Read LG 42PN4500-SA (CHASSIS:PB31A) Service Manual online
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- 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
■ 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
■ RS-232C Command (Commonly apply)
● “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
< connection Diagram for Adjustment White balance >
RS-232C COMMAND
[CMD ID DATA]
Meaning
wb
00
00
White Balance adjustment start.
wb
00
10
Start of adjust gain
(Inner white pattern)
(Inner white pattern)
wb
00
1f
End of gain adjust
wb
00
20
Start of offset adjust
(Inner white pattern)
(Inner white pattern)
wb
00
2f
End of offset adjust
wb
00
ff
End of White Balance adjust
(Inner pattern disappeared)
(Inner pattern disappeared)
RS-232C
COMMAND
[CMD ID DATA]
M
I
N
CENTER
(DEFAULT)
M
A
X
Cool Mid Warm
Cool Mid Warm
R Gain
jg
Ja
jd
00
184 192
192
192
G Gain
jh
Jb
je
00
187 183
159
192
B Gain
ji
Jc
jf
00
192 161
95
192
R Cut
64
64
64
127
G Cut
64
64
64
127
B Cut
64
64
64
127
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