Read LG 47LH55 (CHASSIS:LA92B) 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.
3216
10uF
16V
C1028
+1.2V_DVDD_PVSB
+3.3V_PVSB
3216
10uF
16V
C1023
3216
10uF
16V
C1038
0
5%
1/4W
R1034
+1.2V_PVSB
+3.3V_AVDD_PVSB
+3.3V_DVDD_PVSB
+3.3V_PVSB
VSB_RESET
TS_DATA[0-7]
0.1uF
C1068
1K
R1063
TS_SYNC
22
R1077
TS_SYNC
0.1uF
C1067
0
R1065
TS_VALID
100
AR1070
+3.3V_DVDD_PVSB
TS_CLK
22
R1078
+3.3V_DVDD_PVSB
0
R1073
OPT
470
PV
R1069
1/16W
100
AR1072
PV
LD1000
FE_DEMOD_SCL
JP1004
1N4148W D1000
1M
R1072
FE_DEMOD_SDA
+3.3V_AVDD_PVSB
JP1007
+3.3V_AVDD_PVSB
1uF
10V
C1073
100
AR1071
OPT
R1076
TS_VALID
47K
R1074
0.01uF
C1070
OPT
R1075
OPT
R1066
JP1005
+1.2V_DVDD_PVSB
IF_AGC
JP1006
IF_N
0.01uF
C1069
5.1K
R1068
OPT
1K
R1060
100
R1064
IF_P
OPT
R1067
TS_CLK
0.1uF
50V
C1026
0.1uF
50V
C1030
0.1uF
50V
C1032
0.1uF
50V
C1033
0.1uF
50V
C1043
0.1uF
50V
C1044
FE_TUNER_SDA
FE_TUNER_SCL
0.1uF
C1066
100
R1061
100
R1062
SC156515M-1.8TR
IC1001
2
VIN
1
EN
3
GND
5
ADJ
4
VO
4.7K
R1001
100uF
16V
C1002
0.1uF
50V
C1020
15K
R1014
VSB_CTRL
100uF
16V
C1018
+3.3V_FE
8.2K
R1015
0.1uF
50V
C1003
1K
R1002
+3.3V_PVSB
CB3216PA501E
L1007
500
L1005
OPT
500
L1008
VCOMO
001:D24
10uF
10V
C1051
OPT
IF_P
270
R1019
+5V_TU
FE_SIF
001:W30
FE_TUNER_SDA
0
R1027
47
R1016
OPT
0.01uF
25V
C1008
82pF
50V
C1004
CM2012F6R8KT
6.8uH
L1004
+5V_TU
FE_VMAIN
001:D24
0
R1005
FE_TUNER_SCL
2.2K
R1004
OPT
22
R1022
0
OPT
R1018
+5V_TU
12K
R1007
10uF
10V
C1011
470
R1010
0
R1026
IF_N
SIFMO
001:W30
500
L1006
OPT
100pF
50V
C1017
10K
R1006
OPT
0.01uF
50V
C1009
270
R1020
OPT
R1009
GND
0.1uF
50V
C1021
OPT
0.1uF
50V
C1005
4.7K
R1017
22
R1023
4.7K
R1013
500
L1003
OPT
CM3216F100KE
10uH
L1001
10K
R1008
0.1uF
50V
C1007
27pF
50V
OPT C1025
0.
1u
F
50V
C1014
0.1uF
50V
C1052
OPT
+5V_TU
0.047uF 50V
C1012
OPT
IF_AGC
100pF 50V
C1015
0.01uF
25V
C1053
OPT
0
R1021
27pF 50V
OPT C1024
+5V_TU
0
R1031
OPT
27pF
50V
C1072
27pF
50V
C1071
220uF
16V
C1013
220uF
16V
C1054
36pF
50V
C1045
OPT
36pF
50V
C1046
OPT
0
R1033
0
R1032
220nH
L1012
IF_Coil
20K
R1011
R1011
SC4215ISTRT
IC1000
3
VIN
2
EN
4
NC_2
1
NC_1
5
NC_3
6
VO
7
ADJ
8
GND
100uF
16V
C1019
+1.2V_PVSB
0.1uF
50V
C1022
10K
R1012
R1012
+5V_EXT
MLB-201209-0120P-N2
L1013
0
R1003
ISA1530AC1
Q1000
E
B
C
ISA1530AC1
Q1001
E
B
C
OPT
C1074
OPT
C1075
100
R1030
OPT
POWER_EN
001:AR30;007:AH18
1uF
16V
C1010
CB3216PA501E
L1009
0.1uF
50V
C1016
47uF
16V
C1039
0.1uF
16V
C1037
OPT
AS7809DTRE1
IC1003
2
GND
3
OUTPUT
1
INPUT
+5V_TU
BG2012B800
L1010
100uF
16V
C1077
100
R1028
OPT
+12V
0.01uF
25V
C1041
0.1uF
16V
C1076
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
16V
C1034
0.33uF
16V
C1036
0.1uF
C1040
100uF
16V
C1035
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 P
M
39
VDD33_3
40
NC_2
41
VSS33_3
42
XTALI
43
X T
A LO
44
VSS_3
45
X M
46
VDD_3
47
VSSDAD10
48
V C
C A
A D
1 0A
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
20K
R1000
2.2uF
16V
C1000
2.2uF
16V
C1001
25MHz
X1005
0
R2232
220nH
L1011
IF_Coil
0
L1011-*2
IF_Short
0
L1012-*2
IF_Short
270nH
L1002
47pF
C1006
TS_DATA[1]
TS_DATA[6]
TS_DATA[2]
TS_DATA[4]
TS_DATA[5]
TS_DATA[0]
TS_DATA[3]
TS_DATA[0-7]
TS_DATA[0-7]
TS_DATA[7]
VSB +1.0V B+ BLOCK
VSB +3.3V B+ BLOCK
VDD33
VSSAD10
VCCAAD10A
V DD
VSS33
SLIM_SCAN
O PM
VSS
XTALI
TPDATA[1]
TPDATA[2]
TPDATA[3]
TPDATA[4]
TPDATA[5]
TPDATA[6]
TPERR
TPDATA[7]
VDD33
JTAG
TPVALID
TPDATA[0]
VSS33
VSSAAD10A
IF OUT
I2CRPT_SDA
I2CRPT_SCL
VINA1
I2CSEL
VINA2
RF OUT
VDD
INCAP
ANTCON
VROA
VSS
VDD33
SCL
TPCLK
SDA
VSS33
VDD
PLLAVDD
PLLAVSS
TPSOP
VSS
NIRQ
X M
XTALO
NRST
(I2C Channel 6)
Close to tuner
Option for FM Rejection
The value of coil & cap
could be changed to optimized each
V0 = 0.8(R1+R2) / R2
R1
R2
MStar Application
MStar Application
MStar Application
C
2009
TUNER
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