42CQ610H (CHASSIS:LA1EZ) - LG TV Service Manual (repair manual). Page 7

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4.1.3.2. Adj. protocol
Ref.) ADC Adj. RS232C Protocol_Ver1.0
4.1.3.3. Adj. order
▪ aa 00 00  [Enter ADC adj. mode]
▪ xb 00 60  [Change input source to RGB(1024*768)]
▪ ad 00 10  [Adjust 1024*768 RGB]
▪ ad 00 90  End adj.
Ref) ADC adj. RS232C Protocol_Ver1.0
5. Manual Adjustment
5.1 ADC Adjustment
5.1.1 Overview
▪  ADC  adjustment  is  needed  to  find  the  optimum  black  level 
and gain in Analog-to-Digital device and to compensate RGB 
deviation.
5.1.2. Equipment & Condition
(1) Adjust Remocon
(2)  801GF(802B,  802F,  802R)  or  MSPG925FA  Pattern 
Generator
   - Resolution:  480i  Comp1  (MSPG-925FA:  model-209, 
pattern-65)
   - Resolution : 1024*768 RGB (Inner Pattern)
   - Pattern : Horizontal 100% Color Bar Pattern
   - Pattern level: 0.7±0.1 Vp-p
   - Image
(3)  Must use standard cable
5.1.3 Adjust method
5.1.3.1. ADC RGB
(1)  Press the In-start Key on the ADJ remote after at least 1 
min  of  signal  reception. Then,  select  4.ADC  Calibration. 
And Press OK Button on the menu “Start”. The adjustment 
will start automatically.
(2)  If  ADC  RGB  is  successful,  “ADC  RGB  Success”  is 
displayed and  ADC RGB is completed. If ADC calibration 
is failure, “ADC RGB Fail” is displayed.
(3)  If ADC calibration is failure, after rechecking ADC pattern 
or condition, retry calibration
5.2. EDID/DDC Download(EDID PCM)
5.2.1. 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”.
5.2.2. Equipment
(1)  Adjust remocon.
(2)  Since embedded EDID data is used, EDID download JIG, 
HDMI cable and D-sub cable are not need
5.2.3. Download method
(1) Press Adj. key on the Adj. R/C.
(2) Select EDID D/L menu.
(3) By pressing Enter key, EDID download will begin
(4)  If Download is successful, OK is display, but If Download is 
failure, NG is displayed.
(5) If Download is failure, Re-try downloads.
[Caution] :  When  EDID  Download,  must  remove  RGB/HDMI 
Cable.
Protocol
Command
Set ACK
Enter adj. mode
aa 00 00
a 00 OK00x
Source change
xb 00 40
xb 00 40
b 00 OK40x (Adjust 1080i Comp1 )
b 00 OK60x (Adjust 1024*768 RGB)
Begin adj.
ad 00 10
Return adj. result
OKx (Case of Success)
NGx (Case of Fail)
Read adj. data
(main)
ad 00 20 
(sub )
ad 00 21
(main)
000000000000000000000000007c007b006dx
(Sub)
000000070000000000000000007c00830077x
Confirm adj.
ad 00 99
NG 03 00x (Fail)
NG 03 01x (Fail)
NG 03 02x (Fail)
OK 03 03x (Success)
End adj.
aa 00 90
a 00 OK90x
 
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