Sylvania STRL315 Service Manual page 20

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.
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. 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.
Mode Input
White
VIDEO1 Purity
(APL 80%)
Spec.
x (0.256 to 0.316),
y (0.264 to 0.324)
Color Analyzer
Fig. 2
5-3 L0110EA