32LW4500-ZB, 32LW450A-ZB, 32LW450N-ZB, 32LW450U-ZB (CHASSIS:LD01U) - LG TV Service Manual (repair manual). Page 15

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4) 3D HDMI EDID data
* Detail EDID Options are below
ⓐ Product ID
ⓑ Serial No: Controlled on production line.
ⓒ Month, Year: Week : ‘01’ -> ‘01’
Year : ‘2011’ -> ‘15’ fix
ⓓ Model Name(Hex):
ⓔ Checksum: Changeable by total EDID data.
ⓕ Vendor Specific(HDMI)
4.5. 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)
4.6. Outgoing condition Configuration
When pressing IN-STOP key by Service remote control, Red
LED are blinked alternatively. And then Automatically turn off.
(Must not AC power OFF during blinking)
4.7. Hi-pot Test
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.
- 15 -
Model Name
HEX
EDID Table
DDC Function
FHD Model
0001
01 00
Analog/Digital
MODEL
MODEL NAME(HEX)
all
00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20
INPUT
MODEL NAME(HEX)
HDMI1
78030C001000B82D20C00E01400A3C08201820982058203820
HDMI2
78030C002000B82D20C00E01400A3C08201820982058203820
HDMI3
78030C003000B82D20C00E01400A3C08201820982058203820
EDID C/S data
FHD
HD
HDMI
RGB
HDMI
RGB
check sum
Block 0
E2
1C
(Hex)
E1 (HDMI1)
Block 1
D1 (HDMI2)
C1 (HDMI3)
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
10
09
78
0A
EE
91
A3
54
4C
99
26
20
0F
50
54
A1
08
00
71
4F
81
80
01
01
01
01
01
01
30
01
01
01
01
01
01
02
3A
80
18
71
38
2D
40
58
2C
40
45
00
A0
5A
00
00
00
1E
1B
21
50
A0
51
00
1E
30
50
48
88
35
00
A0
5A
00
00
00
1C
00
00
00
FD
00
3A
60
3E
1E
53
10
00
0A
20
20
20
20
20
20
d
70
d
01
e
80
02
03
37
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
B0
f
E3
05
03
01
01
1D
80
18
71
1C
16
20
58
C0
2C
25
00
A0
5A
00
00
00
9E
01
1D
00
72
51
D0
1E
D0
20
6E
28
55
00
A0
5A
00
00
00
1E
02
3A
80
18
71
E0
38
2D
40
58
2C
45
00
A0
5A
00
00
00
1E
00
00
00
F0
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
e
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 R eference
Volta ge
Da ta (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
r
fa
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
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