Read LG 26LT670H (CHASSIS:LA2AE) Service Manual 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.
D1-_HDMI2
0.047uF
C209
AMP_SDA
IF_AGC_MAIN
510
R4042
AVSS_PGA
0.047uF
C208
D0-_HDMI1
33
R228
DSUB_R+
2.2uF
C245
DDC_SCL_1
D0+_HDMI4
0.047uF
C206
68
R233
HPD4
1000pF
C210
AVDD25_PGA
10
K
R
40
26
CK-_HDMI2
AMP_SCL
D1+_HDMI1
510
R4025
HPD2
D1-_HDMI4
2
.4
K
R
40
23
CK-_HDMI1
D2+_HDMI2
VDD33
TU_CVBS
CK+_HDMI1
MIUVDDC
AUD_MASTER_CLK_0
D2+_HDMI4
2.2uF
C244
D2-_HDMI1
D1+_HDMI2
2.2uF
C236
68
R231
IR
DSUB_HSYNC
D0+_HDMI1
AV_COMP_PC_L_IN
AVDD_NODIE
D1-_HDMI1
68
R252
CK+_HDMI2
2.2uF
C237
AV_COMP_PC_R_IN
D2+_HDMI1
1uF
C4045
BLM18SG121TN1D
L202
AUD_SCK
HPD1
TU_SCL
AVDD2P5
HDMI_ARC
DDC_SCL_2
SIDE_USB_DP
D1+_HDMI4
33
R210
OPT
D0-_HDMI2
1000pF
OPT
C203
VDD33
0.047uF
C204
33
R232
AV_CVBS_IN
0.047uF
C216
33
R230
VDD33
DDC_SDA_1
DDC_SDA_4
10uF
C263
DDC_SCL_4
CEC_REMOTE_S7
D2-_HDMI2
CK-_HDMI4
DSUB_G+
DDC_SDA_2
SIDE_USB_DM
0.047uF
C217
TU_SDA
D2-_HDMI4
0.047uF
C233
AUD_LRCK
AVDD_AU33
0.047uF
C205
SOC_RESET
33
R244
DSUB_VSYNC
4.7uF
C249
33
R246
68
R229
AUD_LRCH
0.1uF
C256
CK+_HDMI4
AVDD_MIU
FB_CORE
D0+_HDMI2
+1.10V_VDDC
D0-_HDMI4
TP200
DSUB_B+
0.047uF
C231
0.047uF
C207
AVDD2P5_MOD
0
R264
0.047uF
25V
C4065
PM_MODEL_OPT_1
22
R218
22
R220
22
R219
22
R221
22
R223
22
R222
LGE2112-T8
IC101
S7LR_DIVX_MS10
RXACKP
J 2
RXACKN
J 3
RXA0P
K3
RXA0N
J 1
RXA1P
K2
RXA1N
K1
RXA2P
L2
RXA2N
L3
DDCDA_DA/GPIO24
T5
DDCDA_CK/GPIO23
T4
HOTPLUGA/GPIO19
V5
HOTPLUGB/GPIO20
R5
RXCCKP
AE9
RXCCKN
AC9
RXC0P
AC10
RXC0N
AD9
RXC1P
AC11
RXC1N
AD10
RXC2P
AE11
RXC2N
AD11
DDCDC_DA/GPIO28
AE8
DDCDC_CK/GPIO27
AD8
HOTPLUGC/GPIO21
AC8
RXDCKP
F2
RXDCKN
F3
RXD0P
G3
RXD0N
F1
RXD1P
G2
RXD1N
G1
RXD2P
H2
RXD2N
H3
DDCDD_DA/GPIO30
R6
DDCDD_CK/GPIO29
U6
HOTPLUGD/GPIO22
P5
CEC/GPIO5
R4
HSYNC0
P2
VSYNC0
R3
RIN0P
N2
RIN0M
P3
GIN0P
N3
GIN0M
N1
BIN0P
M3
BIN0M
M2
SOGIN0
M1
HSYNC1
V2
VSYNC1
V3
RIN1P
U3
RIN1M
U2
GIN1P
T1
GIN1M
T2
BIN1P
R2
BIN1M
R1
SOGIN1
T3
HSYNC2
AA2
RIN2P
Y2
RIN2M
AA3
GIN2P
W2
GIN2M
Y3
BIN2P
V1
BIN2M
W3
SOGIN2
W1
CVBS0
AA8
CVBS1
Y4
CVBS2
W4
CVBS3
