Read LG 47LH55 (CHASSIS:LA92B) 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.
0
R544
+1.8V_HDMI
TDA9996_SDA
D1-_HDMI4
0.1uF
C527
0
R557
TDA9996_SCL
DDC_SCL_3
D2-_HDMI1
0.1uF
C507
0.1uF
16V
C519
5V_HDMI_4
5V_HDMI_1
+3.3V_HDMI
0.1uF
16V
C529
CK-_HDMI1
D0-_HDMI3
0
R551
0.1uF
16V
C510
0.1uF
16V
C512
0.
1u
F
C516
+1.8V_HDMI
CK+_HDMI1
HPD2
0.
1u
F
C513
4.7K
R552
OPT
0.1uF
C525
HDMI_RX0-
CK+_HDMI4
D2+_HDMI4
0.1uF
C526
HPD4
D2+_HDMI3
D1-_HDMI1
+3.3V_HDMI
CK+_HDMI3
D0+_HDMI1
D0-_HDMI4
0.1uF
16V
C523
R549
HPD1
0.1uF
16V
C506
HDMI_CLK+
DDC_SDA_2
D1+_HDMI1
HDMI_RX2+
0
OPT
R560
0.
1u
F
C517
D2-_HDMI2
D1+_HDMI2
+3.3V_HDMI
CK-_HDMI4
CEC_REMOTE
D2-_HDMI3
0.
1u
F
C515
DDC_SCL_1
0.1uF
16V
C518
HDMI_RX1+
0
R550
0.1uF
16V
C520
CK-_HDMI2
HDMI_RX0+
D0-_HDMI2
12K
R556
0
R543
0.1uF
16V
C522
DDC_SDA_3
+5V_ST
D0+_HDMI2
D2+_HDMI1
HDMI_SCL
0.1uF
16V
C509
D1-_HDMI2
HDMI_RX2-
D1+_HDMI3
0
R548
0.
1u
F
C511
D0+_HDMI3
D0+_HDMI4
CK+_HDMI2
D2+_HDMI2
DDC_SCL_4
H D
M I_
S D
A
DDC_SDA_1
CK-_HDMI3
0.1uF
16V
C524
0.
1u
F
C514
5V_HDMI_2
0.1uF
16V
C508
DDC_SDA_4
0.1uF
C528
D0-_HDMI1
D2-_HDMI4
0
OPT
R555
D1+_HDMI4
5V_HDMI_3
OPT
R554
0.
1u
F
C521
HDMI_CLK-
OPT
R553
D1-_HDMI3
HDMI_RX1-
HPD3
DDC_SCL_2
0.1uF
C530
+1.8V_AMP
CB3216PA501E
L500
+1.8V_HDMI
AVRL161A1R1NT
VR501
OPT
CK+_HDMI1
005:Z12
1K
R1504
OPT
CEC_REMOTE
005:H8;005:H26;005:L27;005:R8;005:AM11
1K
R517
OPT
DDC_SCL_2
005:Y25;005:AM12
DDC_SCL_1
005:R20;005:Y13
0
R503
0
R581
1K
R1501
OPT
0R
5
8
0
1K
R522
OPT
0
R504
JP500
D2+_HDMI1
005:Z10
DDC_SDA_2
005:Y26;005:AM12
0
R508
D1-_HDMI1
005:Z11
0
R512
D1+_HDMI1
005:Z11
AVRL161A1R1NT
VR504
OPT
47K
OPT
R1500
47K
OPT
R1503
JP505
0
R514
0R
5
8
8
D0+_HDMI1
005:Z12
CEC_REMOTE
005:H8;005:H17;005:L27;005:R8;005:AM11
D0+_HDMI3
005:AF6
GND
CEC_REMOTE
005:H26;005:H17;005:L27;005:R8;005:AM11
0
R513
0
R509
1KR516
OPT
5V_HDMI_3
CK-_HDMI3
005:AE6
0R
5
7
9
0R
5
9
1
D1+_HDMI2
005:AM14
0.1uF
16V
C502
OPT
DDC_SCL_3
005:AE6;005:AF25
3.6K
R501
OPT
0R
5
7
7
0.1uF
16V
C501
OPT
0
R582
5V_HDMI_2
001:Y20;005:W27;005:AK15
