5-4
PL12.0_B (A2776UH)_EA
The White Balance Adjustment should be
performed when replacing the LCD Panel
or Digital Main CBA.
2. White Balance Adjustment
Purpose:
To mix red and blue beams correctly for
pure white.
Symptom of Misadjustment:
White becomes bluish
or reddish.
1. Operate the unit for more than 60 minutes.
2. Enter the service mode.
3. Press [VOLUME DOWN] button three times on the
remote control unit to select “Drive setting” mode.
“Drive” appears in the screen.
4. Set the color analyzer at the CHROMA mode and
zero point calibration. Bring the optical receptor
pointing at the center of the LCD-Panel.
Note:
The optical receptor must be set
perpendicularly to the LCD Panel surface.
5. Press [3] button to select the “HDB” for High Drive
Blue adjustment. (“HDB” appears in the screen.)
6. Press [MENU] button. The internal Raster signal
appears in the screen. (“Internal (Single)” appears
in the upper right of the screen as shown below.)
7. Press [CHANNEL UP/DOWN] buttons to adjust
the color temperature becomes 12000°K
(x= 0.272 / y= 0.278 ± 0.002).
8. Press [1] button to select the “HDR” for High Drive
Red adjustment (“HDR” appears in the screen.)
and press [CHANNEL UP/DOWN] buttons to
adjust the color temperature.
9. If necessary, adjust the “HDB” or “HDR” again.
10. Press [9] button to select the “LDB” for Low Drive
Blue adjustment (“LDB” appears in the screen.)
and press [CHANNEL UP/DOWN] buttons to
adjust the color temperature.
11. Press [7] button to select the “LDR” for Low Drive
Red adjustment (“LDR” appears in the screen.) and
press [CHANNEL UP/DOWN] buttons to adjust the
color temperature.
12. If necessary, adjust the “LDB” or “LDR” again.
13. Press [CH RETURN] or [PREV CH] to shift to the
initial screen in the service mode.
If [White Balance] message with a green color is
displayed on the upper right of the screen, this
adjustment completes.
If [White Balance] message with a red color is
displayed, repeat above steps from 5. to 12. Then
check the initial screen in the service mode again.
If [White Balance] message with a red color is
displayed, replace the LCD Panel or Digital Main
CBA.
14. To cancel or to exit from the White Balance
Adjustment, press [CH RETURN] or [PREV CH]
button.
ITEM
SPECIFICATION
Color temperature
x= 0.272 ± 0.002
y= 0.278 ± 0.002
Input Signal
Internal pattern
(30/50/80% raster)
Measurement point
Screen center
M. EQ.
CA-310 (KONICA MINOLTA
Luminance meter) or
measuring instrument as
good as CA-310.
Aging time
60min.
(Retail MODE/100IRE Raster
HDMI 1080i@60)
MODE setting of TV
Shipment setting/
Retail MODE
Ambient
temperature
25°C ± 5°C
Color Analyzer
Perpendicularity
To avoid interference from ambient
light, this adjustment should be
performed in a dark room.
Internal (Single)
HDB 0
Internal (Single)
LDB 0
