FUNAI F20LCTE, Service Manual

Page: 18 / 57

5-3 L0305EA
4. Flicker Adjustment
Adjustment Point: VR201 (LCD Main CBA Unit)
Note: Use service remote control unit
1. Enter the Service mode. (See page 5-1)
2. Press “2” button on the remote control unit.
The following screen appears.
3. If Flicker Adjustment is not fit, the screen become the
following.
4. Adjust VR201 so that flash stops.
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.
5-1. 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.
VR201
LCD Main CBA Unit
FLASH
(Go and Off)
Test Point Adj. Point Mode Input
Screen
CH
o
/
p
buttons
VIDEO1
VIDEO2
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