Read LG 72LEX9S-CA (CHASSIS:LC03N) 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.
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.
LEX9_HDMI_CN
CK-_HDMI3
R6332
22
GND
+5V_NORMAL
C6300
0.1uF
0.1uF
+5V_NORMAL
HDMI_RX1+
D0-_HDMI1
R6320
22K
D1+_HDMI2
D2+_HDMI1
5V_HDMI_2
HDMI_HPD_3
+3.3V_HDMI
GND
GND
DDC_SDA_3
R6319
1.8K
1.8K
HDMI_CEC
D0+_HDMI3
CEC_REMOTE
C6304
0.1uF
R6340
4.7K
OPT
R6317
47K
Q6303
KRC104S
E
B
C
R6334
22
C6317
0.1uF
16V
0.1uF
16V
R6307
4.7K
4.7K
HDMI_CLK-
+3.3V_NORMAL
R6301
1K
GND
DDC_SCL_3
HDMI_CLK+
D1-_HDMI2
GND
D6309
A1
C
A2
CEC_REMOTE
D1-_HDMI3
R6306
4.7K
4.7K
HDMI_RX1-
R6312
0
C6308
0.1uF
D0+_HDMI1
R6305
0
GND
R6315
4.7K
4.7K
R6310
1K
Q6305
KRC104S
E
B
C
HDMI_HPD_2
C6321
0.1uF
GND
D0+_HDMI2
DDC_SCL_3
R6303
0
D1+_HDMI3
+5V_NORMAL
D0-_HDMI3
+5V_NORMAL
R6308
47K
47K
R6330
0
SCL2_3.3V
D6302
5.5V
5.5V
ESD
DDC_SDA_1
DDC_SCL_1
Q6300
KRC104S
E
B
C
D6300
5.5V
5.5V
ESD
D2-_HDMI3
D2-_HDMI2
HDMI_SDA
HDMI_HPD_2
CK+_HDMI2
CK-_HDMI2
BSS83
Q6306
S
B
D
G
DDC_SDA_3
R6318
1.8K
1.8K
R6338
0
OPT
CK+_HDMI3
JP6303
R6336
12K
5V_HPD3
5V_HDMI_2
Q6304
KRC104S
E
B
C
GND
C6306
0.1uF
DDC_SDA_2
Q6302
KRC104S
E
B
C
DDC_SCL_1
5V_HPD1
HDMI_RX2+
CK-_HDMI3
5V_HPD1
+1.8V_HDMI
D1-_HDMI1
C6323
0.1uF
C6320
0.1uF
D6310
5.5V
5.5V
ESD
D1+_HDMI3
D2+_HDMI3
R6304
0
0
R6335
OPT
0
D0-_HDMI2
Q6301
KRC104S
E
B
C
JP6305
JP6304
+3.3V_HDMI
HDMI_RX0+
C6302
0.1uF
16V
0.1uF
16V
5V_HDMI_3
D2+_HDMI2
CK+_HDMI3
GND
+3.3V_HDMI
R6313
47K
C6315
0.1uF
16V
0.1uF
16V
HDMI_HPD_3
DDC_SCL_2
D6308
A1
C
A2
5V_HPD3
5V_HPD2
+3.5V_ST
D0+_HDMI3
HDMI_SCL
R6339
4.7K
4.7K
OPT
5V_HDMI_2
JP6302
D2-_HDMI2
C6319
0.1uF
D1-_HDMI2
R6302
0
0
5V_HDMI_3
5V_HDMI_1
D1-_HDMI3
R6321
0
HDMI_RX0-
CK+_HDMI1
DDC_SDA_1
D6301
5.5V
5.5V
ESD
DDC_SDA_2
D6304
A1
C
A2
+5V_NORMAL
CK+_HDMI2
D0-_HDMI3
C6303
0.1uF
16V
0.1uF
16V
R6316
47K
CEC_REMOTE
CEC_REMOTE
C6312
0.1uF
16V
0.1uF
16V
D6311
MMBD301LT1G
R6331
0
GND
DDC_SCL_3
D6303
5.5V
5.5V
ESD
HDMI_HPD_1
SDA2_3.3V
DDC_SDA_3
GND
R6300
1K
R6311
0
0
5V_HDMI_1
R6309
47K
D2-_HDMI3
CK-_HDMI1
JK6302
KJA-ET-0-0032
EAG42463001
14
NC
13
CE_REMOTE
5
D1_GND
20
JACK_GND
GND
12
CK-
11
CK_GND
2
D2_GND
19
HP_DET
18
5V
10
CK+
4
D1+
1
D2+
17
GND
9
D0-
8
D0_GND
3
D2-
16
DDC_DATA
7
D0+
6
D1-
15
DDC_CLK
C6316
