Read LG 55LH45YD (CHASSIS:LC91B) 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.
R1108
240
R1119
10K
1/16W
5%
R1120
0
TU_IF_AGC
001:F3
BOOSTER
Q1103
2SC3875S(ALY)
E
B
C
+5V_TUNER
R1117
270
TU_SDA_5V
001:C6
R1114
0
C1111
0.01uF
25V
C1105
100pF
50V
+5V_TUNER
BOOSTER
+5V_TUNER
C1115
220pF
50V
OPT
FE_BOOSTER_CTL
Q1102
2SA1530A-T112-1R
E
B
C
Q1101
2SA1504S
E
B
C
+5V_TUNER
C1103
47pF
50V
C1113
100uF
16V
R1106
4.7K
R1118
270
R1105
47
R1104
47
R1109
240
RF_SWITCH_SEL
FE_SIF
R1116
0
OPT
R1110
82
Q1100
2SA1530A-T112-1R
E
B
C
TU_IF_OUT-
001:F2
R1112
0
R1113
OPT
TU_IF_OUT+
001:F2
C1114
0.1uF
16V
R1115
2.2K
FE_VMAIN
C1102
47pF
50V
R1103
0
R1107
0
OPT
TU_SCL_5V
001:C5
R1111
0
C1100
0.1uF
16V
C1101
0.1uF
16V
C1106
0.1uF
16V
R1100
47
C1112
0.01uF
25V
R1102
0
R1101
0
C1104
220uF
16V
C1107
220uF
16V
L1101
MLB-201209-0120P-N2
L1100
MLB-201209-0120P-N2
+5V_TUNER
TU1100
TDFR-Z751D
14
GND
13
NC_4
5
RF_AGC
12
TU_IF
11
NC_3
2
GAIN-SW
19
NC_7
18
SCL
10
NC_2
4
VTU
1
CTR
17
SDA
9
VIDEO
8
SIF
3
+B1
16
NC_6
7
NC_1
6
+B2
15
NC_5
24
SHIELD
20
IF_AGC
21
DIF1
22
DIF2
23
NC_8
L1104 CM2012FR47KT 0.47uH
C1110
39pF
50V
L1102
CM2012FR22KT
220nH
L1103
CM2012FR22KT
220nH
C1108
24pF
C1109
24pF
11 13
TUNER
2009. 1.15.
EAX60737402
Close to tuner
TUNER TDFR-Z751D
ROUTE SYMMETRICALLY
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