DOWNLOAD LG 42LT770H (CHASSIS:LA2FF) Service Manual ↓ Size: 9.05 MB | Pages: 49 in PDF or view online for FREE

Model
42LT770H (CHASSIS:LA2FF)
Pages
49
Size
9.05 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
42lt770h-chassis-la2ff.pdf
Date
PREV: LG 42LT760H-ZA (CHASSIS:LD2FF) Service Manual

LG 42LT770H (CHASSIS:LA2FF) 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.
TXACLKN
C7102
0.1uF
50V
OPT
TXA0N
C7100
10uF
16V
OPT
TXA1P
TXBCLKN
PANEL_VCC
TXA2P
TXB1P
TXB2P
TXB0N
TXBCLKP
TXA1N
L7100
BLM18SG121TN1D 
TXB1N
TXA3P
TXA2N
TXB0P
TXB2N
TXB3N
TXA3N
R7102
10K
LVDS_SEL_LOW
R7101
3.3K
LVDS_SEL_HIGH
TXACLKP
TXA0P
TXB3P
+3.3V_NORMAL
C7101
1000pF
50V
OPT
P7100
FI-RE51S-HF-J-R1500 
LVDS_51PIN
1
NC
2
NC
3
NC
4
NC
5
NC
6
AUO_65_MIRROR
7
LVDS_SEL
8
NC
9
NC
10
L/DIM_ENABLE
11
GND
12
RA0N
13
RA0P
14
RA1N
15
RA1P
16
RA2N
17
RA2P
18
GND
19
RACLKN
20
RACLKP
21
GND
22
RA3N
23
RA3P
24
RA4N
25
RA4P
26
GND
27
BIT_SEL
28
RB0N
29
RB0P
30
RB1N
31
RB1P
32
RB2N
33
RB2P
34
GND
35
RBCLKN
36
RBCLKP
37
GND
38
RB3N
39
RB3P
40
RB4N
41
RB4P
42
GND
43
GND
44
GND
45
GND
46
GND
47
NC
48
VLCD
49
VLCD
50
VLCD
51
VLCD
52
GND
TXA0N
TXACLKN
TXA1P
TXACLKP
TXA2N
P7101
FF10001-30
LVDS_30PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
TXA3P
LVDS_SEL
TXA3N
TXA2P
TXA0P
TXA1N
LVDS_SEL
LVDS_SEL
R7103
3.3K
BIT_SEL_HIGH
R7104
10K
BIT_SEL_LOW
+3.3V_NORMAL
BIT_SEL
BIT_SEL
R7107
33
37_LGD
PWM_DIM1
R7106
10K
OPT
+3.3V_NORMAL
R7108
0
OPT
R7105
1K
37_LGD
R7109
0
OPT
OPC_EN
[51Pin LVDS OUTPUT Connector] 
LVDS
LVDS_SEL
71
LVDS_HIGH_MID
2011.08.11
[30Pin LVDS OUTPUT Connector] 
BIT_SEL
xxLT760H-UA
OPC_SEL
OPC_EN : Only LGD32" & LGD37"
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.
I2C_SCL1
L/DIM0_SCLK
R7601
10K
LOCAL_DIM
+3.3V_NORMAL
L/DIM0_MOSI
R7607
4.7K
LOCAL_DIM
R7606
33
LOCAL_DIM
P7600
12507WR-08L
LOCAL_DIM
1
2
3
4
5
6
7
8
9
I2C_SDA1
L/DIM0_VS
R7600
10K
OPT
AR7600
33
1/16W
LOCAL_DIM
JP7605
JP7606
LOCAL DIMMING
[To LED DRIVER]
76
LOCAL DIMMING
2011.04.30
xxLT760H-UA
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.
