LG 42PW340 Service Manual page 10

(3) White Balance Adjustment
- If you can't adjust with inner pattern, then you can adjust
it using HDMI pattern. You can select option at "Ez-Adjust
Menu – 7. White Balance" there items "NONE, INNER,
HDMI". It is normally setting at inner basically. If you can't
adjust using inner pattern you can select HDMI item, and
you can adjust.
- In manual Adjust case, if you press ADJ button of service
remocon, and enter "Ez-Adjust Menu – 7. White Balance",
then automatically inner pattern operates. (In case of
"Inner" originally "Test-Pattern. On" will be selected in The
"Test-Pattern. On/Off".
Connect all cables and equipments like Pic.5)
O
Set Baud Rate of RS-232C to 115200. It may set
O
115200 orignally.
Connect RS-232C cable to set
O
Connect HDMI cable to set
O
RS-232C COMMAND(Commonly apply)
V
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.
O
"wb 00 10": Start Gain Adjustment (Inner pattern)
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"jb 00 c0" :
O
...
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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
O
pattern disappear)
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)
Adjustment Mapping information
V
RS-232C COMMAND
[CMD ID DATA]
Cool Mid
R Gain jg Ja
G Gain jh Jb
B Gain ji Jc
R Cut
G Cut
B Cut
When Color temperature (White balance) Adjustment
O
(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".
O
If it needs, then adjustment "Offset".
O
(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
- 10 -
CENTER
MIN (DEFAULT)
Warm Cool Mid
jd 00 184 192
je 00 187 183
jf 00 192 161
64 64
64 64
64 64
G " button then set will
LGE Internal Use Only
MAX
Warm
192 192
159 192
95 192
64 127
64 127
64 127
G
" button