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LGE Internal Use Only
Copyright©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
6. Adjustment of White Balance
6-1. Required Equipment
1) Color Analyzer : CA-100(CH 10)
2) When adjusting the PLASMA color temperature, the No.
10 channel with the matrix compensated (White, Red,
Green and Blue compensated) should be used for the
CS-1000 as Color analyzer (CA-100), which should be
adjusted based on the white balance adjustment
coordinate as described below.
2) Automatic adjuster (necessary for the automatic
adjustment, possible to communicate via the RS-232C)
3) Video Signal Generator MSPG-925F 720p,
216Gray(Model : 217, Pattern : 78)
6-2Measuring device connection diagram
(for automatic adjustment)
6-3 White Balance adjustment method
Basically it uses the internal pattern but when internal pattern
is not possible, you can select HDMI input for adjustment.
Through the option at the most bottom part of the Ez Adjust
Menu 7.White Balance menu, you can select NONE, INNER
and HDMI, and the default is set to INNER. When the
adjustment cannot be done with the internal pattern, you can
select HDMI input for adjustment.
For manual adjustment, press the ADJ KEY of the adjustment
R/C to enter Ez Adjust 7.White-Balance, and the pattern is
automatically displayed. (When you set the Option to INNER,
the default is always set to INNER)
1) Connect the set according to the internal pattern or HDMI
input in accordance with 7-3 measuring device connection
diagram.
2) Set the Baud Rate of RS-232C to 115200. It is set to
115200 as default.
3) Connect the RS-232C Cable to the set.
4) Connect the HDMI Cable to the set. (Limited to the set with
HDMI option)
5) Select and adjust the model applicable to PB75A chassis
from the adjuster.
Caution) For automatic adjustment, RS-232C Command and
Chassis are commonly applied
- Wb 00 00 Start automatic adjustment of white balance
- Wb 00 10 Start gain adjustment (Internal pattern)
- Ja 00 ff Adjustment data
- Jb 00 c0
- …
- Wb 00 1f End gain adjustment
* Adjust offset as necessary (wb 00 20(Start), wb 00 2f(End))
- Wb 00 ff End automatic adjustment of white balance
(Internal pattern disappears)
Caution) Adjustment map
* White Balance adjustment (For automatic adjustment)
- Execute Power Only Key of the adjustment R/C to execute
automatic adjustment. Set the Baud Rate to 115200.
- Always start adjustment with “wb 00 00” and end
adjustment with “wb 00 ff”
- Adjust the offset if necessary.
Color Analyer
RS-232C
Full White Pattern
(Inner pattern)
<Fig. 5> Connection diagram for internal pattern
<Fig. 6> Connection diagram for HDMI input
216Gray White Pattern
(HDMI Pattern)
Color Analyer
MSPG-925FS
MSPG-925FS
Video Signal Generator
ideo Signal Generator
Model : 217
Model : 217
Pattern : 78
Pattern : 78
RS-232C
RS-232C
Baud Rate : 1
Baud Rate : 115200
15200
Remark
RS-232C Command
[CMD ID DATA]
wb
wb
wb
wb
wb
wb
00
00
00
00
00
00
00
10
1f
20
2f
ff
Start white balance adjustment
Start Gain adjustment(Internal white pattern)
End Gain adjustment
Start Offset adjustment (Internal white pattern)
End Offset adjustment
End white Balance adjustment (Internal pattern disappear)
R Gain
G Gain
B Gain
R Cut
G Cut
B Cut
jg
jh
ji
Cool
ja
jb
jc
Mid
RS-232C COMMAND
[CMD ID DATA]
CENTER
(DEFAULT)
jd
je
jf
00
00
00
192
192
192
127
127
127
Warm
Min
Max
192
192
192
64
64
64
Cool
192
192
192
64
64
64
Mid
192
192
192
64
64
64
Warm