EMMC_DATA[5]
EMMC_DATA[0]
EMMC_DATA[2]
EMMC_DATA[1]
EMMC_DATA[4]
EMMC_DATA[7]
EMMC_DATA[3]
EMMC_DATA[6]
DAT4
DAT6
EMMC_RST
3.3V_EMMC
DAT5
DAT4
DAT5
C8104
0.1uF
16V
R8116
10K
DAT3
EMMC_CMD
C8103
2.2uF
10V
EMMC_VCCQ
EMMC_DATA[0-7]
C8106
2.2uF
10V
EMMC_VCCQ
C8107
10pF
50V
OPT
DAT6
C8102
0.1uF
16V
DAT3
R8117
10K
C8105
0.1uF
16V
EMMC_CLK
IC8100-*1
H26M21001ECR
HYNIX_EMMC_2GB
DAT0
A3
DAT1
A4
DAT2
A5
DAT3
B2
DAT4
B3
DAT5
B4
DAT6
B5
DAT7
B6
CLK
M6
CMD
M5
NC_3
A6
NC_4
A7
NC_23
C5
NC_42
E5
NC_43
E8
NC_44
E9
NC_45
E10
NC_52
F10
NC_58
G3
NC_59
G10
NC_66
H5
NC_73
J5
NC_80
K6
NC_81
K7
NC_82
K10
NC_116
P7
NC_119
P10
RESET
K5
VCCQ_1
C6
VCCQ_2
M4
VCCQ_3
N4
VCCQ_4
P3
VCCQ_5
P5
VCC_1
E6
VCC_2
F5
VCC_3
J10
VCC_4
K9
VDDI
C2
VSS_1
E7
VSS_2
G5
VSS_3
H10
VSS_4
K8
VSSQ_1
C4
VSSQ_2
N2
VSSQ_3
N5
VSSQ_4
P4
VSSQ_5
P6
NC_1
A1
NC_2
A2
NC_5
A8
NC_6
A9
NC_7
A10
NC_8
A11
NC_9
A12
NC_10
A13
NC_11
A14
NC_12
B1
NC_13
B7
NC_14
B8
NC_15
B9
NC_16
B10
NC_17
B11
NC_18
B12
NC_19
B13
NC_20
B14
NC_21
C1
NC_22
C3
NC_24
C7
NC_25
C8
NC_26
C9
NC_27
C10
NC_28
C11
NC_29
C12
NC_30
C13
NC_31
C14
NC_32
D1
NC_33
D2
NC_34
D3
NC_35
D4
NC_36
D12
NC_37
D13
NC_38
D14
NC_39
E1
NC_40
E2
NC_41
E3
NC_46
E12
NC_47
E13
NC_48
E14
NC_49
F1
NC_50
F2
NC_51
F3
NC_53
F12
NC_54
F13
NC_55
F14
NC_56
G1
NC_57
G2
NC_60
G12
NC_61
G13
NC_62
G14
NC_63
H1
NC_64
H2
NC_65
H3
NC_67
H12
NC_68
H13
NC_69
H14
NC_70
J1
NC_71
J2
NC_72
J3
NC_74
J12
NC_75
J13
NC_76
J14
NC_77
K1
NC_78
K2
NC_79
K3
NC_83
K12
NC_84
K13
NC_85
K14
NC_86
L1
NC_87
L2
NC_88
L3
NC_89
L12
NC_90
L13
NC_91
L14
NC_92
M1
NC_93
M2
NC_94
M3
NC_95
M7
NC_96
M8
NC_97
M9
NC_98
M10
NC_99
M11
NC_100
M12
NC_101
M13
NC_102
M14
NC_103
N1
NC_104
N3
NC_105
N6
NC_106
N7
NC_107
N8
NC_108
N9
NC_109
N10
NC_110
N11
NC_111
N12
NC_112
N13
NC_113
N14
NC_114
P1
NC_115
P2
NC_117
P8
NC_118
P9
NC_120
P11
NC_121
P12
NC_122
P13
NC_123
P14
EMMC_CLK_BALL
EMMC_CMD_BALL
EMMC_CMD_BALL
EMMC_CLK_BALL
EMMC_RESET_BALL
EMMC_RESET_BALL
EMMC_VDDI
EMMC_VDDI
DAT5
AR8100
22
1/16W
AR8101
22
1/16W
AR8102
22
R8100
10K
R8101
10K
R8102
10K
R8103
10K
R8104
10K
R8105
10K
R8106
10K
R8107
10K
IC8100-*3
H26M31001EFR
DEV_HYNIX_EMMC_4GB
DAT0
A3
DAT1
A4
DAT2
A5
DAT3
B2
DAT4
B3
DAT5
B4
DAT6
B5
DAT7
B6
CLK
M6
CMD
M5
NC_3
A6
NC_4
A7
NC_23
C5
NC_42
E5
NC_43
E8
NC_44
E9
NC_45
E10
NC_52
F10
NC_58
G3
NC_59
G10
NC_66
H5
NC_73
J5
NC_80
K6
NC_81
K7
NC_82
K10
NC_116
P7
NC_119
P10
RESET
K5
VCCQ_1
C6
VCCQ_2
M4
VCCQ_3
N4
VCCQ_4
P3
VCCQ_5
P5
VCC_1
E6
VCC_2
F5
VCC_3
J10
