Talk; White Color Adjustment; Mechanical Characteristics - Philips 170V7 Service Manual

17" LCD Color Monitor

4.4 Brightness uniformity

Set contrast at 100% and turn the brightness to get average above 200 nits at centre of the screen.
Apply the Fig 1; it should comply with the following formula:
Where B_max =Maximum 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 three factory preset white color 9300K, 6500K, sRGB.
Apply full white 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 spec.
9300K CIE coordinates
6500K/ sRGB CIE coordinates
sRGB CIE coordinates
Production alignment spec.
9300K CIE coordinates
6500K/ sRGB CIE coordinates
sRGB CIE coordinates
Quality Inspection spec.
9300K CIE coordinates
6500K/ sRGB CIE coordinates
sRGB CIE coordinates

5. Mechanical characteristics

5.1 Cosmetic -
5.2 Mechanical data files -
5.3 Location of Philips logo -
5.4 The gap between Panel and front bezel < 0.8 mm
B_min
B_max
B_min = Minimum brightness
ABS( YA - YB )
⎯⎯⎯⎯⎯⎯⎯⎯⎯ X 100%
YA
Philips ID
ProE files required
Per Philips make-up sheet
X 100% >75%
<
X = 0.283 ± 0.02
X = 0.313 ± 0.02
X = 0.313 ± 0.02
X = 0.283 ± 0.005
X = 0.313 ± 0.005
X = 0.313 ± 0.005
X = 0.283 ± 0.015
X = 0.313 ± 0.015
X = 0.313 ± 0.015
81
2.0 %
Y = 0.297 ± 0.02
Y = 0.329 ± 0.02
Y = 0.329 ± 0.02
Y = 0.297 ± 0.005
Y = 0.329 ± 0.005
Y = 0.329 ± 0.005
Y = 0.297 ± 0.015
Y = 0.329 ± 0.015
Y = 0.329 ± 0.015
170V7