LG 55LS675H (CHASSIS:LA2AG) Service Manual ▷ View online
U
S
B
D
O
W
N
S
T
R
E
A
M
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.
PCM_D[5]
PCM_D[4]
PCM_D[0]
PCM_D[6]
PCM_D[2]
PCM_D[3]
PCM_D[7]
PCM_D[1]
C606
1000pF
50V
R601
100
100
JP602
+3.5V_ST
LED_R
C604
0.1uF
16V
JP603
JP601
D600
5.6V
AMOTECH
R603
10K
1%
C602
100pF
50V
C601
0.1uF
+3.5V_ST
C600
0.1uF
R607
1.5K
+3.5V_ST
JP605
R604
22
R602
10K
1%
JP604
KEY1
R605
47K
IR_47K_PULL_UP
IR
KEY2
R600
100
100
D601
5.6V
5.6V
AMOTECH
ZD600
5.6V
L600
BLM18PG121SN1D
L601
BLM18PG121SN1D
L602
BLM18PG121SN1D
C605
0.1uF
16V
OPT
PCM_A[2]
PCM_A[4]
/PCM_IRQA
/PCM_IORD
PCM_D[0-7]
/PCM_REG
PCM_A[9]
PCM_A[7]
PCM_A[12]
/PCM_CE
PCM_RST
PCM_A[13]
PCM_A[14]
PCM_A[3]
PCM_A[11]
PCM_A[1]
/PCM_WAIT
/PCM_WE
PCM_A[8]
PCM_A[10]
PCM_A[6]
/PCM_CD
/PCM_OE
PCM_A[5]
PCM_5V_CTL
PCM_A[0]
/PCM_IOWR
R706
470K
470K
SIDE_USB_DM
PC_L_IN
002:T12
USB1_OCD
R702
47
PC_R_IN
002:T11
+3.3V_Normal
C701
10uF
10V
10uF
10V
C703
100pF
50V
L700-*1
CIS21J121
IC700
AP2191DSG
EAN61849601
3
IN_2
2
IN_1
4
EN
1
GND
5
FLG
6
OUT_1
7
OUT_2
8
NC
R700
2K
1/8W
5%
L700
MLB-201209-0120P-N2
120-ohm
R703
10K
10K
USB1_CTL
D701
5.6V
AMOTECH
R701
2K
1/8W
5%
C704
100pF
50V
50V
R704
4.7K
OPT
4.7K
OPT
SIDE_USB_DP
R707
15K
15K
R712
0
0
C702
0.1uF
R710
10K
R705
470K
470K
D702
5.6V
AMOTECH
C700
22uF
16V
R711
0
0
R709
10K
JK700
PEJ027-01
Sn_PC_AUDIO
6B
T_TERMINAL2
7B
B_TERMINAL2
5
T_SPRING
4
R_SPRING
7A
B_TERMINAL1
6A
T_TERMINAL1
3
E_SPRING
R708
15K
15K
JK700-*1
PEJ027-04
Au_PC_AUDIO
6B
T_TERMINAL2
7B
B_TERMINAL2
5
T_SPRING
4
R_SPRING
7A
B_TERMINAL1
6A
T_TERMINAL1
3
E_SPRING
+5V_USB
R651
22
Q601
MMBT3904(NXP)
E
B
C
R613
47K
+3.5V_ST
R612
1K
+3.5V_ST
IR_OUT
Q600
MMBT3904(NXP)
OPT
E
B
C
R652
10K
10K
OPT
R653
0
R610
1K
OPT
R605-*1
3.3K
IR_3.3K_PULL_UP
C607
18pF
50V
18pF
50V
OPT
C603
18pF
50V
18pF
50V
OPT
ZD601
5.48VTO5.76V
OPT
SENSOR_SDA
ZD602
5.48VTO5.76V
OPT
SENSOR_SCL
P600
12507WR-10L
1
2
3
4
5
6
7
8
9
10
11
P700
3
A
U
0
4
S
-
3
0
5
-
Z
C
-
(
L
G
)
1
2
3
4
5
R621
