LG 37LV3730 (CHASSIS:LB12B) Service Manual ▷ View online
Fiber Optic
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.
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.
D3812
5.6V
ESD_COMMON
C3830
0.22uF
10V
0.22uF
10V
NEC_TXD
HP_ROUT_N
D3814
30V
ESD_COMMON
+3.3V_Normal
C3829
0.22uF
10V
0.22uF
10V
DSUB_HSYNC
R3803
470K
470K
D3808
30V
30V
ESD_COMMON
C3826
0.1uF
16V
R3810
2.7K
2.7K
D3801
5.6V
ESD_COMMON
AMOTECH
BCM_RX
R3819
4.7K
DSUB_VSYNC
C3819
1uF
10V
IC3804
TPA6132A2
TPA6132A2
EAN60724701
3
INR+
2
INL+
4
INR-
1
INL-
5
OUTR
6
G0
7
G1
8
HPVSS
9
CPN
10
PGND
11
CPP
12
HPVDD
13
EN
14
VDD
15
SGND
16
OUTL
C3812
18pF
50V
D3805
30V
C3824
10uF
10V
10V
C3805
560pF
50V
50V
C3807
47pF
50V
47pF
50V
IC3801
74F08D
74F08D
3
Q0
2
D0B
4
D1A
1
D0A
6
Q1
5
D1B
7
GND
8
Q2
9
D2A
10
D2B
11
Q3
12
D3A
13
D3B
14
VCC
HP_LOUT
P3802
SPG09-DB-009
1
2
3
4
5
6
7
8
9
10
+3.3V_Normal
C3809
47pF
50V
47pF
50V
HP_LOUT
C3818
1uF
10V
1uF
10V
L3805
BG2012B080TF
C3804
0.1uF
0.1uF
16V
JP3809
JK3801
PEJ027-01
6B
T_TERMINAL2
7B
B_TERMINAL2
5
T_SPRING
4
R_SPRING
7A
B_TERMINAL1
6A
T_TERMINAL1
3
E_SPRING
C3815
0.1uF
BCM_TX
+3.5V_ST
HP_DET
RGB_DDC_SCL
C3813
18pF
18pF
50V
C3828
2.2uF
10V
SPDIF_OUT
R3801
10K
10K
OPT
C3806
560pF
50V
50V
HP_ROUT
C3823
1uF
10V
1uF
10V
D3810
KDS184
A2
C
A1
HP_ROUT_P
HP_ROUT
R3802
10K
10K
OPT
R3818
OPT
C3820
1uF
1uF
10V
RGB_DDC_SDA
R3825
OPT
100K
D3803
30V
30V
OPT
R3808
75
R3809
2.7K
C3825
2.2uF
10V
2.2uF
10V
D3809
5.6V
OPT
OPT
D3811
5.6V
OPT
R3827
0
0
OPT
R3828
1K
1K
PC_L_IN
R3807
75
R3812
22
D3813
30V
ESD_COMMON
R3813
10K
R3805
2.7K
C3817
0.1uF
R3814
10K
10K
C3816
0.1uF
DSUB_B+
C3803
560pF
50V
50V
R3815
1K
DSUB_DET
HP_LOUT_N
C3814
0.1uF
JK3802
JST1223-001
1
GND
2
VCC
3
VINPUT
4
FIX_POLE
Q3801
2SC3052
E
B
C
L3803
BLM18PG121SN1D
+5V_Normal
L3804
BG2012B080TF
R3826
4.7K
4.7K
D3802
5.6V
ESD_COMMON
AMOTECH
DSUB_G+
D3804
30V
+3.3V_Normal
+3.3V_Normal
JK3803
KJA-PH-0-0177
3
DETECT
4
L
5
GND
1
R
EDID_WP
R3820
OPT
R3804
470K
470K
C3808
47pF
50V
47pF
50V
SIDE_HP_MUTE
P3801
SPG09-DB-010
1
RED
2
GREEN
3
BLUE
4
GND_1
5
DDC_GND
6
RED_GND
7
GREEN_GND
8
BLUE_GND
9
NC
10
SYNC_GND
11
GND_2
12
DDC_DATA
13
H_SYNC
14
V_SYNC
15
DDC_CLOCK
16
SHILED
R3817
4.7K
JP3808
+3.3V_Normal
DSUB_R+
R3811
22
D3807
30V
30V
ESD_COMMON
NEC_RXD
IC3802
AT24C02BN-SH-T
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
C3827
2.2uF
10V
2.2uF
10V
D3806
30V
30V
ESD_COMMON
PC_R_IN
C3802
560pF
50V
50V
C3821
1uF
1uF
10V
R3806
75
HP_LOUT_P
+5V_Normal
IC3803
MAX3232CDR
EAN41348201
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
IR_OUT
R3829
0
IR_OUT
+3.5V_ST
R3831
4.7K
OPT
R3830
4.7K
OPT
R3823
0
0
R3822
0
0
R3821
0
0
R3824
0
0
R3854
22
22
R3855
22
22
L3806
BLM15BD121SN1
L3807
BLM15BD121SN1
L3808
BLM15BD121SN1
R3850 0
OPT
R3851 0
OPT
R3853 0
OPT
R3852 0
OPT
D3808-*1
5.6V
ESD_CERADIODE
D3806-*1
5.6V
ESD_CERADIODE
D3807-*1
5.6V
ESD_CERADIODE
D3812-*1
5.6V
ESD_CERADIODE
D3813-*1
5.6V
ESD_CERADIODE
D3814-*1
5.6V
ESD_CERADIODE
R3856
22
R3857
22
R3858
1K
1K
R3816
2.7K
R3859
100
100
R3860
100
100
R3861
0
0
C3810
22pF
50V
22pF
50V
C3811
22pF
50V
22pF
50V
R3862
0
0
R3863
0
0
1ST : 0TRIY80001A, 2ND : 0TR387500AA
D3804,D3805,D3806
D3807,D3808,D3813
D3814
D3807,D3808,D3813
D3814
RGB PC
Q3801
D3810
RS232C
DUAL COMPONENT
HIGH : SELECT X1, Y1, SELECT MAIN TX/RX
PC AUDIO
Close to the IC
1ST : EAH39491601, 2ND : EAH33945901
SPDIF OUT
RGB/ PC AUDIO/ SPDIF/ EARPHONE/ RS232C
EARPHON JACK
EARPHONE AMP
1ST : 0DD184009AA, 2ND : 0DSIH00028A
LOW : SELECT X0, Y0, SELECT MICOM TX/RX
BCM35230
50
38
LV7 COMM JACK
Closed to JACK
LPF READEY
(For H/P Noise Improvement)
(For H/P Noise Improvement)
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.
