LG 32LQ630H (CHASSIS:LA1EY) Service Manual ▷ View online
- 21 -
10. HDMI Audio in Trouble Shooting guide
Check input signal format.
Is it supported?
Y
Check AC cable for damage
For damage or open conductor
Y
Check JK801, JK802
Can you see the normal waveform?
Y
This board has big problem because Main chip (Mstar) have some troubles.
After checking thoroughly all path once again, You should decide to replace Mstar or not.
Replace JK801, JK802
N
Check Audio AMP output
L503,L504,L505,L506
Replace L503,L504,L505,L506
N
Y
- 22 -
BLOCK DIAGRAM
1. Overall Block Diagram(MAIN)
D
D
R
2
(2
G
b
it)
H
5T
Q
1G
63
BF
R
-H
9C
IC
12
01
N
AN
D
F
la
sh
(2
G
b
it)
H
Y2
7U
F0
82
G
2B
-T
PC
B
IC
10
2
D
ig
ita
l AM
P
N
TP7
40
0
IC
50
1
I2
S
A
_D
at
a[
0:
15
],
D
D
R
2
(2
G
b
it)
H
5T
Q
1G
63
BF
R
-H
9C
IC
12
02
B
_D
at
a[
0:
15
],
A
dd
r.[
],
c
trl
, D
Q
S
, D
M
…
P
C
M
_A
[0
…
7]
IF
N
/P
S
IF
TU
_C
VB
S
X-
ta
l
R
ese
t /
IF
_A
G
C
…
S
D
A
/S
C
L_
5V
R
es
et
S
w
itc
h
C
S
,R
E
,W
E
……
R
X/
TX
M
ic
om
(M
SP4
30
F5
41
9I
PZ
R
)
IC
16
02
24
M
H
z
JA
C
K
P
A
C
K
JA
C
K
P
A
C
K
at
R
EA
R
at
R
EA
R
S
C
L,
S
D
A
_3
.3
V
R
F
S7
LR
(L
G
E2
11
1-
TE
)
IC
10
1
C
PU
Se
rv
ic
e
(SVC
)
S
/W
R
es
et
TD
VJ
-H
03
1F
E
XT
_O
U
T
I2
C
(S
C
L/
S
D
A
)
S_
FL
ASH
(8
M
b
it)
M
X2
5L
80
05
M
2I
-1
5G
IC
20
0
Po
w
er
A
M
P
TPA6
01
1A4
PW
PR
G
4
IC
11
00
JK
11
00
JK
50
1
Pro
:Id
om
LG
D
T1
10
1
IC
12
09
TS
_C
LK
,V
A
LI
D
,S
YN
C
,0
~7
P
M
_T
S
_C
LK
,V
A
LI
D
,S
YN
C
,0
~7
TM
M
B
-
H
00
2F
TV
-li
nk
C
FG
G
am
e
co
nt
ro
l
TV
-li
nk
C
FG
G
am
e
co
nt
ro
l
A
ud
io
L
/R
PC
A
ud
io
P
11
03
JK
11
02
A
ud
io
L
/R
PC
A
ud
io
P
11
03
JK
11
02
H
D
M
I 1
H
D
M
I 2
H
D
M
I 1
H
D
M
I 2
R
G
B
PC
A
V
U
SB
R
G
B
/H
/V
C
V
BS
, L
/R
D
P
/D
M
/ +
5V
JA
C
K
P
A
C
K
JA
C
K
P
A
C
K
at
Si
de
at
Si
de
U
ni
ve
rs
al
P
ill
ow
S
P
I/M
P
I
PT
C
Se
rv
ic
e
(SVC
)
Sp
ea
ke
r o
ut
Po
w
er
A
M
P
TPA3
12
4D
2P
W
PR
IC
27
00
P
illo
w
IR
JK
15
00
- 23 -
2. Power Block Diagram : Modification b-LAN power
IR
B
o
a
rd
3
.5
V
B
+
3
.5
V
_S
T
+
5
V
_N
o
rm
a
l
D
D
R
IC
1
2
0
1
~
2
U
A
R
T
S
/W
MC
1
4
0
5
3
B
IC
1
0
0
0
IC
1
0
0
1
+
3
.5
V
_S
T
P
T
C
Mi
c
o
m
MS
P
4
3
0
F
IC
1
6
0
2
B
C
h
a
rg
e
p
u
