LG 32LT670H (CHASSIS:LA2AF) 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.
5V_DET_HDMI_4
D804
OPT
DDC_SDA_1
10K
R862
D1+_HDMI2
HDMI_CEC
D0-_HDMI1
GND
EAG59023302
JK801
HDMI_2
14
13
5
D1_GND
20
SHIELD
12
11
2
D2_GND
19
18
10
CK+
4
D1+
1
D2+
17
9
D0-
8
D0_GND
3
D2-
16
7
D0+
6
D1-
15
J P 8 0 5
2SC3052
Q801
E
B
C
CK-_HDMI4
68K
R854
OPT
D0+_HDMI2
0
R815
D2-_HDMI2
HPD4
10K
R828
CK+_HDMI1
D0+_HDMI4
1K
R896
0
OPT
R805
2SC3052
Q803
E
B
C
1.8K
R803
HPD2
OPT
D811
D801
OPT
5V_DET_HDMI_2
D802
OPT
HDMI_CEC
1.8K
R837
DDC_SCL_4
HDMI_CEC
DDC_SDA_2
EAG62611201
HDMI_SIDE
JK803
14
13
5
D1_GND
20
BODY_SHIELD
12
11
2
D2_GND
19
18
10
CK+
4
D1+
1
D2+
17
9
D0-
8
D0_GND
3
D2-
16
7
D0+
6
D1-
15
D0+_HDMI1
10K
R808
1.8K
R804
D2+_HDMI4
CK-_HDMI2
10K
R806
D1-_HDMI2
DDC_SCL_1
CK+_HDMI4
J P 8 0 6
EAG59023302
JK802
HDMI_1
14
13
5
D1_GND
20
SHIELD
12
11
2
D2_GND
19
18
10
CK+
4
D1+
1
D2+
17
9
D0-
8
D0_GND
3
D2-
16
7
D0+
6
D1-
15
CK+_HDMI2
SI1012CR-T1-GE3
Q806
OPT
S
D
G
0 . 1 u F
16V
16V
C805
OPT
5V_DET_HDMI_1
GND
10K
R830
D0-_HDMI2
CK-_HDMI1
0 . 1 u F
16V
16V
C802
D1-_HDMI1
DDC_SDA_4
AVRL161A1R1NT
OPT
D803
0
R841
1K
R897
68K
OPT
OPT
R857
10K
R807
1K
R895
2SC3052
Q802
E
B
C
D1+_HDMI4
3.3K
R835
DDC_SCL_2
0 . 1 u F
16V
16V
C803
5V_HDMI_4
HDMI_ARC
D2-_HDMI4
HDMI_CEC
D2+_HDMI2
5V_HDMI_2
D0-_HDMI4
+3.5V_ST
10K
R856
OPT
D1-_HDMI4
D2+_HDMI1
D2-_HDMI1
3.3K
R802
CEC_REMOTE_S7
3.3K
R801
HPD1
0 . 1 u F
16V
16V
C801
5V_HDMI_1
D1+_HDMI1
0
R824
100
R855
ENKMC2838-T112
D821
D821
A1
C
A2
ENKMC2838-T112
D822
D822
A1
C
A2
2.7K
R884
2.7K
R889
2.7K
R891
2.7K
R888
5V_HDMI_4
+5V_Normal
DDC_SDA_4
2.7K
R887
0 . 1 u F
C809
DDC_SCL_1
DDC_SDA_2
5V_HDMI_2
DDC_SDA_1
+5V_Normal
0 . 1 u F
C806
0 . 1 u F
C807
ENKMC2838-T112
D824
D824
A1
C
A2
5V_HDMI_1
DDC_SCL_2
DDC_SCL_4
+5V_Normal
2.7K
R885
20110324
GP3_S7LR
HDMI
8
HDMI_1
HDMI_2
For CEC
SIDE_HDMI
HDMI EEPROM
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.
DSUB_DET
5.6V
OPT
D1114
RGB_DDC_SDA
2.2K
R1140
30V
D1110
30V
D1113
18pF
50V
C1128
DSUB_HSYNC
2.2K
R1139
+3.3V_Normal
DSUB_B+
10K
R1146
75
R1133
30V
D1112
1K
R1147
22
R1143
+5V_Normal
75
R1137
RGB_DDC_SCL
68pF
50V
50V
OPT
C1126
18pF
50V
C1127
75
R1135
22
R1141
5.6V
OPT
OPT
D1116
30V
D1109
SPG09-DB-010
JK1104
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
DSUB_G+
5.6V
D1117
OPT
ENKMC2838-T112
D1115
A1
C
A2
DSUB_R+
DSUB_VSYNC
68pF
50V
50V
OPT
C1122
30V
D1111
0 . 1 u F
16V
C1129
20110324
GP3_S7LR
RGB/SPDIF/HP
9
RGB PC
RGB
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.
