LG 42LT760H-TA (CHASSIS:LB3AF) 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.
1N4148W
100V
OPT
D5402
100
R5402
0 . 1 u F
50V
50V
C5421
12
R5411
0 . 4 7 u F
50V
C5434
33pF
50V
50V
C5408
12
R5407
1000pF
50V
C5403
100
R5405
3 . 3
OPT
R5406
12
R5413
100
R5403
12
R5414
0 . 1 u F
50V
50V
C5419
1uF
25V
25V
C5427
22000pF
50V
C5425
22000pF
50V
C5416
10uF
35V
35V
C5422
0 . 1 u F
50V
C5436
+3.3V_NORMAL
22000pF
50V
50V
C5426
NRS6045T100MMGK
10.0uH
L5402
12
R5412
10uF
35V
C5423
0 . 1 u F
50V
C5400
390pF
50V
C5432
0 . 1 u F
50V
C5437
0 . 1 u F
50V
50V
C5418
12
R5409
0 . 1 u F
50V
C5401
SPK_L-
100pF
50V
C5402
33pF
50V
50V
C5406
10uF
10V
C5405
1N4148W
100V
OPT
D5400
1000pF
50V
C5404
390pF
50V
C5430
390pF
50V
C5429
NRS6045T100MMGK
10.0uH
L5405
SPK_R-
+24V_AMP
NRS6045T100MMGK
10.0uH
L5403
0 . 1 u F
16V
C5411
AUD_MASTER_CLK
0 . 1 u F
50V
C5438
SPK_R-
AUD_SCK
1N4148W
100V
OPT
D5401
3.3K
R5404
AUD_LRCK
1000pF
50V
C5415
10K
R5401
I2C_SDA1
0 . 1 u F
16V
C5413
AUD_LRCH
BLM18PG121SN1D
L5401
+24V_AMP
SPK_R+
390pF
50V
C5431
+24V_AMP
1N4148W
100V
OPT
D5403
10uF
10V
10V
C5414
OPT
12
R5408
1uF
25V
25V
C5433
NRS6045T100MMGK
10.0uH
L5404
SPK_L-
0 . 4 7 u F
50V
C5435
1uF
25V
25V
C5428
I2C_SCL1
10uF
10V
C5409
SPK_L+
WAFER-ANGLE
P5400
1
2
3
4
MAIN_AMP_MUTE
0 . 1 u F
50V
50V
C5439
22000pF
50V
C5417
10K
R5400
12
R5410
SPK_R+
0 . 1 u F
16V
C5412
+24V
10uF
10V
OPT
C5410
0 . 1 u F
50V
50V
C5420
SPK_L+
0 . 0 1 u F
50V
50V
OPT
C5424
MMBT3904(NXP)
Q5400
E
B
C
4 . 7 u F
10V
C5407
5.1K
R5418
5.1K
R5415
5.1K
R5416
5.1K
R5417
MAIN_AMP_RESET
33
R5421
10K
R5422
THERMAL
NTP-7500L
IC5400
1
AGND_PLL
2
AVDD_PLL
3
DVDD_PLL
4
LF
5
DGND_PLL
6
GND_1
7
DGND
8
DVDD
9
SDATA
10
WCK
11
BCK
12
SDA
13
SCL
14
/FAULT
15
MONITOR0
16
MONITOR1
17
MONITOR2
18
BST2B
19
PGND2B
20
OUT2B_1
21
OUT2B_2
22
PVDD2_1
23
PVDD2_2
24
PVDD2_3
25
OUT2A_1
26
OUT2A_2
27
PGND2A
28
BST2A
29
VDR2
30
AGND
31
VCC_5
32
VDR1
33
BST1B
34
PGND1B
35
OUT1B_1
36
OUT1B_2
37
PVDD1_1
38
PVDD1_2
39
PVDD1_3
40
OUT1A_1
41
OUT1A_2
42
PGND1A
43
BST1A
44
/RESET
45
AD
46
GND_IO
47
CLK_I
48
VDD_IO
49
[EP]
+3.5V_ST
UBW2012-121F
L5400
SPEAKER_R
DUAL COMPONENT
Q1801
0x54
SPEAKER_L
1ST : 0TRIY80001A 2ND : 0TR387500AA
54
AMP_NEO
2 0 1 1 . 0 4 . 3 0
From SOC
xxLT760H-UA
MT5369_TS_OUT[0-7]
MT5369_TS_CLK
47
R908
CI
CI_IN_TS_CLK
12pF
50V
OPT
50V
OPT
C902
MT5369_MCLKI
CI_IN_TS_SYNC
CI_TS_CLK
