LG 55LV355B-UA / 55LV355C-UA (CHASSIS:LA0AC) 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.
AMP_SCL
+1.8V_AMP
0.1uF
16V
C502
12
R525
1000pF
50V
C506
0.1uF
50V
50V
C527
22000pF
50V
C525
390pF
50V
C530
4.7K
R529
0.47uF
50V
C534
10uF
10V
C501
OPT
18pF
50V
C510
3.3K
R508
12
R526
AUD_LRCH
D1
NS
12
1
GP
81
M
L
B
L502
12
R521
4.7K
R528
0.1uF
50V
C536
+3.5V_ST
SP
K
_O
U
T_
M
U
TE
1000pF
50V
C508
4.7K
R530
SPK_R+
1
R
47
4
1N4148W
100V
OPT
D502
0.1uF
C509
2SC3052
Q501
E
B
C
WAFER-ANGLE
P501
1
2
3
4
100
R505
22000pF
50V
C514
33
R506
1uF
25V
C520
10uF
35V
C528
0.1uF
16V
C505
390pF
50V
C532
0.1uF
16V
C513
100
R504
NRS6045T100MMGK
10.0uH
L508
0.01uF
50V
OPT
C547
1uF
25V
C522
SPK_L+
10uF
10V
C421
0.1uF
50V
C539
1uF
25V
C512
AUD_LRCK
SPK_R-
10K
R515
0.1uF
50V
C538
SPK_L-
3 . 3
OPT
R535
0.1uF
50V
C515
1N4148W
100V
OPT
D503
33
R507
+24V
0.1uF
16V
C434
12
R519
SPK_R-
+1.8V_AMP
AUD_SCK
AMP_SDA
1uF
25V
C517
B
L
M
18
PG
12
1S
N
1D
L504
SPK_R+
NRS6045T100MMGK
10.0uH
L507
12
R520
0.1uF
50V
C537
22pF
50V
OPT
C545
390pF
50V
C531
390pF
50V
C529
10uF
10V
C433
OPT
10uF
10V
C511
OPT
0
R
53
6
1N4148W
100V
OPT
D504
12
R524
10uF
35V
C521
+3.3V_Normal
0.1uF
50V
50V
C526
1000pF
50V
C516
AUD_MASTER_CLK
22pF
50V
OPT
C544
100
R514
18pF
50V
C507
0.1uF
50V
C519
T
P
50
2
22pF
50V
OPT
C546
AMP_RESET
POWER_DET
+1.8V_AMP
12
R523
D1
NS
12
1
GP
81
M
L
B
L501
4.7K
R527
22000pF
50V
C524
22000pF
50V
C518
+24V
+3.3V_Normal
100pF
50V
C504
100
R503
0.47uF
50V
C535
+1.8V_AMP
0
OPT
R513
10K
R517
THERMAL
NTP-7100
EAN60969603
IC501
1
BST1A
2
VDR1A
3
/RESET
4
AD
5
DGND_1
6
GND_IO
7
CLK_I
8
VDD_IO
9
DGND_PLL
10
AGND_PLL
11
LF
12
AVDD_PLL
13
DVDD_PLL
14
GND
1
5
D
G
N
D
_2
1
6
D
V
D
D
1
7
SD
A
TA
1
8
W
C
K
1
9
B
C
K
2
0
SD
A
2
1
SC
L
2
2
M
O
N
IT
O
R
0
2
3
M
O
N
IT
O
R
1
2
4
M
O
N
IT
O
R
2
2
5
/F
A
U
L
T
2
6
V
D
R
2B
2
7
B
ST
2B
2
8
PG
N
D
2B
_1
29
