Read LG 32LC4D (CHASSIS:LT73A) Service Manual online
- 9 -
ADJUSTMENT INSTRUCTION
1. Application Range
This spec. sheet is applied to all of the LT73A chassis
manufactured at LG TV Plant all over the world.
manufactured at LG TV Plant all over the world.
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 to
protect test instruments
However, the use of isolation transformer will help to
protect test instruments
2) Adjustment must be done in the correct sequence.
3) The adjustment must be performed at 25±5°C temperature
3) The adjustment must be performed at 25±5°C temperature
and 65±10% relative humidity if there is no specified
designation.
designation.
4) The input voltage of the receiver must be kept between
100-220V~, 50/60Hz.
5) Before adjustment, execute Heat-Run for 30 minutes at RF
no signal.
3. EDID
* Caution
1) Use the proper signal cable for EDID Download
- Analog EDID : Pin3 exists
- Digital EDID : Pin3 exists
- Digital EDID : Pin3 exists
2) Never connect HDMI & D-sub Cable at the same time.
3) Use the proper cables below for EDID Writing.
4) Download HDMI1, HDMI2 separately because HDMI1 is
3) Use the proper cables below for EDID Writing.
4) Download HDMI1, HDMI2 separately because HDMI1 is
different from HDMI2.
3.1. EDID Data
3.2. Data
(1) ANALOG (128 bytes)
(2) HDMI 1 (256 bytes)
(3) HDMI 2 (256 bytes)
- Product ID
- Serial No: Controlled on production line.
- Month, Year: Controlled on production line:
- Serial No: Controlled on production line.
- Month, Year: Controlled on production line:
ex) Monthly : ‘01’ -> ‘01’
Year : ‘2007’ -> ‘11’
- Model Name(Hex):
- Checksum: Changeable by total EDID data.
- Checksum: Changeable by total EDID data.
D-sub to D-sub
DVI-D to HDMI or HDMI ro HDMI
For HDMI EDID
For Analog EDID
Item
Manufacurer ID
Version
Revision
Condition
GSM
Digital : 1
Digital : 3
Data(Hex)
1E6D
01
03
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
Product ID
Serial No
0x01 Month/Year 01
03
01
46
27
78
EA
D9
B0
A3
57
49
9C
25
0x02 11
49
4B
A5
6E
00
31
40
45
40
61
40
D1
C0
01
01
0x03 01
01
01
01
01
01
1B
21
50
A0
51
00
1E
30
48
88
0x04 35
00
BC
86
21
00
00
1C
26
36
80
A0
70
38
1F
40
0x05 50
20
85
04
BC
86
21
00
00
18
00
00
00
FC
00
4C
0x06 47
20
54
56
0A
20
20
20
20
20
20
20
00
00
00
FD
0x07 00
3C
4B
1D
43
0E
00
0A
20
20
20
20
20
20
00
C/S
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 Product ID
Serial No
0x01
Month/Year
01
03
80
46
27
78
EA
D9
B0
A3
57
49
9C
25
0x02 11
49
4B
A5
6E
00
31
40
45
40
61
40
D1
C0
01
01
0x03 01
01
01
01
01
01
02
3A
80
18
71
38
2D
40
58
2C
0x04 45
00
C4
8E
21
00
00
1E
1B
21
50
A0
51
00
1E
30
0x05 48
88
35
00
BC
86
21
00
00
1C
00
00
00
FC
00
4C
0x06 47
20
54
56
0A
20
20
20
20
20
20
20
00
00
00
FD
0x07 00
32
4B
1C
43
0F
00
0A
20
20
20
20
20
20
01
C/S
0x00 02
03
21
F1
4E
02
11
01
03
12
13
04
14
05
21
1F
0x01 20
22
10
23
09
07
07
83
01
00
00
65
03
0C
00
10
0x02 00
01
1D
00
BC
52
D0
1E
20
B8
28
55
40
C4
8E
21
0x03 00
00
1E
01
1D
00
72
51
D0
1E
20
6E
28
55
00
C4
0x04 8E
21
00
00
1E
01
1D
80
D0
72
1C
16
20
10
2C
25
0x05 80
C4
8E
21
00
00
9E
8C
0A
D0
90
20
40
31
20
0C
0x06 40
55
00
C4
8E
21
00
00
18
4E
1F
00
80
51
00
1E
0x07 30
40
80
37
00
BC
88
21
00
00
18
00
00
00
00
C/A
0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0A 0x0B 0x0C 0x0D0x0E 0x0F
0x00 00
FF
FF
FF
FF
FF
FF
00
1E
6D Product ID Serial No
0x01 Month/Year 01
03
80
46
27
78
EA
D9
B0
A3
57
49
9C
25
0x02 11
49
4B
A5
6E
00
31
40
45
40
61
40
D1
C0
01
01
0x03 01
01
01
01
01
01
02
3A
80
18
71
38
2D
40
58
2C
0x04 45
00
C4
8E
21
00
00
1E
1B
21
50
A0
51
00
1E
30
0x05 48
88
35
00
BC
86
21
00
00
1C
00
00
00
FC
00
4C
0x06 47
20
54
56
0A
20
20
20
20
20
20
20
00
00
00
FD
0x07 00
32
4B
1C
43
0F
00
0A
20
20
20
20
20
20
01
C/S
0x00 02
03
21
F1
4E
02
11
01
03
12
13
04
14
05
21
1F
0x01 20
22
10
23
09
07
07
83
01
00
00
65
03
0C
00
20
0x02 00
01
1D
00
BC
52
D0
1E
20
B8
28
55
40
C4
8E
21
0x03 00
00
1E
01
1D
00
72
51
D0
1E
20
6E
28
55
00
C4
0x04 8E
21
00
00
1E
01
1D
80
D0
72
1C
16
20
10
2C
25
0x05 80
C4
8E
21
00
00
9E
8C
0A
D0
90
20
40
31
20
0C
0x06 40
55
00
C4
8E
21
00
00
18
4E
1F
00
80
51
00
1E
0x07 30
40
80
37
00
BC
88
21
00
00
18
00
00
00
00
C/A
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