LG 22LG300C (CHASSIS:LD85A) Service Manual ▷ View online
- 25 -
BLOCK DIAGRAM
LV
D
S
L
G
E
7
363C
(I
C
1
0
0
)
STM
A
V
3
4
0
(I
C
7
00)
N
T
P
300
0A
(I
C
1000
)
SP
(
R
)
SP
(
L
)
5
V
_A
N
T
_M
N
T
CI
S
lo
t
(P
8
0
0
)
EE
PR
O
M
KI
A
7
4
2
7
(I
C
104)
I2
C_
D_
T
U
/
I
2
C_
A
_
T
U
K
EY1
/
2
TV Tuner
BO
O
S
T
E
R
SI
F
TV
_
C
V
B
S
DDR
M
e
m
o
ry
25
6M
b
(
IC
300)
SC
1
_
R
/
G
/
B
DS
U
B
_
R
/
G
/
B
R/
G
/B
P
C
_L
/
R
_I
N
COM
P
_
Y
/
P
b
/
P
r
COM
P
_
L
/
R
_
IN
D
S
U
B
_H
/
V
_S
Y
N
C
MA
X
3
2
3
2
(I
C
702)
D
DC/
U
A
R
T-T
x
/
R
x
HD
M
I
Sw
it
c
h
(I
C
902
)
EE
PR
O
M
HDM
I_
I2
C
DD
C_
I2
C*
2
CE
C
TM
D
S
*
2
US
B
_
DM
/
D
P
5
V
_
HDM
I
PCM_ADD
PCM_DATA
TS_Parallel
TU
_
T
S
_
D
A
TA
KI
C
7
SZ
3
2
F
U
(I
C
8
0
2
)
PCM_CD_ON
CI
_
CD_
1
/
2
IIS
MUT
E
LE
D
_
G/
R
&
IR
DT
V
/
T
V
_
V
OU
T
SC
1
_
L
/
R
_
IN
SC
1
_
C
V
B
S
_
IN
LC
D
H
D
Pa
n
e
l
RE
S
E
T
I2
C
I/
O
E
x
p
a
n
d
e
r
(I
C
103)
I2
C
_
A
_
T
U
TS_Serial
74L
V
C
541
A
(I
C
800)
DD
R
M
e
m
o
ry
32M
B*
2
(
IC
300,
301)
EEP
RO
M
Sid e_Y/ C/ V/ L/ R
DD
R
M
e
m
o
ry
25
6M
b
(
IC
3
00)
Fl
a
s
h
M
e
m
o
ry
8M
B*
2
(
IC
106,
1
07)
IR
&
C
o
n
tr
o
l
B/
D
24
C
512
(I
C
105)
D
T
V
/
T
V
_L
/
R
_O
U
T
HP
D*
2
74L
X
1
G
14C
(I
C
1
300)
Bu
zze
r
(B
U
1300
)
PW
M
LE
D
C
lo
c
k
B/
D
P
IC
16F
819
(I
C
1
303)
I2
C
T
P
A
6011A
(I
C
1
001)
EXT
_
SP
K
(J
K
600
)
IR
_
O
UT
(T
o
R
S
232
J
A
C
K
)
S
1
4925
(Q
1205)
5V
o
r 12V
O
U
T
(T
o
R
S
232
J
A
C
K
)
On
/
O
ff
J
L
C
1
562
(I
C
1
03)
I2
C
Co
n
tro
l 4
b
it
RJ
4
5
(J
K
1
300)
: H
o
te
l Fu
n
c
ti
o
n
- 26 -
300
200
120
122
123
501
500
900
910
920
540
530
521
51
1
510
400
410
820
LV
1
560
EXPLODED VIEW
Click on the first or last page to see other 22LG300C (CHASSIS:LD85A) service manuals if exist.