PGND2B_2
30
OUT2B_1
31
OUT2B_2
32
PVDD2B_1
33
PVDD2B_2
34
PVDD2A_1
35
PVDD2A_2
36
OUT2A_1
37
OUT2A_2
38
PGND2A_1
39
PGND2A_2
40
BST2A
41
VDR2A
42
NC
4
3
V
D
R
1B
4
4
B
ST
1B
4
5
PG
N
D
1B
_1
4
6
PG
N
D
1B
_2
4
7
O
U
T
1B
_1
4
8
O
U
T
1B
_2
4
9
PV
D
D
1B
_1
5
0
PV
D
D
1B
_2
5
1
PV
D
D
1A
_1
5
2
PV
D
D
1A
_2
5
3
O
U
T
1A
_1
5
4
O
U
T
1A
_2
5
5
PG
N
D
1A
_1
5
6
PG
N
D
1A
_2
57
E
P_
PA
D
10uF
10V
C503
OPT
0.1uF
16V
C446
AP1117E18G-13
IC404
2
OUT
3
IN
1 ADJ/GND
NRS6045T100MMGK
10.0uH
L509
1N4148W
100V
OPT
D501
NRS6045T100MMGK
10.0uH
L506
12
R522
SPK_L-
AMP_MUTE
SPK_L+
AMP_NTP
20101023
16
GP2R
SPEAKER_R
120 mA
SPEAKER_L
Vd=1.4V
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.
5.6V
D1626
ET_MDIO
TP1619
30V
D1619
10K
R1632
0.1uF
16V
C1646
75
R1620
ET_RXD0
+3.3V_Normal
120-ohm
L1609
5.6V
D1613
OPT
TP1613
TP1614
COMP2_Pb+
/RST-PHY
ET_REF_CLK
10K
R1612
470K
R1672
1K
R1666
5.6V
D1616
PPJ233-01
JK1604
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
TP1616
10K
R1685
470K
R1625
AV_CVBS_DET
ET_MDC
5.6V
D1617
12K
R1636
TP1610
30V
D1615
COMP2_Pr+
ET_RXD1
30V
D1614
12
K
R
16
89
1000pF
50V
C1616
OPT
TP1615
470K
R1671
1K
R1615
5.6V
D1624
OPT
47pF
50V
C1643
AV_L_IN
30V
D1612
ET_TXD1
470K
R1626
330pF
50V
C1662
120-ohm
L1610
AV_R_IN
12K
R1688
ET_TXD0
10K
R1684
PPJ234-01
JK1603
5A
[GN]O-SPRING
6A
[GN]E-LUG
4A
[GN]CONTACT
7B
[BL]E-LUG-S
5B
[BL]O-SPRING
7C
[RD]E-LUG-S
5C
[RD]O-SPRING_1
5D
[WH]O-SPRING
4E
[RD]CONTACT
5E
[RD]O-SPRING_2
6E
[RD]E-LUG
330pF
50V
C1663
ET_RXER
COMP2_Y+
TP1617
5.6V
D1625
75
R1621
ET_TX_EN
12K
R1634
AV_CVBS_IN
TP1611
COMP2_DET
TP1618
TP1612
+3.3V_Normal
220pF
50V
OPT
C1648
TP1620
ET_CRS
75
R1654
COMP2_L_IN
1000pF
50V
C1617
OPT
COMP2_R_IN
75
R1619
10K
R1660
10K
R1633
REAR_JACK
20101023
17
GP2R
COMPONENT2
ETHERNET FOR DVB_T2
L-MONO
Rear AV
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.