100
R620
100
20111008
6
37LT670H-UA
IR/CONTROL-L
IR & LED
CONTROL
NON CI Region
$0.077
USB_DIODES
PC AUDIO
IR OUT
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
DDC_SDA_1
R818
10K
D1+_HDMI2
HDMI_CEC
D0-_HDMI1
JK800
EAG59023302
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
JP800
CK-_HDMI4
D0+_HDMI2
R806
0
D2-_HDMI2
HPD4
R811
10K
CK+_HDMI1
D0+_HDMI4
R800
1K
R807
0
OPT
R803
1.8K
HPD2
D802
OPT
D801
OPT
5V_DET_HDMI_2
D800
OPT
HDMI_CEC
R814
1.8K
DDC_SCL_4
HDMI_CEC
DDC_SDA_2
JK802
EAG62611201
HDMI_SIDE
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
R817
10K
R801
1.8K
D2+_HDMI4
CK-_HDMI2
R809
10K
D1-_HDMI2
DDC_SCL_1
CK+_HDMI4
JP801
JK801
EAG59023302
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
5V_DET_HDMI_1
R812
10K
D0-_HDMI2
CK-_HDMI1
C801
0.1uF
16V
0.1uF
16V
D1-_HDMI1
DDC_SDA_4
R816
0
R813
1K
R810
10K
R802
1K
D1+_HDMI4
R815
3.3K
DDC_SCL_2
C802
0.1uF
16V
0.1uF
16V
5V_HDMI_4
HDMI_ARC
D2-_HDMI4
D2+_HDMI2
5V_HDMI_2
D0-_HDMI4
D1-_HDMI4
D2+_HDMI1
D2-_HDMI1
R804
3.3K
R805
3.3K
HPD1
C800
0.1uF
16V
0.1uF
16V
5V_HDMI_1
D1+_HDMI1
R808
0
D804
ENKMC2838-T112
A
1
C
A
2
D805
ENKMC2838-T112
A
1
C
A
2
R822
2.7K
R826
2.7K
R825
2.7K
5V_HDMI_4
+5V_Normal
DDC_SDA_4
C806
0.1uF
DDC_SCL_1
DDC_SDA_2
5V_HDMI_2
DDC_SDA_1
+5V_Normal
C803
0.1uF
C804
0.1uF
D806
ENKMC2838-T112
A
1
C
A
2
5V_HDMI_1
DDC_SCL_2
DDC_SCL_4
+5V_Normal
R823
2.7K
R827
2.7K
R824
2.7K
Q800
MMBT3904(NXP)
E
B
C
Q801
MMBT3904(NXP)
E
B
C
Q802
MMBT3904(NXP)
E
B
C
BSS83
Q803
S
B
D
G
Q805
MMBT3904(NXP)
E
B
C
GND
R830
10K
GND
R831
10K
POWER_ON/OFF1
BSS83
Q804
S
B
D
G
C805
0.1uF
16V
0.1uF
16V
+3.5V_ST
R829
10K
GND
GND
Q806
MMBT3904(NXP)
E
B
C
HDMI_CEC
R833
10K
C807
0.1uF
16V
0.1uF
16V
CEC_REMOTE_PTC
CEC_REMOTE_S7
R832
150K
R836
0
R835
0
R828
470K
R821
33K
+5V_ST
+3.5V_ST
+5V_ST
20111008
37LT670H-UA
HDMI
8
HDMI_1
HDMI_2
SIDE_HDMI
HDMI EEPROM
For CEC
From HDMI Connector
THERMAL
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.
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.
