Acer AT2002, Руководство по обслуживанию

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4
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 12000 color,
MEM. channel 2 to 10000 color, MEM. channel 3 to 8000 color, MEM.
( our 12000 parameter is x = 272 ± 15, y = 278 ± 15, Y = 350 ± 7 cd/m2 ;
10000 parameter is x = 279 ± 15, y = 290 ± 15, Y = 350± 7 cd/m
2
;
8000 parameter is x = 295 ± 15, y = 305 ± 15, Y = 350± 7 cd/m
2
Color Temp. 12000 10000 8000
X 272 279 295
Y 278 290 305
Y 350 350 350
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
I.Press Number key Power key + manual will into the factory mode, and press Menu key the
OSD will show menu and a word “F” at LEFT top of Menu.
1. In the factory mode select “COLOR TEMP” may be select the difference color temp.
2. Select SCALER Adjustment:
RG, GG, BG
Æ
R, G, B Gain adjust.
RB, GB, BB
Æ
R, G, B Bias adjust.
<Notes: the R, G, B gain use 9 bits, and R, G, B bias use 10 bits to save the value in EEPROM,
so if the R, G, B gain and bias is 255 to 256, the “P0 256”will change to “P10”>
Notes: adjust AV mode the same as PC mode, except the luminance (Pc mode is 350cd/m2,
Av is 350cd/m2).
II. Bias (Low luminance) adjustment:
1. Set the raster pattern (Black pattern with 800
× ６００
) Input.
2. Set the contrast on OSD window to the value=80, Brightness set to “80”
3. Adjust the brightness on OSD until chroma 7120 measurement reach the lowest value.
Chapter 6