AOC LE19D1331/30 Service Manual page 39

Tuner Power 3.3V_TUNER
300mA
+5V_Normal
U166
3 2
VIN VOUT
C127
10UF 10V C128
100N 16V
Tuner_GND
Tuner
LG TDST-H030F
TU101
TDST-H030F
1
Ant Power
2
N.C
3
SDA
4
SCL
5
+B1(3.3V)
6
N.C
7
N.C
15 8
TH4 N.C
14 9
TH3 IF AGC
13 10
TH2 DIF(P)
12 11
TH1 DIF(N)
Tuner_GND
R496 0R05 1/10W
R497 0R05 1/10W
R498 0R05 1/10W
R499 0R05 1/10W
1K_100MHz/400_400MHz
3.3V_TUNER
TP249
+
C129
C101
C130 100UF 16V
100N 16V
2.2uF 10V
Tuner_GND Tuner_GND Tuner_GND
3.3V_TUNER
C476 C477
22PF 50V
22PF 50V
TUNER_SDA Demod-M_SDA
R142 NC/100OHM
TUNER_SCL Demod-M_SCL
R143 NC/100OHM
TP251
TP250
C454
I2C_SDA
1NF 50V R155 0R05 1/16W
I2C_SCL
R156 0R05 1/16W
Tuner_GND
IF_AGC
TP252
IF_P
IF_N
R144 R145
NC/10K NC/10K
IF_AGC Control Circuit
IF_AGC from Demod
NC 100N 16V
Close U401 side
5 TAGC
11 D_IF_AGC
Close U101 side
IF_N
C148
IF_P NC/10PF 50V
Demod-M_SDA 11
Demod-M_SCL 11
I2C_SDA 5,6,11
I2C_SCL 5,6,11
C142
22PF 50V
C143
22PF 50V
Close to Tuner
T P V ( Top
絬 隔 瓜 絪 腹
Key Component
Date
39
Close Tuner (TU101) side
R101
100R
3.3V_TUNER
Tuner_GND
IF_AGC trace shielding by GND
C140 R161
10K
TP253
TAGC
R162 10K
R899
0R05 OHM C135
100N 16V
TP255
R731
0.05R
TP256
R733
0.05R
TP259
C131
L702 10uH 100N 16V
C144
NC/10PF 50V
TP260
C145 C132
NC/10PF 50V
100N 16V
L703 10uH
Close MST6931(U401) side
Victory Electronics Co . , Ltd. ) OEM MODEL
TPV MODEL
PCB NAME
10. Tuner
Thursday , December 06, 2012 Sheet 10 of
IF_AGC
To tuner
C141
100N 16V
TP257
D_IFN 11
TP258
D_IFP 11
A_IFN 5
C146
NC/4P7 50V
C147
NC/4P7 50V
A_IFP 5
B
Size
Rev A
<称爹>
称 爹
13