VCC_4
K9
VDDI
C2
VSS_1
E7
VSS_2
G5
VSS_3
H10
VSS_4
K8
VSSQ_1
C4
VSSQ_2
N2
VSSQ_3
N5
VSSQ_4
P4
VSSQ_5
P6
NC_1
A1
NC_2
A2
NC_5
A8
NC_6
A9
NC_7
A10
NC_8
A11
NC_9
A12
NC_10
A13
NC_11
A14
NC_12
B1
NC_13
B7
NC_14
B8
NC_15
B9
NC_16
B10
NC_17
B11
NC_18
B12
NC_19
B13
NC_20
B14
NC_21
C1
NC_22
C3
NC_24
C7
NC_25
C8
NC_26
C9
NC_27
C10
NC_28
C11
NC_29
C12
NC_30
C13
NC_31
C14
NC_32
D1
NC_33
D2
NC_34
D3
NC_35
D4
NC_36
D12
NC_37
D13
NC_38
D14
NC_39
E1
NC_40
E2
NC_41
E3
NC_46
E12
NC_47
E13
NC_48
E14
NC_49
F1
NC_50
F2
NC_51
F3
NC_53
F12
NC_54
F13
NC_55
F14
NC_56
G1
NC_57
G2
NC_60
G12
NC_61
G13
NC_62
G14
NC_63
H1
NC_64
H2
NC_65
H3
NC_67
H12
NC_68
H13
NC_69
H14
NC_70
J1
NC_71
J2
NC_72
J3
NC_74
J12
NC_75
J13
NC_76
J14
NC_77
K1
NC_78
K2
NC_79
K3
NC_83
K12
NC_84
K13
NC_85
K14
NC_86
L1
NC_87
L2
NC_88
L3
NC_89
L12
NC_90
L13
NC_91
L14
NC_92
M1
NC_93
M2
NC_94
M3
NC_95
M7
NC_96
M8
NC_97
M9
NC_98
M10
NC_99
M11
NC_100
M12
NC_101
M13
NC_102
M14
NC_103
N1
NC_104
N3
NC_105
N6
NC_106
N7
NC_107
N8
NC_108
N9
NC_109
N10
NC_110
N11
NC_111
N12
NC_112
N13
NC_113
N14
NC_114
P1
NC_115
P2
NC_117
P8
NC_118
P9
NC_120
P11
NC_121
P12
NC_122
P13
NC_123
P14
DUMMY_1
DU1
DUMMY_2
DU2
DUMMY_3
DU3
DUMMY_4
DU4
DUMMY_5
DU5
DUMMY_6
DU6
DUMMY_7
DU7
DUMMY_8
DU8
DUMMY_9
DU9
DUMMY_10
DU10
DUMMY_11
DU11
DUMMY_12
DU12
DUMMY_13
DU13
DUMMY_14
DU14
DUMMY_15
DU15
DUMMY_16
DU16
IC8100-*2
KLM2G1HE3F-B001
SAMSUNG_EMMC_2GB
DAT0
A3
DAT1
A4
DAT2
A5
DAT3
B2
DAT4
B3
DAT5
B4
DAT6
B5
DAT7
B6
CLK
M6
CMD
M5
NC_3
A6
NC_4
A7
NC_23
C5
NC_42
E5
NC_43
E8
NC_44
E9
NC_45
E10
NC_52
F10
NC_58
G3
NC_59
G10
NC_66
H5
NC_73
J5
NC_80
K6
NC_81
K7
NC_82
K10
NC_116
P7
NC_119
P10
RSTN
K5
VDD_1
C6
VDD_2
M4
VDD_3
N4
VDD_4
P3
VDD_5
P5
VDDF_1
E6
VDDF_2
F5
VDDF_3
J10
VDDF_4
K9
VDDI
C2
VSS_1
C4
VSS_2
E7
VSS_3
G5
VSS_4
H10
VSS_5
K8
VSS_6
N2
VSS_7
N5
VSS_8
P4
VSS_9
P6
NC_1
A1
NC_2
A2
NC_5
A8
NC_6
A9
NC_7
A10
NC_8
A11
NC_9
A12
NC_10
A13
NC_11
A14
NC_12
B1
NC_13
B7
NC_14
B8
NC_15
B9
NC_16
B10
NC_17
B11
NC_18
B12
NC_19
B13
NC_20
B14
NC_21
C1
NC_22
C3
NC_24
C7
NC_25
C8
NC_26
C9
NC_27
C10
NC_28
C11
NC_29
C12
NC_30
C13
NC_31
C14
NC_32
D1
NC_33
D2
NC_34
D3
NC_35
D4
NC_36
D12
NC_37
D13
NC_38
D14
NC_39
E1
NC_40
E2
NC_41
E3
NC_46
E12
NC_47
E13
NC_48
E14
NC_49
F1
NC_50
F2
NC_51
F3
NC_53
F12
NC_54
F13
NC_55
F14
NC_56
G1
NC_57
G2
NC_60
G12
NC_61
G13
NC_62
G14
NC_63
H1
NC_64
H2
NC_65
H3
NC_67
H12
NC_68
H13
NC_69
H14
NC_70
J1
NC_71
J2
NC_72
J3
NC_74
J12
NC_75
J13
NC_76
J14
NC_77
K1
NC_78
K2
NC_79
