LG 55LM4600 (CHASSIS:LJ21C) Service Manual ▷ View online
- 21 -
No Raster on COMPONENT Signal
Check Input source
Cable And Jack
Pass
Re-soldering or
Change the defect part
Pass
Check the Input/Output
Of IC101
Fail
Re-soldering or
Change the defect part
Repeat [A], & [B] Process
Check The Input/Output
Of JK1601, JK1602
Fail
Pass
No Raster on HDMI Signal
Check Input source
Cable And Jack
Pass
Check the Input/Output
Of JK801, JK802, JK803
Fail
Re-soldering or
Change the defect part
Pass
Pass
Check the Input/Output
Of IC103
Fail
Re-soldering or
Change the defect part.
Re-download HDCP
Pass
Pass
Check the Input/Output
Of IC101
Fail
Re-soldering or
Change the defect part
Repeat [A], & [B] Process
Pass
Check the Instart Menu
EDID D/L Status
Fail
Re-download EDID Data]
(Adjust Menu EDID D/L)
Pass
- 22 -
No Raster On AV Video Signal
No Signal On TV(RF) Signal
Check Input source
Cable And Jack
Pass
Check Input source
Cable And Jack
Pass
Check The Input/Output
Of JK1601
Pass
Re-soldering or
Change the defect part
Pass
Fail
Pass
Repeat [A], & [B] Process
Check the Input/Output
Of IC101
Fail
Re-soldering or
Change the defect part
Pass
Check The Input/Output
Of TU3703
Pass
Re-soldering or
Change the defect part
Pass
Fail
Check the Input/Output
Of IC101
Fail
Re-soldering or
Change the defect part
Repeat [A], & [B] Process
- 23 -
No Sound
Check The Input Sourse
Check The Input/Output
Of IC501
Re-soldering or
Change the defect part
Fail
Pass
Pass
Check The Speaker
Change Speaker
Fail
Check The Speaker Wire
Pass
Change The Source Input
Fail
- 24 -
BLOCK DIAGRAM
Et
he
rne
t
R
G
B
P
C
S
P
D
IF
Co
m
po
ne
nt
2
H
D
MI
1
/2
(D
V
I)
TD
S
N
TD
S
N
-
-
B
0
0
1
F
B
0
0
1
F
P
C/
D
V
I A
ud
i I
n
IF
+
/-
TU
_C
VB
S
SI
F
L/
R
LG
E2
11
2-
T8
IC
1
0
1
LG
E2
11
2-
T8
IC
1
0
1
S
ER
IA
L F
LA
S
H
IC
1
4
0
1
(
8
M
b
it
)
M
X
2
5
L8
0
0
5
M
2
I
LV
D
S
(F
H
D
/5
0
H
z)
A
ud
io
A
MP
N
TP
7
5
0
0
U
S
B
1
D
P/
D
M
S
P
K
L
/R
X
-t
al
2
4
M
FP
C
(5
1
P
)
I2
S
SP
D
IF
RG
B,
H
/V
SY
N
C
R
ea
r
D
D
C/
D
[0
:2
]/
C
K/
H
PD
D
D
R3
A
dd
.
D
D
R3
D
at
a
SP
I
Si
de
N
A
N
D
F
LA
S
H
IC
1
0
2
(
1
G
b
it
)
TM
D
S
H
D
MI
3
D
D
R
3
1
G
b
IC
1
2
0
2
H
5
TQ
1
G
6
3D
FR
D
D
R
3
1
G
b
IC
1
2
0
1
H
5
TQ
1
G
6
3D
FR
C
O
N
TR
O
L
IR
&
L
ED
/
S
O
FT
T
O
U
C
H
(T
A
C
T
S
W
IT
C
H
)
S
E
N
S
O
R
_S
C
L
/S
D
A
L
E
D
_R
K
E
Y
1
K
E
Y
2
IR
S
O
F
T
T
O
U
C
H
_S
C
L
/S
D
A
EEPR
O
M
A
T2
4C
25
6C
-S
SH
L-
T
IC
1
0
4
25
6
K
bi
t
I2
C
EP
H
Y
Co
m
po
ne
nt
1
&
A
V
Y/
Pb
/P
r,
L
/R
CV
BS
,
Y/
Pb
/P
r,
L
/R
TU
_S
W
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