Read LG 37LH40 / 37LH41 (CHASSIS:LA92G) 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.
5.1K
R1068
OPT
100uF
16V
C1077
VCOMO
001:D24
500
L1005
OPT
0.1uF
16V
C1037
OPT
FE_DEMOD_SDA
100uF
16V
C1035
22
R1078
100uF
16V
C1019
0
5%
1/4W
R1034
VSB_CTRL
FE_TUNER_SCL
10uF
10V
C1051
OPT
TS_VALID
22
R1077
+3.3V_PVSB
100
R1064
10uF
10V
C1011
20K
R1011
R1011
+3.3V_AVDD_PVSB
25MHz
X1005
+12V
3216
10uF
16V
C1038
1uF
10V
C1073
+3.3V_DVDD_PVSB
LGDT3305
IC1004
1
NC_1
2
VINA2
3
VINA1
4
INCAP
5
VSSAAD10A
6
I2CSEL
7
ANTCON
8
VDD_1
9
I2CRPT_SCL
10
I2CRPT_SDA
11
IFOUT
12
RFOUT
13
TPERR
14
VDD33_1
15
TPVALID
16
TPDATA[0]
17
VSS33_1
18
TPDATA[1]
19
TPDATA[2]
20
TPDATA[3]
21
TPDATA[4]
22
TPDATA[5]
23
TPDATA[6]
24
TPDATA[7]
25TPCLK
26TPSOP
27NIRQ
28SDA
29VDD33_2
30SCL
31VSS_1
32VDD_2
33VSS_2
34VSS33_2
35PLLAVDD
36PLLAVSS
37
N R
S T
38
O PM
39
VDD33_3
40
NC_2
41
VSS33_3
42
XTALI
43
X T
A L
O
44
VSS_3
45
X M
46
VDD_3
47
VSSDAD10
48
V C
C A
A D
1 0A
KIA78R05F
IC1002
1
VIN
2
V C
3
V O
U T
4
N C
5
G N
D 1
6
G N
D 2
0.1uF
50V
C1020
0.01uF
25V
C1008
10K
R1008
+3.3V_AVDD_PVSB
1/16W
100
AR1072
500
L1006
OPT
TS_CLK
22
R1023
220nH
L1011
IF BEAD
ISA1530AC1
Q1001
E
B
C
OPT
R1066
TS_VALID
SC156515M-1.8TR
IC1001
2
VIN
1
EN
3
GND
5
ADJ
4
VO
TDVW-H103F
TU1001
14
IF_AGC
13
DIF[-]
5
RF_AGC
12
DIF[+]
11
NC_3
2
NC_2
19
VIDEO
18
AUDIO
10
AS
4
+B1
1
NC_1
17
NC_4
9
CLOCK
8
DATA
3
GND_1
16
SIF
7
GND_2
6
NC[VT]
15
+B2
20
SHIELD
0.1uF
C1067
100
R1028
OPT
TS_DATA[0-7]
OPT
R1067
+5V_TU
1uF
16V
C1010
36pF
50V
C1046
OPT
8.2K
R1015
+3.3V_AVDD_PVSB
+1.2V_PVSB
0.1uF
50V
C1021
OPT
220nH
L1012
IF BEAD
BG2012B800
L1010
+3.3V_PVSB
0.01uF
50V
C1009
+1.2V_DVDD_PVSB
MLB-201209-0120P-N2
L1013
TS_SYNC
GND
0
R1027
0.1uF
50V
C1026
CM2012F6R8KT
6.8uH
L1004
0.01uF
C1069
0.01uF
C1070
FE_TUNER_SDA
15K
R1014
0.01uF
25V
C1041
FE_SIF
001:W30
27pF
50V
C1072
10K
R1000
36pF
50V
C1045
OPT
0
OPT
R1018
0.1uF
50V
C1032
CB3216PA501E
L1009
47K
R1074
47
R1016
OPT
OPT
R1009
+5V_TU
470
R1010
ISA1530AC1
Q1000
E
B
C
IF_AGC
0
R1021
TS_CLK
FE_TUNER_SCL
220uF
16V
C1013
+3.3V_DVDD_PVSB
22
R1022
0.047uF 50V
C1012
12K
R1007
0.1uF
50V
C1016
220uF
16V
