LG 22LQ630H, Service Manual, Page: 7 / 39

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Only for training and service purposes
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