LG 42LN54XX / 42LN540S / 42LN540V / 42LN541V / 42LN542V (CHASSIS:LD31B / LD36B) Service Manual ▷ View online
- 16 -
LV
D
S
(F
H
D
/50H
z)
S
P
K
L/
R
FP
C
(5
1P
)
AU
D
_M
AS
TE
R
_C
LK
,
AU
D
_L
R
C
H
,
AU
D
_L
R
C
K,
A
U
D
_S
C
K
S
P
I
C
O
N
T
R
O
L
IR
&
L
E
D
/
(T
AC
T
S
W
IT
CH
)
LE
D
_R
K
E
Y1
K
E
Y2
IR
I2
C
S
E
R
IA
L
FL
AS
H
IC
13
00
(8
M
b
it)
M
X2
5L
80
05
M
2I
E
E
P
R
O
M
25
6K
bi
t
IC
10
4
R
1E
X2
42
5B
S
AS
0A
N
AN
D
F
LA
S
H
IC
10
2
(1
G
bi
t)
K9
F1
G
08
U
0D
-S
C
B0
P
C
M
_A
[0
:7
]
CI Slot
TC
74
LC
X2
44
FT
B
uf
fe
r
TS
_D
AT
A[
0:
7]
P
C
M
_D
AT
A[
0:
7]
FE
_T
S_
D
AT
A[
0:
7]
P
C
M
_A
[8
:1
4]
S
P
D
IF
Co
m
po
ne
nt
1
U
S
B
D
P
/D
M
SP
D
IF
C
VB
S
,
Y/
P
b/
P
r,
L/
R
R
ea
r
S
id
e
F-
S
C
A
R
T
SC
1_C
V
B
S_
IN
SC
1_
R
/G
/B
FE
_
V
O
U
T
TM
D
S
H
D
M
I1
TM
D
S
H
D
M
I2
W
ith
M
H
L
LA
N
EP
H
Y
H
/P
H
/P
L
/R
TD
SQ
-G
50
1D
(B
)
(L
G
IT
)
AI
F,
D
IF
S
IF
X
-t
al
24
M
LN
B
A
8303
SE
ST
R-T
(IC
2701)
LN
B
O
U
T
FE
_T
S
A
IR
/C
ab
le
Se
at
tle
ite
D
D
R
3
Ad
d.
D
D
R
3
D
at
a
D
D
R
3
1G
b
IC
1201
H
5T
Q
1G
63
E
FR
-P
BC
D
D
R
3
1G
b
IC
1202
H
5T
Q
1G
63
E
FR
-P
BC
Au
di
o
A
M
P
S
TA
38
0B
W
F
S7
LR
-M
(L
G
E
21
21
-M
S)
IC
10
1
O
nl
y f
or
3D
D
D
R
3
2G
b
IC
1201
H
5T
Q
2G
63
D
FR
-P
B
C
2D
M
od
el
- L
N
54
*S
, L
N
54
*R
L
N
54
*6
, L
N
54
*5
, L
A
61
*S
, L
A
61
*6
BLOCK DIAGRAM
1. [LD31B] DVB-T/C/S2(2D/3D)
- 17 -
TD
SQ
-G
60
1D
(B
)
(L
G
IT
)
AT
V_
Vi
de
o
(A
na
lo
g)
AT
V_
S
IF
(
An
al
og
)
LV
D
S
(F
H
D
/5
0H
z)
Au
di
o
A
M
P
S
TA
38
0B
W
F
S
P
K
L/
R
X
-t
al
24
M
FP
C
(5
1P
)
AU
D
_M
AS
TE
R
_C
LK
,
AU
D
_L
R
C
H
,
AU
D
_L
R
C
K,
A
U
D
_S
C
K
S
P
I
C
O
N
T
R
O
L
IR
&
L
E
D
/
(T
AC
T
S
W
IT
CH
)
LE
D
_R
K
E
Y1
K
E
Y2
IR
I2
C
LN
B
A
8303S
ES
TR
-T
(IC
2701
)
LN
B
O
U
T
FE
_T
S
A
IR
/C
ab
le
Se
at
tle
ite
S
E
R
IA
L
FL
AS
H
IC
13
00
(8
M
b
it)
M
X2
5L
80
05
M
2I
E
E
P
R
O
M
25
6K
bi
t
IC
10
4
R
1E
X2
42
5B
S
AS
0A
N
AN
D
F
LA
S
H
IC
10
2
(1
G
bi
t)
K9
F1
G
08
U
0D
-S
C
B0
P
C
M
_A
[0
:7
]
CI Slot
TC
74
LC
X2
44
FT
B
uf
fe
r
TS
_D
AT
A[
0:
7]
P
C
M
_D
AT
A[
0:
7]
FE
_T
S_
D
AT
A[
0:
7]
P
C
M
_A
[8
:1
4]
S
P
D
IF
Co
m
po
ne
nt
1
U
S
B
D
P
/D
M
SP
D
IF
C
VB
S
,
Y/
P
b/
P
r,
L/
R
R
ea
r
S
id
e
F-
S
C
A
R
T
SC
1_
C
V
B
S_I
N
SC
1_
R
/G
/B
FE
_
V
O
U
T
TM
D
S
H
D
M
I1
TM
D
S
H
D
M
I2
W
ith
M
H
L
LA
N
EP
H
Y
H
/P
H
/P
L
/R
D
D
R
3
Ad
d.