MT5369_MISTRT
47
R917
CI
MT5369_MIVAL_ERR
CI_MDI[0-7]
CI_IN_TS_VAL
CI_TS_SYNC
CI_TS_DATA[0-7]
47
R916
CI
MT5369_TS_VAL
47
R907
CI
47
AR900
CI
CI_TS_VAL
47
R915
CI
MT5369_TS_SYNC
MT5369_TS_IN[0-7]
47
R909
CI
12pF
50V
OPT
50V
OPT
C900
47
AR902
CI
47
AR903
CI
CI_A_ADDR[8]
/PCM_IOWR
CI_TS_CLK
10K
R929
CI
CI_IN_TS_SYNC
CI_A_ADDR[7]
+5V_CI_ON
CI_A_ADDR[2]
CI_A_ADDR[10]
/PCM_OE
22
R912
CI
/CI_CD2
10K
OPT
OPT
R923
CI_TS_DATA[0]
/CI_CD1
PCM_RST
0
OPT
R938
CI_A_ADDR[0]
10uF
10V
10V
C905
CI
0
R925
CI
0 . 1 u F
C904
CI
22
R940
CI
/CI_CD1
22
R922
CI
PCM_INPACK
/PCM_CE1
10K
R936
CI
CI_A_ADDR[5]
100
R928
CI
CI_A_ADDR[14]
CI_TS_DATA[1]
22
R921
CI
10K
OPT
R924
CI_A_DATA[0-7]
22
R941
CI
0 . 1 u F
16V
C907
CI
/CI_CD2
CI_MDI[0-7]
CI_VS1
/PCM_IORD
CI_A_ADDR[11]
+5V_CI_ON
+3.3V_NORMAL
10K
OPT
R934
/PCM_CE1
/PCM_IOWR
CI_IN_TS_VAL
CI_IN_TS_CLK
/PCM_WE
22 OPT
R920
CI_TS_DATA[3]
/PCM_WE
CI_A_ADDR[6]
CI_TS_SYNC
22
R942
CI
CI_TS_DATA[2]
+5V_CI_ON
10K
R910
CI
CI_TS_DATA[4]
22
R911
CI
10K
OPT
OPT
R933
100
R927
CI
22
OPT
R932
CI_TS_DATA[5]
PCM_RST
CI_TS_VAL
0
OPT
R926
0 . 1 u F
C906
CI
CI_A_ADDR[9]
22
R939
CI
CI_A_ADDR[1]
/PCM_CE2
10K
OPT
R937
/PCM_IORD
CI_A_ADDR[4]
CI_A_ADDR[13]
/PCM_OE
/PCM_IRQA
CI_A_ADDR[3]
10K
R914
CI
/PCM_A_REG
CI_A_ADDR[12]
+3.3V_NORMAL
CI_TS_DATA[7]
10K
R935
CI
/PCM_WAIT
22
OPT
R931
10K
OPT
OPT
R906
CI_TS_DATA[6]
CI_DATA[0-7]
CI_A_DATA[0-7]
CI_A_ADDR[0-14]
CI_ADDR[0-14]
/PCM_WAIT
PCM_INPACK
/PCM_IRQA
CI_VS1
/PCM_REG
/PCM_CE2
/PCM_A_REG
/PCM_REG
CI_A_VS1
CI_VS1
0
AR906
CI
0
AR907
CI
0
AR904
CI
0
AR908
CI
0
AR905
CI
0
AR909
CI
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.
47K
R919
CI
47K
R930
CI
47K
R918
CI
47K
R913
CI
47
AR901
CI
10067972-050LF
JK900
CI
G1
G2
57
21
52
16
10
47
41
5
36
59
23
45
54
18
49
43
13
7
38
2
25
56
20
51
15
9
46
40
4
35
58
22
53
17
11
48
42
12
6
37
1
24
55
19
50
44
14
8
39
3
26
60
27
61
28
62
29
63
30
64
31
32
33
34
65
66
67
68
69
MT5369_TS_IN[5]
CI_TS_DATA[5]
MT5369_TS_IN[3]
CI_TS_DATA[6]
CI_TS_DATA[1]
MT5369_TS_IN[2]
CI_TS_DATA[2]
CI_TS_DATA[3]
MT5369_TS_IN[0]
MT5369_TS_IN[4]
MT5369_TS_IN[1]
CI_TS_DATA[0]
CI_TS_DATA[7]
MT5369_TS_IN[7]
MT5369_TS_IN[6]
CI_TS_DATA[4]
CI_MDI[1]
CI_MDI[0]
MT5369_TS_OUT[0]
MT5369_TS_OUT[1]
MT5369_TS_OUT[2]
MT5369_TS_OUT[3]
CI_MDI[3]
CI_MDI[2]
MT5369_TS_OUT[4]
MT5369_TS_OUT[5]
MT5369_TS_OUT[6]
MT5369_TS_OUT[7]
CI_MDI[7]
