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DELL E173FP Service Manual
35
9. White-Balance, Luminance adjustment
Approximately 2 Hours should be allowed for warm up before proceeding white balance
adjustment.
Before started adjust white balance, please setting the Chroma-7120 MEM. Channel 1 to
6500
0
K colors, MEM. Channel 3 to 9300
0
K colors, MEM. Channel 1 to 5700
0
K (our 9300
parameter is x = 296 ±10, y = 311 ±10, Y = 180 ±10 cd/m
2
, 6500 parameter is x = 313 ±10, y =
329 ±10, Y = 180 ±10 cd/m
2
,and 5700 parameter is x = 328 ±10, y = 344 ±10, Y = 180 ±10
cd/m
2
)
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
Press MENU and AUTO-ADJUST button during press Power button will activate the factory mode,
Gain adjustment:
Move cursor to “-Factory Setting-” and press MENU key to enter this sub-menu;
Move cursor to “ Factory” and press MENU key;
Move cursor to “ Auto Level” and press MENU key to adjust Gain and Offset automatically;
a. Adjust sRGB (6500
0
K) color-temperature
1 Switch the chroma-7120 to RGB-mode (with press “MODE” button)
2 Switch the MEM.channel to Channel 01 (with up or down arrow on chroma 7120)
3 The LCD-indicator on chroma 7120 will show x = 313 ±10, y = 329 ±10, Y = 180 ±10 cd/m
2
4 In sRGB sub-menu, adjust C to 192, adjust L to 230 ;
5 Adjust the RED on OSD window until chroma 7120 indicator reached the value R=100
6 Adjust the GREEN on OSD, until chroma 7120 indicator reached G=100
7 Adjust the BLUE on OSD, until chroma 7120 indicator reached B=100
8 repeat above procedure ( item 5,6,7) until chroma 7120 RGB value meet the tolerance
=100±2
b. Adjust Color1 (9300
0
K) color-temperature
9 Switch the chroma-7120 to RGB-mode (with press “MODE” button)
10 Switch the MEM.channel to Channel 03 ( with up or down arrow on chroma 7120 )
11 The LCD-indicator on chroma 7120 will show x = 296 ±10, y = 311 ±10, Y = 180 ±10 cd/m
2
12 In Color1 sub-menu, adjust C to 192, adjust L to 230 ;
13 Adjust the RED on OSD window until chroma 7120 indicator reached the value R=100
14 Adjust the GREEN on OSD, until chroma 7120 indicator reached G=100
15 Adjust the BLUE on OSD, until chroma 7120 indicator reached B=100
16 repeat above procedure ( item 5,6,7) until chroma 7120 RGB value meet the
tolerance =100±2