AA5
CVBS4
Y5
CVBS5
AA4
CVBSOUT0
Y6
CVBSOUT1
AA1
VCOM
AB4
VIFP
AC4
VIFM
AD3
I P
AC3
IM
AE3
SIFP
AD4
SIFM
AC5
IF_AGC
AD2
RF_AGC
AE2
I2C_SCKM1/GPIO75
AE6
I2C_SDAM1/GPIO76
AD6
XIN
AD1
XOUT
AC1
SPDIF_IN/GPIO152
D7
SPDIF_OUT/GPIO153
D6
USB0_DM
E3
USB0_DP
E2
USB1_DM
AC12
USB1_DP
AE12
I2S_IN_BCK/GPIO150
C8
I2S_IN_SD/GPIO151
D8
I2S_IN_WS/GPIO149
D9
I2S_OUT_BCK/GPIO156
B10
I2S_OUT_MCK/GPIO154
C9
I2S_OUT_SD/GPIO157
B9
I2S_OUT_WS/GPIO155
C10
AUL0
AB9
AUR0
AA11
AUL1
Y9
AUR1
AA9
AUL2
AA7
AUR2
AB8
AUL3
Y8
AUR3
Y10
AUL4
AC7
AUR4
AD7
AUOUTL0
W6
AUOUTL2
V6
AUOUTL3
V4
AUOUTR0
Y7
AUOUTR2
W5
AUOUTR3
U5
AUVRM
AD5
AUVAG
AE5
AUVRP
AC6
EARPHONE_OUTL
AA6
EARPHONE_OUTR
AB6
ET_RXD[0]/RP/GPIO60
C6
ET_TXD[0]/TP/GPIO57
C5
ET_RXD[1]/RN/GPIO63
A6
ET_TXD[1]/LED1/GPIO56
C4
ET_TX_CLK/TN/GPIO59
B5
ET_TX_EN/GPIO58
C3
ET_MDC/GPIO61
A3
ET_MDIO/GPIO62
B3
ET_COL/LED0/GPIO55
B4
IRIN/GPIO4
N4
ARC0
T6
HWRESET
N5
LGE2112-T8
IC101
S7LR_DIVX_MS10
AVDDLV_USB
K12
VDDC_1
G9
VDDC_2
H9
VDDC_3
K10
VDDC_4
K11
VDDC_5
L10
VDDC_6
M12
VDDC_7
M13
VDDC_8
N12
VDDC_9
P14
VDDC_10
P15
VDDC_11
R10
VDDC_12
R14
VDDC_13
R15
VDDC_14
T10
AVDD1P0
P10
FB_CORE
P19
AVDDL_MOD
R16
AVDD10_LAN
L11
DVDD_DDR
M14
AVDD2P5_ADC_1
W9
AVDD2P5_ADC_2
W10
AVDD2P5_ADC_3
W11
AVDD25_REF
W12
AVDD25_LAN
Y17
AVDD_MOD_1
V18
AVDD_MOD_2
U19
AVDD25_PGA
W14
AVSS_PGA
W15
AVDD_NODIE
U7
AVDD_DVI_USB_1
L7
AVDD_DVI_USB_2
M7
AVDD3P3_MPLL
P7
AVDD_DMPLL
R7
DVDD_NODIE
M19
AVDD_AU33
V7
AVDD_EAR33
W7
VDDP_1
R19
VDDP_2
T19
AVDD_LPLL_1
W18
AVDD_LPLL_2
W19
VDDP_NAND
V19
AVDD_DDR0_D_1
J17
AVDD_DDR0_D_2
K15
AVDD_DDR0_D_3
K16
AVDD_DDR0_C
L15
AVDD_DDR1_D_1
K17
AVDD_DDR1_D_2
L17
AVDD_DDR1_D_3
M17
AVDD_DDR1_C
L16
GND_EFUSE
E9
GND_1
A23
GND_2
B17
GND_3
C23
GND_4
A5
GND_5
C11
GND_6
C19
GND_7
C22
GND_8
D14
GND_9
D18
GND_10
D19
GND_11
E17
GND_12
E18
GND_13
E19
GND_14
E22
GND_15
F8
GND_16
F17
GND_17
F18
GND_18
F19
GND_19
G8
GND_20
H8
GND_21
N22
GND_22
N21
GND_23
N20
GND_24
M22
GND_25
M21
GND_26
M20
GND_27
F10
GND_28
V15
GND_29
W16
GND_30
V8
GND_31
T18
GND_32
G10
GND_33
G11
GND_34
G12
GND_35
G13
GND_36
G14
