42PB4D-AA (CHASSIS:PB73B) - LG TV Service Manual (repair manual). Page 9

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7. Adjustment of White Balance
7-1. 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)
7-2Measuring device connection diagram
(for automatic adjustment)
7-3 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
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. 6> Connection diagram for internal pattern
<Fig. 7> 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
End Gain adjustment
End Offset adjustment
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
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