Read LG 42LN549C / 42LN549E (CHASSIS:LJ3AC) Service Manual online
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
1K
RGB_PC
R732
10K
R707
100
R711
DSUB_DET
JP708
0.1uF
C706
100
R710
68pF
50V
OPT
C718
5.6V
D702
AV_CVBS_IN
ADMC 5M 02 200L
5.6V
OPT
VA708
AV_CVBS_DET
AV_COMP_PC_R_IN
68pF
50V
OPT
C720
0.1uF
16V
C711
+3.3V_Normal
12K
R709
5.6V
OPT
VA707
PM_TXD
MMBD6100
RGB_PC
D710
A2
C
A1
1K
R712
5.6V
OPT
D705
AV_COMP_PC_L_IN
+3.3V_Normal
+3.3V_Normal
JP709
+3.5V_ST
470K
R702
0.1uF
C703
0.33uF
C701
470K
R703
DSUB_HSYNC
0.1uF
16V
NON_CI_CAP_RGB_PC
C724
1K
R705
DSUB_B+
DSUB_VSYNC
ADUC 20S 02 010L
20V
OPT
VA705
DSUB_G+
PM_RXD
PPJ233-01
JK701
4A
[YL]O-SPRING
5A
[YL]E-LUG
3A
[YL]CONTACT
4B
[WH]C-LUG
5C
[RD]E-LUG
4C
[RD]O-SPRING
3C
[RD]CONTACT
100pF
50V
C709
ADUC 20S 02 010L
20V
RGB_VARISTOR
VA703
0.1uF
C705
18pF
50V
NON_CI_CAP_RGB_PC
C721
0.1uF
C702
ADUC 20S 02 010L
20V
RGB_VARISTOR
VA702
2.2K
RGB_PC
R723
ADUC 20S 02 010L
20V
RGB_VARISTOR
VA704
RGB_DDC_SDA
120-ohm
L701
CDS3C30GTH
30V
OPT
OPT
D704
10K
R704
ADUC 20S 02 010L
20V
OPT
VA701
RGB_DDC_SCL
12
K
R
70
8
75
RGB_PC
R718
75
RGB_PC
R719
10K
RGB_PC
R729
220pF
50V
OPT
C710
5.6V
OPT
VA706
75
RGB_PC
R720
2.2K
RGB_PC
R724
330pF
50V
C713
0.1uF
16V
C707
BAP70-02
50V
D707
+3.5V_ST
+5V_Normal
EAN41348201
MAX3232CDR
IC701
3
C1-
2
V+
4
C2+
1
C1+
6
V-
5
C2-
7
DOUT2
8
RIN2
9
ROUT2
10
DIN2
11
DIN1
12
ROUT1
13
RIN1
14
DOUT1
15
GND
16
VCC
SPG09-DB-009
JK706
1
2
3
4
5
6
7
8
9
10
0.1uF
C704
330pF
50V
C712
120-ohm
L702
IR_OUT
5.6V
D703
F
ib
e
r
O
p
ti
c
JST1223-001
SPDIF-JACK-SOLTEAM
JK702-*1
1
GND
2
VCC
3
VINPUT
4
F
IX
_P
O
L
E
CDS3C30GTH
30V
OPT
D706
10K
R706
DSUB_R+
ci
t
p
O
r
e
bi
F
2F01TC1-CLM97-4F
SPDIF-JACK-FOXCONN
JK702
3
VIN
2
VCC
1
GND
4
D
L
EI
HS
30V
D701
18pF
50V
NON_CI_CAP_RGB_PC
C723
SPG09-DB-010
RGB_PC
JK705
1
R
ED
2
G
R
EE
N
3
B
LU
E
4
G
N
D
_1
5
D
D
C
_G
N
D
6
R
ED
_G
N
D
7
G
R
EE
N
_G
N
D
8
B
LU
E_
G
N
D
9
N
C
1
0
SY
N
C
_G
N
D
1
1
G
N
D
_2
1
2
D
D
C
_D
A
TA
1
3
H
_S
Y
N
C
1
4
V
_S
Y
N
C
1
5
D
D
C
_C
LO
C
K
1
6
SH
IL
E
D
75
R701
SPDIF_OUT
47pF
50V
C708
JP_GND1
JP_GND2
JP_GND3
JP_GND4
USB1_DM
TH
ER
M
A
L
TPS2066CDGNR
IC702
USB1&2
3
EN1
2
IN
4
EN2
1
GND
5
FLT2
6
OUT2
7
OUT1
8
FLT1
9
[EP]GND
10K
R713
/USB1_OCD
+3.3V_Normal
USB1_CTL
10uF
10V
C715
+5V_USB
/USB2_OCD
USB2_DP
0.1uF
16V
C714
10uF
10V
C722
+5V_USB_1
USB1_CTL
+5V_USB_2
+5V_USB
USB2_CTL
+5V_USB_1
AP2191DSG
EAN61849601
IC703
only USB1
3
IN_2
2
IN_1
4
EN
1
GND
5
FLG
6
OUT_1
7
OUT_2
8
NC
M
AE
RT
S
N
W
O
D
BS
U
3AU04S-305-ZC-(LG)
JK703
1
2
3
4
5
10uF
10V
C716
USB1&2
R
C
L
A
M
P0
50
2B
A
O
PT
D
70
9
U
SB
D
O
W
N
S
TR
EA
M
3AU04S-305-ZC-(LG)
JK704
USB1&2
1
2
3
4
5
USB1_DP
/USB1_OCD
+3.3V_Normal
R
C
L
A
M
P0
50
2B
A
O
PT
D
70
8
+5V_USB_2
USB2_DM
10uF
10V
C719
USB1&2
10K
R714
USB1&2
10uF
10V
C717
+5V_USB_1
RS232C
RGB PC
5 . 1 5 M s t a r C i r c u i t A p p l i c a t i o n
SPDIF OPTIC JACK
L-MONO
Rear AV
REAR JACKS
7
LA2AW
2 0 1 2 . 0 9 . 1 1
JP_GND
USB2
OCP only for USB1
OCP for USB1/2
USB1
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