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White-Balance, Luminance Adjustment - Asus MW221 Service Manual

22" lcd color monitor
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22" LCD Color Monitor
9. White- Balance, Luminance Adjustment
Approximately 30 minutes should be allowed for warm up before proceeding white balance adjustment.
Before started adjust white balance , please set the Chroma-7120 MEM Channel 3 to Warm (6500K)
color, MEM Channel 4 to Normal (7500K) color, MEM Channel 5 to Cool (9300K) color , and MEM
Channel 6 to sRGB color ( our Warm color parameter is x = 313 ±20, y = 329 ±20, Y>160cd/m
Normal color parameter is x = 299 ±20, y = 315 ±20, Y>160cd/m
y = 297 ±20, Y>160cd/m
How to setting MEM channel you can reference to chroma 7120 user guide or simple use " SC" key and
" NEXT" Key to modify xyY value and use "ID" key to modify the TEXT description Following is the procedure
to do white-balance adjust .
2. Setting the color temp. you want
A. MEM.CHANNEL 3 (Warm color):
Warm color temp. parameter is x = 313 ±20, y = 329 ±20, Y>160cd/ m
B. MEM.CHANNEL 4 (Normal color):
Normal color temp. parameter is x = 299 ±20, y = 315 ±20, Y>160cd/ m
C. MEM.CHANNEL 5 (Cool color):
Cool color temp. parameter is x = 283 ±20, y = 297 ±20, Y>160cd/m
D. MEM.CHANNEL 6 (sRGB color):
sRGB color temp. parameter is x = 313 ±20, y = 329 ±20, Y= 150 ±20cd/m
3. Into Factory mode of ASUS MW221:
Press the MENU button, pull out the power cord, and then plug the power cord. Then the factory OSD will be at the
left top of the panel.
4. Bias adjustment:
Set the Contrast
5. Gain adjustment:
Move cursor to "-F-" and press MENU key
A. Adjust Warm (6500K) color-temperature
1. Switch the chroma-7120 to RGB-Mode (with press "MODE" button)
2. Switch the MEM.channel to Channel 3 (with up or down arrow on chroma 7120)
3. The LCD-indicator on chroma 7120 will show x = 313 ±20, y = 329 ±20, Y>160cd/m
4. Adjust the RED of color3 on factory window until chroma 7120 indicator reached the value R=100
5. Adjust the GREEN of color3 on factory window until chroma 7120 indicator reachedthe value G=100
6. Adjust the BLUE of color3 on factory window until chroma 7120 indicator reached the value B=100
7. Repeat above procedure (item 4,5,6) until chroma 7120 RGB value meet the tolerance =100±2
B. Adjust Normal (7500K) color-temperature
1. Switch the chroma-7120 to RGB-Mode (with press "MODE" button)
2. Switch the MEM.channel to Channel 4(with up or down arrow on chroma 7120)
3. The LCD-indicator on chroma 7120 will show x = 299 ±20, y = 315 ±20, Y>160cd/m
4. Adjust the RED of color3 on factory window until chroma 7120 indicator reached the value R=100
2
; sRGB color parameter is x = 313 ±20, y = 329 ±20, Y= 150 ±20cd/m
to 50; Adjust the Brightness
2
; Cool color parameter is x = 283 ±20,
2
2
2
2
to 80.
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ASUS MW221
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