K3
NC_83
K12
NC_84
K13
NC_85
K14
NC_86
L1
NC_87
L2
NC_88
L3
NC_89
L12
NC_90
L13
NC_91
L14
NC_92
M1
NC_93
M2
NC_94
M3
NC_95
M7
NC_96
M8
NC_97
M9
NC_98
M10
NC_99
M11
NC_100
M12
NC_101
M13
NC_102
M14
NC_103
N1
NC_104
N3
NC_105
N6
NC_106
N7
NC_107
N8
NC_108
N9
NC_109
N10
NC_110
N11
NC_111
N12
NC_112
N13
NC_113
N14
NC_114
P1
NC_115
P2
NC_117
P8
NC_118
P9
NC_120
P11
NC_121
P12
NC_122
P13
NC_123
P14
C8100
0.1uF
16V
OPT
IC8100
SDIN5D2-4G-974L1
SANDISK_EMMC_4GB
DAT0
A3
DAT1
A4
DAT2
A5
DAT3
B2
DAT4
B3
DAT5
B4
DAT6
B5
DAT7
B6
CLK
M6
CMD
M5
NC_3
A6
NC_4
A7
NC_23
C5
NC_42
E5
NC_43
E8
NC_44
E9
NC_45
E10
NC_52
F10
NC_58
G3
NC_59
G10
NC_66
H5
NC_73
J5
NC_80
K6
NC_81
K7
NC_82
K10
NC_116
P7
NC_119
P10
RESET
K5
VCCQ_1
C6
VCCQ_2
M4
VCCQ_3
N4
VCCQ_4
P3
VCCQ_5
P5
VCC_1
E6
VCC_2
F5
VCC_3
J10
VCC_4
K9
VDDI
C2
VSS_1
E7
VSS_2
G5
VSS_3
H10
VSS_4
K8
VSSQ_1
C4
VSSQ_2
N2
VSSQ_3
N5
VSSQ_4
P4
VSSQ_5
P6
NC_1
A1
NC_2
A2
NC_5
A8
NC_6
A9
NC_7
A10
NC_8
A11
NC_9
A12
NC_10
A13
NC_11
A14
NC_12
B1
NC_13
B7
NC_14
B8
NC_15
B9
NC_16
B10
NC_17
B11
NC_18
B12
NC_19
B13
NC_20
B14
NC_21
C1
NC_22
C3
NC_24
C7
NC_25
C8
NC_26
C9
NC_27
C10
NC_28
C11
NC_29
C12
NC_30
C13
NC_31
C14
NC_32
D1
NC_33
D2
NC_34
D3
NC_35
D4
NC_36
D12
NC_37
D13
NC_38
D14
NC_39
E1
NC_40
E2
NC_41
E3
NC_46
E12
NC_47
E13
NC_48
E14
NC_49
F1
NC_50
F2
NC_51
F3
NC_53
F12
NC_54
F13
NC_55
F14
NC_56
G1
NC_57
G2
NC_60
G12
NC_61
G13
NC_62
G14
NC_63
H1
NC_64
H2
NC_65
H3
NC_67
H12
NC_68
H13
NC_69
H14
NC_70
J1
NC_71
J2
NC_72
J3
NC_74
J12
NC_75
J13
NC_76
J14
NC_77
K1
NC_78
K2
NC_79
K3
NC_83
K12
NC_84
K13
NC_85
K14
NC_86
L1
NC_87
L2
NC_88
L3
NC_89
L12
NC_90
L13
NC_91
L14
NC_92
M1
NC_93
M2
NC_94
M3
NC_95
M7
NC_96
M8
NC_97
M9
NC_98
M10
NC_99
M11
NC_100
M12
NC_101
M13
NC_102
M14
NC_103
N1
NC_104
N3
NC_105
N6
NC_106
N7
NC_107
N8
NC_108
N9
NC_109
N10
NC_110
N11
NC_111
N12
NC_112
N13
NC_113
N14
NC_114
P1
NC_115
P2
NC_117
P8
NC_118
P9
NC_120
P11
NC_121
P12
NC_122
P13
NC_123
P14
DUMMY_1
DU1
DUMMY_2
DU2
DUMMY_3
DU3
DUMMY_4
DU4
DUMMY_5
DU5
DUMMY_6
DU6
DUMMY_7
DU7
DUMMY_8
DU8
DUMMY_9
DU9
DUMMY_10
DU10
DUMMY_11
DU11
DUMMY_12
DU12
DUMMY_13
DU13
DUMMY_14
DU14
DUMMY_15
DU15
DUMMY_16
DU16
R8106-*1
47K
R8100-*1
47K
R8105-*1
47K
R8102-*1
47K
R8107-*1
47K
R8104-*1
47K
R8103-*1
47K
R8101-*1
47K
11.09.29
81
eMMC
eMMC I/F
Don’t Connect Power At VDDI
(Just Interal LDO Capacitor)
xxLT760H-UA
EMMC DATA LINE 47K PULL/UP
EMMC DATA LINE
10K PULL/UP
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.
