LG 55LV5400 (CHASSIS:LA12E) Service Manual ▷ View 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.
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_TDP
L1401
MLB-201209-0120P-N2
EPHY_RDP
+3.3V_Normal
EPHY_RDN
C1401
0.1uF
16V
+2.5V_BCM35230
EPHY_TDN
EPHY_ACTIVITY
EPHY_LINK
JK1401
XRJH-01A-4-DA7-180-LG(B)
1
R1
2
R2
3
R3
4
R4
5
R5
6
R6
7
R7
8
R8
12
SHIELD
9
R9
11
R11
10
R10[GND]
D1
YL_C
D2
YL_A
D3
GN_C
D4
GN_A
D1403
5V
LAN_ESD
D1405
5V
LAN_ESD
D1401
5.5V
LAN_ESD
D1404
5.5V
LAN_ESD
D1402
5.5V
LAN_ESD
D1406
5.5V
LAN_ESD
R1402
240
R1401
240
DUAL COMPONENT
D1401,D1402
D1403,D1404
D1405,D1406
D1403,D1404
D1405,D1406
14
ETHERNET
Ethernet Block
1ST : EAH42720601 2ND : EAH60994401
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.
TXA2P
TXACLKP
C1503
0.1uF
16V
0.1uF
16V
3D_SYNC_RF
TXDCLKP
TXA3N
TXB2N
R1514
10K
LVDS_SEL_LOW
P1501
FI-RE51S-HFK-A
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
PANEL_VCC
TXB3P
SCL2_3.3V
+3.3V_Normal
TXB3N
R1504
33
FRC2
P1502
FI-RE41S-HFK-A
LVDS_41P
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
TXA0N
TXD2N
R1512
10K
10K
BIT_SEL_LOW
TXB0N
TXC0P
TXACLKN
TXD0N
C1501
10uF
25V
10uF
25V
OPT
TXC1P
TXC3N
TXB1P
TXC2P
TXC0N
TXBCLKP
TXC4N
TXCCLKP
TXA1P
TXD1P
TXDCLKN
SDA2_3.3V
TXCCLKN
TXBCLKN
R1507
33
FRC2
TXD0P
TXB4N
TXB2P
TXC4P
TXD4P
TXA1N
TXB4P
TXD3N
R1506
33
FRC2
TXB1N
TXA0P
R1508
33
FRC2
TXC2N
R1513
3.3K
LVDS_SEL_HIGH
TXA2N
TXA3P
TXC1N
TXD3P
TXD2P
TXA4N
TXD1N
TXC3P
FRC_RESET
TXA4P
TXD4N
TXB0P
C1502
1000pF
50V
1000pF
50V
L1501
MLB-201209-0120P-N2
R1516
33
SHARP_OPT
PANEL_CTL
C1504
2.2uF
50V
2.2uF
50V
LVDS_41P
LVDS_SEL
BCM35230
50
15
LVDS
FHD120Hz LVDS output(51pin+41Pin)
BIT_SEL
REVERSE MARK
2010.11.03
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.
SCL2_3.3V
R1602
33
SDA2_3.3V
R1601
33
L/DIM0_MOSI
L/DIM0_SCLK
L/DIM0_VS
P1601
12507WR-08L
1
2
3
4
5
6
7
8
9
50
BCM35230
16
L_DIMMING
[Local Dimming Block]
T
H
E
R
M
A
L
T
H
E
R
M
A
L
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.
