LG 26LT670H (CHASSIS:LA2AE) 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.
1000pF
50V
OPT
C1104
0.1uF
16V
HD
C1105
PANEL_VCC
RXA0+
FF10001-30
HD
P1101
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
RXA1+
RXA0-
3.3K
OPT
R1107
RXACK-
+3.3V_Normal
0
OPT
R1106
RXA3+
RXA2+
RXA3-
RXACK+
10K
OPT
R1108
10uF
16V
OPT
C1103
RXA2-
RXA1-
70-ohm
HD
L1101
20111008
37LT670H-UA
LVDS_LARGE
11
RXA1-
RXA0-
RXBCK-
RXA2-
RXA2+
RXA2+
RXA2+
Pol-change
RXBCK+
RXB4-
LVDS_SEL
RXB1-
RXA3-
RXB1-
RXB3+
RXACK+
RXBCK+
[30Pin LVDS Connector]
(For HD 60Hz_Normal)
RXB3+
RXA0-
RXA3+
RXA1+
RXB0-
RXA2+
RXACK-
RXBCK+
RXACK+
RXA0+
RXB2+
RXB3-
RXBCK-
RXACK+
RXA2+
RXB4-
RXB2-
RXBCK-
RXA3+
RXB2-
RXA4-
RXB2+
RXB1-
RXB2-
S h i f t
Change in S7LR
RXA1-
Pol-change
RXB4-
RXB4+
RXBCK-
RXB4-
RXB0-
RXA3-
RXB3-
RXB1-
RXA4+
RXB4+
RXA4-
RXA2+
RXB0+
RXB2-
RXA4-
RXB3-
RXA1+
RXACK+
RXB0+
RXB2+
RXACK+
RXA1+
RXB3-
RXA4-
RXB3+
RXBCK+
RXB0-
RXB0+
RXB0-
RXB2-
RXA3+
RXA2-
RXA1-
RXA4-
RXA1-
RXB2+
RXA3-
RXB2+
RXB2-
RXB1+
RXB0+
Change in S7LR
RXB4+
RXBCK+
RXA3-
RXB0+
RXB1+
RXB3+
RXBCK+
RXA3-
RXACK-
RXA0-
RXB0-
RXA4+
RXA0-
RXA0+
RXB4-
RXACK-
RXB3-
RXB0-
RXB4+
RXA3-
RXA2+
RXA0-
RXA0+
FOR FHD REVERSE(8bit)
MIRROR
RXB1+
RXB4-
RXB2+
RXA2-
RXB3+
RXACK-
RXB3+
RXA3-
RXA0+
RXA1-
RXA2-
RXB1-
RXA1+
RXB3-
RXA4+
RXB0+
RXA4-
RXB3-
RXB3+
RXB2+
RXA4+
RXB0-
RXB1-
RXA1-
RXB1+
RXA2-
RXA2-
RXA4+
RXB1+
RXACK+
RXB4-
RXA4-
RXACK-
FOR FHD REVERSE(10bit)
RXB1-
RXA4+
MIRROR
RXBCK+
RXA4+
RXA0+
RXA1+
RXB4+
RXA0+
RXA0-
RXA3+
RXA3+
RXACK+
RXACK-
RXB4+
RXA0+
RXBCK-
RXB0+
RXA1+
RXA2-
RXB1+
RXA0-
RXB4+
RXB1+
RXA3+
RXA3+
RXB2-
RXA1+
RXBCK-
RXACK-
RXA1-
RXBCK-
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.
