White-Balance, Luminance Adjustment - AOC N17XA22-2 Service Manual

7. 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 1 to PC 7800K colors,
MEM. Channel 2 to PC 6500K color, and MEM. Channel 3 to AV 7800 colors, (PC 7800 parameter is
x = 296 ± 15, y = 311 ± 15, Y = 250 ± 7 cd/m2; PC 6500K parameter is x = 313 ± 15, y = 329 ± 15,
2
Y = 250± 7 cd/m ; AV 7800K parameter is x = 296 ± 15, y = 311 ± 15,Y = 250± 7 cd/m
Color Temp.
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
˙Press Number key 100  9  9  9 will into the factory mode, and press Menu key the OSD will show menu
and a word F at Right top of Menu.
˙In the factory mode select MORE function will into Bias and Gain adjustment.
1. ADC Adjustment:
AL  Auto level adjust.
RG, GG, BG  R, G, B Gain adjusts.
RB, GB, BB  R, G, B Bias adjusts.
2. SCALER Adjustment:
CO, BR  Contrast and Brightness adjust.
RG, GG, BG  R, G, B Gain adjusts.
RB, GB, BB  R, G, B Bias adjusts.
S9, S6, ST, SH  Save 9300, 6500, 9300 color temperature.
R9, R6, RT, RH Recall 9300, 6500, 9300-color temperature.
BI  Setup Burn-in mode ON / OFF.
ISP Set ISP ON/OFF.
PP  Set PIP ON/OFF.
WH  Set Wireless Headphone ON/OFF.
SR  Set SRS ON/OFF.
CC  Set Close Caption ON/OFF.
VC  Set V Chip ON/OFF.
EX  Exit MORE function to factory mode menu.
II. Bias (Low luminance) adjustment:
1. Press " AUTO" button,
2. Set the contrast on OSD window to the value=51, color (user) R, G, B set to "50"
3. Adjust the brightness on OSD until chroma 7120 measurement reach the value Y>350 cd/m
III. Gain adjustment:
A. Adjust PC 7800K color-temperature:
1. Set the Contrast of OSD function to 45 and Adjust Brightness to chroma-7120 Y>390 cd/m
2. Switch the chroma-7120 to RGB-mode (with press "MODE" button)
3. Switch the MEM. channel to Channel 01 (with up or down arrow on chroma-7120)
4. The LCD-indicator on chroma-7120 will show x = 296 ± 15, y = 311 ± 15, Y = 250 ± 7 cd/m
5. Adjust the Color(user)Mode: RED on OSD window, until chroma 7120 indicator reached the value R=100
6. Adjust the Color (user) Mode: GREEN on OSD window, until chroma-7120 indicator reached the value
G=100
7. Adjust the Color (user) Mode: BLUE on OSD window, until chroma-7120 indicator reached the value
B=100
8. Repeat above procedure (Item 5,6,7) until chroma-7120 RGB value meet the tolerance =100±2
9. switch the chroma-7120 to xyY mode With press "MODE" button
10. Press Color (9300) on OSD window to save the adjustment result
PC 7800K
X 0.296
Y 0.311
Y 250±7
PC 6500K
0.313
0.329
250±7
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N17XA22-2
2
)
AV 7800K
0.296
0.311
250±7
2
2
2