ViewSonic VP231WB - 23" LCD Monitor, Service Manual

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5.2.1 Dusb Video alignment.
5.2.1.1 Preset condition.
5.2.1.1.1 Setting the contrast to 70%
,
brightness to 100%.
5.2.1.1.2 Input 640x480 / 60Hz, 5-block (5-MOSAIC) pattern (input level 100IRE 0.7Vp-p),
then press “White balance”.
SRBG/9300K / 6500K / 5400K / 5000K, R G B Gain preset as below:
sRGB 9300K 6500K 5400K 5000K
Analog DVI Analog DVI Analog DVI Analog DVI Analog DVI
R Gain 255 255 255 255 255 255 255 255 255 255
G Gain 255 255 255 255 255 255 255 255 255 255
B Gain 255 255 255 255 255 255 255 255 255 255
5.2.1.2 9300K alignment:
5.2.1.2.1 Input 1920x1200 / 60Hz & full white pattern at 100IRE.
5.2.1.2.2 Adjust R, G, and B Gain to meet following chromaticity spec:
9300K → x = 0.283 ± 0.005, y = 0.298 ± 0.005, Y > 150cd/m
2
(Both analog & DVI).
5.2.1.3 6500K alignment:
5.2.1.3.1 Input 1920x1200 / 60Hz & full white pattern at 100IRE.
5.2.1.3.2 Adjust R, G and B Gain to meet following chromaticity spec:
6500°K → x = 0.313 ±0.005, y = 0.329 ± 0.005, Y > 200cd/m
2
(Both analog & DVI).
5.2.1.4 5400K alignment:
5.2.1.4.1 Input 1900x1200 / 60Hz & full white pattern at 100IRE.
5.2.1.4.2 Adjust R, G, and B Gain to meet following chromaticity spec:
5400K → x = 0.335 ± 0.005, y = 0.350 ± 0.005, Y > 180cd/m
2
(Both analog & DVI).
5.2.1.5 5000K alignment:
5.2.1.5.1 Input 1920x1200 / 60Hz & full white pattern at 100IRE.
5.2.1.5.2 Adjust R, G and B Gain to meet following chromaticity spec:
5000°K → x = 0.346 ±0.005, y = 0.359 ± 0.005, Y > 180cd/m
2
(Both analog & DVI).
5.2.1.6 sRGB alignment
5.2.1.6.1 Input 1920x1200 / 60Hz & full white pattern at 100IRE.
5.2.1.6.2 Adjust R, G and B Gain to meet following chromaticity spec:
sRGB → x = 0.313 ±0.005, y = 0.329 ± 0.005, Y > 200cd/m
2
(Both analog & DVI).
5.2.1.7.1 Input 1920x1200 / 60Hz & 64 grays pattern at 100IRE, adjust brightness 100%, and
contrast 70%.
5.2.1.7.2
5.2.1.7.3 Input
1920x1200 / 60Hz & 16 grays pattern at 100IRE, adjust brightness 100%, and
contrast 100%.
5.2.1.7.4 9300K / 6500K / 5400K / 5000K, the 16 grays saturation must be less than 4 bar.
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Do Not Copy VP231wb
5.2.1.7 64 grays & 16 grays pattern check:
9300K / 6500K / 5400K / 5000K, the 64 grays can 2 steps saturation.
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