DOWNLOAD LG 72LEX9S-CA (CHASSIS:LC03N) Service Manual ↓ Size: 9.07 MB | Pages: 40 in PDF or view online for FREE

Model
72LEX9S-CA (CHASSIS:LC03N)
Pages
40
Size
9.07 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
72lex9s-ca-chassis-lc03n.pdf
Date
PREV: LG 72LEX9-CA (CHASSIS:LC03N) Service Manual

LG 72LEX9S-CA (CHASSIS:LC03N) 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.
LEX9_IR/232C/ETHERNET_CN
+3.5V_ST
R6206
3.3K
OPT
R6237
10K
OPT
Q6202
2SC3052
COMMERCIAL_EU
E
B
C
C6209
1000pF
50V
IR_OUT
L6200
BLM18PG121SN1D
+3.5V_ST
LED_B/LG_LOGO
R6212
0
COMMERCIAL_US
R6204
47K
+3.5V_ST
R6213
10K
1%
R6208
22
WIRELESS
C6207
0.1uF
LED_R/BUZZ
C6210
0.1uF
16V
R6224
100
R6209
100
R6218
47K
COMMERCIAL
L6201
BLM18PG121SN1D
P6200
12507WR-12L
1
2
3
4
5
6
7
8
9
10
11
12
13
R6219
47K
WIRELESS
R6216
10K
COMMERCIAL_EU
R6201
0
OPT
R6217
10K
WIRELESS
D6205
5.6V
CDS3C05HDMI1
C6206
0.1uF
R6215
47K
WIRELESS
C6212
100pF
50V
IR_PASS
R6225
100
D6201
5.6V
AMOTECH
+3.5V_ST
+3.5V_ST
C6214
1000pF
50V
OPT
L6203
BLM18PG121SN1D
R6210
100
Q6204
2SC3052
COMMERCIAL
E
B
C
R6226
100
KEY2
+3.5V_ST
+3.5V_ST
Q6205
2SC3052
WIRELESS
E
B
C
D6204
5.6V
CDS3C05HDMI1
IR
C6213
1000pF
50V
OPT
R6221
47K
WIRELESS
C6208
0.1uF
16V
R6227
1.5K
OPT
R6207
22
COMMERCIAL
+3.5V_ST
D6200
5.6V
AMOTECH
R6214
47K
COMMERCIAL_EU
Q6201
2SC3052
E
B
C
R6200
22
Q6203
2SC3052
WIRELESS
E
B
C
R6205
47K
R6220
47K
COMMERCIAL
R6202
47K
C6211
1000pF
50V
R6203
10K
D6206
5.6V
AMOTECH
R6232
1.5K
KEY1
+3.5V_ST
R6211
10K
1%
+3.3V_NORMAL
Q6200
2SC3052
E
B
C
L6202
BLM18PG121SN1D
NEC_EEPROM_SCL
NEC_EEPROM_SDA
D6211 5.6V
L6204
CIC21J501NE
D6212 5.6V
D6210
5.6V
D6207 5.6V
EPHY_TDN
D6209 5.6V
EPHY_ACTIVITY
R6242
510
C6219
1000pF
50V
EPHY_LINK
D3.3V
R6243
510
D6208
5.6V
EPHY_RDP
EPHY_RDN
C6220
1000pF
50V
EPHY_TDP
BCM_RXD1
+3.5V_ST
+3.5V_ST
R6223
4.7K
OPT
R6228 0
R6230 0
C6201
0.1uF
C6202
0.1uF
C6204
0.1uF
R6231 0
R6222
4.7K
OPT
C6200
0.33uF
R6229 0
IR_OUT
R6233
100
C6205
0.1uF
C6203
0.1uF
NEC_RXD
D6203
30V
CDS3C30GTH
D6202
30V
CDS3C30GTH
IC6200
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
R6234
100
R6235
0
OPT
A2.5V
BCM_TXD1
NEC_TXD
R6241
0
R6238
0
R6239
0
R6240
0
C6216
10pF
50V
OPT
C6217
10pF
50V
OPT
C6218
10pF
50V
OPT
C6215
10pF
50V
OPT
R6236
10K
OPT
JK6201
KJA-PH-1-0177
3
M3_DETECT
4
M4
5
M5_GND
1
M1
6
M6
JK6701
RS3-21001D1A
1
R1
TCT
2
R2
TD+
3
R3
TD-
4
R4
RD+
5
R5
RD-
6
R6
RCT
7
R7
.
8
R8
.
12
SHIELD
.
9
R9
.
11
R11
.
10
R10
.
L1
L1
Y_CTL
L2
L2
Y_Vin
L3
L3
G_CTL
L4
L4
G_Vin
Zener Diode is
COMMERCIAL
WIRELESS
close to wafer
IR & KEY
RS232C
Adjacent TX/RX differential pairs should be separated by more than 
15 mils to each other
ETHERNET CONNECT
5 mils trace width with 7 mils air gap on P/N pair.