PM_RXD
PM_TXD
150K
PSU_POWER_OUT
R51
0 . 1 u F
C1105
22UH
PSU_POWER_OUT
L50
CB3216PA501E
POWER_OUT
L54
0 . 3 3 u F
C1101
JP1122
22uF
16V
16V
POWER_OUT
C63
+12V
1/16W
10K
1%
PSU_POWER_OUT
R57
150pF
50V
50V
PSU_POWER_OUT
C50
4.7K
POWER_OUT
R64
22uF
16V
16V
POWER_OUT
C64
0 . 1 u F
C1104
JP1121
MP5000DQ
POWER_OUT
IC52
3
ENABLE/FAULT
2
DV/DT
4
I-LIMIT
1
GND
5
NC
6
SOURCE_1
7
SOURCE_2
8
SOURCE_3
9
SOURCE_4
10
SOURCE_5
11
VCC
22uF
25V
25V
PSU_POWER_OUT
C52
0 . 1 u F
C1106
0 . 1 u F
50V
50V
POWER_OUT
C65
IR_OUT
100K
PSU_POWER_OUT
R52
CDS3C30GTH
30V
30V
D1108
OPT
THERMAL
MP4460DQ-LF-Z
PSU_POWER_OUT
IC50
3
EN
2
SW_2
4
COMP
1
SW_1
5
FB
6
GND
7
FREQ
8
VIN_1
9
VIN_2
10
BST
11
EP_GND
1/16W
20K
1%
PSU_POWER_OUT
R55
EXT_PWR_DET
EXT_12V
1K
POWER_OUT
R66
0 . 1 u F
50V
PSU_POWER_OUT
C53
43
POWER_OUT
R65
1/16W
270K
1%
PSU_POWER_OUT
R56
1K
POWER_OUT
R63
10K
POWER_OUT
R68
0 . 1 u F
C1102
18K
PSU_POWER_OUT
R50
0 . 1 u F
50V
PSU_POWER_OUT
C51
+24V
+3.5V_ST
+3.5V_ST
EAN41348201
MAX3232CDR
IC1101
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
22
PSU_POWER_OUT
R54
0 . 1 u F
50V
50V
PSU_POWER_OUT
C55
470pF
50V
50V
POWER_OUT
C61
0 . 1 u F
C1103
3 . 3 u F
50V
50V
PSU_POWER_OUT
C54
CDS3C30GTH
30V
30V
D1107
OPT
1uF
16V
16V
POWER_OUT
C62
100
R1124
EXT12V_CTRL
EXT_12V
2SC3875S(ALY)
POWER_OUT
Q51
E
B
C
4.7K
POWER_OUT
R67
MBRA340T3G
PSU_POWER_OUT
D50
+12V
+3.5V_ST
1/8W
200K
1%PSU_POWER_OUT
R53
SPG09-DB-009
JK1101
1
2
3
4
5
6
7
8
9
10
2SC3875S(ALY)
POWER_OUT
Q50
E
B
C
100
R1123
CB3216PA501E
LIPS_POWER_OUT
L51
+12V/+15V
1K
R1100
BAP70-02
50V
D1100
+3.5V_ST
20110324
GP3_S7LR
RS232C_9PIN
10
c l o s e t o p i n
( F o r E x t e r n a l p o w e r )
DC DC CONVERTER +12V_ONLY PSU
12V EXT PowerOut
RS232C
S w i t c h i n g n o i s e r e d u c i n g [ M P S r e c o m m e n d ]
$ 0 . 2 1
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.
RXACK-
RXA2+
RXA1-
RXA3-
RXACK+
10K
OPT
R710
RXB1+
RXA2-
RXB3+
10uF
16V
16V
OPT
C700
RXACK+
RXBCK+
120-ohm
WAFER_FHD
L702
RXACK-
RXB0+
RXA3+
+3.3V_Normal
10uF
16V
16V
OPT
C701
RXBCK-
RXA0-
RXA4+
RXA4-
1000pF
50V
50V
C709
OPT
RXB0-
3.3K
OPT
R705
+3.3V_Normal
F I - R E 5 1 S - H F - J - R 1 5 0 0
P703
WAFER_FHD
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
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
RXA2-
RXA0+
0 . 1 u F
16V
16V
HD
C703
RXB1-
0 . 1 u F
16V
16V
C710
WAFER_FHD
FF10001-30
P705
HD
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
RXB2-
RXB4+
RXA0+
RXA1+
RXA0-
PANEL_VCC
1000pF
50V
50V
OPT
C702
RXA3-
10K
OPT
R711
120-ohm
HD
L701
RXA3+
RXA1+
PANEL_VCC
10K
BIT_SEL_LOW
R709
0
OPT
R713
RXB3-
RXB4-
RXB2+
RXA1-
3.3K
OPT
R712
RXA2+
20110324
GP3_S7LR
LVDS_LARGE
11
LVDS_SEL
[ 5 1 P i n L V D S C o n n e c t o r ]
( F o r F H D 6 0 / 1 2 0 H z )
BIT_SEL
LVDS_SEL
[ 3 0 P i n L V D S C o n n e c t o r ]
(For HD 60Hz_Normal)
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