LG 47LEX8-CA / 55LEX8-CA (CHASSIS:LC03P) 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.
C8215
0.1uF
16V
OPT
R8280
10K
OPT
C8209
1000pF
50V
L8200
BLM18PG121SN1D
LED_B/LG_LOGO
R8213
10K
1%
C8207
0.1uF
LED_R/BUZZ
C8210
0.1uF
16V
R8224
100
100
R8209
100
100
L8201
BLM18PG121SN1D
D8205
5.6V
CDS3C05HDMI1
C8206
0.1uF
C8212
100pF
100pF
50V
R8225
100
100
D8201
5.6V
AMOTECH
C8214
1000pF
50V
1000pF
50V
OPT
L8203
BLM18PG121SN1D
R8210
100
100
R8226
100
100
KEY2
D8204
5.6V
CDS3C05HDMI1
IR
C8213
1000pF
50V
1000pF
50V
OPT
C8208
0.1uF
16V
R8227
1.5K
+3.5V_ST
D8200
5.6V
AMOTECH
C8211
1000pF
50V
D8206
5.6V
AMOTECH
R8276
1.5K
KEY1
+3.5V_ST
R8211
10K
1%
+3.3V_NORMAL
L8202
BLM18PG121SN1D
NEC_EEPROM_SCL
NEC_EEPROM_SDA
BCM_RX
+3.5V_ST
+3.5V_ST
R8223
4.7K
OPT
R8272 0
R8274 0
C8201
0.1uF
C8202
0.1uF
C8204
0.1uF
R8275 0
R8222
4.7K
OPT
C8200
0.33uF
R8273 0
R8277
100
100
C8205
0.1uF
0.1uF
C8203
0.1uF
NEC_RXD
D8203
30V
CDS3C30GTH
D8202
30V
CDS3C30GTH
IC8200
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
R8278
100
100
BCM_TX
NEC_TXD
232C_TXD
232C_RXD
A2.5V
D8212
5.6V
D8208
5.6V
D8209
5.6V
EPHY_RDP
EPHY_LINK
R8208
0
C8216
1000pF
50V
1000pF
50V
D8207
5.6V
EPHY_ACTIVITY
L8204
CIC21J501NE
EPHY_TDN
R8281
510
EPHY_TDP
D8211
5.6V
R8207
0
C8217
1000pF
D8210
5.6V
EPHY_RDN
P9702
P65-P01-11K9
1
2
3
4
5
6
7
8
9
10
11
12
13
D3.3V
R8282
510
R8284
0
0
R8285
0
0
R8286
0
0
R8283
0
0
C8845
10pF
OPT
C8846
10pF
OPT
C8847
10pF
OPT
C8848
10pF
OPT
P8200
12507WS-12L
1
2
3
4
5
6
7
8
9
10
11
12
13
Zener Diode is
close to wafer
IR & KEY
RS232C
Trace impedance : 100 ohm differenctial impedance to GND plane
Adjacent TX/RX differential pairs should be separated by more than
15 mils to each other
15 mils to each other
ETHERNET CONNECT
5 mils trace width with 7 mils air gap on P/N pair.
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.