C1008
220pF
+3.5V_ST
RS232_TX
010:N20
R1014
100
R1017
100
R1003
0
D1000
SDC15
SDC15
A1
C
A2
UART3_TX
010:E20;022:N15;022:Y25;022:AC7
R1029
100
TP1000
UART3_TX
010:E27;022:N15;022:Y25;022:AC7
C1007
220pF
220pF
R1006
0
R1010
0
+3.5V_ST
R1011
0
+3.5V_ST
C1000
0.1uF
0.1uF
P1000
SPG09-DB-009
1
2
3
4
5
6
7
8
9
10
C1005
0.33uF
R1009
100
R1019
100
RESET_high
022:H27
R1025
10K
PTC_TX_S7 001:AB18;001:AM23
PTC_RX_S7_3.3V 001:AB19;001:AL24
PTC_TX
022:X9
TP1001
R1023
1K
Update_SW
022:F22
S7_TX
001:AB18;001:AL24
R1000
47K
R1015
100
R1026
10K
R1020
100
PTC_RX_5V
022:U7
UART_SWB
022:AA21
C1001
0.1uF
0.1uF
UART3_RX
010:N19;022:N14;022:Y25;022:AC8
+3.5V_ST
UART3_RX 010:J25;022:N14;022:Y25;022:AC8
R1001
0
R1008
100
RS232_RX
010:N20
R1002
0
UART_SWA
022:AA21
R1005
0
R1021
10K
10K
JP1002
+3.5V_ST
C1003
0.047uF
0.047uF
S7_RX
001:AB18;001:AL23
R1018
100
R1007
47K
R1012
100
C1006
0.1uF
0.1uF
JP1001
R1013
100
RS232_RX
010:W22
R1027
0
JP1000
D1001
SDC15
SDC15
A1
C
A2
EXT_PTC_UPDATE
001:AG6
R1024
1K
RS232_TX 010:W22
C1002
0.33uF
IC1002
MAX3232CDR
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
C1004
0.33uF
R1022
10K
10K
EXT_PTC_RESET
001:AG6
R1004
0
R1016
100
+3.5V_ST
R1030
100
R1028
100
IC1000
HEF4053B
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
IC1001
HEF4053B
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
Q1000
MMBT3904(NXP)
E
B
C
Q1001
MMBT3904(NXP)
E
B
C
IR_OUT
+3.5V_ST
EXT_12V
EXT_5V
L1000
OPT
L1002
OPT
L1001
OPT
D1003
50V
BAP70-02
R1031
1K
R1044
1K
1K
OPT
R1037
20K
1/16W
1%
1/16W
1%
OPT
C1014
0.1uF
50V
0.1uF
50V
OPT
R1032
18K
OPT
C1022
470pF
50V
470pF
50V
OPT
L1004
CB3216PA501E
OPT
+24V
C1011
22uF
25V
22uF
25V
OPT
C1009
150pF
50V
150pF
50V
OPT
R1033
150K
150K
OPT
D1002
MBRA340T3G
OPT
L1003
22UH
22UH
OPT
R1034
100K
100K
OPT
EXT12V_CTRL
L1007
CB3216PA501E
OPT
R1038
270K
270K
1/16W
1%
1%
OPT
+12V/EXT
C1012
0.1uF
50V
OPT
C1013
3.3uF
50V
3.3uF
50V
OPT
IC1005
MP5000DQ
OPT
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
R1035
200K
200K
1/8W
1%
1%
OPT
IC1003
MP4460DQ-LF-Z
OPT
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
+12V/EXT
C1010
0.1uF
50V
OPT
R1036
22
22
OPT
EXT_12V
C1023
0.1uF
50V
50V
OPT
C1021
22uF
16V
22uF
16V
OPT
C1020
22uF
16V
22uF
16V
OPT
L1005
3.6uH
3.6uH
NR8040T3R6N
OPT
C1018
0.1uF
0.1uF
50V
OPT
EXT_5V
IC1004
TPS54327DDAR
OPT
3
VREG5
2
VFB
4
SS
1
EN
5
GND
6
SW
7
VBST
8
VIN
9
[EP]GND
R1043
10K
10K
OPT
+12V/EXT
C1016
1uF
10V
1uF
10V
OPT
C1017
3300pF
50V
3300pF
50V
OPT
EXT5V_CTRL
C1019
10uF
25V
10uF
25V
OPT
C1015
100pF
OPT
L1006
BLM18PG121SN1D
OPT
R1040
56K
56K
1%
OPT
R1050
100
100
OPT
R1049
100K
100K
OPT
D1004
OPT
A2
C
A1
EXT_12V
R1046
200
OPT
IC1006
APX803D29
OPT
1
GND
3
VCC
2
RESET
R1048
2.4K
2.4K
OPT
R1047
1.2K
1/16W
1.2K
1/16W
OPT
C1024
0.1uF
16V
OPT
0.1uF
16V
OPT
EXT_5V
EXT_PWR_DET
R1039
20K
20K
1/16W
1%
1%
OPT
R1041
3K
3K
1%
OPT
R1042
10K
1%
OPT
R1045
51
51
OPT
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
Objective
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
close to pin
$0.21
Switching noise reducing [MPS recommend]
close IC1800
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.
