LG 32LS3400 / 32LS340Y (CHASSIS:LB21C) Service Manual ▷ View online
- 21 -
10. AV Audio
Check AV Cable for damage
for damage or open conductor
Check JK1601 & Signal Line
R1632, R1633
ok
ok
No
Replace Jack
Follow procedure
‘8. All source audio’
trouble shooting guide.
11. Component Audio
Check Component Cable
for damage or open conductor.
Check JK1602 & Signal Line
R1632, R1633
ok
ok
No
Replace Jack
Follow procedure
‘8. All source audio’
trouble shooting guide.
- 22 -
Main SO
C
S7
LR
(L
G
E2
11
1A
)
(IC
10
1)
SIDE
U
SB
(J
K
14
50
)
(P
70
5)
30P
H
D L
VD
S w
afe
r
51P
F
HD
LV
DS
waf
er
(P
70
3)
SI
D
E_
U
SB
_D
M
/D
P
U
SB
1_
O
C
D
/C
TL
O
C
P
IC
:
AP
21
91
D
SG
(IC
14
50
)
+5
V_
U
SB
1
Sy
st
em
E
EP
R
O
M
(2
56
K
bi
t)
IC
10
4
N
AN
D
F
LA
SH
(1Gbit
)
IC
10
2
D
D
R
3
SD
R
AM
(1Gbit
)
IC
12
01
, I
C
12
02
Serial Flas
h
(8
M
bi
t)
IC
14
01
SP
I_
SC
K
/S
D
I/S
D
O
/C
S
I2
C
_S
C
L/
SD
A
PC
M
_A
[0
-7
],…
A
-M
D
Q
L[
0-
7]
, A
-M
D
Q
U
[0
-7
],…
B
-M
D
Q
L[
0-
7]
, B
-M
D
Q
U
[0
-7
],…
R
XA
0+
/-~
R
XA
4+
/-,
R
XA
C
K
+/
-
RXB0+/-~RXB4
+/
-,
R
XB
C
K
+/
-
SP
K
_R
SP
K
_L
10
P
co
nn
ec
to
r
P2
40
1
SE
N
SO
R
_S
C
L/
SD
A
,
K
EY
1/
2,
L
ED
_B
, I
R
A
M
P_
SC
L/
SD
A
A
U
D
_M
A
ST
ER
_C
LK
,
A
U
D
_L
R
C
H
,
A
U
D
_L
R
C
K
, A
U
D
_S
C
K
Tu
ne
r
(T
U
37
04
)
C
om
po
ne
nt
&
A
V
(J
K
16
02
)
RE
A
R
H
D
M
I
(J
K
80
2)
TU
_S
C
L
/ S
D
A
IF
_P
/N
_M
ST
A
R
, T
U
_C
VB
S,
T
U
_S
IF
C
O
M
P2
_L
/R
_I
N
C
O
M
P2
_Y
+/
Pb
+/
Pr
+,
A
V_
C
VB
S_
IN
C
K
+/
-, D0
+/
-,
D
1+
/-,
D
2+
/-,
D
3+
/-_
H
D
M
I1
D
D
C
_S
C
L/
SD
A
_1
N
TP
-7
50
0L
(IC
50
1)
BLOCK DIAGRAM
- 23 -
LV
1
300
200
800
540
521
530
820
550
810
120
510
310
400
900
910
A2
A21
A4
A5
A10
* Set + Stand * Stand Base + Body
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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