LG 42LN5200 (CHASSIS:LA32B / LA32J) Service Manual ▷ View online
- 21 -
9. AV Audio
Check AV Cable for damage
for damage or open conductor
Check JK1702 Signal Line
R1714,R1715
ok
ok
No
Replace Jack
Follow procedure
‘7. All source audio’
trouble shooting guide.
10. Component Audio
Check Component Cable
for damage or open conductor.
Check JK1702 Signal Line
R1714,R1715
ok
ok
No
Replace Jack
Follow procedure
‘7. All source audio’
trouble shooting guide.
- 22 -
BLOCK DIAGRAM
SPD
IF
C
om
po
ne
nt
H
D
M
I
D
_I
F
M
1
SE
R
IA
L
FL
A
SH
M
XI
C
8
M
B
(6
4M
b)
M
X2
5L
64
06
EM
I
LV
D
S
(F
H
D
/H
D
6
0z
)
U
SB
2.
0
D
P
/D
M
SPK
L
/R
X-
ta
l
24
M
H
z
FP
C
(5
1P
/F
H
D
)
I2
S
S
P
D
IF
L/
R
Y/
P
b/
P
r,
L/
R
R
ea
r
TM
D
S
D
D
R
3
A
dd
.
D
D
R
3
D
at
a
S
P
I
A
V
Si
de
TM
D
S
H
D
M
I
M
H
L
C
V
BS
, L
/R
C
O
N
TR
O
L
IR
&
L
ED
K
E
Y1
IR
LE
D
_R
I2
C
R
S-
23
2C
FP
C
(3
0P
/H
D
)
M
A
X3
23
2
R
S
23
2C
C
LK
6
67
M
H
z
In
te
rn
al
M
ic
om
(P
M
)
I2
C
D
D
R
3
12
8M
B
(1
G
b)
H
yn
ic
H
5T
Q
1G
63
D
FR
A
T2
4C
51
2C
-S
SH
D
-T
51
2k
b
it
H
al
f N
IM
(S
I2
15
8_
AT
SC
_1
IN
PU
T)
A
_I
F
AM
P
ST
A3
80
B
W
E
(C
LK
8
00
M
H
z)
- 23 -
M
1
E
E
P
R
O
M
A
m
p
Tu
ne
r
C
H
2
I2
C
_S
C
L
I2
C
_S
D
A
22
3.
3V
2.
2k
1k
TU
_
SC
L
TU
_
SD
A
C
H
5
C
H
6
TU
_
SC
L
TU
_
SD
A
1.
8k
33
22
3.
3V
3.
3V
0x
A
0
0x
20
0x
C
0
0
18
p
- 24 -
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
A2
A3
1
LV
1
300
200
590
591
521
540
420
400
120
900
910
A9
A1
0
Set + Stand
Stand Base
+
Stand Body
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