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TCL Multimedia Technology Holding CRT BU R&D Center
3.4 White Balance Adjustment
1. Input a black and white pattern to RF input.
2. Enter P-Mode, press key "3" to select white balance adjustment menu.
3. Use the color analyzer to measure the black side of the screen. Adjust the value of
"RC","GC" and "BC" to set the reading of the color analyzer to x=274, y=280. (11500 K).
4. Then measure the white side of the screen. Adjust the value of "RD", "GD" and "BD" to
set the reading of the color analyzer to x=274, y=280. (11500 K).
5. Repeat step 3&4 until you can get the correct reading for both black and white sides.
Note:
A. The "SubBRI" and "SubCON" items are used to assistant the white balance adjustment.
It is the same function as the user OSD menu "Brightness" and "Contrast" items. You can
adjust these items to get the expect intensity when adjusting the white balance.
B. T
he "BLOR-Y", "BLOG-Y" and "BLOB-Y" items are used for the
black level offset setup. When the TV white balance adjustment is done,
connect
a black and white pattern to YUV input terminal. Use the color analyzer to
measure the black side of the screen. Adjust the value of
"BLOB-Y" to set the reading of the color analyzer to x=274, y=280.
Table 3.4.1: The White Balance adjustment OSD menu
OSD menu
Default Value
RC
32
GC
32
BC
32
RD
37
GD
32
BD
37
BLOC
PWL
BriVSD
32
SubBRI
32
SubCON
32
BLOR-Y
64
BLOG-Y
62
BLOB-Y
64
BRTC
31
Chassis Name
Issued on
Updated on
Description
R cut-off setting(BLOR)
G cut-off setting(BLOG)
B cut-off setting(BLOB)
R drive setting(WPR)
G drive setting(WPG)
B drive setting(WPB)
8
Black level offset course(BLOC)
8
Peak White Limiting
Brightness of horizontal line when
adjust G2
YUV white balance black level
Sub-Brightness
NX56-AP&NX56B-AP
2008-01-18
2009-04-24
t
he "BLOR-Y", "BLOG-Y" and
Brightness
Contrast
offset.
Serial No.
Page
Version
YUV white balance
Remark
Adjust to right value
Adjust to right value
Adjust to right value
Adjust to right value
Adjust to right value
Adjust to right value
Adjust to right value accord
with the tube.
Recommended value= "8"
Adjust to right value accord
with the tube.
Recommended value= "8"
Don't adjust, use default
value "32" for producing
Same as user "Brightness"
and "Contrast" adjust
Adjust to right value accord
with the difference tube and
lot
See section 3.5 for detailed
Page 9 of 17
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