09/10/xx
HDMI
COMMON
83 100
CK-_HDMI3
D2-_HDMI1
R8338
22
GND
+5V_NORMAL
C8300
0.1uF
0.1uF
+5V_NORMAL
HDMI_RX1+
DDC_SDA_1
5V_HPD1
R8326
22K
D1+_HDMI2
5V_HDMI_3
+3.3V_HDMI
GND
HDMI_HPD_1
HDMI_CEC
D0+_HDMI3
CEC_REMOTE
DDC_SDA_1
C8305
0.1uF
R8348
4.7K
OPT
D2+_HDMI1
Q8304
KRC104S
E
B
C
R8340
22
C8318
0.1uF
16V
0.1uF
16V
R8310
4.7K
4.7K
HDMI_CLK-
+3.3V_NORMAL
R8301
1K
CK+_HDMI1
GND
D8306
A1
C
A2
HDMI_CLK+
D1-_HDMI2
GND
R8309
4.7K
4.7K
HDMI_RX1-
D1+_HDMI1
C8309
0.1uF
R8306
0
GND
HDMI_HPD_2
C8322
0.1uF
D0+_HDMI2
DDC_SCL_3
R8304
0
+5V_NORMAL
R8313
47K
47K
R8336
0
SCL2_3.3V
D8303
5.5V
5.5V
OPT
DDC_SDA_2
DDC_SCL_2
GND
Q8300
KRC104S
E
B
C
+5V_NORMAL
D8300
5.5V
5.5V
OPT
D2-_HDMI2
HDMI_SDA
HDMI_HPD_3
CK+_HDMI3
DDC_SDA_1
CK-_HDMI2
BSS83
Q8308
S
B
D
G
R8346
0
OPT
JP8303
R8344
12K
Q8302
KRC104S
E
B
C
5V_HDMI_2
GND
D8302
5.5V
5.5V
OPT
GND
C8307
0.1uF
Q8305
KRC104S
E
B
C
DDC_SDA_3
Q8303
KRC104S
E
B
C
DDC_SCL_2
5V_HPD2
D0-_HDMI1
HDMI_RX2+
5V_HPD2
+1.8V_HDMI
C8324
0.1uF
C8321
0.1uF
D1+_HDMI3
R8312
47K
R8305
0
0
R8343
OPT
0
JP8304
D0-_HDMI3
Q8301
KRC104S
E
B
C
+3.3V_HDMI
D8305
5.5V
OPT
5.5V
OPT
HDMI_RX0+
C8303
0.1uF
16V
0.1uF
16V
DDC_SCL_1
5V_HDMI_1
5V_HDMI_3
D2+_HDMI3
CK+_HDMI3
5V_HDMI_1
+3.3V_HDMI
R8319
47K
C8316
0.1uF
16V
0.1uF
16V
R8314
47K
HDMI_HPD_3
DDC_SCL_3
D8309
A1
C
A2
C8302
0.1uF
16V
5V_HPD3
+3.5V_ST
HDMI_SCL
R8347
4.7K
4.7K
OPT
5V_HDMI_3
JP8302
D2-_HDMI3
C8320
0.1uF
D1-_HDMI3
R8302
1K
R8303
0
0
5V_HDMI_2
D1-_HDMI3
R8311
4.7K
4.7K
R8327
0
D0+_HDMI1
HDMI_RX0-
DDC_SDA_2
D8301
5.5V
5.5V
OPT
DDC_SDA_2
CK-_HDMI1
D8307
A1
C
A2
+5V_NORMAL
CK+_HDMI2
D0-_HDMI3
C8304
0.1uF
16V
0.1uF
16V
R8322
47K
CEC_REMOTE
C8313
0.1uF
16V
0.1uF
16V
D8312
MMBD301LT1G
R8337
0
GND
R8307
0
HDMI_HPD_1
D8304
5.5V
5.5V
OPT
HDMI_HPD_2
GND
SDA2_3.3V
DDC_SDA_3
5V_HPD1
R8300
1K
5V_HDMI_2
5V_HDMI_1
R8315
47K
D2-_HDMI3
D1-_HDMI1
C8317
0.1uF
0.1uF
16V
D1+_HDMI3
+1.8V_HDMI
C8306
0.1uF
16V
0.1uF
16V
5V_HPD3
D2+_HDMI2
C8301
0.1uF
16V
0.1uF
16V
DDC_SCL_1
D0+_HDMI3
DDC_SDA_3
JP8300
C8323
0.1uF
16V
0.1uF
16V
L8300
BLM18PG121SN1D
D2+_HDMI3
