LG 22LG30R (CHASSIS:LP81K) Service Manual ▷ View online
6. No Raster on AV(Scart in
Video, S-Video) Signal
7. No Raster on TV(RF) Signal
- 17 -
5. No Raster on HDMI Signal
Repeat [A, B]
process.
Pass
Check the input/
output of IC100.
Fail
Re-soldering or change the defect part.
Check the X100.
Check the X100.
Pass
Check input source cable and jack.
Check input source cable and jack.
Repeat [A, B]
process.
Fail
Check the output
of TU600.
Pass
Pass
Fail
Check 5V of TU600.
Re-Soldering or change
the defect part.
Re-Soldering or change
the defect part.
Check
the input/output
of R193, R925,
R926.
Fail
Change R193,
R925, R926.
R925, R926.
Pass
Check input/output
of IC100.
Pass
Fail
Re-soldering of Change defect part.
Check the X100.
Check the X100.
Pass
Pass
- 18 -
8. No sound
Check the input
Source.
Fail
Pass
Change the source input.
Check input/Output
of IC100.
Fail
Pass
Re-soldering of Change the defect part.
Check the X100
Check the X100
Check the input/
output of IC500
Fail
Re-soldering or Change
the defect part.
the defect part.
Pass
Check the Speaker
Pass
Check the Speaker wire.
Fail
Change Speaker.
- 19 -
L
V
DS
M
O
DU
L
E
TT
L
M
O
D
U
L
E
M
X
25L
1605A
M
2
C
(S
er
ia
l F
la
s
h)
Co
n
tr
o
l B
o
a
rd
(T
a
c
t
S
w
it
c
h
)
LE
D
Sp
e
a
k
e
r L
e
ft
Sp
e
a
k
e
r R
ig
h
t
S
t 15V
St 5
V
S
t 15V
12V
St 5
V
S
t 3.
3V
/
S
t 1.
2V
LI
P
S
Co
n
tro
l i
n
/
o
u
t
EEP
R
O
M
(2
4C
02)
EE
P
R
O
M
(2
4C
64)
CV
B
S
Ja
c
k
S-
V
id
e
o
Ja
c
k
St
e
re
o
-I
n
H/
P
Ou
tp
u
t
LED
/I
R/
Con
tro
l
Po
w
e
r
Vi
d
e
o
Au
d
io
Dat
a
HD
M
I
Ad
d
re
s
s
Da
ta
CLK
,D
Q
M
,
W
E
Z
,C
A
S
Z
,R
ASZ
EEP
R
O
M
(2
4C
02)
HY
5D
U
2
8162
2E
T
P
(D
D
R
S
D
R
A
M
128M
)
TV
Tu
n
e
r
(
T
A
F
T
-Z
7
03D
)
TV
Tu
n
e
r
(
T
A
F
T
-Z
7
03D
)
SC
L
/
S
D
A
L
G
E
6
991D
D
(S
c
a
le
r
+
V
ide
o
D
e
c
ode
r)
CO
M
P
ON
E
N
T
Ja
c
k
D-
S
u
b
Rx
/T
x
C
S
435
2
(D
A
C
)
5V
DC
-D
C
DC
-D
C
FE
T
St 5
V
LE
D
/
IR
B
o
a
rd
Co
n
tro
l
S
T
3
232C
D
R
(R
S
-232C
)
PW
M
_
D
IM
DI
M
_
CT
L
Y
D
A
138
(A
u
d
io
a
m
p
)
Rx
/T
x
SC
A
R
T
J
a
c
k
(O
p
ti
o
n
)
CV
BS
ou
t
Au
dio
ou
t
Au
dio
in
CV
BS
in
RG
Bi
n
Com
po
ne
nt
Y,P
b,P
r
Aud
io
In
L,R
Vide
oi
n
Aud
io
in
SCL
/S
DA
SC
L
/
SD
A
SC
L
/
SD
A
SI
F
_
O
U
T
CV
B
S
OU
T
Yi
n
Ci
n
5V
R
S
-232
C
R,G
,B
,T
XC
LK
R,G,B
,H
,V
PCAu
dio
In
Re
g
u
la
to
r
5V
IR
de
te
c
tor
Re
g
u
la
to
r
5V
2.
5
V
Op
ti
o
n
BLOCK DIAGRAM
- 20 -
300
200
120
122
123
501
500
900
910
920
540
530
51
1
510
400
410
820
LV
1
EXPLODED VIEW
Click on the first or last page to see other 22LG30R (CHASSIS:LP81K) service manuals if exist.