C1054
100
OPT
R1075
0.1uF
50V
C1007
0.1uF
50V
C1003
0
R2232
500
L1008
0.1uF
50V
C1022
+5V_TU
0.1uF
C1066
AS7809DTRE1
IC1003
2
GND
3
OUTPUT
1
INPUT
4.7K
R1017
JP1005
IF_AGC
0
R1073
OPT
0.1uF
50V
C1044
27pF
50V
OPT C1025
OPT
R1076
CM3216F100KE
10uH
L1001
+5V_TU
SIFMO
001:W30
470
PV
R1069
100pF 50V
C1015
VSB_RESET
IF_N
+3.3V_FE
+5V_TU
0
R1026
0.1uF
16V
C1034
OPT
C1075
JP1006
SC4215ISTRT
IC1000
3
VIN
2
EN
4
NC_2
1
NC_1
5
NC_3
6
VO
7
ADJ
8
GND
100
AR1070
500
L1003
OPT
2.2uF
16V
C1000
270
R1019
3216
10uF
16V
C1028
+5V_TU
2.2K
R1004
OPT
0
R1005
0.01uF
25V
C1053
OPT
0.1uF
C1068
0.1uF
C1040
CB3216PA501E
L1007
270
R1020
0.
1u
F
50V
C1014
IF_P
0.1uF
50V
C1033
82pF
50V
C1004
47uF
16V
C1039
FE_DEMOD_SCL
0.1uF
16V
C1076
10K
R1012
R1012
FE_TUNER_SDA
TS_SYNC
1M
R1072
1N4148W D1000
100
R1030
OPT
0.1uF
50V
C1052
OPT
0
R1065
+3.3V_PVSB
+3.3V_DVDD_PVSB
100
AR1071
100pF
50V
C1017
OPT
C1074
0.1uF
50V
C1043
JP1007
4.7K
R1013
+1.2V_DVDD_PVSB
1K
R1002
POWER_EN
001:AR30;007:AH18
IF_P
PV
LD1000
JP1004
4.7K
R1001
100uF
16V
C1018
0.33uF
16V
C1036
1K
R1060
IF_N
2.2uF
16V
C1001
100uF
16V
C1002
10K
R1006
OPT
0
R1003
+5V_EXT
3216
10uF
16V
C1023
FE_VMAIN
001:D24
0
R1031
OPT
1K
R1063
0.1uF
50V
C1005
0.1uF
50V
C1030
27pF
50V
C1071
+1.2V_PVSB
27pF 50V
OPT C1024
0
L1011-*1
IF 0OHM
0
L1012-*1
IF 0OHM
0
R1061
0
R1062
100
R1032
100
R1033
47pF
C1006
270nH
L1002
TS_DATA[0]
TS_DATA[7]
TS_DATA[2]
TS_DATA[3]
TS_DATA[1]
TS_DATA[6]
TS_DATA[4]
TS_DATA[5]
TS_DATA[0-7]
TS_DATA[0-7]
VDD33
I2CRPT_SDA
NIRQ
JTAG
TPDATA[1]
VDD33
PLLAVSS
V DD
VSS33
VCCAAD10A
VSS
VDD
VDD33
RF OUT
VSB +3.3V B+ BLOCK
TPSOP
Close to tuner
SCL
TPDATA[0]
The value of coil & cap
could be changed to optimized each
VSS33
MStar Application
TPDATA[3]
VSS33
VSSAD10
TPERR
(I2C Channel 6)
X TA
L O
SDA
VDD
INCAP
TPVALID
MStar Application
TPDATA[7]
TPDATA[4]
PLLAVDD
TPCLK
NRST
I2CRPT_SCL
SLIM_SCAN
TPDATA[5]
VSS
TPDATA[6]
X M
Option for FM Rejection
VINA1
VSS
I2CSEL
IF OUT
R1
VSB +1.0V B+ BLOCK
R2
O PM
VINA2
VSSAAD10A
VROA
XTALI
ANTCON
MStar Application
V0 = 0.8(R1+R2) / R2
TPDATA[2]
UNER
C
2009
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