C8319
0.1uF
D0-_HDMI2
C8308
0.1uF
DDC_SCL_3
JP8301
HDMI_RX2-
DDC_SCL_2
CK-_HDMI3
R8335 0
OPT
R8345
0
OPT
0
OPT
R8328
0
OPT
C8314
0.1uF
16V
0.1uF
16V
C8315
0.1uF
C8310
0.1uF
C8311
0.1uF
IC8300
TDA19997
DEV
EAN60992401
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-
R8334
33
R8333
33
R8329
33
R8332
33
R8330
33
R8331
33
JK8300
SPG08-HU-001
14
NC
13
CEC
5
DATA1_SHIELD
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
20
JACK_GND
U1
U1
U2
U2
U3
U3
U4
U4
DDC_SCL_1
R8308
0
JP8305
D2+_HDMI2
D1+_HDMI2
D0+_HDMI2
CK+_HDMI2
CEC_REMOTE
CK-_HDMI2
D2-_HDMI2
D0-_HDMI2
D1-_HDMI2
GND
JK8302
SPG08-HU-001
14
NC
13
CEC
5
DATA1_SHIELD
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
20
JACK_GND
U1
U1
U2
U2
U3
U3
U4
U4
D2+_HDMI1
D1+_HDMI1
D0+_HDMI1
D1-_HDMI1
CEC_REMOTE
CK-_HDMI1
CK+_HDMI1
D2-_HDMI1
D0-_HDMI1
GND
USB_PWRFLT2
10:D4
R8318
4.7K
OPT
4.7K
OPT
L8301
MLB-201209-0120P-N2
120-ohm
R8320
2.7K
2.7K
USB_PWRFLT1
10:D4
C8329
10uF
10V
10uF
10V
USB_PWRON1
10:D4
C8327
0.1uF
R8339
2.7K
2.7K
L8302
MLB-201209-0120P-N2
120-ohm
R8321
0
+5V_USB
D8314
5.6V
D8313
5.6V
USB_PWRON2
10:D4
C8326
10uF
10V
10uF
10V
C8325
100uF
16V
R8317
0
+3.3V_NORMAL
+3.3V_NORMAL
C8328
100uF
16V
+5V_USB
C8330
0.1uF
R8323
4.7K
OPT
4.7K
OPT
IC8302
AP2191SG-13
DEV
EAN60921001
3
IN_2
2
IN_1
4
EN
1
GND
5
FLG
6
OUT_1
7
OUT_2
8
NC
IC8301
AP2191SG-13
DEV
EAN60921001
3
IN_2
2
IN_1
4
EN
1
GND
5
FLG
6
OUT_1
7
OUT_2
8
NC
USB_5V_POWER1
USB_5V_POWER1
USB_DM1
10:D4
USB_DP1
10:D4
D8315
5.6V
USB_DP2
10:D4
USB_DM2
10:D4
USB_5V_POWER2
D8316
5.6V
USB_5V_POWER2
R8316
100K
JK8301
YKF45-7060V
EAG39323102
HDMI_3_JALCO
14
NC
13
CE_REMOTE
5
D1_GND
20
BODY_SHIELD
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
R8325
3.3K
3.3K
R8324
3.3K
3.3K
* HDMI CEC
EDID Pull-up
UI_HW_PORT3
UI_HW_PORT1
HDMI2
Ready for TDA19997
HDMI3
HDMI1
UI_HW_PORT2
Place close
to TDA9996
to TDA9996
HDMI/USB COMBO JACK
HDMI/USB COMBO JACK
CHANGE USB_PWRFLT PULL-UP FROM 5V TO 3.3V
USB2
USB1 (DVR Ready)
THERMAL
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.
