White-Balance, Luminance Adjustment - AOC L32W781B Service Manual

32'' LCD TV
7. White Balance, Luminance Adjustment
Approximately 30 minutes should be allowed for warm up before proceeding white balance adjustment.
First adjust PC mode and then adjust AV mode, HDMI mode, component 480i mode, component 480p mode. Before
started adjust white balance, please set the Color Analyzer Ca210 to Channel 03 and set Ca210 to xyLv Mode.
Color Temp.
PC MODE
AV MODE
HDMI
COMPONENT
480i/480p
Note: The tolerance of the color coordinates should be less than ± 20.
Note: Step of AV, HDMI, COMPONENT480i, COMPONENT480p mode adjustment is the same as PC mode,
PC mode:
. In the TV mode adjust volume to zero and press number key 100
factory mode. Select the item of White Balance and press right key to enter it.
In the White Balance you can adjust 8 items.
1-3 items is RO, GO, BO
4-6 items is RG, GG, BG
7 item needn't adjust
8 items is color temperature select: Cool, Normal, and Warm.
. Bias (Low luminance) adjustment:
1. Set the raster pattern (Black pattern with 1024×768) Input.
2. Adjust the brightness on OSD until Ca210 measurement reach the lowest value.
. Gain adjustment:
A. Adjust Cold color-temperature:
1. Adjust Brightness to Ca210 Y>350 cd/m2
2. Switch the Ca210 to xyLv Mode (with press "MODE" button)
3. Switch the MEM. CH. to Channel 03 (with up or down arrow on Ca210)
4. Adjust the 4 item: GG, until Ca210 indicator reached the value Lv>350cd/m2
5. Adjust the 5 item: BG, until Ca210 indicator reached the value y = 0.304
6. Adjust the 6 item: RG, until Ca210 indicator reached the value x = 0.289
7. Repeat above procedure until Ca210 xy value meet the tolerance =±0.020
8. Enter the 8 item to select another color temperature to adjust.
B. Adjust Normal color-temperature:
1. Adjust Brightness to Ca210 Y>180 cd/m2
2. Switch the Ca210 to xyLv Mode (with press "MODE" button)
3. Switch the MEM. CH. to Channel 03 (with up or down arrow on Ca210)
4. Adjust the 4 item: GG, until Ca210 indicator reached the value Lv>350 cd/m2
5. Adjust the 5 item: BG, until Ca210 indicator reached the value y = 0.315
6. Adjust the 6 item: RG, until Ca210 indicator reached the value x = 0.299
7. Repeat above procedure until Ca210 xy value meet the tolerance =±0.020
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Cool
x 289
y 304
Y 350
x 289
y 304
Y 400
x 289
y 304
Y 400
x 289
y 304
Y 400
R, G, B Bias adjust.
R, G, B Gain adjust.
37
AOC L32W781B
Normal Warm
299 308
315 324
350 350
299 308
315 324
400 400
299 308
315 324
400 400
299 308
315 324
400 400
9 9 9. It will achieve the