CI_MDI[6]
CI_MDI[5]
CI_MDI[4]
CI_A_DATA[0]
CI_MDI[6]
CI_MDI[3]
CI_MDI[7]
CI_MDI[5]
CI_MDI[2]
CI_MDI[4]
CI_MDI[1]
CI_MDI[0]
CI_A_DATA[2]
CI_A_DATA[1]
CI_A_DATA[6]
CI_A_DATA[7]
CI_A_DATA[5]
CI_A_DATA[3]
CI_A_DATA[4]
CI_A_DATA[0]
CI_A_DATA[1]
CI_A_DATA[2]
CI_A_DATA[3]
CI_A_DATA[4]
CI_A_DATA[5]
CI_A_DATA[6]
CI_A_DATA[7]
CI_DATA[7]
CI_DATA[6]
CI_DATA[5]
CI_DATA[4]
CI_DATA[3]
CI_DATA[2]
CI_DATA[1]
CI_DATA[0]
CI_A_ADDR[0]
CI_A_ADDR[1]
CI_A_ADDR[2]
CI_A_ADDR[3]
CI_A_ADDR[4]
CI_A_ADDR[5]
CI_A_ADDR[6]
CI_A_ADDR[7]
CI_A_ADDR[8]
CI_A_ADDR[9]
CI_A_ADDR[10]
CI_A_ADDR[11]
CI_A_ADDR[12]
CI_A_ADDR[13]
CI_A_ADDR[14]
CI_ADDR[14]
CI_ADDR[13]
CI_ADDR[12]
CI_ADDR[11]
CI_ADDR[10]
CI_ADDR[9]
CI_ADDR[8]
CI_ADDR[7]
CI_ADDR[6]
CI_ADDR[5]
CI_ADDR[4]
CI_ADDR[3]
CI_ADDR[2]
CI_ADDR[1]
CI_ADDR[0]
13
2 0 1 1 . 0 9 . 2 6
MID_MAIN_CI
C l o s e t o C I S l o t
CI TS INPUT
C l o s e t o M T 5 3 6 9
C l o s e t o M T 5 3 6 9
C l o s e t o C I S l o t
C l o s e t o C I S l o t
CI TS OUTPUT
C l o s e t o M T 5 3 6 9
CI DETECT
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.
DDC_SDA_2_JACK
100
R3314
5V_HDMI_3_JACK
CEC_REMOTE
D1-_HDMI2_JACK
5V_HDMI_2_JACK
47K
R3324
1K
R3316
1K
R3317
HDMI_HPD_4_JACK
0 . 1 u F
16V
C3303
D2+_HDMI2_JACK
CK-_HDMI2_JACK
D2+_HDMI4_JACK
47K
R3326
100K
R3313
0 . 1 u F
16V
C3301
47K
R3339
D0-_HDMI4_JACK
47K
R3337
DDC_SCL_2_JACK
D2-_HDMI4_JACK
100K
R3307
5V_HDMI_2_JACK
HDMI_HPD_2_JACK
5V_HDMI_4_JACK
1K
R3311
+5V_NORMAL
0 . 1 u F
16V
C3302
47K
R3338
DDC_SCL_4_JACK
5V_HDMI_4_JACK
DDC_SDA_2_JACK
D0+_HDMI4_JACK
CK+_HDMI2_JACK
4.7K
R3318
100
R3308
D1+_HDMI2_JACK
100
R3309
47K
R3340
D0-_HDMI2_JACK
DDC_SDA_3_JACK
CK-_HDMI4_JACK
D0+_HDMI2_JACK
CK+_HDMI4_JACK
DDC_SCL_2_JACK
1K
R3310
DDC_SCL_4_JACK
DDC_SCL_3_JACK
D2-_HDMI2_JACK
100
R3315
+5V_NORMAL
DDC_SDA_4_JACK
D1+_HDMI4_JACK
DDC_SDA_4_JACK
D1-_HDMI4_JACK
+5V_NORMAL
CEC_REMOTE
4.7K
R3312
MMBT3904(NXP)
Q3301
E
B
C
MMBT3904(NXP)
Q3302
E
B
C
5V_HDMI_3_JACK
D0-_HDMI3_JACK
MMBT3904(NXP)
Q3303
E
B
C
CK+_HDMI3_JACK
CEC_REMOTE
HDMI_HPD_3_JACK
D2-_HDMI3_JACK
100
R3329
DDC_SDA_3_JACK
D1+_HDMI3_JACK
100K
R3327
4.7K
R3336
D1-_HDMI3_JACK
100
R3328
D2+_HDMI3_JACK
DDC_SCL_3_JACK
D0+_HDMI3_JACK
CK-_HDMI3_JACK
1K
R3331
1K
R3330
120K
R3303
CEC_REMOTE
27K
R3302
RUE003N02
Q3300
HDMI_CEC_FET_ROHM
S
D
G
+3.5V_ST
HDMI_CEC
BAT54_SUZHO
D3304
YKF45-7058V
JK3301
14
NC
13
CEC
5