Trace impedance : 100 ohm differenctial impedance to GND plane
10.02.19
62    100
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.
LEX9_HDMI_CN
CK-_HDMI3
R6332
22
GND
+5V_NORMAL
C6300
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
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
R6307
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
HDMI_RX1-
R6312
0
C6308
0.1uF
D0+_HDMI1
R6305
0
GND
R6315
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
R6330
0
SCL2_3.3V
D6302
5.5V
ESD
DDC_SDA_1
DDC_SCL_1
Q6300
KRC104S
E
B
C
D6300
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
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
ESD
D1+_HDMI3
D2+_HDMI3
R6304
0
R6335
OPT
0
D0-_HDMI2
Q6301
KRC104S
E
B
C
JP6305
JP6304
+3.3V_HDMI
HDMI_RX0+
C6302
0.1uF
16V
5V_HDMI_3
D2+_HDMI2
CK+_HDMI3
GND
+3.3V_HDMI
R6313
47K
C6315
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
OPT
5V_HDMI_2
JP6302
D2-_HDMI2
C6319
0.1uF
D1-_HDMI2
R6302
0
5V_HDMI_3
5V_HDMI_1
D1-_HDMI3
R6321
0
HDMI_RX0-
CK+_HDMI1
DDC_SDA_1
D6301
5.5V
ESD
DDC_SDA_2
D6304
A1
C
A2
+5V_NORMAL
CK+_HDMI2
D0-_HDMI3
C6303
0.1uF
16V
R6316
47K
CEC_REMOTE
CEC_REMOTE
C6312
0.1uF
16V
D6311
MMBD301LT1G
R6331
0
GND
DDC_SCL_3
D6303
5.5V
ESD
HDMI_HPD_1
SDA2_3.3V
DDC_SDA_3
GND
R6300
1K
R6311
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
16V
D1+_HDMI2
+1.8V_HDMI
GND
D2-_HDMI1
C6305
0.1uF
16V
5V_HPD2
R6314
47K
D2+_HDMI2
C6301
0.1uF
16V
D0+_HDMI2
DDC_SDA_2
JP6300
C6322
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
C6313
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
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
10.01.21
63     100
SIDE_UI_HW_PORT3
SIDE_UI_HW_PORT4
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.
LEX9_RGB/SPDIF/3DIR_CN
DSUB_R
D6405
5.6V
AMOTECH
RGB_DDC_SDA
+3.3V_NORMAL
D6410
ENKMC2838-T112
A1
C
A2
EDID_WP
RGB_HSYNC
C6413
100pF
50V
IC6401
M24C02-RMN6T
RGB_EDID_ST
0IMMR00014A
3
E2
2
E1
4
VSS
1
E0
5
SDA
6
SCL
7
WC
8
VCC
R6413
470K
RGB_DDC_SCL
D6406
5.6V
AMOTECH
+5V_NORMAL
RGB_VSYNC
R6419
0
PC_R_IN
IC6400
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
R6406
22
DSUB_B
PC_L_IN
+5V_NORMAL
R6416
2.7K
R6414
470K
R6418
0
DSUB_G
R6407
22
DSUB_DET
R
6
4
1
5
2
.
7
K
R6425
0
OPT
R6427
1K
R6426
10K
R6423
0
R6421
0
C6406
22pF
50V
OPT
C6407
22pF
50V
OPT
R6410
22
R6411
22
C6405
0.1uF
C6408
0.1uF 16V
C6409
18pF
50V
C6412
18pF
50V
R6420
22
R6417
22
R6424
100
R6422
10K
D6402
30V
ADUC30S03010L_AMODIODE 
D6404
30V
ADUC30S03010L_AMODIODE 
D6403
30V
D6407
30V
D6408
30V
D6409
5.6V
CDS3C05HDMI1
OPT
D6411
5.6V
CDS3C05HDMI1
OPT
D6412
5.6V
ADMC5M03200L_AMODIODE
OPT
R6412
75
R6409
75
R6408
75
C6411
1uF
25V
C6410
1uF
25V
JP6402
+3.3V_NORMAL
JP6401
JP6400
D6400
30V
OPT
SPDIF_OUT
C6400
0.1uF
16V
R6404
1K
IC6401-*1
R1EX24002ASAS0A
RGB_EDID_RENESAS
DEV
3
A2
2
A1
4
VSS
1
A0
5
SDA
6
SCL
7
WP
8
VCC
L6401 60-ohm
RGB_BEAD
L6403 60-ohm
RGB_BEAD
L6402 60-ohm
RGB_BEAD
L6401-*1
0
RGB_0OHM
L6402-*1
0
RGB_0OHM
L6403-*1
0
RGB_0OHM
JK6401
2F11TC1-EM52-4F
C
GND
B
VCC
A
VIN
4
SHIELD
JK6402
KJA-PH-0-0177
3
DETECT
4
L
5
GND
1
R
R6405
0
L6400
MLB-201209-0120P-N2
120-ohm
3D_SYNC_OUT
D6401
5.5V
C6402
10uF
10V
C6404
0.1uF
+5V_USB
USB_PWRON3
C6401
100uF
16V
R6401
4.7K
OPT
L6404
MLB-201209-0120P-N2
120-ohm
OPT
USB_PWRFLT3
R6402
2.7K
OPT
+3.3V_NORMAL
R6400
0
OPT
IC6402
AP2191SG-13
OPT
EAN60921001
3
IN_2
2
IN_1
4
EN
1
GND
5
FLG
6
OUT_1
7
OUT_2
8
NC
USB_PWRFLT3
USB_PWRON3
P6400
12507WR-03L
1
2
3
4
C6403
10pF
50V
JK6403
SLIM-15F-D-2
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
1
0
1
0
1
1
1
1
1
2
1
2
1
3
1
3
1
4
1
4
1
5
1
5
1
6
1
6
RGB AUDIO IN
RGB PC
RGB IN
BCM Reference
BCM Reference
64     100
10.01.21
SPDIF
3D IR
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.