D0+_HDMI2
005:AM13
D0-_HDMI1
005:Z12
0R
5
7
0
D1-_HDMI3
005:AF6
0R
5
8
9
0R
5
7
6
0R
5
6
9
0
R507
D2-_HDMI2
005:AM14
HPD3
005:AD6
GND
0R
5
8
6
D2+_HDMI2
005:AM14
+3.3V_ST
0
R573
3.6K
R502
OPT
47K
OPT
R1505
0
R511
AVRL161A1R1NT
VR505
OPT
D2-_HDMI1
005:Z11
0
R590
0
R578
0
R571
0
R584
HPD1
005:Z13
5V_HDMI_1
001:AT28;005:Q22;005:AA14
CK-_HDMI1
005:Z12
CK+_HDMI3
005:AE6
DDC_SDA_1
005:R19;005:Y13
0R
5
8
7
0
R575
D0-_HDMI2
005:AM13
AVRL161A1R1NT
VR502
OPT
AVRL161A1R1NT
VR500
OPT
JP504
DDC_SDA_3
005:AE6;005:AF26
JP503
D1+_HDMI3
005:AF6
0.1uF
16V
C500
OPT
0
R506
GND
0
R583
0
R505
CK-_HDMI2
005:AM12
0R
5
9
2
JP502
HPD2
005:AM11
0
R574
0
R510
0R
5
8
5
AVRL161A1R1NT
VR503
VR503
OPT
1K
R515
OPT
3.6K
R500
OPT
D2+_HDMI3
005:AG6
D2-_HDMI3
005:AG6
D0-_HDMI3
005:AF6
+3.3V_ST
D1-_HDMI2
005:AM13
CK+_HDMI2
005:AM12
+3.3V_ST
0
R572
0
R525
GND
0
R524
1K
R521
OPT
0R
5
9
9
D2-_HDMI4
005:AF20
D0-_HDMI4
005:AG20
AVRL161A1R1NT
VR506
OPT
0R
5
9
8
0
R593
CK+_HDMI4
005:AH20
JP507
CK-_HDMI4
005:AH20
1K
R1506
OPT
D0+_HDMI4
005:AG20
3.6K
R518
OPT
0R
5
9
6
D2+_HDMI4
005:AF20
CEC_REMOTE
005:H8;005:H26;005:H17;005:L27;005:AM11
D1+_HDMI4
005:AF20
DDC_SCL_4
005:AH20;005:AM25
47K
OPT
R1507
0
R523
D1-_HDMI4
005:AG20
0.1uF
16V
C505
OPT
0R
5
9
4
0R
5
2
6
HPD4
005:AI20
DDC_SDA_4
005:AH20;005:AM25
AVRL161A1R1NT
VR507
OPT
0R
5
9
5
KJA-ET-0-0032
JK503
14
NC
13
CEC
5
DATA1_SHIELD
20
JACK_GND
12
CLK-
11
CLK_SHIELD
2
DATA2_SHIELD
19
HPD
18
+5V_POWER
10
CLK+
4
DATA1+
1
DATA2+
17
DDC/CEC_GND
9
DATA0-
8
DATA0_SHIELD
3
DATA2-
16
SDA
7
DATA0+
6
DATA1-
15
SCL
0
R519
JP506
+3.3V_ST
5V_HDMI_4
001:AU28;005:AI18;005:AK27
0R
5
9
7
47K
R537
47K
R559
DDC_SCL_2
DDC_SDA_4
5V_HDMI_2
DDC_SCL_1
5V_HDMI_4
DDC_SDA_1
R536
R558
5V_HDMI_3
5V_HDMI_1
47K
R538
47K
R546
DDC_SCL_4
R533
R545
47K
R535
DDC_SDA_2
DDC_SDA_3
DDC_SCL_3
47K
R561
47K
R534
47K
R547
0.1uF
C504
BLM18PG121SN1D
L501
+3.3V
+3.3V_HDMI
2K
R542
2K
R541
JP501
TDA9996HL
IC502
1
VSS_1
2
OUT_C+
3
OUT_C-
4
VDDO[3V3]
5
OUT_DDC_CLK
6
OUT_DDC_DAT
7
VSS_2
8
VDDC[1V8]_1
9
RXA_HPD
