Adjustment Instruction - LG 22MT45A Service Manual

1. Application Range
This spec. sheet applies to LW45A Chassis applied TV all
models manufactured in TV factory
2. Specification
1) Because this is not a hot chassis, it is not necessary to
use an isolation transformer. However, the use of isolation
transformer will help protect test instrument.
2) Adjustment must be done in the correct order.
3) The adjustment must be performed in the circumstance of
25 °C ± 5 °C of temperature and 65 % ± 10 % of relative
humidity if there is no specific designation.
4) The input voltage of the receiver must keep AC 100-240
V~, 50/60 Hz.
5) The receiver must be operated for about 5 minutes prior to
the adjustment when module is in the circumstance of over
15. In case of keeping module is in the circumstance of 0
°C, it should be placed in the circumstance of above 15
°C for 2 hours. In case of keeping module is in the circum-
stance of below -20 °C, it should be placed in the circum-
stance of above 15 °C for 3 hours.
[Caution]
When still image is displayed for a period of 20 minutes or
longer (Especially where W/B scale is strong. Digital pattern
13ch and/or Cross hatch pattern 09ch), there can some after-
image in the black level area.
3. Main PCBA Adjustments
3.1. ADC Calibration
- An ADC calibration is automatically adjusted from DFT-Jig
- If it needs to adjust manually, refer to appendix.
NO Item CMD
1
Enter Adjust A
Adjust MODE 'Mode In'
ADC ADC A
adjust adjust
* ADC Calibration Protocol (RS-232)
Adjust Sequence
▪aa 00 00 [Enter Adjust Mode]
▪xb 00 60 [RGB Input (1024*768)]
▪ad 00 10 [Adjust 1024*768 RGB]
▪aa 00 90 End Adjust mode
3.2. EDID Download
3.2.1. 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".
3.2.2. Equipment
- Since EDID data is embedded, EDID download JIG, HDMI
cable and D-sub cable are not need.
Copyright © LG Electronics. Inc. All right reserved.
Only for training and service purposes

ADJUSTMENT INSTRUCTION

CMD Data 0
2
A 0 0 When transfer the
'Mode In',
Carry the command.
D 1 0 Automatically adjustment
3.2.3. Download method
- The EDID data is automatically saved.
3.2.4. EDID DATA
- 22MT44A(RGB-PC)
** RGB-PC : 128Bytes
0 1 2 3 4
0 00 FF FF FF FF
10 01 17 01 03 68
20 10 50 54 A1 08
30 95 00 90 40 81
40 45 00 DC 0C 11
50 45 0F 00 0A 20
60 44 20 46 48 44
70 00 0A 20 20 20
- 22MT44A (HDMI)
** HDMI : 256Bytes
0 1 2 3 4
0 00 FF FF FF FF
10 01 17 01 03 80
20 10 50 54 21 08
30 95 00 90 40 A9
40 45 00 DC 0C 11
50 68 B0 36 00 DC
60 3D 1E 45 0F 00
70 00 32 44 20 46
80 02 03 21 F1 4F
90 1F 07 16 01 26
A0 00 02 3A 80 18
B0 00 00 1A 01 1D
C0 0C 11 00 00 9E
D0 00 DC 0C 11 00
E0 2C 25 80 DC 0C
F0 40 10 2C 45 20
- 24MT44A(RGB-PC)
** RGB-PC : 128Bytes
0 1 2 3 4
0 00 FF FF FF FF
10 01 17 01 03 68
20 0F 47 4A A1 08
30 81 C0 01 01 01
40 33 00 3F 43 21
50 45 09 00 0A 20
60 44 20 48 44 20
70 00 0A 20 20 20
- 8 -
5 6 7 8 9 A B C
FF FF 00 1E 6D C4 59 01
30 1B 78 EA EB F5 A6 56
00 B3 00 81 80 81 C0 71
00 02 3A 80 18 71 38 2D
00 00 1E 00 00 00 FD 00
20 20 20 20 20 00 00 00
20 4C 47 20 54 56 0A 00
20 20 20 20 20 20 20 20
5 6 7 8 9 A B C
FF FF 00 1E 6D C6 59 01
30 1B 78 EA EB F5 A6 56
00 B3 00 81 80 71 40 81
C0 02 3A 80 18 71 38 2D
00 00 1E 21 39 90 30 62
0C 11 00 00 1C 00 00 00
0A 20 20 20 20 20 20 00
48 44 20 4C 47 20 54 56
04 05 03 02 20 22 90 11
11 07 50 09 7F 07 65 03
71 38 2D 40 58 2C 45 00
80 18 71 1C 16 20 58 2C
01 1D 00 72 51 D0 1E 20
00 1E 01 1D 80 D0 72 1C
11 00 00 9E 02 3A 80 D0
DC 0C 11 00 00 1E 00 00
5 6 7 8 9 A B C
FF FF 00 1E 6D C8 59 01
34 1D 78 EA 53 4D A3 56
00 01 40 45 40 61 40 71
01 66 21 56 AA 51 00 1E
00 00 1E 00 00 00 FD 00
20 20 20 20 20 00 00 00
4C 47 20 54 56 0A 20 00
20 20 20 20 20 20 20 20
LGE Internal Use Only
D E F
01 01 01
51 9C 26
40 A9 C0
40 58 2C
38 3D 1E
FC 00 32
00 00 FF
20 00 FC
D E F
01 01 01
51 9C 26
C0 81 00
40 58 2C
1A 27 40
FD 00 38
00 00 FC
0A 01 8A
12 13 14
0C 00 10
DC 0C 11
25 00 DC
6E 28 55
16 20 10
72 38 2D
00 00 1D
D E F
01 01 01
4F 9E 26
40 81 00
30 46 8F
38 3D 1E
FC 00 32
00 00 FF
20 00 67