Read LG 42LG53FR (CHASSIS:LP81A) Service Manual online
C
2008
- 22 -
BLOCK DIAGRAM
AV
1 in
SideAV in
(AV
2 in)
Comp1 in
Comp2 in
RGB in
(D/L)
CVBS IN
Y/
Pb/
Pr
IN
R/
G/B/H
S/
VS
IN
CVBS IN
LINE
OUT
LINE
IN
AM
P
_
M
U
T
E
R
S
-232C
Rx/
T
x
M
X
3232
RF
(Tuner)
PC Audio
in
DISPL
AY M
O
DUL
E
EDID N
V
M
EDID N
V
M
HDMI1
HDMI2
HDMI3
USB
T
M
D
S
351P
A
G
HDMI MUX
Zor
an
V
A
D
D
IS
-966XD
MPEG
Dec
ode
r
DDR MEM
DDR MEM
SERI
A
L
FL
A
S
H
Mstar
Rom
eo
L
G
E6891
C
D
T
W
9
910
Su
b D
eco
de
r
N
T
P3000
A
Digital
A
udi
o A
M
P
MA
IN
NV
M
M
C
7
4
H
C4066
A
udio SW
L
M
324
X4
A
M
P
SERI
A
L
FL
A
S
H
B
D
2041
Protect IC
EDID N
V
M
DDC/HDP/CEC
TMDS(HDMI in)
DDC/HPD/CEC
TMDS(HDMI in)
TMDS(HDMI in)
U
S
B
(A
V
I/O,
Da
ta I/O
)
+5V
CVBS
OUT
656 I
N
SW_RE
SE
T
P
A
R
T
_I
2
C
P
A
R
T
_I
2C
SW_RE
SE
T
I2
S O
U
T
LVDS
MPE
G R
X
/TX
M
P
EG
RE
SE
T
I2
S I
N
656 I
N
TMDS(HDMI in)
DDC/HPD/CEC
DDC/HPD/CEC
[CEC not thr
ou
gh HDMI MUX,
dir
e
ct
J
A
C
K
to
M
A
IN
IC]
DDC
DDC
DDC
U
A
RT
_R
x/T
x
AU
D
IO
_
S
W
LINE
IN
LINE
IN
LINE
IN
Y/
Pb/
Pr
IN
LINE
IN
Y/C IN
LINE
IN
EDID N
V
M
ROM_
I2
C
DSUB_DDC
x0.55
x0.55
x0.55
x0.55
S_
VI
D
E
O_
DE
T
LINE
_MUTE
LINE
OUT
x4
x0.55
LINE
IN
CVBS IN
SIF IN
TUNER_
I2
C
P
A
R
T
_I
2C
HDMI_S
EL
(Option)
(Option)
(Option)
Spk
Out
1W(Mono)
SW_RE
SET
T
P
A
3107D
A
udi
o A
m
p
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