Read LG 55LS675H (CHASSIS:LA2AG) Service Manual online
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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
- or Inner pattern
(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 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.
5.2.4. EDID DATA
(1) FHD Model
■ HDMI 1 FHD 8BIT (C/S : E9CF)
■ HDMI 2 FHD 8BIT (C/S : E9BF)
■ HDMI 3 FHD 8BIT (C/S : EACF)
■ RGB-FHD 8BIT (C/S : 02)
EDID Block 0, Bytes 0-127 [00H-7FH]
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