22LH250C (CHASSIS:LD01X) - LG TV Service Manual (repair manual). Page 13

Read LG 22LH250C (CHASSIS:LD01X) Service Manual online

1) HD RGB EDID data
2) HD HDMI EDID data
* Detail EDID Options are below
ⓐ Product ID
ⓑ Serial No: Controlled on production line.
ⓒ Month, Year: Controlled on production line:
ex) Monthly : ‘02’ -> ‘02’
Year : ‘2009’ -> ‘13’
ⓓ Model Name(Hex):
ⓔ Checksum: Changeable by total EDID data.
ⓕ Vendor Specific(HDMI)
4.6. V-COM Adjust(Only LGD(M+S) Module)
- Why need Vcom adjustment?
A
The Vcom (Common Voltage) is a Reference Voltage of
Liquid Crystal Driving.
-> Liquid Crystal need for Polarity Change with every frame.
- Adjust sequence
· Press the PIP key of th ADJ remote control.(This PIP key is
hot key to enter the VCOM adjusting mode)
(Or After enter Service Mode by pushing “ADJ” key, then
Enter V-Com Adjust mode by pushing “
G
” key at “10. V-
Com”
· As pushing the right or the left key on the remote control,
and find the V-COM value which is no or minimized the
Flicker. (If there is no flicker at default value, Press the exit
key and finish the VCOM adjustment.)
· Push the “OK” key to store value. Then the message
“Saving OK” is pop.
· Press the exit key to finish VCOM adjustment.
(Visual Adjust and control the Voltage level)
4.7. Outgoing condition Configuration
- When pressing IN-STOP key by SVC remocon, Red LED
are blinked alternatively. And then Automatically turn off.
(Must not AC power OFF during blinking)
Confirm whether is normal or not when between power
board’s ac block and GND is impacted on 1.5 kV(dc) or 2.2
kV(dc) for one second.
Model Name
HEX
EDID Table
DDC Function
HD Model
0000
00 00
Analog/Digital
- 13 -
MODEL
MODEL NAME(HEX)
LG TV
00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20
INPUT
MODEL NAME(HEX)
HDMI1 65030C001000011D
HDMI2 65030C002000011D
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
00
00
FF
FF
FF
FF
FF
FF
00
1E
6D
a
b
10
c
01
03
68
73
41
78
0A
CF
74
A3
57
4C
B0
23
20
09
48
4C
A1
08
00
81
C0
61
40
45
40
31
40
01
01
30
01
01
01
01
01
01
66
21
50
B0
51
00
1B
30
40
70
40
36
00
7E
8A
42
00
00
1E
01
1D
00
72
51
D0
1E
20
50
6E
28
55
00
7E
8A
42
00
00
1E
00
00
00
FD
00
3A
60
3E
1F
46
10
00
0A
20
20
20
20
20
20
d
70
d
00
e
80
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
90
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
A0
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
B0
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
C0
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
D0
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
E0
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
F0
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
00
00
FF
FF
FF
FF
FF
FF
00
1E
6D
a
b
10
c
01
03
80
73
41
78
0A
CF
74
A3
57
4C
B0
23
20
09
48
4C
A1
08
00
81
C0
61
40
45
40
31
40
01
01
30
01
01
01
01
01
01
66
21
50
B0
51
00
1B
30
40
70
40
36
00
7E
8A
42
00
00
1E
01
1D
00
72
51
D0
1E
20
50
6E
28
55
00
7E
8A
42
00
00
1E
00
00
00
FD
00
3A
60
3E
1F
46
10
00
0A
20
20
20
20
20
20
d
70
d
01
e
80
02
03
20
F1
4E
10
1F
84
13
05
14
03
02
12
20
21
90
22
15
01
26
15
07
50
09
57
07
f
A0
f
80
18
71
1C
16
20
58
2C
25
00
7E
8A
42
00
B0
00
9E
01
1D
00
80
51
D0
0C
20
40
80
35
00
7E
8A
C0
42
00
00
1E
8C
0A
D0
8A
20
E0
2D
10
10
3E
96
00
D0
7E
8A
42
00
00
18
02
3A
80
18
71
38
2D
40
58
2C
E0
45
00
7E
8A
42
00
00
1E
01
1D
80
D0
72
1C
16
20
F0
10
2C
25
80
7E
8A
42
00
00
9E
00
00
00
00
00
D5
Row  Li ne
Column  Line
C
LC
C
ST
Pane l
S
Y
S
T
E
M
Gat
e
 Driv
e
 IC
So urce D r i v e  I C
Circuit Block
Ti m i n g  
Co nt r o ll e r
Po w e r  
Blo ck
V
COM
Ga mma
Re f e r e nce V o ltage
Gamm a Reference
Volta ge
Data (R ,G,B ) & C ont ro l s ignal
Con t rol si gnal
Data (R ,G,B ) &
Con t rol si gnal
In
te
rf
a
c
e
TFT
Po w e r  I n p u t
Power Input
Da t a  I n p u t
Da t a  I n p u t
V
COM
Liquid 
Crys tal
V
COM
Display
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