LG 32LC7D (CHASSIS:LA73E) Service Manual ▷ View online
- 21 -
- Video signal path for Composite
C
o
m
p1_
Y
8
(3A)
C
o
m
p1_Pb
11
(2A)
C
o
m
p1_P
r
16
(1A)
C
o
m
p2_
Y
9
(3B)
C
o
m
p2_Pb
14
(2B)
C
o
m
p2_P
r
1
(1B)
2
12
7
SW1 SW2 SW3
6(Out
3)
Comp
_
Y
5(Out
2)
Comp
_
P
b
3(Out
1)
Comp
_
P
r
L
H
8(3A)
11
(2
A)
16
(1
A)
RGB
_
G
9(3B)
R
G
B_
B 14
(2
B
)
RGB
_R
1(1B)
2
12
7
SW1 SW2 SW3
6(
O
u
t3
)
Y
/G
t
o
LP
F
5(Out
2)
P
b
/B
t
o
LP
F
3
(Ou
t1
)
P
r/
R
to
LP
F
L
H
IC500
1
IC500
2
Y
/G
3
(Y
IN
)
Pb
/B
5
(PB
IN
)
P
r/
R
7
(PB
IN
)
1(E
XT
_
S
YNC)
1
8
(S
YNC
_IN)
16
C
o
mp_Y
1
5
Com
p
_P
b
1
4
Com
p
_Pr
44(G
IN+)
4
3
(S
OGIN)
4
1(B
IN+)
4
6(RIN+)
IC704
IC400
9
RGB
_
G
H S
y
n
c
740
4
V S
y
nc
RGB
_B
RGB
_R
BCM3550
GP
IO
GPIO fo
r sy
n
c
sele
ct
ion
HD-DVI
D
a
ta
[24]
H sy
n
c/
V
sy
n
c
/DE/Clock
H,V Sy
nc/Cloc
k
RGB
_HS
GPIO fo
r sy
n
c
sele
ct
ion
RGB
_HS
R
G
B_
VS
RGB_H
S
RGB_VS
GP
IO
GP
IO fo
r Co
m
ponent
1
GP
IO
GP
IO fo
r Co
m
ponent
2
GP
IO fo
r Co
m
ponent
2
GP
IO fo
r Co
m
ponent
1
IC100
1
FMS6407
MST3361
MM1
73
1
MM1
73
2
DA
TA
_
O
U
T
H/
V/DE/CLK
LP
F_
C
T
RL0
LP
F_
C
T
RL1
LPF_
C
T
RL0
LP
F_
C
T
RL1
- 22 -
- Video signal path for HDMI
IC704
BCM3550
GP
IO
GP
IO fo
r Inte
rr
upt
HD-DVI
Dat
a [0:
23]
H sy
n
c/
V
sy
n
c
/DE/Clock
H,V Sy
nc/Cloc
k
GP
IO
GP
IO fo
r Pow
e
r
dete
ct
ion
1
GP
IO
GP
IO
fo
r
Ho
t p
lug de
te
ct
ion 1
IC100
1
MST3361
TMDS1 RX0+/-
TMDS1 RX1+/-
TMDS1 RX2+/-
TMDS1 RX3+/-
DD
C SDA
1
DD
C SCL
1
EEP
ROM
For
EDI
D
DD
C SDA
1
DD
C SCL
1
TMDS1
INPUT
DDC1
INPUT
TMDS2 RX0+/-
TMDS2 RX1+/-
TMDS2 RX2+/-
TMDS2
RX
3
+
/-
DD
C SDA
2
DD
C SCL
2
EEP
ROM
For
EDI
D
DD
C SDA
2
DD
C SCL
2
TMDS2
INPUT
DDC2
INPUT
H
DCP
SD
A
H
DCP
SC
L
EEP
ROM
For
HD
C
P
NDA
NCL
INT
DATA
_
OUT
H,V Sy
nc/DE
/Clock
HDMI 1
HDMI 2
GP
IO
GP
IO fo
r Pow
e
r
dete
ct
ion
2
GP
IO
GP
IO
fo
r
Ho
t p
lug de
te
ct
ion 2
GP
IO fo
r Pow
e
r
dete
c
ti
on
2
GP
IO
fo
r
Ho
t p
lug de
te
ct
ion 2
GP
IO fo
r Pow
e
r
dete
c
ti
on
1
GP
IO
fo
r
Ho
t p
lug de
te
ct
ion 1
- 23 -
- Audio signal path for all
SIF from
T
U
N
ER
CXA2069
Side A
V
V,LR
Rear A
V
V, LR
Rear S
YC, LR
Side S
YC, LR
IN1
IN4
IN1
IN4
IN3
IN4
Comp_1
LR
Comp_2
LR
RGB(Phone
)
LR
OUT
1/
R
OUT1/L
A
N
T/ Cable
TUNER
AU
D
IO
A
D
C
(C
S
5331
)
Audio R
I2
S_S
C
K_I
N
Audio L
BCM3550
SIF
I2S
_
LRCH
_IN
I2S
_
LRCK
_
IN
I2S_SCK_IN
I2S_LRCH_IN
I2S_LRCK_IN
SPDIF_IN_P
S
P
DI
F
f
ro
m
M
S
T3361
_R
MNT_Out
AU
D
IO
D
A
C
(C
S
4344
)
I2S_SCK_OUT
I2S_LRC
H_O
UT
I2S_LRCK_OUT
I2
S_S
C
K_O
U
T
I2S
_
LRCH
_
O
UT
I2S
_
LRCK
_
O
U
T
_L
MNT_Out
A
n
al
og L_
OUT
Audio
AMP
(T
PA3100
)
SPDIF Out
SPDIF_OUT
_
P
AUD_LEFT
_
P
AUD_LEFT
_
N
AUD_RIGHT
_N
AUD_RIGHT
_P
S
PK_L_
P
S
PK_L_
N
S
PK_
R_
N
S
PK_
R_
P
A
n
al
og R_
OUT
M
C
3
307
(OP-
A
M
P)
IF_P from
T
U
NER for DTV
IF_N from
T
U
NER for DT
V
IF_P
IF_N
- 24 -
- Audio Link system
BCM3550
CXA2069
+5V
4.7
k(
R
5097
)
22
(R
3126
)
C
O
M
P
1_S
W
+5V
4.7
k
22
(R
3125
)
C
O
M
P
2_S
W
AE
1
AC4
0
(R3072
)
2.7
k
(R
5128
)
HDMI_P
OWER
_
1
AD2
4
0
(R3075
)
HDMI_P
OWER
_
2
AC2
2
Y2
3
5(
GND)
+9V
100
k
(R
5027
)
A
V
1_S
W
+9V
100
k
(R
5069
)
A
V
2_S
W
6(S
2
-1
)
1
3
(S
2-
2)
0
(R5088
)
100
(R
5079
)
J5005
J5004
J5007
P5001
22
(R
3052
)
/R
GB-PC
5V_
H
IG
H
5V_
H
IG
H
9V_
H
IG
H
9V_
H
IG
H
5V_
H
IG
H
5V_
H
IG
H
0V_
H
IG
H
¥ In case of R
G
B-PC
,
It
require
H/W
work.
¥
Plug-IN
(LO
W
),
Plug-O
U
T
(
H
IG
H)
P7007
P7008
P7004
+5V
10
k
1k
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