LG 32LF550B, Service Manual

Page: 14 / 74

- 14 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
BLOCK DIAGRAM
1. MAIN
(P
1101)
30P HD LV DS wa fer
51P FHD LVDS wa fer
(P
1100
)
CK+
/-,
D0
+/
-,
D1
+/
-,
D2
+/
-_
HDMI2
DDC_
SC
L/S
DA
_2,
HDMI_
CE
C
Se
rial
Fl
as
h
(8
Mb
it)
IC1300
SPI
_S
CK/
SD
I/SD
O/
CS
Sy
st
em
EEPR
OM
(2
56
Kb
it)
IC10
4
I2
C_
SC
L/
SD
A
NAND
FL
AS
H
(1
Gb
it)
IC10
2
PC
M_
A[
0-7]
,…
RX
A0
+/
-~
RX
A4
+/
-,
RX
AC
K+
/-
RX
B0
+/
-~
RX
B4
+/
-,
RX
B
CK+
/-
SP
K_
R
SP
K_
L
AM
P_SC
L/
SD
A
AU
D_
MA
ST
ER
_C
LK
,
AU
D_
LRCH
,
AU
D_
LRCK,
AU
D_
SC
K
ST
A3
80
BW
(IC3401)
Co
nn
ect
or
(P
600)
K
EY1
/2
, LE
D_
R,
IR
REAR
HDMI
1
(J
K8
01
)
Ma
in
SO
C
M1
A
-256M
B
‰œ“›T•
(IC1
01
)
SPD
IF
_O
UT
SPD
IF(
Op
tic)
(J
K1
001)
CO
MP
2_L
/R
_I
N
CO
MP
2_Y
+/
AV
_C
VB
S_
IN,
CO
MP
2_P
b+
/P
r+
AV
2_
L/R
_I
N
AV
2_C
VB
S_
IN
Co
mp
1
&
AV
1
(JK
1701)
AV
2
TU
_S
CL
/ SD
A
SI
F
D_
IF
CV
BS
SI
DE
US
B
(JK
700)
HDMI
2(
MHL)
(JK
803)
CK+
/-,
D0
+/
-,
D1
+/
-,
D2
+/
-,_H
DMI4
, DDC_
SC
L/S
DA
_4,
HDMI_
CE
C
SI
DE
_U
SB
_DM/DP
US
B
1_O
CD/CTL
TPS6
5281
+5
V_
US
B
H
P_L
/R
OU
T,
SI
DE
_H
P_
MUTE