10
RXA_5V
11
RXA_DDC_DAT
12
RXA_DDC_CLK
13
RXA_C-
14
RXA_C+
15
VDDH[3V3]_1
16
RXA_D0-
17
RXA_D0+
18
VSS_3
19
RXA_D1-
20
RXA_D1+
21
VDDH[3V3]_2
22
RXA_D2-
23
RXA_D2+
24
VDDH[1V8]_1
25
NC
26
VSS_4
27
TEST
28
R X
B _
H P
D
29
RXB_5V
30
R X
B _D
D C
_ D
A T
31
R X
B _
D D
C _
C L
K
32
RXB_C-
33
RXB_C+
34
VDDH[3V3]_3
35
RXB_D0-
36
RXB_D0+
37
VSS_5
38
RXB_D1-
39
RXB_D1+
40
VDDH[3V3]_4
41
RXB_D2-
42
RXB_D2+
43
VSS_6
44
C D
E C
_ D
D C
45
VDDC[1V8]_2
46
VDDC[3V3]
47
M O
D E
48
P D
49
SDA/SEL1
50
SCL/SEL0
51
XTAL_IN
52
XTAL_OUT
53
INT/HP_CTRL
54
CDEC_STBY
55
VDDS[3V3]
56
VSS_7
57
CEC
58
RXC_HPD
59
RXC_5V
60
RXC_DDCC_DAT
61
RXC_DDC_CLK
62
RXC_C-
63
RXC_C+
64
VDDH[3V3]_5
65
RXC_D0-
66
RXC_D0+
67
VSS_8
68
RXC_D1-
69
RXC_D1+
70
VDDH[3V3]_6
71
RXC_D2-
72
RXC_D2+
73
VSS_9
74
R12K
75
VDDH[1V8]_2
76
R X
D _H
P D
77
R X
D _
5 V
78
R X
D _D
D C
_ D
A T
79
R X
D _D
D C
_ C
L K
80
RXD_DC-
81
R X
D _
D C
+
82
VDDH[3V3]_7
83
RXD_D0-
84
RXD_D0+
85
VSS_10
86
RXD_D1-
87
RXD_D1+
88
VDDH[3V3]_8
89
RXD_D2-
90
RXD_D2+
91
VDDC[1V8]_3
92
VSS_11
93
OUT_D2+
94
OUT_D2-
95
VDDO[1V8]
96
OUT_D1+
97
OUT_D1-
98
VSS_12
99
OUT_D0+
100
OUT_D0-
0
R539
0
R520
0.1uF
16V
C503
GND
AVRL161A1R1NT
VR508
GND
CEC_REMOTE
005:H8;005:H26;005:H17;005:R8;005:AM11
68K
R528
M M
B D
3 0
1 L
T 1
G
D500
+3.3V_ST
HDMI_CEC
001:C32
SSM6N15FU
IC501
3
DRAIN2
2
GATE1
1
SOURCE1
4
SOURCE2
5
GATE2
6
DRAIN1
0
OPT
R527
9.1K
R529
QJ41193-CFEE1-7F
JK502
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
QJ41193-CFEE1-7F
JK501
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
QJ41193-CFEE1-7F
JK500
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
For Only TDA9996 ES3
Net Labels changed for HDMI3
Net Labels changed for HDMI2
UI_HW_PORT1
VARISTORS(VR500/501/502/503/504/505/506/507) on lines-HPD1/2/3/4 are all options
UI_HW_PORT2
UI_HW_PORT3
in case HDMI Switch doesn
t support
ESD protection
SIDE_HDMI_PORT4
HDMI S/W For MSTAR Platform
EDID Pull-up
* HDMI CEC
C
2009
HDMI
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