Philips 245P2EB/69, Service Manual

Page: 78 / 97

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ʳʳʳʳʳʳʳʳʳʳʳʳʳʳʳʳʳʳʳʳʳ˃ˁ˄ 245P2 24W” Standard LCD Monitor
2010/08/02 PHILIPS 17 of 27
78 245P2 LCD
General Product Specification
4 Visual characteristics
4.1 Test conditions
Unless otherwise specified, this specification is defined
under the following conditions.
(1) Input signal : As defined in , 1920 x 1200
non-interlaced mode1920 x 1200@60Hz, signal sources must have 75
ohm output impedance.
(2) Luminance setting : controls to be set to 300 nits (typical) with
full screen 100 % duty cycle white signal
(3) Warm up: more than 30 minutes after power on with signal supplied.
(4) Ambient light: 400 -- 600 lux.
(5) Ambient temperature: 20 ± 5 q C
4.2 Brightness
To follow Panel specification.
4.3 Image size
Actual display size 518.4 x 324 mm
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_max - 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 three factory preset white color 9300K, 6500K, sRGB