19LH20 (CHASSIS:LA92A) - LG TV Service Manual (repair manual). Page 10

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(2) Confirmation
1) We confirm whether “0xBF(480i)/0xC8(1080i)” address
of EEPROM “0xA2” is “0xAA” or not.
2) If “0xBF(480i)/0xC8(1080i)” address of EEPROM “0xA2”
isn’t “0xAA”, we adjust once more.
3) We can confirm the ADC values from “0xB ~0xBE(480i)/
0xC2~(1080i)” addresses in a page “0xA2”.
* Manual ADC Confirmation using Service Remocon. After
enter Service Mode by pushing “INSTART” key.
5. Manual Adjustment
5.1. ADC(Saturn5) Adjustment
(1) Overview
ADC adjustment is needed to find the optimum black level
and gain in Analog-to-Digital device and to compensate
RGB deviation.
(2) Equipment & Condition
1) Adjust Remocon
2) 801GF(802B, 802F, 802R) or MSPG925FA Pattern
Generator
- Resolution: 480i, 1024*768
- Pattern : Horizontal 100% Color Bar Pattern
- Pattern level: 0.7±0.1 Vp-p
- Image
3) Must use standard cable
(3) Adjust method
• ADC 480i Comp1
1) Check connected condition of Comp1 cable to the
equipment
2) Give a 480i Mode, Horizontal 100% Color Bar Pattern
to Comp1.
(MSPG-925FA Ë Model: 209, Pattern: 65)
3) Change input mode as Component1 and picture mode
as “Standard”
4) Press the In-start Key on the ADJ remote after at least
1 min of signal reception. Then, select 7. External ADC
-> 1. COMP 480i on the menu. Press enter key. The
adjustment will start automatically.
5) If ADC calibration is successful, “ADC RGB Success”
is displayed.
If ADC calibration is failure, “ADC RGB Fail” is
displayed.
6) If ADC calibration is failure, after recheck ADC pattern
or condition retry calibration. Error message refer to (v)
• ADC 1024*768 RGB
1) Check connected condition of Component & RGB
cable to the equipment
2) Give a 1024*768 Mode, 100% Horizontal Color Bar
Pattern to RGB port. 
(MSPG-925 Series Ë model:60 , pattern:65 )
3) Change input mode as RGB and picture mode as
“Standard”
4) Press the In-start Key on the ADJ remote after at least
1 min of signal reception. Then, select 7. External ADC
-> 1. COMP 480i on the menu. Press enter key. The
adjustment will start automatically.
5) If ADC calibration is successful, “ADC RGB Success”
is displayed.
If ADC calibration is failure, “ADC RGB Fail” is
displayed.
6) If ADC calibration is failure, after recheck ADC pattern
or condition retry calibration
Error message refer to 5)
5.2. EDID(The Extended Display Identification
Data)/DDC(Display Data Channel) download
Reference : Download is only possible in POWER ONLY
MODE
(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
- Since embedded EDID data is used, EDID download JIG,
HDMI cable and D-sub cable are not need.
- Adjust remocon
(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 download.
Caution) When EDID download, must remove RGB/HDMI cable.
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C
2009
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