6-3
L4102EA
3. Flicker Adjustment
Adjustment Point:
R977 (LCD Main CBA)
1. Enter the Service mode.
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 R977 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.
4. White Balance Adjustment
Purpose:
To mix red, green and blue beams correctly
for pure white.
Symptom of Misadjustment:
White becomes bluish
or reddish.
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/AV2(CVBS)]
Enter the Service mode. Press “VOL
p
” button on
the remote control unit and select “C/D/S-1” mode.
[AV1(RGB)]
Enter the Service mode. Press “VOL
p
” button on
the remote control unit and select “C/D/S-2” mode.
5.
[RF/AV2(CVBS)]
When “x” value and “y” value are not within
specification, adjust “DB (C/D/S-1)” or “DR (C/D/S-
1)”. Refer to “1. Initial Setting.”
Note:
“DB(C/D/S1)” or “DR(C/D/S1)” must be
adjusted within ±10.
[AV1(RGB)]
When “x” value and “y” value are not within
specification, adjust “C-DB(C/D/S-2)” or “C-DR(C/
D/S-2)”. Refer to “1. Initial Setting.”
Note:
“C-DB(C/D/S-2)” or “C-DR(C/D/S-2)” must
be adjusted within ±10.
6. Turn the power off and on again. (Main power
button on the TV unit.)
R977
LCD Main CBA
FLASH
(Go and Off)
Test Point Adj. Point
Mode
Input
Screen
VOL.
p
buttons
[RF/AV2(CVBS)]
C/D/S-1
[AV1(RGB)]
C/D/S-2
White Purity
(APL 80%)
M. EQ.
Spec.
Pattern Generator,
Color analyzer
x: 260 to 320,
y: 270 to 330
Figure
Color Analyzer
It carries out in a darkroom.
L = 50 cm
Perpendicularity
INPUT: WHITE 80%