GND_37
G17
GND_38
G18
GND_39
G19
GND_40
G24
GND_41
H11
GND_42
H12
GND_43
H13
GND_44
H14
GND_45
H15
GND_46
H16
GND_47
H17
GND_48
H18
GND_49
H19
GND_50
J 9
GND_51
J10
GND_52
J11
GND_53
J12
GND_54
J13
GND_55
J14
GND_56
J15
GND_57
J16
GND_58
J18
GND_59
J19
GND_60
J25
GND_61
K9
GND_62
K13
GND_63
K14
GND_64
H10
GND_65
K18
GND_66
K19
GND_67
K22
GND_68
L8
GND_69
L9
GND_70
J 8
GND_71
L12
GND_72
L13
GND_73
L18
GND_74
L19
GND_75
M8
GND_76
K8
GND_77
M10
GND_78
M11
GND_79
L14
GND_80
M15
GND_81
M16
GND_82
M18
GND_83
M25
GND_84
N10
GND_85
N11
GND_86
N13
GND_87
N14
GND_88
N15
GND_89
N16
GND_90
N17
GND_91
N19
GND_92
K7
GND_93
P8
GND_94
P9
GND_95
M9
GND_96
P11
GND_97
P13
GND_98
P16
GND_99
P17
GND_100
P18
GND_101
P12
GND_102
R8
GND_103
R9
GND_104
R11
GND_105
R12
GND_106
R13
GND_107
R17
GND_108
T8
GND_109
T9
GND_110
N7
GND_111
T11
GND_112
T12
GND_113
T13
GND_114
T14
GND_115
T15
GND_116
T16
GND_117
T17
GND_118
U8
GND_119
U9
GND_120
U10
GND_121
U11
GND_122
U12
GND_123
U13
GND_124
U14
GND_125
U15
GND_126
U16
GND_127
U17
GND_128
R18
GND_129
V9
GND_130
V10
GND_131
V11
GND_132
V12
GND_133
V14
GND_134
V17
GND_135
T7
GND_136
E8
0
R268
FE_DEMOD_SCL
FE_DEMOD_SDA
FE_DEMOD_SDA
22
R213
22
R214
EXT_SPK
PC_R_IN
PC_L_IN
1uF
C253
10
R253
OPT
0
R270
0
R269
1K
R
40
29
N
O
N
_O
LE
D
MODEL_OPT_0
100
R204
OPT
MODEL_OPT_6
100
OPT
R4040
1K
FH
D
R
22
7
+3.3V_Normal
100
OPT
R4039
MODEL_OPT_7
100
R203
OPT
100
R4031 OPT
1K
PH
M
_O
N
R
21
1
MODEL_OPT_2
100
R201
OPT
1K
R
20
9
N
O
N
_D
V
B
_T
2
1K
D
V
B
_T
2
R
20
8
1K
R
40
28
D
V
B
_S
1K
PH
M
_O
FF
R
21
2
MODEL_OPT_1
100
R4032 OPT
MODEL_OPT_5
1K
N
O
N
_3
D
R
20
7
1K
R
40
30
N
O
N
_D
V
B
_S
+2.5V_Normal
1K
3D
R
20
6
+3.3V_Normal
MODEL_OPT_4
100
R202
OPT
1K
H
D
R
22
6
1K
R
29
4
1K
R
40
27
O
LE
D
MODEL_OPT_3
1K
O
PT
R
29
1
1K
O
PT
R
29
0
1K
R
29
3
1M
R
28
7
24MHz
X201
22pF
C261
22pF
C262
10K
R4019
0
R4001
OPT
+3.3V_Normal
0
R4004
BLM18PG121SN1D
L227
0.1uF
C4064
TU_SIF
0.1uF
C250
1000pF
OPT
C264
0.1uF
C251
47
R4003
47
R4002
+3.5V_ST
10
R217
4.7uF
10V
C200
SOC_RESET
0.1uF
C201
62K
R200
