TCL LED32B2600 Service Manual page 26

DEMOD CIRCUIT
XTAL
R102 XTAL_OUT
C139 33P
0R
R103
X101
1M
24M
XTAL_IN
C140 33P
DGND
VCC3V3
SYS_SCL
XTAL_OUT
XTAL_IN
MSPI_WP
IF_AGC
QP
QM
C145 0.1U
IF+
IF-
C142 0.1U
C143
0.1U
C144
0.1U
DGND
VCC3V3
1V2
TUNER CIRCUIT
Tuner AGC Close Tuner
ZTAGC ZTSDA
T
T
TU1
ZTSCL
T
ZT3V3
T
1
NC1
2
3V3
3 TUNER_VCC
TU1_SCL
SCL
4
SDA
TU1_SDA
5
ZTG1
GND
ZTG2
6 ZTG3
NC2
7
NC3
TU_IF+
DGND
8
IF_N
9 TU_IF-
IF_P
10
IF_AGC
ZTIF-
T T
ZTIF+
TU2
1
GND1
2
NC
3
GND2
4
VCC
5
SCL
DGND
6
SDA
7
IF_AGC
8
IF_P
9
IF_N
R119
TU_IF- 100R
R118
TU_IF+
100R
THE IC FOR MSB101A for DVB-T2
T
VCC3V3
RESET T
T T
ZDFCSZ
ZDFGND
ZDFDO ZDFWP
U102
MSPI_CSZ 1 8
CS VCC
R104 MSPI_DO 2 7
10K DO HOLD
R105
MSPI_WP 3 6
WP CLK
NC/33R
4 5
RESETN GND DIO
C138 NC/W25X40
NC/0.1U
C141
10U
DGND
DGND
VCC3V3
1V2
DGND
1 36
I2CS_SCL TS_D[6]
2 35
GND1 TS_D[7]
TSCLK
3 U101 34
XTAL_OUT TS_CLK
MSPI_CSZ
4 33
XTAL_IN MSPI_CSZ/SSPI_CLK MSPI_DO
5 32
AVDD_MPLL MSPI_DO/SSPI_DI
6 31 MSPI_DI
RFAGC MSPI_DI/SSPI_DO
MSB101A
7 30
IFAGC GND7 VCC3V3
RESETN 1V2
8 29
QP RESETZ MSPI_CLK
9 28
QM MSPI_CLK/SSPI_CSZ
10 27
GND2 VDD33_2
11 26
IP GND6
12 25
IM VDD2
DGND
TS_ERR IS LOW FOR I2C ADDRESS 0XD2
R101
10K TS_ERR IS HIGH FOR I2C ADDRESS 0XF2
VCC3V3
DGND
MS306B DVB-T2 chassis is on MSB101A for U101
MS306C DVB-T chassis is on MSB101T for U101
MS306D ISDB-T chassis is on MSB101S for U101
R130 for MS306 ATV
0R R130
0.1U
NC
C102
TU_AGC Q101
R132
100R TU_AGC L101
TUNER-3V3
500R
TUNER_VCC
L102
TUNER_VCC
R128
1R 1/4W
100K
R129
C105 C106 C107
4U7 10K
C104
0.01U 1U 470U
C103
0.1U
6V3
R127
C
Q104 100K
B
BT3904
E
DGND
Close Tuner
DGND
R123
TU1_SCL
75R TUNER_SCL
C108
100P
NC
DGND
R122
75R TUNER_SDA
TU1_SDA
C109
100P
NC
DGND
R120
SYS_SDA NC/0R TUNER_SDA
R121
R120;R121 for MS306 ATV
NC/0R TUNER_SCL
SYS_SCL
C110
L105
L103 VIFM
0.1U
IF- 1UH 2.2UH
C113 C112
56P 33P
C111
L106 L104
0.1U
1UH 2.2UH VIFP
IF+
VCC3V3
CONFIG
VCC3V3
WP
CONFIGURE
ZDFVCC
T
R106
T
T
NC/10K
ZDFCLK
MSPI_CLK ZDFDI
MSPI_WP
MSPI_DI
R107
NC/10K
DGND
POWER
VCC3V3
C132 C131
C129
C130
C133
0.1U 0.1U
0.1U 0.1U
1U
DGND
+1V2_VDDC
1V2
L107
120R
C125
C126 C124
C127
0.1U 0.1U
0.1U
10U
DGND
100R R131
NC
BT3906
Q102
TAGC TU_AGC
IF_AGC_DM
BT3906
TUNER_VCC
R125
100K
R126
1K
R124
C
Q103 100K IF-AGC-SEL
B
BT3904
E
DGND
For silicon Tuner Supply
ZT3V3F
T
TUNER-3V3
172mA
U103
AS1117-3.3
ZT5V
T
5VAIN
C114 C115
C116
0.1U 2U2
C117
0.1U
4U7
DGND
TS_CLK R109
TSCLK
47R
R110
R108 TS_VLD TSVLD
47R
10K
R111
TS_SYNC TSSYNC
47R
C135
NEAR IC
C134 C136
22P 22P 22P
DGND
DGND
R116
TS0
TS_D0
47R
C128
0.1U
FOR DEMOD IC SUPPLY
VCC3V3
ZD3V3
T
U104
AS1117-3.3
ZD5V
T
5VAIN
C120 C119
C121 C122
0.1U 2U2
C123
0.1U
1U
220U
16V
DGND
VCC3V3
R112 R113
4K7 4K7
VCC3V3
TUNER_SDA
TUNER_SCL
R114
10K
R115
IF_AGC_DM 0R IF_AGC
DEMOD TUNER IF AGC
C137
0.022U
NEAR IC
DGND