LG 39LN549C (CHASSIS:LA3AA) Service Manual ▷ View online
- 21 -
Check RJP RJ45 Cable & HDMI cable
Check RJP Power 12V
L901, JK901 1pin
Replace L901, JK901 1pin
Check RJP Control Signal for input mode
R911, R909, R910, R912, R913
High level : above 3V
Replace R911, R909, R910, R912, R913
ok
ok
ok
No
No
Check RJ45 Jack(JK901)
Replace connector
if found to be damaged.
No
ok
Check RJP
Replace RJP.
No
10. RJP (only us model)
- 22 -
BLOCK DIAGRAM
R
GB
PC
PC
R
JP
H
D
M
I2
H
D
M
I1
H
AL
F
N
IM
(C
AN
)
R
S-2
32
C
Pa
ra
lle
l T
S
TU
_C
VBS
VBS
SI
F
S7
LR
2
M
AX32
32
32
SER
IA
L F
LA
SH
M
XI
C
(8M
B
B
IT
)
M
X2
5L
80
06EM
2I
-12
G
LVD
S
S
80
M
H
z
(60
H
H
z/12
0H
z/H
D
/F
H
D
)
A.
AM
P
N
TP75
00
00
U
SB
2.
2.
0
D
P/
D
M
SPK
L
/R
X
-t
a
l
2
4
M
H
z
51
P
I2S
R
JP
L/R
TM
D
S
R
GB/
H
H
/V
R
S232
C
R
ea
r
TM
D
S
D
D
R
2
Ad
d.
D
D
R
2
D
ata
SPI
AV
Si
de
N
AN
D
F
lash
(2GB
IT
)
H
Y27U
F08
2G2B
T
PC
B
B
PC
M
M
_A[
0:7
0:7
]
TM
D
S
H
D
M
I3
C
VBS,
L/
R
D
D
R
3
2G
Sa
msu
ng
K
4B
2G164
6C
-H
C
K
0
667M
H
H
z
A
T
2
4
C2
5
5
6
C
-S
S
H
L-
T
25
6K
B
IT
I2C
TI
A
M
P
E
xt
er
n
al
S
P
K
O
u
t
I2S
L/R
30
P
IR
ou
t-Pa
th
D
D
R
3
1G
H
yn
ix
H
5T
Q1
G63
EF
EF
R
-PB
C
C
667M
H
H
z
14
8.
5M
H
H
z
On
ly
ly
U
S
mo
del
del
SPD
IF
o
ut
- 23 -
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
A10
900
200
400
540
521
530
500
910
120
300
510
123
122
121
Set + Stand
LV
1
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