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The following adjustment normally are not
attempted in the field. Only when replacing the
LCD Panel then adjust as a preparation.
4. White Balance Adjustment
Purpose: To mix red, green and blue beams correctly
for pure white.
Symptom of Misadjustment: White becomes bluish
or reddish.
Test Point
Adj. Point
CH o / p
Screen
buttons
M. EQ.
Pattern Generator,
Color analyzer
Figure
It carries out in a darkroom.
Perpendicularity
L = 50 cm
INPUT: WHITE 80%
Note: Use service remote control unit
1. Operate the unit for more than 20 minutes.
2. Input the White Purity (APL 80%).
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 perpendicu-
larly to the LCD Panel surface.
4. Enter the Service mode. Press "VOL p" button on the
service remote control unit and select "C/D" mode.
5-1. When "x" value and "y" value are not within specifica-
tion, adjust "DB(C/D1)" or "DR(C/D1)". Refer to "1.
Initial Setting."
Note: "DB(C/D1)" or "DR(C/D1)" must be adjusted
within ±10.
5-2. When "x" value and "y" value are not within specifica-
tion, adjust "DB(C/D2)" or "DR(C/D2)". Refer to "1.
Initial Setting."
Note: "DB(C/D2)" or "DR(C/D2)" must be adjusted
within ±10.
Mode
Input
White
VIDEO1
Purity
VIDEO2
(APL 80%)
Spec.
x (0.256 to 0.316),
y (0.264 to 0.324)
Color Analyzer
Fig. 2
5-3
L0201EA
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