LG 55LEX8-ZA (CHASSIS:LD03S) Service Manual ▷ View online
0 . 1 u F
16V
OPT
C8215
10K
OPT
R8280
1000pF
50V
C8209
BLM18PG121SN1D
L8200
LED_B/LG_LOGO
10K
1%
R8213
0 . 1 u F
C8207
LED_R/BUZZ
0 . 1 u F
16V
C8210
100
R8224
100
R8209
BLM18PG121SN1D
L8201
CDS3C05HDMI1
5.6V
5.6V
D8205
0 . 1 u F
C8206
100pF
50V
C8212
100
R8225
AMOTECH
5.6V
D8201
1000pF
50V
50V
OPT
C8214
BLM18PG121SN1D
L8203
100
R8210
100
R8226
KEY2
CDS3C05HDMI1
5.6V
5.6V
D8204
IR
1000pF
50V
50V
OPT
C8213
0 . 1 u F
16V
C8208
1.5K
R8227
+3.5V_ST
AMOTECH
5.6V
D8200
1000pF
50V
C8211
AMOTECH
5.6V
D8206
1.5K
R8276
KEY1
+3.5V_ST
10K
1%
R8211
+3.3V_NORMAL
BLM18PG121SN1D
L8202
NEC_EEPROM_SCL
NEC_EEPROM_SDA
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.
BCM_RX
+3.5V_ST
+3.5V_ST
4.7K
OPT
R8223
0
R8272
0
R8274
0 . 1 u F
C8201
0 . 1 u F
C8202
0 . 1 u F
C8204
0
R8275
4.7K
OPT
R8222
0 . 3 3 u F
C8200
0
R8273
100
R8277
0 . 1 u F
C8205
0 . 1 u F
C8203
NEC_RXD
CDS3C30GTH
30V
30V
D8203
CDS3C30GTH
30V
30V
D8202
EAN41348201
MAX3232CDR
IC8200
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
100
R8278
BCM_TX
NEC_TXD
232C_TXD
232C_RXD
A2.5V
5.6V
D8212
5.6V
D8208
5.6V
D8209
EPHY_RDP
EPHY_LINK
0
R8208
1000pF
50V
50V
C8216
5.6V
D8207
EPHY_ACTIVITY
CIC21J501NE
L8204
EPHY_TDN
510
R8281
EPHY_TDP
5.6V
D8211
0
R8207
1000pF
C8217
5.6V
D8210
EPHY_RDN
P65-P01-11K9
P9702
1
2
3
4
5
6
7
8
9
10
11
12
13
D3.3V
510
R8282
0
R8284
0
R8285
0
R8286
0
R8283
10pF
C8845
OPT
10pF
C8846
OPT
10pF
C8847
OPT
10pF
C8848
OPT
12507WS-12L
P8200
1
2
3
4
5
6
7
8
9
10
11
12
13
Z e n e r D i o d e i s
c l o s e t o w a f e r
IR & KEY
RS232C
T r a c e i m p e d a n c e : 1 0 0 o h m d i f f e r e n c t i a l i m p e d a n c e t o G N D p l a n e
A d j a c e n t T X / R X d i f f e r e n t i a l p a i r s s h o u l d b e s e p a r a t e d b y m o r e t h a n
1 5 m i l s t o e a c h o t h e r
ETHERNET CONNECT
5 m i l s t r a c e w i d t h w i t h 7 m i l s a i r g a p o n P / N p a i r .
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.