LEX9_SIDE_GENDER_CN
AV_CVBS_DET
REAR_AV_R_IN
REAR_AV_CVBS
REAR_AV_L_IN
SC1_B
SC1_G
SC1_R
SCART1_DET
L6605
270nH
C6623
27pF
50V
L6604
270nH
C6615
27pF
50V
C6622
27pF
50V
C6616
27pF
50V
C6608
47pF
50V
0
R6603
D6605
5.6V
R6605
10K
+3.3V_NORMAL
C6603
100pF
50V
R6608
1K
C6611
100pF
50V
R6601
470K
D6606
5.6V
R6606
0
C6610
1uF
25V
R6607
0
R6602
470K
C6609
1uF
25V
D6607
5.6V
C6612
100pF
50V
C6621
27pF
50V
C6614
27pF
50V
L6603
270nH
R6613
1K
+3.3V_NORMAL
C6617
100pF
50V
D6614
5.6V
R6609
10K
D6615
5.5V
D6611
5.5V
D6612
5.5V
SIDE_COMP_INCM
C6626
0.1uF
R6618
36
JK6602
KJA-PH-1-0177
3
M3_DETECT
4
M4
5
M5_GND
1
M1
6
M6
JK6601
KJA-PH-1-0177
3
M3_DETECT
4
M4
5
M5_GND
1
M1
6
M6
D6604
5.5V
COMP2_Pb
COMP2_Y
COMP2_L_IN
COMP2_Pr
COMP2_DET
COMP2_R_IN
SCART1_Rout_N
SC1_ID
SCART1_Lout_P
DTV/MNT_V_OUT
DTV_ATV_SELECT
SCART1_Lout_N
SC1_FB
SCART1_Rout_P
L6601
270nH
SIDE_COMP_DET
+3.3V_NORMAL
C6606
27pF
50V
L6602
270nH
D6602
5.6V
L6600
270nH
R6604
1K
C6601
27pF
50V
JK6600
KJA-PH-1-0177
3
M3_DETECT
4
M4
5
M5_GND
1
M1
6
M6
SIDE_COMP_Pr
SIDE_COMP_Y
SIDE_COMP_Pb
D6603
5.5V
C6602
27pF
50V
R6600
10K
D6601
5.5V
D6600
5.5V
C6604
100pF
50V
C6605
27pF
50V
C6600
27pF
50V
C6607
27pF
50V
SC1_L_IN
SC1_R_IN
SIDE_AV_L_IN
R6617
1K
C6620
1uF
25V
SIDE_AV_R_IN
C6618
47pF
50V
R6614
10K
R6615
0
D6608
5.5V
0
R6612
C6624
100pF
50V
+3.3V_NORMAL
C6625
100pF
50V
SIDE_AV_CVBS
JK6603
KJA-PH-1-0177
3
M3_DETECT
4
M4
5
M5_GND
1
M1
6
M6
SIDE_AV_DET
D6613
5.6V
C6619
1uF
25V
D6610
5.6V
R6611
470K
C6613
100pF
50V
D6609
5.6V
R6610
470K
R6616
0
SIDE_HP_MUTE
HP_ROUT_N
HP_ROUT_P
HP_LOUT_P
HP_LOUT_N
HP_DET
R6619
1K
+3.3V_NORMAL
R6620
10K
OPT
R6621
1K
(New Item Developmen)
(New Item Developmen)
SIDE CVBS1 PHONE JACK
SIDE COMPONENT1 PHONE JACK
SIDE_GENDER of LEX9 for CHINA
Run Along SIDE_COMP_Y_IN,SIDE_COMP_Pr_IN,SIDE_COMP_Pb_IN Trace
Near J
10.01.21
66    100
COMPONENT2
SIDE COMPONENT2 PHONE JACK
(New Item Developmen)
SIDE CVBS2 PHONE JACK
(New Item Developmen)
SCART1
HEADPHONE
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