19LD330, 19LD340, 19LD345 (CHASSIS:LP91H) - LG TV Service Manual (repair manual). Page 26

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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.
R1003
10K
26_32INCH
0.01uF
C1046
50V
RL_ON
LD1002
SAM2333
0.01uF
C1057
50V
2SC3875S
Q1000
26_32INCH
1
2
3
0.01uF
C1011
50V
0.01uF
C1021
50V
R1065
33K
26_32INCH
C1056
1uF
25V
R1049
33K
R1048
10K
Q1001
RT1C3904-T112
E
B
C
0.01uF
C1010
50V
C1005
0.1uF
50V
C1009
100uF
16V
POWER_SW
R1002
10K
Q1003
SI4925BDY
EBK32753101
3
S2
2
G1
4
G2
1
S1
5
D2_1
6
D2_2
7
D1_1
8
D1_2
Q1004
RT1C3904-T112
E
B
C
R1068
10K
R1069
1.6K
R1070
22K
C1048
1uF
25V
0.01uF
C1053
50V
R1005
1.2K
P_3.5V
+16V_NTP
+3.5V_MST
P_12V_SMALL_15V
+3.5V_MST
+3.3V_MST
+5V_+12V_LCD
+3.5V_MULTI
+3.5V_MST
+5V_MULTI
P_12V_SMALL_15V
P_3.5V
+3.5V_MST
+3.5V_MULTI
PANEL_ON
C1058
0.1uF
50V
C1019
10uF
16V
C1045
10uF
16V
P_24V_SMALL_15V
R1065-*1
10K
19_22INCH
IC1006
MP2212DN
3
IN
2
GND
4
BS
1
FB
5 VCC
6 SW_1
7 SW_2
8 EN/SYNC
+3.5V_MULTI
R1056
10
19_22INCH
C1024
0.1uF
50V
19_22INCH
10K
R1059
26_32INCH
C1026
100uF
16V
READY
5.6K
R1058
D1001
50V
19_22INCH
10uF
C1030
25V
10uF
C1031
25V
C1000
10uF
16V
C1020
10uF
16V
+1.2V_VDDC_MST
C1054
0.1uF
50V
+1.8V_DDR
+1.8V
+3.5V_MULTI
C1014
0.1uF
16V
IC1001
BD9130EFJ-E2
3
ITH
2
VCC
4
GND
1
ADJ
5
PGND
6
SW
7
PVCC
8
EN
R1044
10K
R1045
2K
R1053
3.3K
C1016
10uF
10V
C1022
10uF
6.3V
C1015
0.1uF
50V
C1023
0.1uF
50V
R1043
12K
C1060
560pF
50V
C1055
2200pF
50V
READY
R1078
3.3
READY
C1059
10uF
16V
C1013
10uF
16V
C1017
10uF
16V
C1018
10uF
16V
IC1002
AP1117EG-13 
1
ADJ/GND
2
OUT
3
IN
R1050
2.2K
R1051
2.2K
R1052
2.2K
C1043
68uF
35V
R1012
0
26_32INCH
L1009
3.6uH
L1003
CIC21J501NE
500
L1008
500
R1054
120
R1055
56
L1004
120-ohm
L1005
19_22INCH
120-ohm
L1006
26_32INCH
120-ohm
L1007
120-ohm
L1013
120-ohm
C1035
1uF
25V
C1025
0.1uF
16V
L1002
2.2uH
R1020
10K
R1018
2K
26_32INCH
C1027
68uF
35V
READY
R1024
10
C1029
0.1uF
50V
+3.5V_MULTI
R1011
0
C1036
1uF
25V
READY
C1037
1uF
25V
READY
C1038
1uF
25V
READY
43K
R1057
0.1uF
C1040
50V
IC1004
AP1117EG-13 
1
ADJ/GND
2
OUT
3
IN
110
R1019
110
R1025
C1042
100uF
16V
0.1uF
C1039
50V
R1027
330
+5V_TUNER
R1026
330
+5V_USB
C1041
100uF
16V
READY
IC1000
AP1117EG-13 
1
ADJ/GND
2
OUT
3
IN
C1047
0.1uF
16V
C1049
0.1uF
16V
READY
C1033
0.47uF
50V
C1032
0.1uF
50V
P1000
FW20020-24S
26_32INCH
19
12V
14
GND
9
3.5V
4
24V
18
INV ON
13
GND
8
GND
3
24V
17
12V
12
3.5V
7
GND
2
24V
16
GND
11
3.5V
6
GND
1
Power on
20
A-Dim
15
GND
10
3.5V
5
GND
21
12V
22
P-Dim
23
GND/P-Dim2
24
Error out
R1028
0
19_22INCH
OLP
R1015
0
NON_19_22INCH
R1023
0
OPC_OUT
R1037
6.8K
OPT
+3.5V_MULTI
0
R1021
BIG_NON_AUO
0
R1017
BIG_AUO/IPS
DISP_EN/VAVS_ON
+3.3V_MULTI_MST
0
R1035
BIG_LGD/SHARP FHD
R1029
100
EXCEPT_BIGCMO
E-DIM
C1012
1uF