m
p
S
C
6
3
2
IC
1
6
0
0
B
1
2
V
B
M
IU
0
V
D
D
C
B
M
IU
1
V
D
D
C
S
7
L
R
L
G
E
2
1
1
2
IC
1
0
1
+
1
.1
0
V
_V
D
D
C
B
B
A
V
D
D
_M
IU
1
.5
V
_D
D
R
1
.5
V
_D
D
R
B
F
R
A
M
IC
1
6
0
8
+
5
V
_S
T
1
2
V
B
+
1
2
V
/+
1
5
V
D
C
/D
C
A
O
Z
1
0
5
1
P
I
IC
4
0
5
+
3
.3
V
_N
o
rm
a
l
B
P
O
W
E
R
_O
N
/O
F
F
1
B
D
C
/D
C
A
O
Z
1
0
5
1
P
I
IC
4
0
6
B
+
1
2
V
/+
1
5
V
+
5
V
_U
S
B
+
1
2
V
/+
1
5
V
N
C
P
8
0
3
S
N
IC
4
0
8
2
4
V
B
+
2
4
V
N
P
T7
4
0
0
IC
5
0
1
+
2
4
V
R
eg
u
la
to
r
A
Z
2
9
4
0
IC
4
0
2
B
E
x
te
rn
a
l A
MP
T
P
A
6
0
1
1
IC
1
1
0
0
S
e
ri
a
l F
la
s
h
IC
2
0
0
+
3
.3
V
_N
o
rm
a
l
+
3
.3
V
_N
o
rm
a
l
B
L
C
D
P
A
N
E
L
U
S
B
D
C
/D
C
A
O
Z
1
0
5
1
P
I
IC
4
0
1
B
+
1
2
V
F
E
T
A
O
3
4
0
7
A
Q
4
0
9
P
A
N
E
L
_V
C
C
B
P
A
N
E
L
_C
T
L
B
E
E
P
R
O
M
IC
1
0
3
~
4
N
A
N
D
F
la
s
h
IC
1
0
2
V
D
D
3
3
_D
V
I
V
D
D
3
3
A
U
3
3
A
V
D
D
_D
M
P
L
L
B
B
B
B
B
B
B
A
U
2
5
A
V
D
D
2
P
5
A
V
D
D
2
5
_P
G
A
E
E
P
R
O
M
IC
8
0
1
,2
IC
1
1
0
5
B
B
-
L
A
N
T
MMB
-
H
0
0
2
F
T
U
1
0
0
3
+
5
V
_B
L
A
N
_T
U
B
R
eg
u
la
to
r
A
Z
1
1
1
7
IC
3
7
0
3
+
1
.2
V
/+
1
.8
V
_T
U
H
A
L
F
_N
IM
+
3
.3
V
_T
U
B
C
u
rr
en
t/
L
im
A
P
2
1
9
1
IC
1
4
5
0
B
2
6”
P
S
U
3
.5
V
3
.0
A
1
2
V
3
.1
A
2
4
V
4
.0
A
2
6”
P
S
U
3
.5
V
3
.0
A
1
2
V
3
.1
A
2
4
V
4
.0
A
1.
07
4A
G
a
m
e
c
o
n
tro
l
B
-
la
n
B
0.
2A
0.
2A
+
1
2
_C
P
ill
o
w
s
p
e
a
k
e
r
F
ro
n
t
U
S
B
C
u
rr
en
t/
L
im
A
P
2
1
9
1
IC
2
4
0
3
B
B
M
o
d
u
le
in
v
er
ter
+
2
4
V
_L
E
D
_d
ri
ve
r
P
O
W
E
R
_D
E
T
P
ill
o
w
A
M
P
TP
A
3
1
2
4
IC
2
7
0
0
P
M
m
ic
o
m
B
A
V
D
D
_N
O
D
IE
3
.5
V
_S
T
_P
T
C
M
C
1
4
0
5
IC
1
7
8
5
TX
S
0
1
0
4
IC
1
6
0
6
+
5
V
_S
T
_b
L
A
N
F
E
T
Q
1
5
0
5
B
P
ro
id
io
m
IC
1
2
0
9
B
R
eg
u
la
to
r
A
Z
1
1
1
7
IC
1
2
4
0
X
M
A
R
K
_1
.8
V
(1
A
)
(1
.8
A
)
1
A
0
.2
A
0
.5
A
0
.5
A
0
.2
A
M
A
X
3
.0
A
1
A
0
.6
A
B
0
.5
A
S
ta
n
d
-
b
y
&
p
o
w
e
r
o
n
모두
공급
D
C
/D
C
M
P
8
6
7
0
IC
7
5
0
2
1
2
V
_C
O
N
T
R
O
L
D
C
/D
C
M
P
8
4
4
6
0
IC
7
5
0
3
3
.5
V
- 24 -
LV
1
80
0
53
0
54
0
52
1
40
0
30
0
20
0
51
1
12
0
58
0
!
!
!
!
!
!
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
Click on the first or last page to see other 32LQ630H (CHASSIS:LA1EY) service manuals if exist.