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.
EPHY_RDN
EPHY_TDN
C3901
0.1uF
16V
EPHY_TDP
+3.3V_Normal
EPHY_LINK
C3902
0.1uF
16V
EPHY_RDP
+2.5V_BCM35230
EPHY_ACTIVITY
JK3901
XRJV-01V-D12-180
1
2
3
4
5
6
7
8
D1
D2
D3
D4
9
D3906
5.5V
ADLC 5S 03 015
D3901
5.5V
ADLC 5S 03 015
D3902
5.5V
ADLC 5S 03 015
D3905
5.5V
ADLC 5S 03 015
D3903
5.5V
ADLC 5S 03 015
D3904
5.5V
ADLC 5S 03 015
L3901
MLB-201209-0120P-N2
R3901
240
R3902
240
Ethernet Block
BCM35230
50
39
LV7 ETHERNET
U
S
B
D
O
W
N
S
T
R
E
A
M
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.
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.
SIDE_USB_CTL1
R4102
2.7K
2.7K
D4101
5.6V
CDS3C05HDMI1
C4101
10uF
10V
10uF
10V
+3.3V_Normal
R4101
4.7K
OPT
4.7K
OPT
L4101
MLB-201209-0120P-N2
120-ohm
D4102
5.6V
CDS3C05HDMI1
SIDE_USB_DM
SIDE_USB_DP
SIDE_USB_OCD1
+5V_USB
C4102
100uF
16V
16V
P
4
1
0
1
3
A
U
0
4
S
-
3
0
5
-
Z
C
-
(
L
G
)
1
2
3
4
5
IC4101
AP2191DSG
3
IN_2
2
IN_1
4
EN
1
GND
5
FLG
6
OUT_1
7
OUT_2
8
NC
C4103
0.1uF
16V
0.1uF
16V
D4103
RCLAMP0502BA
OPT
D4101,D4102
DUAL COMPONENT
1ST : EAH42720601 2ND : EAH60994401
USB
LV7 EU USB
41
50
BCM35230
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.
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.
TXD1N
TXB1N
R4211
10K
10K
BIT_SEL_LOW
TXA3N
TXB3P
TXCCLKN
TXD4P
TXD0P
TXA3P
R4207
33
FRC2
SCL2_3.3V
TXC3N
TXBCLKN
TXB1P
TXD3N
TXC0N
SDA2_3.3V
TXA4P
TXDCLKP
TXACLKN
TXA1P
TXA0P
TXD2N
TXB0N
TXC2N
TXD0N
R4212
3.3K
LVDS_SEL_HIGH
TXA2P
TXA1N
FRC_RESET
C4201
10uF
25V
10uF
25V
OPT
R4208
33
FRC2
TXB2P
TXD2P
TXBCLKP
TXC4P
R4205
33
FRC2
R4213
10K
LVDS_SEL_LOW
R4206
33
FRC2
TXC3P
C4202
1000pF
50V
1000pF
50V
TXD3P
TXDCLKN
TXC1P
TXACLKP
TXC4N
TXCCLKP
TXB3N
TXD4N
TXA2N
TXB0P
TXD1P
C4203
0.1uF
50V
0.1uF
50V
TXA0N
3D_SYNC_RF
TXB2N
TXC1N
TXB4P
+3.3V_Normal
TXC0P
TXA4N
TXB4N
TXC2P
PANEL_VCC
P4201
FI-RE51S-HF-J-R1500
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
P4202
FI-RE41S-HF-J-R1500
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
L4201
MLB-201209-0120P-N2
3D_SYNC_RF
R4214
0
LVDS_10bit
R4215
0
LVDS_10bit
R4216
0
LVDS_10bit
R4217
0
LVDS_10bit
[FHD120Hz LVDS output(51pin+41Pin)]
LVDS_SEL
BIT_SEL
BCM35230
LV7 EU LVDS
42
50
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