25V
OPT
R1030
100
BIG_CMO
Q1002
2SC3052
E
B
C
I-DIM
C1008
0.1uF
16V
OPT
R1047
10K
0
R1034
BIG_AUO
PANEL_STATUS
R1031
0
BIG_CMO
R1046
3.3K
R1032
0
19_22INCH
R1040
4.7K
READY
P1001
SMAW200-12
19_22INCH
1
15V
2
15V
3
GND
4
GND
5
3.5V
6
3.5V
7
GND
8
OLP
9
INVERTER_ON
10
PWM_Dim
11
A_Dim
12
NC
P_24V_SMALL_15V
P_24V_SMALL_15V
P_24V_SMALL_15V
P_3.5V
P_3.5V
P_12V_SMALL_15V
R1010
0
19_22INCH
R1001
4.7K
26_32INCH
L1010
120-ohm
READY
ZD1000
3.6V
READY
L1011
120-ohm
READY
ZD1001
3.6V
READY
C1061
100uF
16V
READY
C1004
1uF
25V
R1022
10
C1006
100uF
16V
L1001
3.6uH
C1007
0.1uF
50V
+3.5V_MULTI
+3.5V_MULTI
D1000
50V
19_22INCH
10uF
C1002
25V
R1014
0
P_12V_SMALL_15V
10uF
C1001
25V
R1036
10
19_22INCH
L1000
500
IC1003
MP2212DN
3
IN
2
GND
4
BS
1
FB
5 VCC
6 SW_1
7 SW_2
8 EN/SYNC
C1003
0.1uF
50V
C1064
0.1uF
50V
19_22INCH
15K
R1009
75K
R1008
+5V_MULTI
2SC3875S
Q1005
26_32INCH
1
2
3
R1004
0
READY
R1000
4.7K
26_32INCH
R1016
2K
26_32INCH
10K
R1013
26_32INCH
R1007
0
26_32INCH
R1061
4.7K
R1062
100K
R1066
4.7K
READY
R1067
100K
C1052
10uF
16V
C1050
0.1uF
50V
+3.5V_MULTI
C1071
10uF
16V
C1034
10uF
16V
C1072
0.1uF
16V
R1006
100K
READY
R1063
12K
1%
R1064
10K
1%
C1068
2.2uF
10V
C1070
2.2uF
10V
C1067
2.2uF
10V
C1065
2.2uF
10V
R8044
470K
R8043
470K
R1041
12K
1%
R1042
10K
1%
R1071
0
26_32INCH
R1072
0
19_22INCH
R1033
0
BIG_LGD
R1073
47K
READY
ZD1002
3.6V
READY
+3.3V_MULTI_MST
100uF
C1028
16V
READY
C1063
0.1uF
50V
C1062
10uF
6.3V
+1.8V
IC1008
AP1117EG-13 
1
ADJ/GND
2
OUT
3
IN
R1079
56
R1077
120
R1076
0
READY
+3.5V_MST
C1066
100pF
50V
READY
C1069
100pF
50V
READY
R1080
10K
C1044
2.2uF
10V
POWER_SW
R1081
10K
C1051
10uF
6.3V
C1073
0.1uF
50V
C1074
1uF
25V
READY
R1082
0
READY
R1083
0
SHARP HD
IC1007
MP20045DQ-LF-Z
3
VOUT_1
2
VIN_2
4
VOUT_2
1
VIN_1
5
FB
6
GND
7
PG
8
EN
9
EP[GND]
IC1005
MP20045DQ-LF-Z
3
VOUT_1
2
VIN_2
4
VOUT_2
1
VIN_1
5
FB
6
GND
7
PG
8
EN
9
EP[GND]
R1084
0
READY
1K
R1038
NON_OPC
1K
R1039
HD_OPC
R1060
6.2K
NON_OPC
R1075
6.2K
HD_OPC
180K
R1074
9  9
POWER
2009/12/23
LED Block
**5V_MULTI->3.3V->1.2V
**Switch 12V:P12V  **Switch 3.5V:3.5.V_MULTI
**DC-DC CONVERTER
OUT:6.8V
*ST 3.5V->3.3V
MAX 3A
OUT:1.27V
NTP,AUDIO DSP
DDR2, Vref
V0 = 0.8*(1+(R2/R1))
MAX 2A
R1
R2
MAX 1A
R1
R2
V0 = 0.8*(1+(R1/R2))
V0 = 1.25*(1+(R2/R1))
R1
R2
OUT:1.85V
Close to Q1003
R1
**DC-DC CONVERTER
R2
V0 = 0.8*(1+(R1/R2))
MAX 3A
LD330/LD420
LP91H
EAX61532102
LGD
PIN No
Err_out
V4:VBR-A
V5:VBR-A
PWM_DIM
<OS MODULE PIN MAP>
PWM_DIM
INV_ON
INV_ON
GND
PWM_DIM
18
SHARP
INV_ON
24
20
PWM_DIM
INV_ON
NC
Err_out
AUO
CMO(09)
A-DIM
22
NC
*12V -> 5V_MULTI
**12V->TUNER 5V
Err_out
IPS
NC
INV_ON
PWM_DIM
PWM_DIM
SMALL
A-DIM
INV_ON
NC
Err_out
closed IC1007
R1
MAX 1A
NTP,AUDIO DSP
OUT:1.85V
R2
Display
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