White-Balance, Luminance Adjustment - AOC L37W781B Service Manual

37'' 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:
Ⅰ. In the TV mode adjust volume to zero and press number key 100  9  9 9. It will achieve the
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  R, G, B Bias adjust.
4-6 items is RG, GG, BG  R, G, B Gain adjust.
7 item needn't adjust
8 items is color temperature select: Cool, Normal, and Warm.
Ⅱ. 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.
Ⅲ. Gain adjustment:
A. Adjust Cool 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 = 0.280
6. Adjust the 6 item: RG, until Ca210 indicator reached the value x = 0.269
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 = 0.290
6. Adjust the 6 item: RG, until Ca210 indicator reached the value x = 0.280
7. Repeat above procedure until Ca210 xy value meet the tolerance =±0.020
Cool
x 269
y 280
Y 350
x 269
y 280
Y 400
x 269
y 280
Y 400
x 269
y 280
Y 400
37
AOC L37W781B
Normal Warm
280 293
290 309
350 350
280 293
390 309
400 400
280 293
390 309
400 400
280 293
390 309
400 400