Adjustment Color Temperature(White Balance); White Balance Adjustment; Connection Diagram (Auto Adjustment); Rs-232C Command (Commonly Apply) - LG 42PN4500-SA Service Manual

- Adjustment Color Temperature(White balance)

■ Using Instruments
● Color Analyzer: CA-210 (CH 10)
- Using LCD 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.
● Auto-adjustment Equipment (It needs when Auto-adjust-
ment – It is availed communicate with RS-232C : Baud
rate: 115200)
● Video Signal Generator MSPG-925F 720p, 216Gray
(Model: 217, Pattern 78)

■ Connection Diagram (Auto Adjustment)

● Using Inner Pattern
● Using HDMI input
< connection Diagram for Adjustment White balance >

■ 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)
● Set Baud Rate of RS-232C to 115200. It may set 115200
orignally.
● Connect RS-232C cable to set
● Connect HDMI cable to set
Copyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes

■ RS-232C Command (Commonly apply)

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.
● "wb 00 10": Start Gain Adjustment (Inner pattern)
● "jb 00 c0" :
● ...
● "wb 00 1f": End of Adjustment
* If it needs, offset adjustment (wb 00 20-start, wb 00 2f-
end)
● "wb 00 ff": End of white balance adjustment (inner pattern
disappear)
■ Adjustment Mapping information
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
- 8 -
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)
M CENTER
I (DEFAULT)
N
Warm Cool Mid Warm
jd 00 184 192
je 00 187 183
jf 00 192 161
64 64
64 64
64 64
LGE Internal Use Only
M
A
X
192 192
159 192
95 192
64 127
64 127
64 127