5-3
L0111EA
The following adjustment normally are not
attempted in the field. Only when replacing the
LCD Panel then adjust as a preparation.
5. White Balance Adjustment
Purpose:
To mix red, green and blue beams correctly
for pure white.
Symptom of Misadjustment:
White becomes bluish
or reddish.
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. When "x" value and "y" value are not within specifica-
tion, adjust "DB" or "DR". Refer to "1. Initial Setting."
Note:
"DB" or "DR" must be adjusted within ±10.
Test Point
Adj. Point
Mode
Input
Screen
CH
o
/
p
buttons
VIDEO1
White
Purity
(APL 80%)
M. EQ.
Spec.
Pattern Generator,
Color analyzer
x (0.256 to 0.316),
y (0.264 to 0.324)
Figure
Color Analyzer
It carries out in a darkroom.
L = 50 cm
Perpendicularity
INPUT: WHITE 80%
Fig. 2