220pF
C1008
+3.5V_ST
RS232_TX
010:N20
100
R1014
100
R1017
0
R1003
SDC15
D1000
A1
C
A2
UART3_TX
010:E20;022:N15;022:Y25;022:AA3
100
R1029
T
P
1
0
0
0
UART3_TX
010:E27;022:N15;022:Y25;022:AA3
220pF
C1007
0
R1006
0
R1010
+3.5V_ST
0
R1011
+3.5V_ST
0.1uF
C1000
SPG09-DB-009
P1000
1
2
3
4
5
6
7
8
9
10
0.33uF
C1005
100
R1009
100
R1019
RESET_high
022:H27
10
K
R
10
25
PTC_TX_S7 001:AB18;001:AM23
PTC_RX_S7_3.3V 001:AB19;001:AL24
PTC_TX
022:X9
T
P
1
0
0
1
1K
R1023
Update_SW
022:F22
S7_TX
001:AB18;001:AL24
47
K
R
10
00
100
R1015
10
K
R
10
26
100
R1020
PTC_RX_5V
022:X7
UART_SWB
022:AA21
0.1uF
C1001
UART3_RX
010:N19;022:N14;022:Y25;022:AA4
+3.5V_ST
UART3_RX
010:J25;022:N14;022:Y25;022:AA4
0
R1001
100
R1008
RS232_RX
010:N20
0
R1002
UART_SWA
022:AA21
0
R1005
10K
R1021
JP1002
+3.5V_ST
0.047uF
C1003
S7_RX
001:AB18;001:AL23
100
R1018
47K
R1007
100
R1012
0.1uF
C1006
JP
1
0
0
1
100
R1013
RS232_RX 010:W22
0
R1027
JP
1
0
0
0
SDC15
D1001
A1
C
A2
EXT_PTC_UPDATE
001:AG6
1K
R1024
RS232_TX 010:W22
0.33uF
C1002
MAX3232CDR
IC1002
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
0.33uF
C1004
10K
R1022
EXT_PTC_RESET
001:AG6
0
R1004
100
R1016
+3.5V_ST
100
R1030
100
R1028
HEF4053B
IC1000
3
Y1C
2
Y0B
4
ZC
1
Y1B
6
E
5
Y0C
7
VEE
8
VSS
9
SC
10
SB
11
SA
12
Y0A
13
Y1A
14
ZA
15
ZB
16
VDD
HEF4053B
IC1001
3
Y1C
2
Y0B
4
ZC
1
Y1B
6
E
5
Y0C
7
VEE
8
VSS
9
SC
10
SB
11
SA
12
Y0A
13
Y1A
14
ZA
15
ZB
16
VDD
MMBT3904(NXP)
Q1000
E
B
C
MMBT3904(NXP)
Q1001
E
B
C
IR_OUT
+3.5V_ST
EXT_12V
EXT_5V
L
1
0
0
0
L
1
0
0
2
OPT
L1001
B
A
P
70
-0
2
50
V
D
10
03
1K
R
10
31
1K
R1044
1/16W
20K
1%
0.1uF
50V
18K
470pF
50V
C1022
CB3216PA501E
+24V/+15V
22uF
25V
150pF
50V
150K
MBRA340T3G
22UH
100K
EXT12V_CTRL
CB3216PA501E
L1007
1/16W
270K
1%
+12V/EXT
0.1uF
50V
3.3uF
50V
MP5000DQ
IC1005
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
1/8W
200K
1%
TH
ER
M
A
L
MP4460DQ-LF-Z
3
EN
2
SW_2
4
COMP
1
SW_1
5
FB
6
GND
7
FREQ
8
VIN_1
9
VIN_2
10
BST
1
1
EP_GND
1/16W
10K
1%
+12V/EXT
0.1uF
50V
22
43
R1045
EXT_12V
0.1uF
50V
C1023
22uF
16V
C1021
22uF
16V
C1020
NR8040T3R6N
3.6uH
L1005
0.1uF
50V
C1018
EXT_5V
TH
ER
M
A
L
TPS54327DDAR
IC1004
3
VREG5
2
VFB
4
SS
1
EN
5
GND
6
SW
7
VBST
8
VIN
9
[EP]GND
10K
R1043
+12V/EXT
1uF
10V
C1016
3300pF
50V
C1017
12K
1%
R1042
EXT5V_CTRL
10uF
25V
C1019
100pF
C1015
BLM18PG121SN1D
L1006
11K
1%
R1041
56K
1%
R1040
100
R1050
100K
R1049
D1004
A
2
C
A
1
EXT_12V
200
R1046
APX803D29
IC1006
1
GND
3
VCC
2 RESET
2.4K
R1048
1/16W
1.2K
R1047
0.1uF
16V
OPT
C1024
EXT_5V
EXT_PWR_DET
20111008
37LT670H-UA
RS232C_9PIN
10
PTC OAD
SIMULATION
M-STAR DEBUG
1
0
SW_A
X
PTC DEBUG
X
0
X
SELECT PTC OR BCM DEBUG
COM/MON
X
0
O b j e c t i v e
SELECT PTC OAD OR NOT
0
1
X
1
RxD
RS232C
SW_B
PC_SIM
X
1
1
External +5V/+12V OUT & External power Detect
c l o s e t o p i n
$0.21
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 ]
c l o s e I C 1 8 0 0
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.