DATA1_SHIELD
20
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
YKF45-7058V
JK3302
14
NC
13
CEC
5
DATA1_SHIELD
20
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
RSD-105156-100
JK3303
14
RESERVED
13
CEC
5
TMDS_DATA1_SHIELD
20
BODY_SHIELD
12
TMDS_CLK-
11
TMDS_CLK_SHIELD
2
TMDS_DATA2_SHIELD
19
HOT_PLUG_DETECT
18
VDD[+5V]
10
TMDS_CLK+
4
TMDS_DATA1+
1
TMDS_DATA2+
17
DDC/CEC_GND
9
TMDS_DATA0-
8
TMDS_DATA0_SHIELD
3
TMDS_DATA2-
16
SDA
7
TMDS_DATA0+
6
TMDS_DATA1-
15
SCL
MMBD6100
D3302
D3302
A2
C
A1
MMBD6100
D3301
D3301
A2
C
A1
MMBD6100
D3303
D3303
A2
C
A1
SI1012CR-T1-GE3
Q3300-*1
HDMI_CEC_FET_VISHAY
S
D
G
HDMI_ARC
0
R3300
0
OPT
R3341
IR_OUT_HDMI1
0
R3342
IR_OUT_HDMI2
0
R3343
IR_OUT_HDMI3
4.7K
R3345
OPT
4.7K
OPT
R3346
4.7K
OPT
R3347
HDMI_HPD_2_JACK
+3.5V_ST
0 . 1 u F
C3306
HPD_CTL
0
R3377
0
R3375
OPT
NLASB3157DFT2G
IC3301
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
0
R3376
NEC_HPD
MTK_HPD
UI : HDMI2
UI : HDMI3
UI : HDMI1
33
HDMI 4
2 0 1 1 . 0 9 . 2 9
For CEC
From HDMI Connector
To NEC
xxLT760H-UA
R3300 MTK Recommend : 0 Ohm
L
MTK_HPD
B 1 - A
HPD_CTLCONNECTION
H
B 0 - A
HPD SWITCH
NEC_HPD
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.
+3.3V_NORMAL
2.7K
R3641
30V
D3615
OPT
18pF
50V
C3633
22
R3644
DSUB_B+
2.7K
OPT
R3620
+3.3V_NORMAL
DSUB_G+
RGB_DDC_SCL
DSUB_DET
DSUB_R+
22
R3643
10K
R3646
0 . 1 u F
16V
C3615
RGB_DDC_SDA
SPDIF_OUT
33
R3615
18pF
50V
C3634
+5V_NORMAL
DSUB_HSYNC
DSUB_VSYNC
30V
D3616
OPT
2.7K
R3642
RGB_5V
RGB_5V
M24C02-RMN6T
IC3600
3
E2
2
E1
4
VSS
1
E0
5
SDA
6
SCL
7
WC
8
VCC
MMBD6100
D3620
A2
C
A1
5.6V
D3623
ADUC 5S 02 0R5L
5.5V
5.5V
OPT
D3622
ADUC 5S 02 0R5L
5.5V
OPT
D3621
ADUC 5S 02 0R5L
5.5V
OPT
D3613
SPG09-DB-010
JK3603
1
RED
2
GREEN
3
BLUE
4
GND_1
5
DDC_GND
6
RED_GND
7
GREEN_GND
8
BLUE_GND
9
NC
10
SYNC_GND
11
GND_2
12
DDC_DATA
13
H_SYNC
14
V_SYNC
15
DDC_CLOCK
16
SHILED
Fiber Optic
2F01TC1-CLM97-4F
JK3602
3
VIN
2
VCC
1
GND
4
SHIELD
5.6V
Diode_OLD
D3625
PC_L_IN
PC_R_IN
5.6V
Diode_OLD
D3624
P E J 0 2 7 - 0 4
JK3604
6B
T_TERMINAL2
7B
B_TERMINAL2
5
T_SPRING
4
R_SPRING
7A
B_TERMINAL1
6A
T_TERMINAL1
3
E_SPRING
JP3605
JP3606
18pF
50V
50V
D3625-*1
f o r E M I _ C a p
18pF
50V
50V
D3624-*1
f o r E M I _ C a p
RGB PC
SPDIF OUT
36
JACK HIGH / MID
2 0 1 1 . 0 9 . 2 9
C l o s e d t o J A C K
xxLT760H-UA
PC AUDIO
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