LG 42LE7300, Service Manual

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- 10 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
4. Manual Adjustment
4.1. ADC(GP2) Adjustment
4.1.1. Overview
ADC adjustment is needed to find the optimum black level and
gain in Analog-to-Digital device and to compensate RGB
deviation.
4.1.2. Equipment & Condition
(1) Adjust Remocon
(2) 801GF(802B, 802F, 802R) or MSPG925FA Pattern
Generator
- Resolution :
480i, 720*480 (MSPG-925FA -> Model: 209, Pattern: 65)
- 480i
1080p, 1920*1080 (MSPG-925FA -> Model: 225, Pattern:
65) - 1080p
- Pattern : Horizontal 100% Color Bar Pattern
- Pattern level: 0.7 ± 0.1 Vp-p
- Image
(3) Must use standard cable
4.1.3. Adjust method
(1) ADC 480i, 1080p Comp1
1) Check connected condition of Comp1 cable to the equipment
2) Give a 480i, 1080p Mode, Horizontal 100% Color Bar
Pattern to Comp1.
(MSPG-925FA -> Model: 209, Pattern: 65) - 480i
(MSPG-925FA -> Model: 225, Pattern: 65) - 1080p
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 1080p 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).
(2) ADC 1920*1080 RGB
1) Check connected condition of Component & RGB cable
to the equipment
2) Give a 1920*1080 Mode, 100 % Horizontal Color Bar
Pattern to RGB port.
(MSPG-925 Series -> model:126 , 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 1080p 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).
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) EDID DATA
A HDMI
A
RGB
A Reference
- HDMI1 ~ HDMI4 / RGB
- In the data of EDID, bellows may be different by S/W or
Input mode.
D-sub to D-sub DVI-D to HDMI or HDMI to HDMI
For HDMI EDID For Analog EDID
0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0A 0x0B 0x0C 0x0D 0x0E 0x0F
0x00 00 FF FF FF FF FF FF 00 1E 6D
ⓐ ⓑ
0x01
ⓒ
01 03 80 10 09 78 0A EE 91 A3 54 4C 99 26
0x02 0F 50 54 A1 08 00 71 4F 81 80 01 01 01 01 01 01
0x03 01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C
0x04 45 00 A0 5A 00 00 00 1E 01 1D 00 72 51 D0 1E 20
0x05 6E 28 55 00 A0 5A 00 00 00 1E 00 00 00 FD 00 3A
0x06 3E 1E 53 10 00 0A 20 20 20 20 20 20
ⓓ
0x07
ⓓ
01
ⓔ
0x00 02 03 26 F1 4E 10 1F 84 13 05 14 03 02 12 20 21
0x01 22 15 01 26 15 07 50 09 57 07 67
ⓕ
0x02
ⓕ
E3 05 03 01 01 1D 80 18 71 1C 16 20 58 2C
0x03 25 00 A0 5A 00 00 00 9E 01 1D 00 80 51 D0 0C 20
0x04 40 80 35 00 A0 5A 00 00 00 1E 02 3A 80 18 71 38
0x05 2D 40 58 2C 45 00 A0 5A 00 00 00 1E 66 21 50 B0
0x06 51 00 1B 30 40 70 36 00 A0 5A 00 00 00 1E 00 00
0x07 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01
ⓔ
0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0A 0x0B 0x0C 0x0D 0x0E 0x0F
0x00 00 FF FF FF FF FF FF 00 1E 6D
ⓐ ⓑ
0x01
ⓒ
01 03 68 10 09 78 0A EE 91 A3 54 4C 99 26
0x02 0F 50 54 A1 08 00 81 80 61 40 45 40 31 40 01 01
0x03 01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C
0x04 45 00 A0 5A 00 00 00 1E 01 1D 00 72 51 D0 1E 20
0x05 6E 28 55 00 A0 5A 00 00 00 1E 00 00 00 FD 00 3A
0x06 3E 1E 53 10 00 0A 20 20 20 20 20 20
ⓓ
0x07
ⓓ
00
ⓔ