Read LG 42LG70YR (CHASSIS:LP81D) Service Manual online
- 19 -
BLOCK DIAGRAM
PC_Aud
io
RF
RGB
(PC On
ly)
HD
M
I1, 2
, 3
(DT
V
Only
)
AV1
MNT
_
O
U
T
Side AV2
COMP1
COMP2
USB
T
M
DS
/D
DC/
H
PD_SI
NK
H
D
MI
_
S
E
L
/H
D
MI
_
II
C
TM
D
S
Mu
x
T
M
DS/DD
C
/H
P
D
_
S
/W
T
X
CO
[0
:4
] /
T
X
CE
[0:4
] /
T
X
CLKO /
T
X
CLKE
RG
B/H
V
S/IIC_
D
SU
B
CV
BS
_V
IN
COM
P
1 Y
P
b
P
r
COM
P
2 Y
P
b
P
r
SI
D
E
_C
V
B
S/
SI
D
E
_Y
C
T
V
_
M
A
IN/
M
A
IN_
S
IF
AUD
IO
S/
W
COMPONENT
or
S
ID
E
IC602
SIF
A
M_A
U
D
IO
COM
P1_L
R
COM
P2_L
R
SI
D
E
_L
R
M
N
T
_LR_OUT
SW/LR
NTP3000
Digital AMP
SPK 2CH
/SPK_HOTEL
/SPK_HOTEL
24C02
EEPR
OM
DDC
HDM
I_5V_D
ET
(H
PD)
/H
PD
_
M
S
T
/CEC
24C02
EEPR
OM
PC
_
A
UD
CV
BS
_
L
R
IN
MN
T
_
V
O
U
T
(A
M
P
:
GA
IN
X 4)
/M
UT
E
_
L
IN
E
AM
P
GA
IN X
4
IC601
AUDIO_SW
DDC
SC
L/
S
D
A
_
T
U
N
E
R
SEC
A
M
_
L
DDR
(2
56MB
IT)
M
A
DR
[0:11]
MDA
T
A
[0
:1
5
]
SUB
DE
CODER
D
E
C_656[0
:7
]
/ D
E
C_656_CLK
SW_RESET / IIC_PART /
PIP_V(
GAIN
X 4)
SW
_
R
E
S
ET
/ IIC_P
A
R
T
I2S
MU
T
E
_
M
A
IN
/
A
C
_DE
T
A
M
P_M
U
T
E_HOT
EL
PSU
RL_ON/S
E
LECT
/
DI
M
M
ING/SY
NC
MN
T
_
5
V
/A
C_
DE
T
/S
C_R
S
T
AU
D
IO
_
R
Ms
ta
r
RA
M_
C
A
S
/RA
S
RA
M_
C
S
/W
E
R
A
M
_
CK
E/CLK
R
A
M
_
LDQS/UDQ
S
R
A
M
_
B
A
[0
:1
]
R
A
M
A
_[
0:
12
]
R
A
M
D
Q
S
_[
0:
1
5
]
FRC_R/G/B_Out_ 0 ~ 9
FRC_DEN/CLK_Out
FRC_HS/VS_Out
RA
M_
C
A
S
/RA
S
RA
M_
C
S
/W
E
R
A
M
_
CK
E/CLK
R
A
M
_
LDQS/UDQ
S
R
A
M
_
B
A
[0
:1
]
R
A
M
A
_[
0:
12
]
R
A
M
D
Q
S
_[
0:
1
5
]
SC
L/
S
D
A
_
P
A
R
T
FRC_RE
S
E
T
A
O
_
T
X
[0:
4]
A
E
_T
X[
0:
4
]
EO
_T
X[
0
:4
]
B
E
_
T
X
[0:
4]
A
O
/A
E
/EO
/B
E_CL
K
MODULE
SC
L/
S
D
A
_
P
A
R
T
SC
L/
S
D
A
_
P
A
R
T
HDMI_SCL/SDA
24C64
EEPROM
SCL/
SD
A_
PA
RT
SC
L/
S
D
A
_
P
A
R
T
IO
_
E
XP
A
NDE
R
SC
L/
S
D
A
_
P
A
R
T
DD
R2
(256
M
B
IT)
M
T
K (FRC
CHIP)
M
X
25L8005
FL
A
S
H MEMORY
(2
M
B
YTE
)
SP
I_CZ/CLK
SP
I_D
SP
I_CZ/CLK
SP
I_D
M
X
25L4005
FL
A
S
H MEMORY
(512
KBY
TE)
SP
I_CZ/CLK
SP
I_D
RESE
T
Zoran
V
A
DD
IS-
966X
D
MPEG
Decoder
DDR
M
E
M
US
B(
A
V
I
/O, D
a
ta
I/O
)
BD
20
41
Protect
IC
+5
V
SER
IA
L
FL
A
S
H
M
PEG
RX/T
X
M
PEG
RE
S
E
T
I2S IN
656 IN
To M
s
tar
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