LG 55LH80YD, Service Manual

Page: 24 / 66

- 24 - LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
NTS
C/VSB
Half-NIM
TUN
ER
LCD/PD
P
DIGITAL T
V
P
R
O
C
ES
SOR
[MSD3
36
8
G
V]
HD
M
I
Sw
it
c
h
(4-to-1)
[T
D
A
9996]
CE
C
_
RX
HDM
I
DDC_
RGB
A
V
1
_
CV
BS
_
IN
A
V
2
_
CV
BS
_
IN
CO
M
P
1-Y
/Pb/P
r
CO
M
P
2-Y
/Pb/P
r
DS
UB
-R
/G
/B
IF
AN
A
L
O
G
VI
D
E
O
IN
PUT
DIGI
T
A
L
VI
D
E
O
IN
PUT
MiCOM
[W
T61P8S]
I2C_CH4
CE
C
_
RX
DDC_
RGB
I2C_CH1
LVD
S
Recei
v
e
r
[D
T
C
30
L
M
36
]
DU
A
L
LV
D
S
HD
M
I
Transmitter
[S
iI
9134]
HD
M
I
De
MUX
[P
I3HDM
I1210
]
RF
Transcei
v
e
r
[S
B9
1
1
0
]
Ne
w
ork
Processor
[S
B
9
20]
HD
M
I
R
e
ce
iv
er
[S
i
9125]
30
I2C_CH2
HDM
I
3.3V_2
3.3V_L
3.3V_2
3.3V_2
1.8V_1
3.3V_2
5.0V_1
TX
_
S
E
L
1.26V_1
1.8V_D
DR
3.3V_1
CE
C
_
TX
SiBEA M I/ F
I2C_CH4
24
Wireless Module
5.0V_
ST
3.3V_L 2.5V_L 1.0V_L
2.5V_L 1.5V_L 1.2V_L 1.0V_L
3.3V_L
1.8V_L
Composi
te
Video
IN
Componen
t
(Y,Pb,Pr)
IN
AN
T
/
CA
B
L
E
IN
RGB
IN
HD
M
I
IN
(x4)
HD
M
I
OUT
5.0V_T
U
I2C_CH6
FE
_
V
M
A
IN
FRONT
BA
C
K
TX
_
S
E
L
CE
C
_
TX
I2C_CH2
VSB
/Q
A
M
De
modu
lator
[L
GD
T3305]
3.3V_
V
S
B
1.2V_
V
S
B
I2C_CH2
TS
I2C_CH2
I2C_CH4
I2C_CH6
1.8V_1
C
VBS0/R
F_C
VBS
FE_VMA
IN
C
VBS3/S
ID
E_C
VBS
AV1_C
VBS_IN
C
VBS2/SC2_C
VBS
AV2_C
VBS_IN
RIN2P/,
G
IN2P/COMP_Y
+,
BIN2P/COMP_P
B+
C
O
M
P2_Pr
, C
OM
P2_
Y
, C
OM
P2_Pb
H
SYNC1, VSY
N
C
1
RIN1P/DSUB_
R
, G
IN1P/DSUB_G
,
G
IN1P/D
S
UB_B
DS
UB_
H
YS
N
C
,
DSUB_
V
S
Y
N
C
DS
UB
_
R
, DS
UB
_
G
,
DS
UB
_
B
R
IN
0
P/SC1_
R
,
G
IN
0P/SC1_G
,
B
IN
0
P/SC1_B
C
O
M
P
1_Pr
, C
OM
P1_
Y
, C
O
M
P
1_Pb
RX
BC
KP/N
R
X
B0P/N
RX
B1P/N
R
X
B2P/N
DDCD
_B_
D
A
/C
K
H
D
MI CLK+
/-
RX
0+
/-
R
X
1+
/-
RX2+
/-
H
D
MI_SCL/SDA
SA
TURN6 PORT
VID
E
O INP
U
T
V
ideo Path Diagram
BLOCK DIAGRAM_AV BOX