R1745-*1
CIS21J121
L1709
120-ohm
+3.3V_DVDD
C1744
0.033uF
50V
R1706
100
C1777
0.33uF
50V
0.33uF
50V
SPK_Woofer_R+
SPK_Woofer_R-
R1730
3.3
3.3
WOOFER
C1787
0.01uF
0.01uF
50V
WOOFER
C1703
33pF
33pF
OPT
C1769
100pF
50V
100pF
50V
WOOFER
R1710
33
C1737
2200pF
50V
+3.3V_AU_AVDD
+24V_AMP
SDA3_3.3V
AMP_RESET_N
R1722
18
1/16W
WOOFER
R1739
0
0
C1763
10uF
35V
WOOFER
R1731
3.3
3.3
WOOFER
SPK_L+
C1724
0.047uF
C1732
4700pF
+3.3V_DVDD
AMP_RESET
+3.3V_AU_AVDD
C
1
7
3
9
1
u
F
2
5
V
WOOFER
SPK_L-
R1752
0
0
WOOFER
C1797
33pF
33pF
OPT
SCL3_3.3V
R1720
470
WOOFER
+24V
P1702
AUDIO_ANGLE
WAFER-ANGLE
1
2
3
4
R1718
470
WOOFER
R1742
0
0
SPK_OUTPUT_RESISTER
C1719
33pF
33pF
OPT
C1780
0.33uF
50V
0.33uF
50V
WOOFER
R1757
0
WOOFER
C
1
7
4
0
1
u
F
2
5
V
R1702
33
R1743
0
0
+24V_AMP
SPK_Woofer_L-
C1735
2200pF
50V
WOOFER
R1753
0
C1768
100pF
50V
100pF
50V
WOOFER
SPK_Woofer_L+
C1738
0.1uF
0.1uF
SPK_L+
R1755
0
C1791
0.01uF
0.01uF
50V
C1774
100pF
50V
100pF
50V
SPK_R+
C1767
100pF
50V
100pF
50V
WOOFER
AUD_SCK
C1717
0.1uF
0.1uF
WOOFER
L1710
120-ohm
C1789
0.01uF
0.01uF
50V
WOOFER
R1743-*1
CIS21J121
SPK_Woofer_L+
C1792
0.01uF
0.01uF
50V
Amp_Mute_PDN
SDA3_3.3V
C1721
33pF
33pF
OPT
R1741-*1
CIS21J121
C1758
0.033uF
50V
50V
WOOFER
AUD_SCK
R1741
0
0
R1733
3.3
3.3
WOOFER
C1762
0.033uF
50V
C1711
33pF
33pF
OPT
R1723
18
1/16W
WOOFER
R1728
18
1/16W
C1782
0.33uF
50V
0.33uF
50V
WOOFER
C1748
0.01uF
0.01uF
WOOFER
C1702
1000pF
50V
1000pF
50V
OPT
C1754
0.01uF
0.01uF
C1751
0.01uF
0.01uF
R1724
18
1/16W
WOOFER
C1727
0.1uF
16V
0.1uF
16V
C1701
1000pF
OPT
R1735
3.3
3.3
C1712
0.1uF
0.1uF
SPK_Woofer_R+
C1743
0.033uF
50V
50V
R1721
470
R1732
3.3
3.3
WOOFER
C1720
33pF
33pF
OPT
0.1uF
C1796
50V
R1738
0
0
WOOFER_OUTPUT_RESISTOR
C1761
0.033uF
50V
+24V_AMP
SPK_R-
SPK_L-
C1770
100pF
50V
100pF
50V
WOOFER
R1704
2K
OPT
R1744
0
0
R1705
0
OPT
C1776
0.33uF
50V
0.33uF
50V
WOOFER
+3.3V_AU_AVDD
AMP_MUTE
R1762
10K
10K
OPT
R1761
10K
10K
OPT
SCL3_3.3V
C1736
0.1uF
0.1uF
WOOFER
R1701
10K
C1785
0.33uF
50V
0.33uF
50V
AUD_LRCH
C1766
10uF
35V
C1765
10uF
35V
WOOFER
C1783
0.33uF
50V
0.33uF
50V
L1711
MLB-201209-0120P-N2
AMP_RESET
+3.3V_DVDD
C1775
0.33uF
50V
0.33uF
50V
WOOFER
C1723
0.047uF
WOOFER
R1739-*1
CIS21J121
R1708
33 WOOFER
SPK_Woofer_R-
C1726 4700pF
WOOFER
C1742
0.033uF
50V
WOOFER
C1725
0.1uF
16V
0.1uF
16V
WOOFER
R1742-*1
CIS21J121
SPK_OUTPUT_BEAD
C1728 4700pF
C1741
0.033uF
50V
50V
WOOFER
R1740
0
0
C1733
0.047uF
WOOFER
C1704
33pF
33pF
OPT
R1703
10K
R1738-*1
CIS21J121
WOOFER_OUTPUT_BEAD
C1734
0.047uF
C1788
0.01uF
0.01uF
50V
WOOFER
R1711
33
SPK_R+
R1713
15K
R1734
3.3
3.3
C1790
0.01uF
0.01uF
50V
WOOFER
C1779
0.33uF
50V
0.33uF
50V
WOOFER
R1726
18
1/16W
C1722
33pF
33pF
OPT
Q1701
2SC3052
E
B
C
+24V_AMP
R1717
18K
1%
+3.5V_ST
SPK_Woofer_L-
R1758
0 WOOFER
R1707
0
0
R1754
0
C1718
0.1uF