JTP-1127WEM
SW200
1
2
4
3
KDS181
D200
100
R205
AVDD_NODIE
BLM18PG121SN1D
L206
+3.5V_ST
0.1uF
C286
0.1uF
C252
+1.10V_VDDC
MIUVDDC
BLM18PG121SN1D
L228
0.1uF
C4062
10uF
C4071
BLM18PG121SN1D
L209
0
.1
u
F
C
29
0
O
PT
0
.1
u
F
C
40
09
+1.5V_DDR
1
u
F
C
40
42
1
0
u
F
C
28
1
O
PT
AVDD_MIU
0
.1
u
F
C
40
46
0
.1
u
F
C
40
36
0
.1
u
F
C
40
38
1
0
u
F
C
27
8
0.1uF
C273
10uF
C269
BLM18SG121TN1D
L223
0.1uF
C271
0.1uF
C270
AVDD25_PGA
AVDD2P5_MOD
BLM18PG121SN1D
L229
0.1uF
C4027
BLM18PG121SN1D
L211
0.1uF
C274
AVSS_PGA
BLM18PG121SN1D
L219
+2.5V_Normal
AVDD2P5
0.1uF
16V
C4070
0
.1
u
F
C
40
20
0.1uF
C240
1
0
u
F
C
29
3
O
PT
0
.1
u
F
C
40
25
1
0
u
F
C
40
01
AVDD_AU33
0
.1
u
F
C
40
07
1
0
u
F
C
28
4
BLM18PG121SN1D
L204
0
.1
u
F
C
40
44
0.1uF
C241
+3.3V_Normal
0
.1
u
F
C
26
5
BLM18PG121SN1D
L208
0
.1
u
F
C
40
14
VDD33
0
.1
u
F
C
40
12
0
.1
u
F
C
26
7
0
.1
u
F
C
40
43
0
.1
u
F
C
23
2
0
.1
u
F
C
40
31
0
.1
u
F
C
29
2 OPT
0
.1
u
F
C
40
24
1
0
u
F
C
22
8
+1.10V_VDDC
0
.1
u
F
C
28
3
0
.1
u
F
C
40
11
0
.1
u
F
C
29
9 OPT
1
u
F
C
27
7
+1.10V_VDDC
0
.1
u
F
C
40
06 OPT
1
0
u
F
C
27
6
1
0
u
F
C
27
5
1
u
F
C
28
0
0
.1
u
F
C
40
19
0
.1
u
F
C
40
13 OPT
PTC_WOL
22
R215
100pF
C4068
0.1uF
C257
IF_N_MSTAR
C4067
OPT
OPT
100
R289
IF_P_MSTAR
0.1uF
C258
100pF
C4069
100
R288
37LT670H-UA
MAIN2, HW OPT
2
20111008
I
M
D
H
DVB_S
MODEL_OPT_1
3D
AB2
A
U
D
IO
IN
PIN NO.
NON_3D
MODEL OPTION
MODEL_OPT_5
PHM_OFF
MODEL_OPT_0
MODEL_OPT_2
NON_DVB_T2
T24
RSDS Power OPT
OLED
TUNER_I2C
MODEL_OPT_3
LOW
NON_DVB_S
Close to MSTAR
F4
U23
PHM_ON
SIDE USB
T25
Close to MSTAR
AB3
MODEL_OPT_4
PIN NAME
NON_OLED
FHD
T
U
O/
nI
S
B
V
C
HD
SOC_RESET
HIGH
I2
S
_
I/
F
B
U
S
D
DVB_T2
MODEL_OPT_6
MODEL_OPT_7
B8
A8
READY
READY
READEY
READY
AV
PC
AUDIO OUT
MODEL OPTION
ANALOG SIF
Close to MSTAR
STby 3.5V
AVDD_NODIE:7.362mA
DDR3 1.5V
AVDD_DDR1:55mA
AVDD_DDR0:55mA
AVDD25_PGA:13mA
C l o s e t o I C w i t h w i d t h t r a c e
AVDD2P5:172mA
Normal 2.5V
Normal Power 3.3V
VDDC 1.05V
VDDC : 2026mA
DTV_IF
Close to MSTAR
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