LG 42LG30 (CHASSIS:LA85D) Service Manual ▷ View online
- 25 -
IC502
(Audio Path)
Com
p1
(DVD/DTV)
Com
p2
(DVD/DTV)
Com
p1
AV
1
AV
2
S-AV
1
AV_1
AV_2
MSTAR
RG
B
(PC/DTV)
RG
B
HDMI 1
HDMI 2
Com
p2
SIF
(From T
un
er)
N
T
P3000
(Digital
Amp)
IIS
MNT_R/
L
HDMI 1(TMDS)
TMDS
Sw
it
ch
TMDS
Sw
it
ch
IC802
HDMI 2(TMDS)
HDMI 3(TMDS)
TMDS
HDMI 3
Audi
o
Sw
itch
IC901
Com
p
IF_P/N
IC400
LG
D
T
3304
LG
D
T
3304
(From T
un
er)
IC501
IC100
TP
(M
PEG Transport stream)
- 26 -
Power flow diagram
T
U
401
LGIT
TUNER
Regu
la
tor
IC
16V_
A
U
DIO
IC
711
A
S
7809
+5V
_TUNER
12V
Q706
S
I3865
B
D
V
+5V
_G
ENER
A
L
+
5V_
ST
IC
702
A
Z
1117H
-3
.3V
+3.
3V
_MULTI
IC
709
S
C
156515
M
+3.
3V
_
P
V
S
B
IC
708
S
C
4215IS
+1.
2V
_
P
V
S
B
IC
800,
I
C
801
,
IC
902
EE
PRO
M
IC
803
T
M
D
S
351P
A
G
IC
901
COMP
A
U
D
IO
SWITCH
IC
600
CA
T
2
4C
0
2W
I
IC
102
A
T
24C512
B
W
IC
501
N
T
P3000
A
IC
500
A
Z
1117H
-
1.8
V
+1.
8V
_NTP
1
2
17
5
6
19
20
9
4
8
12
16
V
12
V
5V
ST
AC_DE
T
VAVS
_O
N
M5V_ON
GND
5V
_MNT
RL_ON
18
21
3
7
14
16
13
15
$0.3
$0.1
$1.36
$4.5
$0.05
$0.13
$
IC
400
L
G
DT3304
+3
.3
V
_
DV
D
D
+
3
.3V_AVDD
+1
.2
V
_
DV
D
D
$2.55
$0.2
$0.05
9V
IC
710
K
IA
78R05
F
$0.3
IC
802
H
D
M
I R
ece
iv
er
- 27 -
Mstar
TUNER
TDVF-H051F
Audio AMP
NTP3000A
I2C Design
Demodulator
LGDT3304
I/O exp.
M62320
- 28 -
EXPLODED VIEW
801
803
805
806
804
802
550
830
540
821
400
521
530
300
120
122
510
500
901
900
121
200
200T
200N
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.
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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