LG 22MT41 Series Service Manual

- 10 -
LGE Internal Use Only
Copyright © LG Electronics. Inc. All right reserved.
Only for training and service purposes
3.1. ADC Process (Optional) : If ADC pro-
cesses as OTP, There is no need to
proceed internal ADC.
1) Enter Service Mode by pushing “ADJ” key.
2) Enter Internal ADC mode by pushing “►” key at “ADC
Calibration”
→ Caution: Using ‘P-ONLY’ button of the Adjustment R/C,
power on TV.
* ADC Calibration Protocol (RS232)
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 adjust-
ment
(The use of a internal
pattern)
Adjust Sequence
▪ aa 00 00 [Enter Adjust Mode]
▪ xb 00 40 [Component Input ]
▪ ad 00 10 [Adjust 480i & 1080p Comp]
▪ aa 00 90 End Adjust mode
* Required equipment : Adjustment R/C.
3.2. EDID Download
1) After enter Service Mode by pushing “ADJ” key.
2) Enter EDID D/L mode.
3) Enter “START” by pushing “OK” key.
→ Caution: - Never connect RGB/HDMI cable when EDID
downloaded.
* Edid data and Model option download (RS232)
NO Item CMD 1 CMD 2 Data 0
Enter
download MODE
Download
‘Mode In’
A A 0 0
EDID data and
Model option
download
Download A E 00 10
3.2.1. EDID
- HDMI : Checksum : 95 7E
3.3. Function Check
3.3.1. Check display and sound
■ Check Input and Signal items. (cf. work instructions)
1) TV(DTV, RF, Satellite(Satellite model))
2) AV (SCART/CVBS)
3) COMPONENT (480i)
4) HDMI1/2
(22MT48, 22LH450V&MT58 - PC : 1920 x 1080 @ 60Hz,
20/ 24/28/29MT48 - PC : 1366 x 768 @ 60Hz )
5) RGB(PC : 1920 x 1080 @ 60Hz)
6) PC Audio In
7) Headphone Out
8) USB
* Display and Sound check is executed by Remote control.
* Some models do not support AV & COMPONENT & RGB &
PC Audio In & Headphone Out. It depends on model spec.
→ Caution : Not to push the INSTOP KEY after completion if
the function inspection.
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0
2
3
21
F1
4E
84
5
3
2
20
22
10
11
13
12
14
10
1F
7
16
26
15
7
50
9
57
7
66
3
0C
0
10
0
20
80
1
1D
0
72
51
D0
1E
20
38
88
15
0
56
50
21
30
0
0
1E
1
1D
80
18
71
1C
16
20
58
2C
25
0
56
40
50
21
0
0
9E
1
1D
80
D0
72
1C
16
20
10
2C
25
50
80
C4
8E
21
0
0
9E
2
3A
80
D0
72
38
2D
40
10
60
2C
45
20
6
44
21
0
0
1E
2
3A
80
18
71
38
2D
70
40
58
2C
45
0
56
50
21
0
0
1E
0
0
0
0
7E
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0
0
FF
FF
FF
FF
FF
FF
0
1E
6D
CA
59
1
1
1
1
10
1
1A
1
3
80
33
1D
78
EA
62
75
A3
55
4F
A0
27
20
12
50
54
A7
6A
0
31
4F
45
4F
61
4F
81
0
1
1
30
1
1
1
1
1
1
66
21
56
AA
51
0
1E
30
46
8F
40
33
0
FD
1E
11
0
0
1E
0
0
0
FD
0
38
4B
1E
50
3D
9
0
0A
20
20
20
20
20
20
0
0
0
FC
0
32
60
44
20
48
44
20
4C
47
20
54
56
0A
20
0
0
0
FF
70
0
0A
20
20
20
20
20
20
20
20
20
20
20
20
1
95

LG 22MT41 Series Specifications

General

Brand	LG
Model	22MT41 Series
Category	LED TV
Language	English