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1. Purity Check Mode
This mode cycles through full-screen displays of red,
green, blue, and white to check for non-active pixels.
1. Enter the Service mode.
2. Each time pressing [7] button on the service
remote control unit, the display changes as
follows.
Purity Check Mode
Red mode
Green mode
Blue mode
White mode
Note:
When entering this mode, the default setting is White mode.
[7] button
[7] button
[7] button
[7] button
The following adjustment normally are not attempted in
the field. Only when replacing the LCD Panel then adjust
as a preparation.
2. 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
L = 3 cm
INPUT: WHITE 70%, 32%
1. Operate the unit for more than 20 minutes.
2. Input the White Purity.
INPUT SIGNAL
32%=32IRE 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 remote control unit and select "C/D" mode.
5-2
Mode
Input
White Purity
[RF/VIDEO1, 2]
(APL 70%)
C/D
or
(APL 32%)
Spec.
x= 0.272 ± 0.005
y= 0.278 ± 0.005
Figure
It carries out in a darkroom.
Perpendicularity
Color Analyzer
A71A0EA
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