LG 26LG300C (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
510
500
120
122
400
401
800
801
802
804
803
530
540
521
821
805
550
910
904
902
901
905
903
900
830
822
EXPLODED VIEW
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These
parts are identified by in the Schematic Diagram and EXPLODED VIEW.
It is essential that these special safety parts should be replaced with the same components as
recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
parts are identified by in the Schematic Diagram and EXPLODED VIEW.
It is essential that these special safety parts should be replaced with the same components as
recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
IMPORTANT SAFETY NOTICE
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