D
D
R
3
D
at
a
D
D
R
3
1G
b
IC
120
1
H
5T
Q
1G
63
E
FR
-P
BC
D
D
R
3
1G
b
IC
1202
H
5T
Q
1G
63
E
FR
-P
BC
S7
LR
-M
(L
G
E
21
21
-M
S)
IC
10
1
O
nl
y f
or
3D
D
D
R
3
2G
b
IC
1201
H
5T
Q
2G
63
D
FR
-P
B
C
2D
M
od
el
- L
N
54
*V
, L
N
54
*U
, L
A
61
*V
2. [LD31B] DVB-T2/C/S2(2D_3D)
- 18 -
S
P
D
IF
Co
m
po
ne
nt
1
TD
SS
-
G
50
1D
(B
)
(L
G
IT
)
AI
F,
D
IF
S
IF
S7
LR
-M
(L
G
E
21
21
-M
S)
IC
10
1
U
S
B
D
P
/D
M
S
P
K
L/
R
X
-t
al
24
M
AU
D
_M
AS
TE
R
_C
LK
,
AU
D
_L
R
C
H
,
AU
D
_L
R
C
K,
A
U
D
_S
C
K
SP
D
IF
C
VB
S
,
Y/
P
b/
P
r,
L/
R
R
ea
r
S
id
e
N
AN
D
F
LA
S
H
IC
10
2
(1
G
bi
t)
K9
F1
G
08
U
0D
-S
C
B0
P
C
M
_A
[0
:7
]
TM
D
S
H
D
M
I2
W
ith
M
H
L
C
O
N
T
R
O
L
IR
&
L
E
D
/
(T
AC
T
S
W
IT
CH
)
LE
D
_R
KE
Y1
KE
Y2
IR
F-
S
C
A
R
T
SC
1_C
V
B
S_
IN
SC
1_R
/G
/B
FE
_
V
O
U
T
CI Slot
TC
74
LC
X2
44
FT
B
uf
fe
r
TS
_D
AT
A[
0:
7]
P
C
M
_D
AT
A[
0:
7]
FE
_T
S_
D
AT
A[
0:
7]
P
C
M
_A
[8
:1
4]
TM
D
S
H
D
M
I1
A
IR
/C
ab
le
Au
di
o
A
M
P
S
TA
38
0B
W
F
LV
D
S
(F
H
D
/H
D
/50
H
z)
FP
C
(5
1P
/3
0P
)
D
D
R
3
Ad
d.
D
D
R
3
D
at
a
S
P
I
I2
C
S
E
R
IA
L
FL
AS
H
IC
13
00
(8
M
b
it)
M
X2
5L
80
05
M
2I
D
D
R
3
2G
b
IC
1201
H
5T
Q
2G
63
D
FR
-P
B
C
E
E
P
R
O
M
25
6K
bi
t
IC
10
4
R
1E
X2
42
5B
S
AS
0A
- L
N
54
*0
, L
N
54
*4
, L
N
54
*B
, L
N
54
*3
3. [LD36B] DVB-T/C(2D)
- 19 -
900
200
400
540
521
530
301
500
910
120
300
510
123
122
LV
1
A2
A9
A10
Set + Stand
Stand Base
+
Stand Body
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.
IMPORTANT SAFETY NOTICE
Click on the first or last page to see other 42LN54XX / 42LN540S / 42LN540V / 42LN541V / 42LN542V (CHASSIS:LD31B / LD36B) service manuals if exist.