LG 42PT250B Service Manual page 10

RS-232C COMMAND(Commonly apply)
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RS-232C COMMAND
[CMD ID DATA]
wb 00 00
wb 00 10
wb 00 1f
wb 00 20
wb 00 2f
wb 00 ff
wb 00 00": Start Auto-adjustment of white balance.
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"wb 00 10": Start Gain Adjustment (Inner pattern)
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"jb 00 c0" :
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...
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"wb 00 1f": End of Adjustment
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* If it needs, offset adjustment (wb 00 20-start, wb 00 2f-
end)
"wb 00 ff": End of white balance adjustment (inner
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pattern disappear)
Adjustment Mapping information
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RS-232C COMMAND
[CMD ID DATA]
Cool Mid Warm
R Gain jg Ja jd
G Gain jh Jb je
B Gain ji Jc jf
R Cut
G Cut
B Cut
When Color temperature (White balance) Adjustment
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(Automatically)
- Press "Power only key" of service remocon and
operate automatically adjustment.
- Set BaudRate to 115200.
You must start "wb 00 00" and finish it "wb 00 ff".
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If it needs, then adjustment "Offset".
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Copyright ©2011 LG Electronics Inc. All rights reserved.
Only for training and service purposes
Meaning
White Balance adjustment start.
Start of adjust gain
(Inner white pattern)
End of gain adjust
Start of offset adjust
(Inner white pattern)
End of offset adjust
End of White Balance adjust
(Inner pattern disappeared)
CENTER
MIN (DEFAULT)
Cool Mid Warm
00 184 192 192
00 187 183 159
00 192 161 95
64 64 64
64 64 64
64 64 64
(4) White Balance Adjustment (Manual adjustment)
1) Test Equipment: CA-210
- Using PDP color temperature, Color Analyzer (CA-
210) must use CH 10, which Matrix compensated
(White, Red, Green, Blue compensation) with CS-
2100. See the Coordination bellowed one.
2) Manual adjustment sequence is like bellowed one.
- Turn to "Ez-Adjust" mode with press ADJ button of
service remocon.
- Select "10.Test Pattern" with CH+/- button and press
enter. Then set will go on Heat-run mode. Over 30
minutes set let on Heat-run mode.
- Let CA-210 to zero calibration and must has gap more
10cm from center of PDP module when adjustment.
- Press "ADJ" button of service remocon and select
"7.White-Balance" in "Ez-Adjust" then press "
of navigation key. (When press "
go to full white mode)
- Adjust at three mode (Cool, Medium, Warm)
- If "cool" mode
Let B-Gain to 192 and R, G, B-Cut to 64 and then
control R, G gain adjustment High Light adjustment.
- If "Medium" and "Warm" mode Let R-Gain to 192 and
R, G, B-Cut to 64 and then control G, B gain
adjustment High Light adjustment.
- All of the three mode
Let R-Gain to 192 and R, G, B-Cut to 64 and then
control G, B gain adjustment High Light adjustment.
- With volume button (+/-) you can adjust.
- After all adjustment finished, with Enter (_ key) turn to
Ez-Adjust mode. Then with ADJ button, exit from
adjustment mode
MAX
* Attachment: White Balance adjustment coordination and color
temperature.
192
Using CS-1000 Equipment.
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192
- COOL : T=11000K, _uv=0.000, x=0.276 y=0.283
- MEDIUM : T=9300K, _uv=0.000, x=0.285 y=0.293
192
- WARM : T=6500K, _uv=0.000, x=0.313 y=0.329
127
127
Using CA-210 Equipment. (10 CH)
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- Contras value : 216 Gray
127
Color
temperature Equipment
COOL
MEDIUM
WARM
- Brighness spec.
Item Min
White 49
average
brightness
Brightness -20
uniformity
- 10 -
Test Color Coordination
x
CA-210 0.276 0.002
CA-210 0.285 0.002
CA-210 0.313 0.002
Typ Max Unit
60 - cd/m - 100%Window White
Pattern
- 100IRE(255Gray)
- Picture: Vivid(Medium )
+20 % - 85IRE(216Gray) 100%
Window White Pattern
- Picture: Vivid(Medium)
G " button
G " button then set will
y
0.283 0.002
0.293 0.002
0.329 0.002
Remark
LGE Internal Use Only