TCL L28E3500 Service Manual page 28

8 7
TDA18273+CAN_TUNER_ONBOARD_COMP SCH, VER1.0 2012-7-25
F
TU_3V3
TUNER_VCC
RT2
0R
E
1
S1
2
GND1
3
GND2
4
GND3
5
GND4
6
GND5
7
GND6
GND
TUN1
D
C
XOUT
IF_AGC
TUN2 NC/
B
A
8 7
6
Caution:
TU_3V3 must be from LDO
GND
TUNER_VCC
CT1 CT2 CT4
VCC1-RF
RT1
1
RFIN
0R
2
120P 120P NC1
82P
3
3 NC2
4
CT3
FT1 GND1
LT1 1 2 5
150P
AS_XTSEL
6
0BAV99
GND2
7
TEST1
0.33UH 8
TEST2
DT1 9
GND3
10
LT2
GND
0.22UH
GND
GND
CT33 CT34
22P
22P
GND
TU_3V3
TU3V3
T
T_SCL
T_SDA
1
ANT T T
CT30
TU_3V3
2
RT12
3V3
NC/
NC/ 33R
10U
3
SCL
RT13
4
SDA
T GND1
NC/ 33R
5
IF- IF+
GND CT29
T T NC/ CT28
22P
6
NC/
22P
7 GND
IF_N
8
IF_P
GND
9
CT38
CT37
NC/
22P NC/ 22P
IF_AGC
T
GND GND
RT14
NC/
1K
CT32
NC/
6800P
GND
6
5 4
GND
CT5
0.22U
GND
CT7
6800P
30
IRQ
29
VSYNC
RT7
28
VIFAGC 1K
27
TUNER_VCC
VCC-IF
26
UT1 RT8
GND7
CT10
25 0.1U
IFP 0R
TDA18273HN 24
0R
IFN
23 0.1U CT11
GND6 RT9
22
XTOUT2
21
XTOUT1 Z12
CT8 CT9
10P
10P
GND
RT6
430R
CT12
CT13
0.22U
2700P
GND
GND
CT16 CT17
30P 30P
XT16M
16M
Index-Lab DATE NAME DESCRIPTION
Last saved :
4
5
3
VIF+
VIF-
5V
TUNER_SCL C201
TUNER_SDA
R201
IF_AGC
RF_AGC
RF_AGC
10K
0.047U
C205
GND
SBU :
TCLNO: .............
DESIGNATION
Last modif
DESIGNATION
3
2 1
F
E
D
U201
AS1117-3.3 C
TU_3V3
T
300mA
TU_3V3
C203
C202 C204
220U
10U 0.1U 0.1U
GND 16V
GND GND
B
TCL Thomson Electronics Singapore Pte. Ltd.
A
8 Jurong Hall Road #28-01/06
The JTC Summit SINGAPORE 609434
Tel (65) 63092900 Fax (65) 63092999
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FORMAT DIN A2