2009.06.18
NTP7000
BCM (EUROBBTV)
+1.8V_AMP
0.1uF
C8820
50V
IC8800
AP1117E18G-13
2
OUT
3
IN
1
ADJ/GND
C8810
1000pF
50V
C8840
0.47uF
50V
R8803
100
C8808
1000pF
50V
R8822
4.7K
+1.8V_AMP
C8800
0.1uF
16V
0.1uF
16V
+1.8V_AMP
Q8800
2SC3052
E
B
C
R8819
12
R8821
4.7K
R8809
3.3
3.3
C8826
10uF
35V
10uF
35V
R8811
10K
R8814
12
C8802
10uF
10V
10uF
10V
C8837
390pF
50V
L8801
BLM18PG121SN1D
C8806
100pF
50V
0.1uF
C8824
50V
AUD_LRCK
C8805
10uF
10V
OPT
AUD_LRCH
C8830
22000pF
50V
R8815
12
SCL1_3.3V
0.1uF
C8818
16V
D8802
100V
1N4148W
OPT
R8826
0
0
AUD_SCK
C8825
1uF
25V
0.1uF
C8807
16V
AMP_MUTE
C8832
0.01uF
50V
0.01uF
50V
SPK_L+
0.1uF
C8842
50V
AMP_RESET_N
0.1uF
C8831
50V
SPK_L-
R8818
12
D8801
100V
1N4148W
OPT
SPK_R+
R8806
3.3K
C8803
0.1uF
16V
0.1uF
16V
+3.3V_NORMAL
SPK_R-
C8823
22000pF
50V
R8812
12
+1.8V_AMP
SPK_L+
C8829
22000pF
50V
AUD_MASTER_CLK
C8839
0.47uF
50V
R8800
1
R8827
0
0
L8802
BLM18PG121SN1D
+24V_AMP
SPK_R+
+3.5V_ST
C8838
390pF
50V
R8823
4.7K
L8800
BLM18PG121SN1D
R8805
100
D8803
100V
1N4148W
OPT
C8815
10uF
10uF
10V
OPT
0.1uF
C8843
50V
0.1uF
C8844
50V
+3.3V_NORMAL
R8808
100
R8801
100
POWER_DET
R8813
12
R8816
12
C8801
10uF
10V
OPT
0.1uF
C8833
50V
R8817
12
C8835
390pF
50V
R8807
0
0
OPT
0.1uF
C8841
50V
R8824
0
0
R8802
100
SDA1_3.3V
R8804
100
C8804
0.1uF
16V
D8800
100V
1N4148W
OPT
R8810
10K
C8821
1000pF
50V
1000pF
50V
C8828
1uF
25V
C8834
10uF
35V
10uF
35V
0.1uF
C8811
C8816
1uF
25V
+24V_AMP
C8822
1uF
25V
R8820
4.7K
C8819
22000pF
50V
SPK_R-
R8825
0
0
SPK_L-
C8836
390pF
50V
IC8801
NTP-7000
EAN60969601
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
15
DGND_2
16
DVDD
17
SDATA
18
WCK
19
BCK
20
SDA
21
SCL
22
MONITOR0
23
MONITOR1
24
MONITOR2
25
/FAULT
26
VDR2B
27
BST2B
28
PGND2B_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
43
VDR1B
44
BST1B
45
PGND1B_1
46
PGND1B_2
47
OUT1B_1
48
OUT1B_2
49
PVDD1B_1
50
PVDD1B_2
51
PVDD1A_1
52
PVDD1A_2
53
OUT1A_1
54
OUT1A_2
55
PGND1A_1
56
PGND1A_2
57
EP_PAD
+24V
L8803
MLB-201209-0120P-N2
+24V_AMP
0.1uF
C8827
50V
L8805
AD-9060
15uH
2S
1S
1F
2F
L8804
AD-9060
15uH
2S
1S
1F
2F
C8813
47pF
50V
47pF
50V
C8814
47pF
50V
47pF
50V
C8817
47pF
50V
47pF
50V
AMP_MUTE1
C8809
15pF
50V
15pF
50V
C8812
15pF
50V
15pF
50V
P8800
WAFER-STRAIGHT
1
2
3
4
38
KIM JONG HYUN
120 mA
SPEAKER_L
SPEAKER_R
Vd=1.4V
CCFL = 20V
Edge_LED 32~47 Inch = 20V
55 Inch & IOP Module = 24V