White Balance Adjustment - LG 37LV470S Service Manual

RGB
A
0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0A 0x0B 0x0C 0x0D 0x0E 0x0F
0x00 00 FF FF FF FF FF
0x01 01 03 68 10
0x02 0F 50 54 A1 08 00
0x03 90 40 A9 C0 B3 00
0x04 45 00 A0 5A 00 00
0x05 40 70 36 00 A0 5A
0x06 3E 1E 53 10 00 0A
0x07
Reference
A
- HDMI1 ~ HDMI3 / RGB
- In the data of EDID, bellows may be different by S/W or
Input mode.
Product ID
Model Name HEX
ALL 0001
0001
Serial No. : Controlled on product line
Month, Year: Controlled on production line:
ex) Monthly : '01' -> '01'
Year : '2010' -> '14'
Model Name(Hex):
MODEL
all 00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20
Checksum: Changeable by total EDID data.
INPUT 1
HDMI1 7F
HDMI2 7F
HDMI3 7F
RGB X
Vendor Specific(HDMI)
INPUT
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

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 %
Copyright © 2011 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
FF 00 1E 6D
09 78 0A EE 91 A3 54
71 4F 01 01 01 01 01
02 3A 80 18 71 38 2D
00 1E 66 21 50 B0 51
00 00 00 1E 00 00 00
20 20 20 20 20 20
EDID Table DDC Function
0100 Analog
0100
MODEL NAME(HEX)
2 3
D9 X
C9 X
B9 X
X 98
MODEL NAME(HEX)
4.2.2 Equipment
1) Color Analyzer: CA-210 (LED Module : CH 14)
2) Adj. Computer(During auto adj., RS-232C protocol is
needed)
4C 99 26
3) Adjustment remote control
01 95 00
4) Video Signal Generator MSPG-925F 720p/204-Gray
40 58 2C
(Model:217, Pattern:49)
00 1B 30
-> Only when internal pattern is not available
FD 00 3A
01 3 Color Analyzer Matrix should be calibrated using CS-1000.
A
4.2.3. Equipment connection MAP
Digital
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]
RS-232C Command used during auto-adj.
A
RS-232C COMMAND
[CMD ID
wb 00
wb 00
wb 00
wb 00
wb 00
wb 00
Ex) wb 00 00 -> Begin white balance auto-adj.
*(wb 00 20(Start), wb 00 2f(completed)) -> Off-set adj.
- 10 -
Probe
RS -232C
Signal Source
* If TV internal pattern is used, not needed
LEN CMD
DATA]
00 Begin White Balance adj.
10 Gain adj.(internal white pattern)
1f Gain adj. completed
20 Offset adj.(internal white pattern)
2f Offset adj. completed
ff End White Balance adj.(Internal pattern disappears)
wb 00 10 -> Gain adj.
ja 00 ff -> Adj. data
jb 00 c0
...
...
wb 00 1f -> Gain adj. completed
wb 00 ff -> End white balance auto-adj.
Co lo r Analyzer
RS -232C
Co m p ut er
RS -232C
Pat t ern Generat o r
CS
VAL
Explanation
LGE Internal Use Only