5V_DET_HDMI_4
D
80
3
DDC_SDA_1
10K
R818
D1+_HDMI2
HDMI_CEC
D0-_HDMI1
GND
20
33
20
95
G
A
E
2_I
M
D
H
JK800
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
JP800
CK-_HDMI4
68K
R819
D0+_HDMI2
0
R806
D2-_HDMI2
HPD4
10K
R811
CK+_HDMI1
D0+_HDMI4
1K
R800
0
OPT
R807
1.8K
R803
HPD2
O
PT
D
80
2
O
PT
D
80
1
5V_DET_HDMI_2
O
PT
D
80
0
HDMI_CEC
1.8K
R814
DDC_SCL_4
HDMI_CEC
DDC_SDA_2
E
A
G
62
61
12
01
H
D
M
I_
SI
D
E
JK802
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
R817
1.8K
R801
D2+_HDMI4
CK-_HDMI2
10K
R809
D1-_HDMI2
DDC_SCL_1
CK+_HDMI4
JP801
20
33
20
95
G
A
E
1_I
M
D
H
JK801
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
0.1uF
16V
C805
5V_DET_HDMI_1
GND
10K
R812
D0-_HDMI2
CK-_HDMI1
0.1uF
16V
C801
D1-_HDMI1
DDC_SDA_4
A
V
R
L
16
1A
1R
1N
T
V
R
80
0
0
R816
1K
R813
68K
R828
10K
R810
1K
R802
D1+_HDMI4
3
.3
K
R
81
5
DDC_SCL_2
0.1uF
16V
C802
5V_HDMI_4
HDMI_ARC
D2-_HDMI4
HDMI_CEC
D2+_HDMI2
5V_HDMI_2
D0-_HDMI4
+3.5V_ST
10K
R821
D1-_HDMI4
D2+_HDMI1
D2-_HDMI1
3
.3
K
R
80
4
CEC_REMOTE_S7
3
.3
K
R
80
5
HPD1
0.1uF
16V
C800
5V_HDMI_1
D1+_HDMI1
0
R808
100
R820
ENKMC2838-T112
D804
A
1
C
A
2
ENKMC2838-T112
D805
A
1
C
A
2
2.7K
R822
2.7K
R826
2.7K
R825
5V_HDMI_4
+5V_Normal
DDC_SDA_4
0.1uF
C806
DDC_SCL_1
DDC_SDA_2
5V_HDMI_2
DDC_SDA_1
+5V_Normal
0.1uF
C803
0.1uF
C804
ENKMC2838-T112
D806
A
1
C
A
2
5V_HDMI_1
DDC_SCL_2
DDC_SCL_4
+5V_Normal
2.7K
R823
2.7K
R827
2.7K
R824
SI1012CR-T1-GE3
Q803
S
D
G
MMBT3904(NXP)
Q800
E
B
C
MMBT3904(NXP)
Q801
E
B
C
MMBT3904(NXP)
Q802
E
B
C
20111008
37LT670H-UA
HDMI
8
HDMI_1
HDMI_2
For CEC
SIDE_HDMI
HDMI EEPROM
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