CK-_HDMI3
D2-_HDMI1
22
R8338
GND
+5V_NORMAL
0 . 1 u F
C8300
+5V_NORMAL
HDMI_RX1+
DDC_SDA_1
5V_HPD1
22K
R8326
D1+_HDMI2
5V_HDMI_3
+3.3V_HDMI
GND
HDMI_HPD_1
HDMI_CEC
D0+_HDMI3
CEC_REMOTE
DDC_SDA_1
0.1uF
C8305
4.7K
OPT
R8348
D2+_HDMI1
KRC104S
Q8304
E
B
C
22
R8340
0 . 1 u F
16V
16V
C8318
4.7K
R8310
HDMI_CLK-
+3.3V_NORMAL
1K
R8301
CK+_HDMI1
GND
HDMI_CLK+
D1-_HDMI2
GND
4.7K
R8309
HDMI_RX1-
D1+_HDMI1
0.1uF
C8309
0
R8306
GND
HDMI_HPD_2
0 . 1 u F
C8322
D0+_HDMI2
DDC_SCL_3
0
R8304
+5V_NORMAL
47K
R8313
0
R8336
SCL2_3.3V
5.5V
OPT
D8303
DDC_SDA_2
DDC_SCL_2
GND
KRC104S
Q8300
E
B
C
+5V_NORMAL
5.5V
OPT
D8300
D2-_HDMI2
HDMI_SDA
HDMI_HPD_3
CK+_HDMI3
DDC_SDA_1
CK-_HDMI2
BSS83
Q8308
S
B
D
G
0
OPT
R8346
JP8303
12K
R8344
KRC104S
Q8302
E
B
C
5V_HDMI_2
GND
5.5V
OPT
D8302
GND
0.1uF
C8307
KRC104S
Q8305
E
B
C
DDC_SDA_3
KRC104S
Q8303
E
B
C
DDC_SCL_2
5V_HPD2
D0-_HDMI1
HDMI_RX2+
5V_HPD2
+1.8V_HDMI
0 . 1 u F
C8324
0 . 1 u F
C8321
D1+_HDMI3
47K
R8312
0
R8305
0
OPT
R8343
JP8304
D0-_HDMI3
KRC104S
Q8301
E
B
C
+3.3V_HDMI
5.5V
OPT
D8305
HDMI_RX0+
0 . 1 u F
16V
16V
C8303
DDC_SCL_1
5V_HDMI_1
5V_HDMI_3
D2+_HDMI3
CK+_HDMI3
5V_HDMI_1
+3.3V_HDMI
47K
R8319
0 . 1 u F
16V
16V
C8316
47K
R8314
HDMI_HPD_3
DDC_SCL_3
0 . 1 u F
16V
C8302
5V_HPD3
+3.5V_ST
HDMI_SCL
4.7K
OPT
R8347
5V_HDMI_3
JP8302
D2-_HDMI3
0 . 1 u F
C8320
D1-_HDMI3
1K
R8302
0
R8303
5V_HDMI_2
D1-_HDMI3
4.7K
R8311
0
R8327
D0+_HDMI1
HDMI_RX0-
DDC_SDA_2
5.5V
OPT
D8301
DDC_SDA_2
CK-_HDMI1
+5V_NORMAL
CK+_HDMI2
D0-_HDMI3
0 . 1 u F
16V
16V
C8304
47K
R8322
CEC_REMOTE
0 . 1 u F
16V
16V
C8313
MMBD301LT1G
D8312
0
R8337
GND
0
R8307
HDMI_HPD_1
5.5V
OPT
D8304
HDMI_HPD_2
GND
SDA2_3.3V
DDC_SDA_3
5V_HPD1
1K
R8300
5V_HDMI_2
5V_HDMI_1
47K
R8315
D2-_HDMI3
D1-_HDMI1
0 . 1 u F
16V
C8317
D1+_HDMI3
+1.8V_HDMI
0 . 1 u F
16V
16V
C8306
5V_HPD3
D2+_HDMI2
0 . 1 u F
16V
16V
C8301
DDC_SCL_1
D0+_HDMI3
DDC_SDA_3
JP8300
0 . 1 u F
16V
16V
C8323
BLM18PG121SN1D
L8300
D2+_HDMI3
0 . 1 u F
C8319
D0-_HDMI2
0.1uF
C8308
DDC_SCL_3
JP8301
HDMI_RX2-
DDC_SCL_2
CK-_HDMI3
0
R8335
OPT
0
R8345
OPT
0
R8328
OPT
0 . 1 u F
16V
16V
C8314
0.1uF
C8315
0.1uF
C8310
0.1uF
C8311
TDA19997
EAN60992401
IC8300
DEV
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-
33
R8334
33
R8333
33
R8329
33
R8332
33
R8330
33
R8331
SPG08-HU-001
JK8300
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
0
R8308
JP8305
D2+_HDMI2
D1+_HDMI2
D0+_HDMI2
CK+_HDMI2
CEC_REMOTE
CK-_HDMI2
D2-_HDMI2
D0-_HDMI2
D1-_HDMI2
GND
SPG08-HU-001
JK8302
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
4.7K
OPT
R8318
MLB-201209-0120P-N2
120-ohm
L8301
2.7K
R8320
USB_PWRFLT1
10:D4
10uF
10V
10V
C8329
USB_PWRON1
10:D4
0 . 1 u F
C8327
2.7K
R8339
MLB-201209-0120P-N2
120-ohm
L8302
0
R8321
+5V_USB
5.6V
D8314
5.6V
D8313
USB_PWRON2
10:D4
10uF
10V
10V
C8326
100uF
16V
16V
C8325
0
R8317
+3.3V_NORMAL
+3.3V_NORMAL
100uF
16V
16V
C8328
+5V_USB
0 . 1 u F
C8330
4.7K
OPT
R8323
AP2191SG-13
EAN60921001
DEV
IC8302
3 IN_2
2 IN_1
4 EN
1 GND
5
FLG
6
OUT_1
7
OUT_2
8
NC
AP2191SG-13
EAN60921001
DEV
IC8301
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
5.6V
D8315
USB_DP2
10:D4
USB_DM2
10:D4
USB_5V_POWER2
5.6V
D8316
USB_5V_POWER2
100K
R8316
YKF45-7060V
EAG39323102
JK8301
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
3.3K
R8325
3.3K
R8324
D8309
A1
C
A2
D8306
A1
C
A2
D8307
A1
C
A2
* HDMI CEC
E D I D P u l l - u p
UI_HW_PORT3
UI_HW_PORT1
HDMI2
R e a d y f o r T D A 1 9 9 9 7
HDMI3
HDMI1
UI_HW_PORT2
P l a c e c l o s e
to TDA9996
HDMI/USB COMBO JACK
HDMI/USB COMBO JACK
CHANGE USB_PWRFLT PULL-UP FROM 5V TO 3.3V
USB2
USB1 (DVR Ready)
0 9 / 1 0 / x x
HDMI
8 3 1 0 0
COMMON
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.