0.1uF
0.1uF
16V
D1+_HDMI2
+1.8V_HDMI
GND
D2-_HDMI1
C6305
0.1uF
16V
0.1uF
16V
5V_HPD2
R6314
47K
D2+_HDMI2
C6301
0.1uF
16V
0.1uF
16V
D0+_HDMI2
DDC_SDA_2
JP6300
C6322
0.1uF
16V
0.1uF
16V
L6300
BLM18PG121SN1D
D2+_HDMI3
C6318
0.1uF
D1+_HDMI1
D0-_HDMI2
C6307
0.1uF
DDC_SCL_2
JP6301
5V_HDMI_3
HDMI_RX2-
DDC_SCL_2
CK-_HDMI2
R6329 0
OPT
R6337
0
OPT
0
OPT
C6313
0.1uF
16V
0.1uF
16V
C6314
0.1uF
C6309
0.1uF
C6310
0.1uF
IC6300
TDA19997
1
VSS_1
2
OUT_C+
3
OUT_C-
4
VDDO[3V3]
5
OUT_DDC_CLK
6
OUT_DDC_DAT
7
VSS_2
8
VDDDC[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
AUX_5V
26
VSS_4
27
TEST1
28
RXB_HPD
29
RXB_5V
30
RXB_DDC_DAT
31
RXB_DDC_CLK
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
CDEC_DDC
45
VDDDC[1V8]_2
46
VDDDC[1V8]_4
47
TEST2
48
PD
49
I2C_SDA
50
I2C_SCL
51
RXE_DDC_CLK
52
RXE_DDC_DAT
53
INT_N/MUTE
54
CDEC_STBY
55
VDDS[3V3]
56
VSS_7
57
CEC
58
RXC_HPD
59
RXC_5V
60
RXC_DDC_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
RXD_HPD
77
RXD_5V
78
RXD_DDC_DAT
79
RXD_DDC_CLK
80
RXD_C-
81
RXD_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
VDDDC[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-
D6305
5.6V
CDS3C05HDMI1
ESD
D6306
5.6V
CDS3C05HDMI1
ESD
GND
R6322
33
R6328
33
R6325
33
R6327
33
R6324
33
R6323
33
D6307
5.5V
ESD
ESD
R6326
27K
JK6300
KJA-ET-0-0032
EAG42463001
14
NC
13
CE_REMOTE
5
D1_GND
20
JACK_GND
12
CK-
11
CK_GND
2
D2_GND
19
HP_DET
18
5V
10
CK+
4
D1+
1
D2+
17
GND
9
D0-
8
D0_GND
3
D2-
16
DDC_DATA
7
D0+
6
D1-
15
DDC_CLK
JK6301
KJA-ET-0-0032
EAG42463001
14
NC
13
CE_REMOTE
5
D1_GND
20
JACK_GND
12
CK-
11
CK_GND
2
D2_GND
19
HP_DET
18
5V
10
CK+
4
D1+
1
D2+
17
GND
9
D0-
8
D0_GND
3
D2-
16
DDC_DATA
7
D0+
6
D1-
15
DDC_CLK
HDMI_HPD_4
5V_HDMI_4
D6312
5.6V
CDS3C05HDMI1
ESD
D6313
5.6V
CDS3C05HDMI1
ESD
GND
GND
D6315
5.6V
CDS3C05HDMI1
ESD
D6314
5.6V
CDS3C05HDMI1
ESD
D0+_HDMI1
D0-_HDMI1
CK-_HDMI1
DDC_SDA_1
R6333
0
OPT
D2+_HDMI1
5V_HDMI_1
D1-_HDMI1
CK+_HDMI1
HDMI_HPD_1
C6311
0.1uF
16V
DDC_SCL_1
D2-_HDMI1
D1+_HDMI1
LEE GI YOUNG
* HDMI CEC
EDID Pull-up
SIDE_UI_HW_PORT1
HDMI4
HDMI2
Ready for TDA19997
HDMI3
HDMI1
SIDE_UI_HW_PORT2
Place close
to TDA9996
to TDA9996
10.01.21
63 100
SIDE_UI_HW_PORT3
SIDE_UI_HW_PORT4
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