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Model
39LN5400 39LN5404 39LN5406 39LN540V (CHASSIS:LD31B LD36B)
Pages
77
Size
7.81 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
39ln5400-39ln5404-39ln5406-39ln540v-chassis-ld31b-.pdf
Date
PREV: LG 39LN5400 / 39LN542Y (CHASSIS:LB36B) Service Manual

LG 39LN5400 / 39LN5404 / 39LN5406 / 39LN540V (CHASSIS:LD31B / LD36B) Service Manual ▷ View online

- 17 -
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
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[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
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3 
1G
b
IC
1201
H
5T
Q
1G
63
E
FR
-P
BC
 
D
D
R
3 
1G
b
IC
1202
H
5T
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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
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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)  
- 18 -
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)
- 19 -
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)
- 20 -
A2
A9
A10
900
200
400
540
521
530
500
301
910
120
300
510
123
122
Set + Stand
Stand Base
+
Stand Body
LV
1
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
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