0.1uF
Amp_Mute_PDN
R1725
18
1/16W
WOOFER
C1731
4700pF
WOOFER
C1771
100pF
50V
100pF
50V
C1773
100pF
50V
100pF
50V
AUD_LRCK
R1729
18
1/16W
C1772
100pF
50V
100pF
50V
C1781
0.33uF
50V
0.33uF
50V
WOOFER
C1759
0.033uF
50V
0.033uF
50V
WOOFER
AUD_MASTER_CLK
+24V_AMP
C1784
0.33uF
50V
0.33uF
50V
AMP_RESET
C1764
10uF
35V
+3.3V_Normal
R1740-*1
CIS21J121
+3.3V_DVDD
C1708
33pF
33pF
OPT
C1794
0.01uF
0.01uF
50V
AUD_MASTER_CLK
0.1uF
C1795
50V
C1778
0.33uF
50V
0.33uF
50V
AUD_LRCK
R1745
0
0
R1719
470
SPK_R-
R1712
15K
WOOFER
AUD_LRCH
R1716
18K
1%
WOOFER
C1710
33pF
33pF
OPT
R1709
33 WOOFER
R1744-*1
CIS21J121
R1759
0 WOOFER
C1752
0.01uF
0.01uF
WOOFER
R1737
3.3
3.3
R1736
3.3
3.3
Amp_Mute_PDN
P1701
SMAW250-05
WOOFER
1
2
3
4
5
R1727
18
1/16W
C1786
0.33uF
50V
0.33uF
50V
C1709
0.1uF
0.1uF
WOOFER
R1756
0
R1760
0 WOOFER
C1706
33pF
33pF
OPT
C1793
0.01uF
0.01uF
50V
C1798
33pF
33pF
OPT
L1704
NRS6045T100MMGK
10.0uH
L1702
WOOFER
10.0uH
NRS6045T100MMGK
L1708
NRS6045T100MMGK
10.0uH
L1707
NRS6045T100MMGK
10.0uH
L1703
NRS6045T100MMGK
10.0uH
L1701
WOOFER
10.0uH
NRS6045T100MMGK
L1706
NRS6045T100MMGK
WOOFER
10.0uH
L1705
NRS6045T100MMGK
WOOFER
10.0uH
IC1701
TAS5727
WOOFER
I2C : 0X56
1
OUT_A
2
PVDD_A_1
3
PVDD_A_2
4
BST_A
5
NC_1
6
SSTIMER
7
NC_2
8
PBTL
9
AVSS
10
PLL_FLTM
11
PLL_FLTP
12
VR_ANA
13
AVDD
14
A_SEL_FAULT
15
MCLK
16
OSC_RES
17
DVSSO
18
VR_DIG
19
PDN
20
LRCLK
21
SCLK
22
SDIN
23
SDA
24
SCL
2
5
R
E
S
E
T
2
6
S
T
E
S
T
2
7
D
V
D
D
2
8
D
V
S
S
2
9
G
N
D
3
0
A
G
N
D
3
1
V
R
E
G
3
2
G
V
D
D
_
O
U
T
_
2
3
3
B
S
T
_
D
3
4
P
V
D
D
_
D
_
1
3
5
P
V
D
D
_
D
_
2
3
6
O
U
T
_
D
37
PGND_CD_1
38
PGND_CD_2
39
OUT_C
40
PVDD_C_1
41
PVDD_C_2
42
BST_C
43
BST_B
44
PVDD_B_1
45
PVDD_B_2
46
OUT_B
47
PGND_AB_1
48
PGND_AB_2
4
9
[EP]
IC1702
TAS5727
I2C : 0X54
1
OUT_A
2
PVDD_A_1
3
PVDD_A_2
4
BST_A
5
NC_1
6
SSTIMER
7
NC_2
8
PBTL
9
AVSS
10
PLL_FLTM
11
PLL_FLTP
12
VR_ANA
13
AVDD
14
A_SEL_FAULT
15
MCLK
16
OSC_RES
17
DVSSO
18
VR_DIG
19
PDN
20
LRCLK
21
SCLK
22
SDIN
23
SDA
24
SCL
2
5
R
E
S
E
T
2
6
S
T
E
S
T
2
7
D
V
D
D
2
8
D
V
S
S
2
9
G
N
D
3
0
A
G
N
D
3
1
V
R
E
G
3
2
G
V
D
D
_
O
U
T
_
2
3
3
B
S
T
_
D
3
4
P
V
D
D
_
D
_
1
3
5
P
V
D
D
_
D
_
2
3
6
O
U
T
_
D
37
PGND_CD_1
38
PGND_CD_2
39
OUT_C
40
PVDD_C_1
41
PVDD_C_2
42
BST_C
43
BST_B
44
PVDD_B_1
45
PVDD_B_2
46
OUT_B
47
PGND_AB_1
48
PGND_AB_2
4
9
[EP]
P1702-*1
TJC2508-4A
AUDIO_STRAIGHT
1
2
3
4
DUAL COMPONENT
VERY CLOSE AMP IC
Q1701
BCM35230
Separate DGND AND AVSS
WOOFER
50
This parts are Located
on AVSS area.
on AVSS area.
SPEAKER_L
17
This parts are Located
on AVSS area.
on AVSS area.
1ST : 0TRIY80001A 2ND : 0TR387500AA
Place at Bottom
VERY CLOSE AMP IC
Separate DGND AND AVSS
AUDIO[TI]
SPEAKER_R
TAS5727
MAIN
VERY CLOSE AMP IC
VERY CLOSE AMP IC
Place at Bottom
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