6-3
L3150EA
The following adjustment normally are not
attempted in the field. Only when replacing the
LCD Panel then adjust as a preparation.
3. 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 the 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
perpendicularly to the LCD Panel surface.
4.
[RF/VIDEO1]
Enter the Service mode. Press “VOL
p
” button on
the remote control unit and select “C/D1-” mode.
[VIDEO2]
Enter the Service mode. Press “VOL
p
” button on
the remote control unit and select “C/D2-” mode.
5.
[RF/VIDEO1]
When “x” value and “y” value are not within
specification, 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 ±0.01.
[VIDEO2]
When “x” value and “y” value are not within
specification, adjust “DB(C/D2)” or “DR(C/D2)”.
Refer to “1. Initial Setting.”
Note:
“C-DB(C/D2)” or “C-DR(C/D2)” must be
adjusted within ±0.01.
6. Turn the power off and on again. (Main power
button on the TV unit.)
Test Point Adj. Point
Mode
Input
Screen
VOL.
p
buttons
[RF/VIDEO1]
C/D1
[VIDEO2]
C/D2
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 = 3 cm
Perpendicularity
INPUT: WHITE 80%