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.
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
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