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The following adjustment normally are not
attempted in the field. Only when replacing the
LCD Panel then adjust as a preparation.
3. White Balance Adjustment 1
Purpose: To mix red, green and blue beams correctly
for pure white.
Symptom of Misadjustment: White becomes bluish
or reddish.
Test Point Adj. Point
[VIDEO1]
VOL. p
Screen
[VIDEO2]
buttons
M. EQ.
Pattern Generator,
Color analyzer
Figure
It carries out in a darkroom.
Perpendicularity
L = 3 cm
INPUT: WHITE 80%
Note: Use the 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
perpendicularly to the LCD Panel surface.
4. [VIDEO1]
Enter the Service mode. Press "VOL p" button on
the remote control unit and select "C/D1-" mode.
[VIDEO2]
Enter the Service mode. Press "VOL p" button on
the remote control unit and select "C/D2-" mode.
Mode
Input
C/D1
White Purity
(APL 80%)
C/D2
Spec.
x: 0.271 to 0.281,
y: 0.277 to 0.287
Color Analyzer
5. [VIDEO1]
Press "6" button to select "DB(C/D1)" for Blue
adjustment. Press "4" button to select "DR(C/D1)"
for Red adjustment. When "x" value and "y" value
are not within specification, 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 ±0.005.
[VIDEO2]
Press "6" button to select "DB(C/D2)" for Blue
adjustment. Press "4" button to select "DR(C/D2)"
for Red adjustment.When "x" value and "y" value
are not within specification, 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 ±0.005.
6. Turn the power off and on again. (Main power
button on the TV unit.)
4. White Balance Adjustment 2
Purpose: To mix red, green and blue beams correctly
for pure white.
Symptom of Misadjustment: White becomes bluish
or reddish.
Test Point Adj. Point
VOL. p
Screen
buttons
M. EQ.
Pattern Generator,
Color analyzer
L = 3 cm
INPUT: WHITE 20%
Note: Use the remote control unit.
1. Operate the unit for more than 20 minutes.
2. Input the White Purity (APL 20%).
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.
6-3
Mode
Input
[VIDEO1]
C/D1
White Purity
[VIDEO2]
(APL 20%)
C/D2
Spec.
x: 0.271 to 0.281,
y: 0.277 to 0.287
Figure
It carries out in a darkroom.
Perpendicularity
Color Analyzer
L2650EA
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