Emerson LD195EM8 Service Manual page 26

5. [CUTOFF]
Press [1] button to select "COR" for Red Cutoff
adjustment. Press [3] button to select "COB" for
Blue Cutoff adjustment.
[DRIVE]
Press [4] button to select "DR" for Red Drive
adjustment. Press [6] button to select "DB" for Blue
Drive adjustment.
6. In each color mode, press [CH. o / p] buttons to
adjust the values of color.
7. Adjust Cutoff and Drive so that the color
temperature becomes 11000°K (x= 0.279 / y=
0.272 ±0.005).
The following adjustment normally are not attempted in
the field. Only when replacing the LCD Panel then adjust
as a preparation.
7. White Balance Adjustment
[Component / DTV]
Purpose: To mix red, green and blue beams correctly
for pure white.
Symptom of Misadjustment: White becomes bluish
or reddish.
Test Point Adj. Point
[VOL. n] [VIDEO2]
Screen
button
M. EQ.
Pattern Generator,
Color analyzer
Figure
It carries out in a darkroom.
Perpendicularity
L = 3 cm
INPUT: WHITE 70%, 30%
1. Operate the unit for more than 20 minutes.
Mode Input
White Raster
(APL 70%)
C/D2
or
(APL 30%)
Spec.
x= 0.279 ± 0.005
y= 0.272 ± 0.005
Color Analyzer
2. Input the White Raster(70%=70IRE, 30%=30IRE).
INPUT SIGNAL
30%=30IRE 70%=70IRE
3. Set the color analyzer to the CHROMA mode and
bring the optical receptor to the center on the
LCD-Panel surface after zero point calibration as
shown above.
Note: The optical receptor must be set
perpendicularly to the LCD Panel surface.
4. Enter the Service mode. Press [VOL. n] button on
the service remote control unit and select "C/D2"
mode.
5. [CUTOFF]
Press [1] button to select "COR" for Red Cutoff
adjustment. Press [3] button to select "COB" for
Blue Cutoff adjustment.
[DRIVE]
Press [4] button to select "DR" for Red Drive
adjustment. Press [6] button to select "DB" for Blue
Drive adjustment.
6. In each color mode, press [CH. o / p] buttons to
adjust the values of color.
7. Adjust Cutoff and Drive so that the color
temperature becomes 11000°K (x= 0.279 / y=
0.272 ±0.005).
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