LG 32LB9D - Measuring Device Connection Diagram; White Balance Adjustment Method; Required Equipment; Adjustment of White Balance

LGE Internal Use OnlyCopyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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5. Adjustment of White Balance
5-1. Required Equipment
(1) Color analyzer : CA-210(CH 9)
- When you adjust LCD color temperature, on color
analyzer (CA-210), you should use Channel 9 which is
Matrix compensated (White, Red, Green, Blue revised)
by CS-1000 and adjust in accordance with White balance
adjustment coordinate which is specified on the next.
(2) Automatic adjustor (with automatic adjustment hour
necessity and the RS-232C communication being possible.
Baud Rate = 115200)
(3) Video Signal Generator MSPG-925F 720p, 216 Gray
(Model : 217, Pattern : 78)
5-2. Measuring device connection diagram
(Automatic Adjustment)
5-3. 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 5.White Balance menu, you can select NONE, INNER,
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 6.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 5.2 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 LB73B chassis
from the adjuster.
Caution) When you adjust automatically, RS-232C Command
is used.
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.
R Gain
G Gain
B Gain
R Cut
G Cut
B Cut
CENTER
(DEFAULT)(Hex)
00
00
00
192
192
192
127
127
127
Min
Max
192
192
192
64
64
64
Cool
192
192
192
64
64
64
Mid
192
192
192
64
64
64
Warm
RS-232C COMMAND
[CMD ID DATA]
jg
jh
ji
Cool
ja
jb
jc
Mid
jd
je
jf
Warm
Color Analyzer
Full W hite Patter n
RS-232C
(Inner Pattern)
<Fig. 3> Connection diagram for internal pattern
<Fig. 4> Connection diagram for HDMI input
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)