LG 42LB4D, Training Manual

Page: 31 / 44

Directview LCD Training
31
Troubleshooting
VidEO
TrOUBLeShOOTiNG
Fr
eq
ue
nc
y
: D
iff
er
en
t
ac
co
rd
in
g
to
fo
rm
at
4
:
_C
he
ck
M
ST
3
3
6
1
(I
C
4
0
2
)
O
ut
pu
ts
Fr
eq
ue
nc
y
: D
iff
er
en
t
ac
co
rd
in
g
to
fo
rm
at
1
:
_C
he
ck
H
D
C
P
Er
ro
r
_R
et
ry
p
ow
er
o
ff
a
nd
o
n
(T
V
or
S
T
B
/D
VD)
_C
he
ck
M
ST
3
3
6
1
(I
C
4
0
2
)
H
D
C
P
IIC
li
ne
(
#
6
9
,#
7
0
)
2
:
_C
he
ck
E
D
ID
D
ow
nl
oa
d
(R
X
0
C
-,
R
X
0
C
+
)
:
SC
L
:
SD
A
:
3
:
_
M
ST
3
3
6
1
(I
C
4
0
2
)
in
pu
ts
(R
X
1
C
-,
R
X
1
C
+
)
:
(V
sy
nc
)
:
(D
E)
:
(C
lk
)
:
(H
sy
nc
)
5
9
.9
4
H
z
(D
at
a)
:
5
:
_C
he
ck
X
2
6
0
(
IC
1
0
1
)
In
pu
ts
Sn
ow
n
oi
se
(
W
hi
te
d
ot
)
?
Po
w
er
o
ff
a
nd
o
n
(T
V
or
S
T
B
/D
VD)
Vi
de
o
is
n
or
m
al
&
N
o
So
un
d
?
C
he
ck
H
D
C
P
Po
w
er
Pi
n(
IC
4
0
4
),
M
ST
3
3
6
1
(I
C
4
0
2
)
IIC
(#
6
9
,#
7
0
)
C
he
ck
M
ST
3
3
6
1
(I
C
4
0
2
)
in
pu
ts
Po
w
er
, O
sc
#
2
5
,#
2
6
(R
X
1
C-
,R
X
1
C
+
),
#
1
4
,#
1
5
(R
X
0
C-
,R
X
0
C
+
)
R
e-
d
ow
nl
oa
d
ED
ID
(I
C
4
0
6
/4
0
7
/4
0
8
)
C
he
ck
M
ST
3
3
6
1
(I
C
4
0
2
)
O
ut
pu
ts
V-
ou
t
(#
9
9
),
H-
ou
t
(#
9
8
),
C
lo
ck
(
#
9
6
),
D
at
a
1 2
3 4
N
Y
N
Y
Y
C
he
ck
X
2
6
0
(
IC
1
0
1
)
In
pu
ts
M
ST
3
3
6
1
_H
S(
#
T
6
)
,
M
ST
3
3
6
1
_V
S(
#
T
5
)
, C
lo
ck
(
#
P3
)
,
D
at
a
(3
0
B
it
)
, D
E(
#
U
6
)
5
Y
Si
gn
al
s
ha
pe
is
s
am
e as above
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