C8221
22pF
TS_S_IN_1_VAL
+3.3V_3305
+1.2V_3305
C8208
0.1uF
C8226
0.1uF
C8210
0.1uF
R8219
100
C8222
22pF
C8223
0.1uF
C8217
0.1uF
L8200
BLM18PG121SN1D
L8202
BLM18PG121SN1D
C8225
0.1uF
R8218
100
C8209
0.1uF
C8216
0.1uF
+3.3V_3305
C8220
0.1uF
R8209
1K
+3.3V_3305
SUB_PDIF
89:I23
R8204
1K
C8215
0.1uF
/LGDT3305_RESET
SUB_NDIF
89:I23
TS_S_IN_1_DATA
AR8200
22
C8213
30pF
50V
Xtal_Old
L8203
BLM18PG121SN1D
C8227
10uF
10V
TS_S_IN_1_SYNC
R8212
100
R8215
22
C8218
0.1uF
C8224
0.1uF
TS_S_IN_1_CLK
C8214
30pF
50V
Xtal_Old
R8213
1M
X8200
25MHz
L8201
BLM18PG121SN1D
R8214
1K
C8212
0.1uF
+1.2V_3305
+3.3V_TU
+3.3V_3305
D8200
1N4148W
C8219
1uF
10V
R8216
47K
R8211
1K
OPT
I2C_SCL4_blan
I2C_SDA4_blan
R8205
100
OPT
R8206
100
OPT
LD8200
+3.3V_3305
C8211
0.22uF
R8208
470
R8217
OPT
R8207
100
3305_IF_AGC
C8206
0.01uF
IC8200
LGDT3305
1
NC_1
2
VINA2
3
VINA1
4
INCAP
5
VSSAAD10A
6
I2CSEL
7
ANTCON
8
VDD_1
9
I2CRPT_SCL
10
I2CRPT_SDA
11
IFOUT
12
RFOUT
13
TPERR
14
VDD33_1
15
TPVALID
16
TPDATA[0]
17
VSS33_1
18
TPDATA[1]
19
TPDATA[2]
20
TPDATA[3]
21
TPDATA[4]
22
TPDATA[5]
23
TPDATA[6]
24
TPDATA[7]
25
TPCLK
26
TPSOP
27
NIRQ
28
SDA
29
VDD33_2
30
SCL
31
VSS_1
32
VDD_2
33
VSS_2
34
VSS33_2
35
PLLAVDD
36
PLLAVSS
37
NRST
38
OPM
39
VDD33_3
40
NC_2
41
VSS33_3
42
XTALI
43
XTALO
44
VSS_3
45
XM
46
VDD_3
47
VSSDAD10
48
VCCAAD10A
49
[EP]GND
C8207
1000pF
50V
+1.23V_TU
I2C_SCL4
I2C_SDA4
C8204
0.01uF
C8205
0.01uF
R8201
0
R8202
0
C8213-*1
33pF
50V
Xtal_matching
C8214-*1
33pF
50V
Xtal_matching
ATSC Digital Demodulator_LGDT3305 (USA)
demod to Main SoC
close to IC(LGDT3305)
(for pro:centric DATA channel)
 caution : Demodulator Power Sequence  
MIN 10ms
VDD1.0V
MIN 1ms
nRST
input; Digital IO
VDD3.3V
MIN 1ms
MIN 1ms
xxLT760H-UA
ATSC demod
2011.02.09
82
                     Near to IC8200
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