37LV370S-ZB, 37LV375G-ZC, 37LV375S-ZC, 37LV375W-ZC (CHASSIS:LD12B) - LG TV Service Manual (repair manual). Page 10

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- 10 -
A
RGB
A
Reference
- HDMI1 ~ HDMI3 / RGB 
- In the data of EDID, bellows may be different by S/W or
Input mode. 
ⓐ Product ID
ⓑ Serial No. : Controlled on product line
ⓒ Month, Year: Controlled on production line:
ex) Monthly : ‘01’ -> ‘01’
Year : ‘2010’ -> ‘14’
ⓓ Model Name(Hex):
ⓔ Checksum: Changeable by total EDID data.
ⓕ Vendor Specific(HDMI)
4.2. White Balance Adjustment
4.2.1. Overview
(1) W/B adj. Objective & How-it-works
(2) Objective: To reduce each Panel’s W/B deviation
(3) How-it-works : When R/G/B gain in the OSD is at 192, it
means the panel is at its Full Dynamic Range. In order to
prevent saturation of Full Dynamic range and data, one of
R/G/B is fixed at 192, and the other two is lowered to find
the desired value. 
(4) Adj. condition : normal temperature
1) Surrounding Temperature : 25 ºC ± 5 ºC
2) Warm-up time: About 5 Min
3) Surrounding Humidity : 20 % ~ 80 %
4.2.2 Equipment
1) Color Analyzer: CA-210 (LED Module : CH 14)
2) Adj. Computer(During auto adj., RS-232C protocol is
needed)
3) Adjust Remote control
4) Video Signal Generator MSPG-925F 720p/204-Gray
(Model:217, Pattern:49)
-> Only when internal pattern is not available
A
Color Analyzer Matrix should be calibrated using CS-1000
4.2.3. Equipment connection MAP
4.2.4. Adj. Command (Protocol)
<Command Format>
- LEN: Number of Data Byte to be sent
- CMD: Command
- VAL: FOS Data value
- CS: Checksum of sent data
- A: Acknowledge
Ex) [Send: JA_00_DD] / [Ack: A_00_okDDX]
A
RS-232C Command used during auto-adj.
Ex) wb 00 00   ->  Begin white balance auto-adj.
wb 00 10   ->  Gain adj.
ja 00 ff   ->  Adj. data
jb 00 c0
...
...
wb 00 1f   -> Gain adj. completed
*(wb 00 20(Start), wb 00 2f(completed)) -> Off-set adj.
wb 00 ff   -> End white balance auto-adj.
0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0A 0x0B 0x0C 0x0D 0x0E 0x0F
0x00
00
FF
FF
FF
FF
FF
FF
00
1E
6D
0x01
01
03
68
10
09
78
0A
EE
91
A3
54
4C
99
26
0x02
0F
50
54
A1
08
00
71
4F
01
01
01
01
01
01
95
00
0x03
90
40
A9
C0
B3
00
02
3A
80
18
71
38
2D
40
58
2C
0x04
45
00
A0
5A
00
00
00
1E
66
21
50
B0
51
00
1B
30
0x05
40
70
36
00
A0
5A
00
00
00
1E
00
00
00
FD
00
3A
0x06 3E
1E
53
10
00
0A
20
20
20
20
20
20
0x07
01
ⓔ3
Model Name
HEX
EDID Table
DDC Function
ALL
0001
0100
Analog
0001
0100
Digital
MODEL
MODEL NAME(HEX)
all
00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20
INPUT
MODEL NAME(HEX)
HDMI1
67 03 0C 00 10 00 B8 2D
HDMI2
67 03 0C 00 20 00 B8 2D
HDMI3
67 03 0C 00 30 00 B8 2D
RGB
67 03 0C 00 40 00 B8 2D
INPUT
1
2
3
HDMI1
7F
D9
X
HDMI2
7F
C9
X
HDMI3
7F
B9
X
RGB
X
X
46
Co lo r An alyzer
 
Co m p ut er
 
Pat t ern  Gen erat o r
 
RS -232C 
RS -232C 
RS -232C 
Probe
Signal Source
* If TV internal pattern is used, not needed
LEN
CMD
VAL
CS
RS-232C COMMAND
Explanation
[CMD
ID
DATA]
wb
00
00
Begin White Balance adj.
wb
00
10
Gain adj.(internal white pattern)
wb
00
1f
Gain adj. completed
wb
00
20
Offset adj.(internal white pattern)
wb
00
2f
Offset adj. completed
wb
00
ff
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