510
R153
OPT
0
.0
1
u
F
C
11
5
RJP_CTRL2
001:AN26
510
R164
2.2uF
16V
C120
MLB-201209-0120P-N2
L101
5
.1
V
D
10
5
+12V/+15V
510
R167
5
.1
V
D
10
1
5
.1
V
D
10
3
5
.1
V
D
10
4
3
.9
K
R
16
2
3
.9
K
R
16
5
O
PT
510
R166
RJP_CTRL0
001:AN27
3
.9
K
R
16
1
0
.0
1
u
F
C
11
9
RJP_CTRL4
001:AN25
10K
R114
47uF
25V
C114
5
.1
V
D
10
2
0
.0
1
u
F
C
11
7
MJ-657PT-8-SD
JK1105
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10K
R130
RJP_CTRL1
001:AN27
10K
R131
1uF
25V
OPT
C113
+3.3V_Normal
510
R154
3
.9
K
R
15
2
0
.0
1
u
F
C
11
6
AO3407A
Q102
G
D
S
RJP_CTRL3
001:AN26
0
.0
1
u
F
C
11
8
3
.9
K
R
16
3
SIDE_JACK
20101023
18
GP2R
RJP
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.
10K
OPT
R1907
22uF
35V
C1913
BLM18PG121SN1D
L1980
10K
R1900
EXT_OUT_R
NL17SZ08DFT2G
IC1900
3
2
4
1
5
EXT_SPK_L
002:U7
1
u
F
C
19
01
1uF
OPT
C1990
0.1uF
50V
C10063
2.2uF
50V
C1916
10K
R1912
+3.3V_Normal
EXT_AMP_SD
10uF
35V
C1914
POWER_ON/OFF1
1uF
C1906
AMP_RESET
10K
OPT
R1905
2SC3052
Q1981
22.0uH
L10056
+3.5V_ST
RT1P141C-T112
Q1982
1
2
3
2.2uF
50V
C1918
EXT_OUT_L
0.1uF
50V
C1912
1uF
50V
C1902
10K
R1911
0.1uF
C1900
0
R10078
2.2uF
50V
C1917
4.7K
R1909
1uF
OPT
C1991
0.1uF
50V
C1909
10K
R1901
47uF
25V
C1920
10K
R1906
22.0uH
L10055
2SC3052
Q1980
1uF
50V
C1903
EXT_OUT_R
10K
O
PT
R1904
4.7K
R1910
2K
R1981
SUB_MUTE
005:AL16;019:E22
EXT_SPK_DET
EXT_SPK_R
002:U7
10K
R1908
47uF
25V
C1919
0
R
1
0
0
8
0
O
PT
+3.5V_ST
TPA3124D2PWPR
IC1901
3
PVCCL_2
2
SD
4
MUTE
1
PVCCL_1
6
RIN
5
LIN
7
BYPASS
8
AGND_1
9
AGND_2
10
PVCCR_1
11
VCLAMP
12
PVCCR_2
13
PGNDR_1
14
PGNDR_2
15
ROUT
16
BSR
17
GAIN1
18
GAIN0
19
AVCC_1
20
AVCC_2
21
BSL
22
LOUT
23
PGNDL_1
24
PGNDL_2
0.1uF
50V
C1908
EXT_OUT_L
10uF
35V
C10064
0.22uF
25V
C1910
POWER_DET
004:AN28;005:Z8;016:T13
1uF
C1907
10K
R1903
EXT_OUT_R
PEJ027-01
JK1990
6B T_TERMINAL2
7B B_TERMINAL2
5 T_SPRING
4 R_SPRING
7A B_TERMINAL1
6A T_TERMINAL1
3 E_SPRING
2.2uF
50V
C1915
100
R1991
22uF
35V
C1905
0.1uF
C1980
0
R10079
OPT
10K
R1982
100K
R1990
0.22uF
25V
C1911
2K
R1980
EXT_OUT_L
+24V
4
.7
K
R
19
02
O
PT
4
.7
K
R
1
9
9
8
1
O
PT
0
R10076
1K
R1971
OPT
0
R10077
OPT
MMBT3904(NXP)
Q1970
E
B
C
100
R1970
+3.5V_ST
SUB_MUTE
005:AL16;019:AL18
SPK_OUT_MUTE
PCMCI
20101023
20
GP2R
EXT_SPEAKER OUT
EXT_SPEAKER_MUTE
EXT_SPEAKER
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