Read LG 24LP350H-TA (CHASSIS:LM91M / LM91T) Service Manual online
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ADJUSTMENT INSTRUCTION
1. Application Range
This specification sheet is applied to all of the LED TV with
LM91M/T chassis.
2. Designation
(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 100-220 V,
50/60Hz.
(5) The receiver must be operated for over 5 minutes prior to
the adjustment when module is in the circumstance of
above 15 °C.
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 circumstance of below
-20 °C, it should be placed in the circumstance of above 15
°C for 3 hours.
* Caution
When a still image is displayed for 20 minutes or longer
(especially where W/B scale is strong. Digital pattern 13ch
and/or Cross hatch pattern 09ch), there can some
afterimage in the black level area.
3. ADC calibration
3.1. ADC Calibration
- An ADC calibration is automatically adjusted from DFT-Jig
- If it needs to adjust manually, refer to appendix.
* ADC Calibration Protocol (RS232)
Adjust Sequence
▪ aa 00 00 [Enter Adjust Mode]
▪ xb 00 40 [Component1 Input (480i)]
▪ ad 00 10 [Adjust 480i Comp1]
▪ 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 are not need.
3.2.3. Download method
- The EDID data is automatically saved.
3.2.4. EDID DATA
NO
Item
CMD 1 CMD 2 Data 0
Enter Adjust
MODE
Adjust
‘Mode In’
A
A
0
0
When transfer the ‘Mode In’,
Carry the command.
ADC adjust
ADC
Adjust
A
D
1
0
Automatically adjustment
(The use of a internal pattern)
** HDMI 1 : 256Bytes
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0 00 FF FF FF FF FF FF 00 1E 6D CA 59 01 01 01 01
10 01 17 01 03 80 34 1D 78 EA 53 4D A3 56 4F 9E 26
20 0F 47 4A 21 08 00 81 80 81 C0 71 40 B3 00 81 40
30 90 40 95 00 A9 C0 66 21 56 AA 51 00 1E 30 46 8F
40 33 00 09 25 21 00 00 1A 02 3A 80 18 71 38 2D 40
50 58 2C 45 00 09 25 21 00 00 1E 00 00 00 FD 00 38
60 3D 1E 45 0F 00 0A 20 20 20 20 20 20 00 00 00 FC
70 00 32 44 20 48 44 20 4C 47 20 54 56 0A 20 01 30
80 02 03 21 F1 4F 84 05 03 02 20 22 10 11 13 12 14
90 1F 07 16 01 26 11 07 50 09 7F 07 65 03 0C 00 10
20 0F 47 4A 21 08 00 81 80 81 C0 71 40 B3 00 81 40
30 90 40 95 00 A9 C0 66 21 56 AA 51 00 1E 30 46 8F
40 33 00 09 25 21 00 00 1A 02 3A 80 18 71 38 2D 40
50 58 2C 45 00 09 25 21 00 00 1E 00 00 00 FD 00 38
60 3D 1E 45 0F 00 0A 20 20 20 20 20 20 00 00 00 FC
70 00 32 44 20 48 44 20 4C 47 20 54 56 0A 20 01 30
80 02 03 21 F1 4F 84 05 03 02 20 22 10 11 13 12 14
90 1F 07 16 01 26 11 07 50 09 7F 07 65 03 0C 00 10
A0 00 02 3A 80 18 71 38 2D 40 58 2C 45 00 09 25 21
B0 00 00 1A 01 1D 80 18 71 1C 16 20 58 2C 25 00 09
C0 25 21 00 00 9E 01 1D 00 72 51 D0 1E 20 6E 28 55
D0 00 09 25 21 00 00 1E 01 1D 80 D0 72 1C 16 20 10
E0 2C 25 80 09 25 21 00 00 9E 02 3A 80 D0 72 38 2D
F0 40 10 2C 45 20 09 25 21 00 00 1E 00 00 00 00 6F
B0 00 00 1A 01 1D 80 18 71 1C 16 20 58 2C 25 00 09
C0 25 21 00 00 9E 01 1D 00 72 51 D0 1E 20 6E 28 55
D0 00 09 25 21 00 00 1E 01 1D 80 D0 72 1C 16 20 10
E0 2C 25 80 09 25 21 00 00 9E 02 3A 80 D0 72 38 2D
F0 40 10 2C 45 20 09 25 21 00 00 1E 00 00 00 00 6F
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