TCL Multimedia Technology Holding CRT BU R&D Center
Chassis Name
NX56-AP&NX56B-AP
Serial No.
Issued on
2008-01-18
Page
Page 9 of 17
Updated on
2009-04-24
Version
4.0
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
YUV white balance
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
t
he “BLOR-Y”, “BLOG-Y” and
“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
Description
Remark
RC
32
R cut-off setting(BLOR)
Adjust to right value
GC
32
G cut-off setting(BLOG)
Adjust to right value
BC
32
B cut-off setting(BLOB)
Adjust to right value
RD
37
R drive setting(WPR)
Adjust to right value
GD
32
G drive setting(WPG)
Adjust to right value
BD
37
B drive setting(WPB)
Adjust to right value
BLOC
8
Black level offset course(BLOC)
Adjust to right value accord
with the tube.
Recommended value= “8”
PWL 8
Peak
White
Limiting
Adjust to right value accord
with the tube.
Recommended value= “8”
BriVSD 32
Brightness of horizontal line when
adjust G2
Don’t adjust, use default
value “32” for producing
SubBRI 32
Brightness
SubCON 32
Contrast
Same as user “Brightness”
and “Contrast” adjust
BLOR-Y 64
BLOG-Y 62
BLOB-Y 64
YUV white balance black level
offset.
Adjust to right value accord
with the difference tube and
lot
BRTC
31
Sub-Brightness
See section 3.5 for detailed
