42
’’ LCD TV AOC L42W761
35
7. White Balance, Luminance Adjustment
Approximately 30 minutes should be allowed for warm up before proceeding white balance adjustment.
Please select channel 03 to adjust the white balance.
Color Temp.
Cold
Normal
Warm
PC MODE
x
289
299
313
y
304
315
329
Y
450
450
450
AV MODE
x
289
299
313
y
304
315
329
Y
450
450
450
HDMI
x
289
299
313
y
304
315
329
Y
450
450
450
COMPONENT
(
1080i/720p
480i/480p
)
x
289
299
313
y
304
315
329
Y
450
450
450
Note: The tolerance of the color coordinates should be less than ± 20.
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
Note: Step of AV, HDMI, COMPONENT1080i,720p 480i,480p mode adjustment is the same as PC mode
PC mode:
Ⅰ
. In the TV mode adjust volume to zero and press number key 9
8
7
6. 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 chroma 7120 measurement reach the lowest value.
Ⅲ
. Gain adjustment:
A. Adjust Cold color-temperature:
1. Set the Contrast of OSD function to 80 and Adjust Brightness to chroma-7120 Y>450 cd/m
2
± 30 cd/m
2
2. Switch the chroma-7120 to RGB-
mode (with press “MODE” button)
3. Switch the MEM. channel to Channel 03 (with up or down arrow on chroma-7120)
4. The LCD-indicator on chroma-7120 will show x =289, y =304, Y>450 cd/m
2
± 30 cd/m
2
5. Adjust the 4 item: RG, until chroma 7120 indicator reached the value R=100
6. Adjust the 5 item: GG, until chroma-7120 indicator reached the value G=100
7. Adjust the 6 item: BG, until chroma-7120 indicator reached the value B=100
8. Repeat above procedure until chroma-7120 RGB value meet the tolerance =100±2
9. Switch the chroma-
7120 to x, y, Y mode with press “MODE” button to check the color temp is in SPEC. or not.
10. Enter the 8 item to select another color temperature to adjust.
Summary of Contents for L42W761
Page 15: ...42 LCD TV AOC L42W761 15 2 4 Front Panel Control Knobs ...
Page 20: ...42 LCD TV AOC L42W761 20 5 Remove the screws and pull out the connecters to remove the board ...
Page 22: ...42 LCD TV AOC L42W761 22 7 Remove the screws to remove the left and right metallic bracket ...
Page 28: ...42 LCD TV AOC L42W761 28 6 PCB Layout 6 1 Main Board ...
Page 29: ...42 LCD TV AOC L42W761 29 ...
Page 30: ...42 LCD TV AOC L42W761 30 6 2 Power Board ...
Page 31: ...42 LCD TV AOC L42W761 31 ...
Page 32: ...42 LCD TV AOC L42W761 32 ...
Page 33: ...42 LCD TV AOC L42W761 33 6 3 IR Board ...
Page 34: ...42 LCD TV AOC L42W761 34 6 4 Side Board 6 5 Key Board ...
Page 37: ...42 LCD TV AOC L42W761 37 8 Block Diagram ...
Page 38: ...42 LCD TV AOC L42W761 38 9 Schematic Diagram 9 1 Main Board ...
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Page 55: ...42 LCD TV AOC L42W761 55 9 3 IR Board ...
Page 56: ...42 LCD TV AOC L42W761 56 9 4 Key Board ...
Page 57: ...42 LCD TV AOC L42W761 57 9 5 Side Board ...
Page 58: ...42 LCD TV AOC L42W761 58 9 6 Audio Board ...