RXB3-
RXB4+
RXA3+
R1102
3.3K
3.3K
OPT
C1104
1000pF
50V
1000pF
50V
OPT
C1101
1000pF
50V
1000pF
50V
OPT
RXB2+
+3.3V_Normal
C1105
0.1uF
16V
0.1uF
16V
HD
RXA2-
PANEL_VCC
C1100
10uF
16V
10uF
16V
OPT
R1103
10K
OPT
RXB4-
RXB0-
PANEL_VCC
RXA0+
RXB3+
RXA1-
RXB1-
P1101
FF10001-30
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
PWM_DIM
RXA1+
P1100
FI-RE51S-HF-J-R1500
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
RXA3-
RXBCK-
RXB2-
RXA1+
C1102
0.1uF
16V
0.1uF
16V
FHD
RXA0-
R1107
3.3K
3.3K
OPT
RXACK-
+3.3V_Normal
R1105
10K
10K
OPT
R1101
10K
10K
OPT
R1106
0
OPT
RXA4-
RXA3+
RXA2+
RXA3-
RXA2+
RXACK-
RXB1+
RXACK+
RXA0+
R1108
10K
10K
OPT
RXA4+
+3.3V_Normal
C1103
10uF
16V
10uF
16V
OPT
RXA2-
R1100
0
OPT
RXA0-
RXA1-
RXACK+
RXB0+
RXBCK+
L1101
70-ohm
HD
L1100
70-ohm
FHD
R1104
3.3K
3.3K
OPT
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)
(For HD 60Hz_Normal)
RXB3+
RXA0-
LVDS for large inch
RXA3+
RXA1+
RXB0-
RXA2+
RXACK-
RXBCK+
RXACK+
RXA0+
RXB2+
RXB3-
RXBCK-
RXACK+
RXA2+
RXB4-
RXB2-
RXBCK-
RXA3+
RXB2-
RXA4-
RXB2+
RXB1-
RXB2-
Shift
Change in S7LR
RXA1-
Pol-change
RXB4-
RXB4+
RXBCK-
RXB4-
RXB0-
RXA3-
RXB3-
[51Pin LVDS Connector]
(For FHD 60Hz)
(For FHD 60Hz)
RXB1-
RXA4+
RXB4+
LVDS_SEL
RXA4-
RXA2+
RXB0+
RXB2-
RXA4-
RXB3-
RXA1+
RXACK+
RXB0+
RXB2+
RXACK+
RXA1+
RXB3-
RXA4-
RXB3+
RXBCK+
RXB0-
RXB0+
RXB0-
RXB2-
RXA3+
RXA2-
RXA1-
RXA4-
OPC_SEL
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-
BIT_SEL
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-
Click on the first or last page to see other 55LS675H (CHASSIS:LA2AG) service manuals if exist.