12.2. White balance adjustment
Instrument Name
Remarks
1.
Remote control
2.
LCD WB meter (Minolta CA-110 equivalent)
3.
Communication jig
4.
Computer for external control
Measurement distance is 21cm
Procedure
Remarks
1.
Enter the White Balance adjustment mode in Check mode, It checked 300cd/m2 or more that measure
luminance when white.
(Display menu: vivid-basic, LCD-AI: off, backlight: +30)
(If it is 300cd/m2 or less, measures again when cold on after 30 minutes.)
2.
It decide “basic color-1” and “basic color-2” when peak adjustment that to measure luminance and the
degree coordinates of color when white.
3.
The degree of color is set to a target two other than “basic color-1” (locked 0xff) of R-GAIN, G-GAIN and
B-GAIN, when displayed white. If can not set to the degree of target color, The degree of color is set to a
target two other than “basic color-2” (locked 0xff) of two item.
color temp. - cool
target color (x0,y0) =(0.271±0.002, 0.275±0.002)
color temp. - normal
target color (x0,y0) =(0.285±0.002, 0.293±0.002)
color temp. - warml
target color (x0,y0) =(0.314±0.002, 0.324±0.002)
basic-color1/2
RED
GREEN
BLUE
Adjust x-axis
B-GAIN
R-GAIN
R-GAIN
Adjust x-axis
B-GAIN
R-GAIN
R-GAIN
* Point of the degree coordinates of color becomes large when R-GAIN and G-GAIN are enlarged. Point
of the degree coordinates of color becomes small when B-GAIN is enlarged.
* Case of adjust by remote controller, It chooses from the items of R-GAIN,G-GAIN and B-GAIN by [3]
and [4] key on remote controller.
And value is changed by volume [+] and [-] key.
It will be easy to converge if
is adjusted preferentially
4.
Next, The degree of color is set to a target two other than “basic color : G-CENT” (locked 0x80) of R-
CENT and CENT when displayed gray.
basic-color
GREEN
The method of adjustment
Adjust x-axis
R-CENT
When it is enlarged that point of the degree
coordinates of color becomes large.
Adjust y-axis
B-CENT
When it is enlarged that point of the degree
coordinates of color becomes small.
*Case of adjust by remote controller, It chooses from the items of R-CENT, and B-CENT by [3] and [4]
key on remote controller.
And value is changed by volume [+] and [-] key.
5.
If It converges on the degree of target color, the data is written to EEPROM.
*Case of adjust by remote controller, Long aggressiveness [8] key on remote controller in the state of R-
CENT,G-CENT and B-CENT
6.
Check to the degree coordinates of color when white and gray are in
x=0.271±0.003
y=0.275±0.003 (when color temp is cool)
x=0.285±0.010
y=0.293±0.010 (when color temp is normal)
x=0.314±0.015
y=0.324±0.015 (when color temp is warm)
Time to aging is a thing for 20
minutes or more.
The panel is left for three hours
or more in 20-25 °C.
All processes from assembly to
completion
are
done
in
a
surrounding environment from
the room temperature 20 °C to
25 °C.
Change to the color temp. by
remote controller or PC. and
Adjustment forthree color.
24
TC-26LX70L / TC-32LX70L
Summary of Contents for TC26LX70L - 26" LCD TV
Page 8: ...5 Chassis Board Layout 8 TC 26LX70L TC 32LX70L ...
Page 16: ...8 Location of Lead Wiring 8 1 Wire dressing 32 inch 16 TC 26LX70L TC 32LX70L ...
Page 17: ...8 2 Wire dressing 26 inch 17 TC 26LX70L TC 32LX70L ...
Page 18: ...9 EMI Processing 9 1 EMI 32 inch 18 TC 26LX70L TC 32LX70L ...
Page 19: ...9 2 EMI 26 inch 19 TC 26LX70L TC 32LX70L ...
Page 33: ...15 Schematic and Block Diagram 15 1 Schematic Diagram Notes TC 26LX70L TC 32LX70L 33 ...
Page 45: ...16 Exploded View and Replacement Parts List 16 1 Exploded View 45 TC 26LX70L TC 32LX70L ...
Page 46: ...16 2 Replacement Parts List Notes 46 TC 26LX70L TC 32LX70L ...
