White Balance, Luminance Adjustment - Dell 1907FPc Service Manual

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10. White balance, Luminance adjustment

Approximately 30 minutes should be allowed for warm up before proceeding White-Balance
adjustment.
Before started adjust white balance, please setting the Chroma-7120 MEM. Channel 3 to 6500
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Channel 4 to 9300 K colors, MEM. Channel 9 to 5700
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±20 cd/m , 6500 parameter is x =313±28, y=329±28, Y = 230 ±20 cd/m
344 ±28, Y = 230 ±20 cd/m
How to setting MEM.channel you can reference to chroma 7120 user guide or simple use " SC" key and " NEXT"
key to modify x, y, Y value and use "ID" key to modify the TEXT description Following is the procedure to do
white-balance adjust.
Enter into factory mode:
Press MENU and up button
then press MENU again, main MENU will be in the middle of the screen.
Gain adjustment:
Move to "Factory Reset" and press MENU key to enter this sub-menu.
Move to " Factory" and press MENU key.
Move to " Auto Color" and press MENU key to adjust Gain and Offset automatically;
a. Adjust sRGB (6500
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±28, y=329±28, Y = 230 ±20 cd/m
4. Adjust the RED on OSD window until chroma 7120 indicator reached the value R=100
5. Adjust the GREEN on OSD, until chroma 7120 indicator reached G=100
6. Adjust the BLUE on OSD, until chroma 7120 indicator reached B=100
7. Repeat above procedure (item 5,6,7) until chroma 7120 RGB value meet the tolerance =100±2
b. Adjust Color1 (9300
8. Switch the chroma-7120 to RGB-mode (with press "MODE" button)
9. Switch the MEM.channel to Channel 4 (with up or down arrow on chroma 7120)
10. The LCD-indicator on chroma 7120 will show x=283±28, y=297±28, Y = 200 ±20 cd/m
11. Adjust the RED on OSD window until chroma 7120 indicator reached the value R=100
12. Adjust the GREEN on OSD, until chroma 7120 indicator reached G=100
13. Adjust the BLUE on OSD, until chroma 7120 indicator reached B=100
14. Repeat above procedure (item 5,6,7) until chroma 7120 RGB value meet the tolerance =100±2
c. Adjust Color2 (5700
15. Switch the chroma-7120 to RGB-mode (with press "MODE" button)
16. Switch the MEM.channel to Channel 9 (with up or down arrow on chroma 7120)
17. The LCD-indicator on chroma 7120 will show x = 328 ±28, y = 344 ±28, Y = 230 ±20 cd/m
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)
at the same time, during press power button on will activate the factory mode,
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K) color-temperature
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K) color-temperature
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K) color-temperature
u5[Pb€ g /• D e™ • Q
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K (our 9300 parameter is x=283±28, y=297±28, Y = 200
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, and 5700 parameter is x = 328 ±28, y =
60
Dell 1907FPc
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K colors, MEM.
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