Read LG 42LD455B / 42LD455H (CHASSIS:LC01W) Service Manual online
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BLOCK DIAGRAM
1. INPUT
Sa
tu
rn
7
MSD301
(I
C
101)
Sa
tu
rn
7
Sa
tu
rn
7
MSD
301
MSD
301
(IC1
0
(IC1
0
1
1
)
)
Opt
ion:
S
7
S7
-T
c
o
n
NI
M
T
U
NER
TU3
701
(Optio
n: T
U
370
2
HNIM
tuner
)
NI
M
T
U
NER
TU3
701
(Optio
n: T
U
370
2
HNIM
tuner
)
3
: RF
_SWITCH
_CTL
, F
E
_B
OOSTER
_CT
L,
Tun
er
Re
s
e
t
2
: TU_CVBS/
SI
F
(A
T
V)
Inn
er
De
mo
d:
L
G
3911
4
: T
U
_
S
CL
/SD
A
,
De
mo
d_S
C
L
/S
D
A
1
1
: T
S
_S
y
n
c
/d
a
ta
[0
..
7
]Ö
(DTV)
(J
K1603
)
7:Comp_DE
T,
Y
+/-,Pb+/-,Pr+/-
2:
Co
mp
_R/L
_I
N
J
K
1604
2:CVB
S
_DET,C
VBS
IN
2:
C
V
BS
_R/L
_I
N
EE
PRO
M
(2
K,
I
C
400
)
EE
PRO
M
(2
K,
I
C
400
)
(P
1104
)
(J
K1102)
9
: R+
/-
,G+
/-, B
+
/-,H
/V
s
yn
c,
D
ET, IS
P
_
RX
D
/T
X
D
2: RGB_DDC_SC
L
/
S
D
A
2:
P
C
_
R
/L
_I
N
(J
K
1101)
MA
X3232
(I
C
1101
)
MA
X3232
MA
X3232
(I
C
1101
(I
C
1101
)
)
2 :
S
IDE
_U
SB
_D
M
/D
P
1 : 5V
_U
SB
2
: USB
_CTL
, U
S
B_
OCD
M
IC
2009
YM6
-TR
(I
C
2301
)
M
IC
2009
Y
M
6
M
IC
2009
Y
M
6
-
-
TR
TR
(IC
(IC
23
23
01
)
01
)
RGB In
PC A
udi
o
AV
1
COMP
1
USB
(Sid
e)
(P2301)
SPD
IF (Di
g
ital)
J
K
103
1 : S
P
D
IF
_
O
U
T
EXT SPK
2:
E
X
T
_
O
U
T
_
L
/R
(J
K802
)
8:HDMI1
_D
0+/-,
D1+/-,D
2+/-,CK+
/-
2: DDC
_SCL
1
/S
D
A
1
EE
PRO
M
(2K
,IC
8
0
1
)
EE
PRO
M
(2K
,IC
8
0
1
)
HDMI1
In
(J
K803
)
2: DDC
_SCL
4
/S
D
A
4
EE
PRO
M
(2K
,IC
8
0
4
)
EE
PRO
M
(2K
,IC
8
0
4)
HDMI4
In
8:HDMI4
_D
0+/-,
D1+/-,D
2+/-,CK+
/-
2: S
7
_RXD/TXD
R
S
232
J
K
3302
2:S
id
e
A
V
_DET/
CVBS IN
2:
C
V
BS
_R/L
_I
N
AV
2
(Sid
e)
T
P
A
3124D2
PWP
R
(IC1
0)
T
P
A
3124D2
PWP
R
T
P
A
3124D2
PWP
R
(IC1
0)
(IC1
0)
HP_
L
/R
OU
T
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