+1.8V_AMP
0 . 1 u F
50V
C8820
AP1117E18G-13
IC8800
2
OUT
3
IN
1
ADJ/GND
1000pF
50V
C8810
0 . 4 7 u F
50V
C8840
100
R8803
1000pF
50V
C8808
4.7K
R8822
+1.8V_AMP
0 . 1 u F
16V
16V
C8800
+1.8V_AMP
2SC3052
Q8800
E
B
C
12
R8819
4.7K
R8821
3 . 3
R8809
10uF
35V
35V
C8826
10K
R8811
12
R8814
10uF
10V
10V
C8802
390pF
50V
C8837
BLM18PG121SN1D
L8801
100pF
50V
C8806
0 . 1 u F
50V
50V
C8824
AUD_LRCK
10uF
10V
OPT
C8805
C8805
AUD_LRCH
22000pF
50V
C8830
12
R8815
SCL1_3.3V
0 . 1 u F
16V
C8818
1N4148W
100V
OPT
D8802
0
R8826
AUD_SCK
1uF
25V
C8825
0 . 1 u F
16V
C8807
AMP_MUTE
0 . 0 1 u F
50V
50V
C8832
SPK_L+
0 . 1 u F
50V
C8842
AMP_RESET_N
0 . 1 u F
50V
50V
C8831
SPK_L-
12
R8818
1N4148W
100V
OPT
D8801
SPK_R+
3.3K
R8806
0 . 1 u F
16V
16V
C8803
+3.3V_NORMAL
SPK_R-
22000pF
50V
C8823
12
R8812
+1.8V_AMP
SPK_L+
22000pF
50V
C8829
AUD_MASTER_CLK
0 . 4 7 u F
50V
C8839
1
R8800
0
R8827
BLM18PG121SN1D
L8802
+24V_AMP
SPK_R+
+3.5V_ST
390pF
50V
C8838
4.7K
R8823
BLM18PG121SN1D
L8800
100
R8805
1N4148W
100V
OPT
D8803
10uF
10V
OPT
C8815
0 . 1 u F
50V
C8843
0 . 1 u F
50V
50V
C8844
+3.3V_NORMAL
100
R8808
100
R8801
POWER_DET
12
R8813
12
R8816
10uF
10V
OPT
C8801
0 . 1 u F
50V
50V
C8833
12
R8817
390pF
50V
C8835
0
OPT
R8807
0 . 1 u F
50V
C8841
0
R8824
100
R8802
SDA1_3.3V
100
R8804
0 . 1 u F
16V
C8804
1N4148W
100V
OPT
D8800
10K
R8810
1000pF
50V
50V
C8821
1uF
25V
C8828
10uF
35V
35V
C8834
0 . 1 u F
C8811
1uF
25V
C8816
+24V_AMP
1uF
25V
C8822
4.7K
R8820
22000pF
50V
C8819
SPK_R-
0
R8825
SPK_L-
390pF
50V
C8836
THERMAL
NTP-7000
EAN60969601
IC8801
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
MLB-201209-0120P-N2
L8803
+24V_AMP
0 . 1 u F
50V
C8827
AD-9060
15uH
L8805
2S
1S
1F
2F
AD-9060
15uH
L8804
2S
1S
1F
2F
47pF
50V
50V
C8813
47pF
50V
50V
C8814
47pF
50V
50V
C8817
AMP_MUTE1
15pF
50V
50V
C8809
15pF
50V
50V
C8812
WAFER-STRAIGHT
P8800
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
5 5 I n c h & I O P M o d u l e = 2 4 V
2 0 0 9 . 0 6 . 1 8
NTP7000
BCM (EUROBBTV)
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