Read LG 42LH70YR (CHASSIS:LP91D) 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.
RL_ON
OPC_OUT2
0
NON_LGD
R1053
P_16V
10K
R1047
0.01uF
C1007
I-DIM
+5VST_MST
1.2K
R1005
10K
R1002
0.1uF
C1001
READY
C1020
0.01uF
C1008
SAM2333
LD1002
P_12V
2SC3875S
Q1002
1
2
3
0.01uF
C1046
+5VST_MST
P_12V
+16V_NTP
+12V_AUDIO
P_12V
P_5V
+5V_MULTI
0.1uF READY
C1024
P_16V
10uF
16
V
C1003
P_16V
0
READY
R1066
10K
R1003
DISP_EN/VAVS_ON
2SC3875S
Q1000
1
2
3
P_5V
P_5V
0
SBL
R1067
P_5V
+5V_MULTI
47uF
25
V
C1002
0.01uF
C1011
OPC_OUT1
2.2uF
16
V
C1045
READY
0.01uF
C1021
+5V_MULTI
+12V_LCD
P_12V
10K
R1006
10uF
25
V
C1031
+5V_MULTI
2K
R1009
RT1C3904-T112
Q1004
E
B
C
33K
R1049
0
R1073
10uF
C1016
BD9130EFJ-E2
IC1001
3
ITH
2
VCC
4
GND
1
ADJ
5
PGND
6
SW
7
PVCC
8
EN
0.1uF
C1015
1uF
25
V
C1047
10uF
16
V
C1019
1.6K
R1069
+1.8V_DDR
PANEL_ON
22K
R1070
+5V_USB
+5V_TUNER
100uF1
6V
C1009
10K
R1068
0.1uF
C1054
3.3K
R1010
+5V_MULTI
10uF
C1022
10uF
25
V
C1030
+5V_MEMC
+5V_MULTI
P_12V
0.1uF
C1014
RT1C3904-T112
Q1001
E
B
C
0.1uF
C1005
+1.2V_VDDC_MST
P_5V
+3.3V_MULTI_MST
10uF
16
V
C1000
0.01uF
C1010
MP2212DN
IC1006
3I
N
2
GND
4B
S
1F
B
5
VCC
6
SW_1
7
SW_2
8
EN/SYNC
0.1uF
C1023
+1.8V
33K
R1065
0.1uF
C1026
10K
R1048
1uF
C1048
POWER_SW
SI4925BDY EBK32753101
Q1003
3
S2
2
G1
4
G2
1
S1
5
D2_1
6
D2_2
7
D1_1
8
D1_2
10uF
16
V
C1029
100uF
16
V
C1028
1u
F
25V
C1035
+5VST_MST
AP2121N-3.3TRE1
IC1007
1
GND
2
VOUT
3
VIN
0.01uF
C1053
+3.3V_MST
10uF
16
V
C1052
30K
R1057
5.6K
R1058
100uF
16
V
C1017
12K
R1008
560pF
C1012
10K
R1001
2.2uF
C1044
AZ1085S-3.3TR/E1
IC1003
1
ADJ/GND
2
OUTPUT
3
INPUT
AP1117EG-13
IC1002
1
ADJ/GND
2
OUT
3
IN
2.2K
R1051
2.2K
R1050
2.2K
R1052
68uF
35
V
C1006
PANEL_STATUS
10uF
16
V
C1013
10uF
16
V
C1004
10uF
16
V
C1018
10uF
16
V
C1025
3.6uH
L1009
500
L1008
500
L1003
500
L1000
300
R1004
150
R1007
FM20020-24
P1000
19
N
C
14
12V
9
5.2V
4
GND
18
24V
13
12V
8
5.2V
3
GND
17
24V
12
GND
7
5.2V
2
Power_On
16
GND
11
GND
6
GND
1N
C
20
INV_ON
15
GND
10
5.2V
5
GND
21
A.DIM
22
Err_Out
23
N
C
24
PWM_DIM
25
120-ohm
L1001
120-ohm
L1004
120-ohm
L1005
120-ohm
L1006
120-ohm
L1007
120-ohm
L1010
120-ohm
L1012
120-ohm
L1013
120-ohm
MEMC
L1014
3K
R1046
2.2uH
L1002
10K
R1045
1K
R1011
68uF 35V
READY
C1027
10K
R1059
2K
R1018
0.1uF
C1032
0.1uF
C1034
2.2K
R1000
0.1uF
C1036
1uF
25
V
READY
C1038
1uF
25
V
READY
C1039
1uF
25
V
READY
C1040
1uF
25
V
READY
C1041
1uF
25
V
READY
C1037
1K
R1012
10
R1019
0
R1056
READY
0
R1055
0.1uF
C1033
2008/09/20
H6 LH70
7 9
POWER
LED Block
EAX58298501 Mstar LCD LH70
**DC-DC CONVERTER_READY 12V->5V_TUNER/USB
MAX 2A
MAX 3A
700mA + 415mA
**5V_MULTI-->1.2V
DDR2, Vref
**Switch 12V:P12V **Switch 5V:5V_MULTI -> 1.8V
R1
**5V_MULTI->3.3V->1.8V
MAX 1A
V0 = 0.8*(1+(R2/R1))
NTP,AUDIO DSP
OUT:3.3V
MAX 3A
OUT:5V
OUT:1.27V
*ST 5V->3.3V
R2
V0 = 1.25*(1+(R2/R1))
R2
R1
Close to Q1003
Click on the first or last page to see other 42LH70YR (CHASSIS:LP91D) service manuals if exist.