White Balance Adjustment - Emerson LC195EM82 Service Manual

2. Auto Calibration [Component]
Purpose: To bring the color adjustment of each
component into standard alignment.
Symptom of Misadjustment: If this adjustment is
incorrect, component signals do not reproduce the
corresponding color.
1. Input 1080i 100% Color Bar signal.
2. Enter the service mode.
3. To enter the Auto Calibration adjustment mode,
press [6] button on service the remote control unit.
4. To start auto adjustment, press [1] button on the
service remote control unit.
- In the auto adjustment mode, "Please wait"
appears on the screen.
- Upon completion, "OK" appears on the screen.
3. Auto Calibration [DTV]
Purpose: To bring the color adjustment of DTV into
standard alignment.
Symptom of Misadjustment: If this adjustment is
incorrect, DTV signals do not reproduce the
corresponding color.
1. Enter the service mode.
2. To enter the Auto Calibration adjustment mode,
press [6] button on the service remote control unit.
3. To start auto adjustment, press [2] button on the
service remote control unit.
- In the auto adjustment mode, "Please wait"
appears on the screen.
- Upon completion, "OK" appears on the screen.
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

[Video]
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
L = 3 cm
INPUT: WHITE 70%, 30%
1. Operate the unit for more than 20 minutes.
2. Input the White Purity.
INPUT SIGNAL
30%=30IRE 70%=70IRE
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. Enter the Service mode. Press [VOL. n] button on
the service remote control unit and select "C/D1"
mode.
5-2
Mode Input
White Purity
[VIDEO] (APL 70%)
C/D1
or
(APL 30%)
Spec.
x= 0.279 ± 0.005
y= 0.272 ± 0.005
Figure
It carries out in a darkroom.
Perpendicularity
Color Analyzer
A81N0EA