AOC e2752Vq, Service Manual, Page: 56 / 87

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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 (7300K) color, MEM Channel 9 to Cool (9300K) color , and MEM Channel 10 to sRGB color
( our Warm color parameter is x = 313 ±30, y = 329 ±30; Normal color parameter is x = 302 ±30, y = 318 ±30,;
Cool color parameter is x = 283 ±30, y = 297 ±30; sRGB color parameter is x = 313 ±30, y = 329 ±30)
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 ±30, y = 329 ±30
B. MEM.CHANNEL 4 (Normal color):
Normal color temp. parameter is x = 302 ±30, y = 318 ±30
C. MEM.CHANNEL 9 (Cool color):
Cool color temp. parameter is x = 283 ±30, y = 297 ±30
D. MEM.CHANNEL 10 (sRGB color):
sRGB color temp. parameter is x = 313 ±30, y = 329 ±30
3. Enter into Factory mode:
Press the MENU button, pull out the power cord, and then plug the power cord. You’ll enter into the factory mode.
4. Bias adjustment:
Set the Contrast to 50; Adjust the Brightness to 80.
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 ±30, y = 329 ±30
4. Adjust the RED on factory window until chroma 7120 indicator reached the value R=100
5. Adjust the GREEN on factory window until chroma 7120 indicator reachedthe value G=100
6. Adjust the BLUE 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