Read LG 20HIZ2 (CHASSIS:LP69F) Service Manual online
- 17 -
BLOCK DIAGRAM
IR
d
e
te
ct
or
5V
M
X
25L
400
5A
(S
e
ri
al
F
lash
)
Co
n
tr
o
l B
o
a
rd
(T
a
c
t S
w
it
c
h
)
LE
D
S
p
eaker L
e
ft
S
p
eaker R
ight
TTL M
O
D
U
L
E
15V
5V
15V
12V
_
P
a
ne
l
5V
5V
15V
LIP
S
RGB i
n
A udi
o out
A udi
o in
CVBS
in
Vide
o in
A udi
o in
Y in
C in
CVBS
ou
t
C
ont
ro
l i
n
/out
EE
P
R
O
M
(24C
64)
CV
BS
Jack
S
-V
ide
o
Jack
Speaker
Output
RS232C
L
E
D
/ IR
/ C
o
n
tr
o
l
Po
w
e
r
Vi
de
o
A
udi
o
Da
ta
A
ddr
e
ss
Da
ta
CL
K,
DQ
M
,
WE
Z
,C
A
S
Z
,R
A
S
Z
MX232A
TPA6011A
(Audio amp)
(RS232C)
M
1
2L
1
616
1A
-5
T
G
(S
D
RAM
)
C
V
B
S
Tune
r
C
V
B
S
Tune
r
SC
L
/SD
A
SC
L
/SD
A
Rx/Tx
Rx/Tx
12C(SDA/SCL)
8 ohm/1W
/Mono
BTL output
SI
F
_
O
U
T
CV
BS
O
U
T
LGE9689AD-LF-1
(S
c
a
le
r +
V
ideo D
e
c
oder
+Audio Processor)
SC
A
R
T
Jack
D
-Su
b
(Service)
C
S
4352
(D
A
C
)
3.
3V
12V
Re
gula
to
r
Re
gula
to
r
Re
gula
to
r
Re
gula
to
r
Re
gula
to
r
5V
1.
8V
LE
D
/IR
B
oar
d
Co
nt
ro
l
ON
/O
F
F
PWM
_
D
IM
DI
M
_
C
T
L
YD
A
1
3
8
(A
udi
o a
m
p)
Clock Board
F
E
T
Swi
tch
(SI
4925B
D
Y
)
5V
12V
CVBS_
V
id
e
o
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