42PG6HD-UA (CHASSIS:PU83A) - LG TV Service Manual (repair manual). Page 8

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6. Adjustment of White Balance
6-1. Required Test Equipment
(1) Color Analyzer : CA-210 (CH 10), CA-100(CH-10), CA-
100+(CH-10)
=> To adjust color temperature of Plasma, CS-1000 is the
Color Analyzer and should be set to use CH 10 in which
white, red, green, and blue color are corrected. Conduct
the adjustment according to the coordinates for White
Balance adjustment in the table below.
(2) Computer for adjusting (necessary for the automatic
adjustment, possible to communicate with the RS-232C,
Baud Rate : 115200)
(3) Video Signal Generator MSPG-925F 720p, 216Gray
(Model :217, Pattern 78)
[
Requirements for Automatic Adjustment
(1) The illuminance of surroundings
10 lux or less; preventing light in surroundings as much as
possible
(2) The location of the Probe
1) For PDP: place the color analyzer (CA-100, CA-100+)
close to the surface of a module and start the
adjustment.
2) For LCD: place the color analyzer (CA-210) close to the
surface of a module within 10 cm and keep the probe of
the color analyzer at 80° to 100° angle from the surface
of a module.
6-2.  Connection Diagram of Equipment 
for Measuring 
(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 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 PU83A chassis
from the adjuster.
[RS-232C command used for the automatic adjustment]
Ô
Wb 00 00-----white balance Automatic Adjustment Start 
Ô
Ô
Ja 00 ff------Adjustment Data
Ô
Jb 00 c0
Ô
...
Ô
Wb 00 1f-----Gain Adjustment End
Ô
*(wb 00 20(Start), wb 00 2f(End))----- When adjust Off-set
Ô
Wb 00 ff------White Balance Automatic Adjustment End   
(Disappear Inside pattern)
[Adjustment Map]
(internal pattern)
Connection Diagram for HDMI Input
wb
wb
wb
wb
wb
wb
00
00
00
00
00
00
00
10
1f
20
2f
ff
White Balance Adjustment Start
Gain Adjustment End
Offset Adjustment End
White Balance Adjustment End
RS-232C COMMAND
[CMD     ID     DATA]
Meaning
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
184
187
192
64
64
64
Cool
192
183
161
64
64
64
Mid
192
159
95
64
64
64
Warm
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