Haier LE32B7500 Service Manual page 57

Silicon Tuner
AGND
TU101
ST33WS-2-E
300mA
1
ANT
2
Tuner3.3V
3.3V
3
SCL_CAN
SCL
4
SDA_CAN
SDA
5
C131
GND
6 1uF 10V
GPIO1
7 AIF+
IF_N
8 AIF-
IF_P
9 IF_AGC
IF_AGC
C133
1N 50V
AGND
AGND
AGND
BPF_IN
C136
100PF 50V
AIF+ L102
0R05 1/10W
AIF-
L101
0R05 1/10W
C142
100PF 50V
L need Q>15
AGND
IF_AGC Control Circuit
Close to Main chip
3.3V_TUNER
R144
10K
TAGC
R146
2 TAGC
IF_AGC from IC
0R05 OHM
C140
22NF 25V
AGND
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300mA
DGND
+5V_Normal
U101
3
VIN
C127
3.3V_TUNER 10uF 10V C128
100N 16V
C132
1N 50V
DGND
DGND
AGND
close Tuner
C134
L103 TUN_IF+
0R05 1/10W
100N 16V
C135
NC/56pF 50V
C137
TUN_IF-
L104
0R05 1/10W
100N 16V
Close to Tuner
R101
IF_AGC
100R
To tuner
C141
100NF 16V
AGND
IF_AGC trace shielding by GND
Tuner Power 1K_100MHz/400_400MHz
3.3V_TUNER
3.3V_TUNER
FB101
2 1 2
VOUT
1000OHM
C129 C130
+
2.2UF 16V
100UF 16V C101
100N 16V
DGND
DGND DGND
Close to Main chip
T P V ( Top
絬 隔 瓜 絪 腹
Key Component 07. Tuner
Wednesday , Nov ember 20, 2013
Date
57
I2C for Tuner
3.3V_TUNER
R147 4.7K
R142 4.7K
close to main chip
R143
TUNER_SCL
Form main chip 100OHM
R145
TUNER_SDA
Form main chip
100OHM
Victory Electronics Co . , Ltd. ) OEM MODEL
TPV MODEL
PCB NAME
Sheet 7 of 9
Main Chip <-->
TUN_IF+
2 VIFP
TUN_IF-
2 VIFM
TUN_I2C_SCL
2 TUNER_SCL
TUN_I2C_SDA
2 TUNER_SDA
TP_SYNC[55]
TP_CLK[48]
TP_VALID[51]
TP_DI[54]
IF_CTL[47]
TUNER_SCL
TUNER_SCL 2
TUNER_SDA
TUNER_SDA 2
SCL_CAN
C138
NC/100pF 50V
SDA_CAN
AGND
C139
NC/100pF 50V
AGND
Size B
Rev A
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