47LX9550-CA (CHASSIS:LC03M) - LG TV Service Manual (repair manual). Page 10

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4.2. 
EDID(The Extended Display Identification
Data)/DDC(Display Data Channel) download
(1) Overview
It  is  a  VESA  regulation.  A  PC  or  a  MNT  will  display  an
optimal resolution through information sharing without any
necessity of user input. It is a realization of “Plug and Play”.
(2) Equipment
- Adjust remote control
- Since embedded EDID data is used, EDID download JIG,
HDMI cable and D-sub cable are not need.
(3) Download method
1) Press  Adj.  key  on  the  Adj.  R/C,  then  select  “10.EDID
D/L”, By pressing Enter key, enter EDID D/L menu.
2) Select  [Start]  button  by  pressing  Enter  key,  HDMI1  /
HDMI2 / HDMI3 / HDMI4 / RGB are Writing and display
OK or NG.
4.3. White Balance Adjustment
4.3.1 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 %
4.3.2 Equipment
1) Color Analyzer: CA-210 (LED Module : CH 14)
2) Adj.  Computer(During  auto  adj.,  RS-232C  protocol  is
needed)
3) Adjust Remocon
4) Video  Signal  Generator  MSPG-925F  720p/216-Gray
(Model:217, Pattern:78)
-> Only when internal pattern is not available
A
Color Analyzer Matrix should be calibrated using CS-1000
4.3.3. Equipment connection MAP
D-sub to D-sub
DVI-D to HDMI or HDMI to HDMI
For HDMI EDID
For Analog EDID
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
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