Changhong Electric PT4216, Руководство по обслуживанию, Страница: 43 / 62

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HD signal source one suit
②Debug（ adjust in TV、YPbPr and PC condition respectively）
Set the channel in C-3 under TV mode, then do AutoColor.
Input full color stripe signal in YPBPR and do AutoColor.
Input window signal in PC, the window is white, surround is black signal.
The result will appear on screen after AutoColor adjustment, make the
adjustment results of Rgain、Ggain and Bgain close to 0×80 in TV condition,
if the difference is too great, adjust the value of HWUC_CON
(subsaturation),and adjust the AutoColor again.
(2)White balance, color temperature adjustment
①Required instrument
CHROMA 7120 color analyze instrument（or same function instrument, contain color
coordinate – chroma conversion card） one suit
White balance adjusting implement （ request the video output range 0-1V is adjustable,750hm
load ） one suit
②Prepare
A. connect all equipment, switch the condition of PDP TV to AV.
B. Set the picture quality of PDP TV in standard condition
C. Set the distance between light receiver of white balance to center place
of PDP display screen is 15cm±3cm .
D. Make sure that the environmental brightness is below 2cd/m
2
③White balance, color temperature adjustment
Before adjusting it, put the first PDP TV in AV condition, and the image in
standard condition, make white balance adjust implement output the white signal
to AV terminal, adjust output level of balance adjust implement, make the
brightness of the PDP TV is
200 ±20 cd/ m
2
(use CHROMA 7120 color analyze instrument
to obtain the brightness value),then fix the video output level of white balance
adjust implement(until all the PDP TV are adjusted).
Enter white balance adjusting item of factory mode, change R,G,B value(try best to adjust
this 3 value biggest) .
Make color temperature coordinate value like the value of above table(tolerance
±4% ) ：
Z X Y
K12000 0.270 0.277
Attention： After the color temperature and color coordinate are satisfied with above request, you
should judge if exist phenomenon of partial color, namely if the value of Δuv is 0 or not.
Partial color phenomenon occur if Δuv is not 0 , adjust R,G,B value to 0 again, and make it
satisfy color coordinate request.