Sharp LC-32FI5342E, Service Manual

Page: 40 / 70

40
3.9 Wiring diagram of Tuner
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
15
15
16
16
D D
C C
B B
A A
T_IFAGC__IC
RT8
RT6
+3.3V_M
RT12
RT10
CT27
CT32
T_VIFM_IC
T_VIFP_IC
VBG
CP
IFAGC_RT710
VBAT
LNB_PW
DET
RFIN
V
B
A
T1
Single ended:75ohm
(W=21mil,Gap=18mil)
2-Layers
Bead:
1k@100M & 400ohm
@400M,300mA& R(dc)<0.8 ohm
GND
GND
GND GND GND GND
GND
GND
GND
GND
GND
S2_SDA
S2_SCL
CS20 CS21 CS22 CS19
CS25
RS36
RS38
CS42 CS43
CS40
CS30
TUNER_SDA
TUNER_SCL
3V3_T � � _S2
1
2
3
4
5
RF
GND
GND
GND
GND
RFT3
RS1
RS2
DET
2
LT
3
VBAT
4
VBG
5
V
D
D
6
C
P
7
VON
14
VOP
15
VOPQ
12
VONQ
13
VA
G
C
10
GND
1
R
F_
IN
20
G
N
D
19
V
B
AT
18
SD
A
17
SC
L
�
16
X
TA
L_
O
9
X
TA
L_
I
8
CL � _OUT
11
EPAD
21
US1
X
TA
L_
O
_7
10
X
TA
L_
I_
71
0
LT14
S2_IP
S2_QP
1 3
2
DT2
GND CS34
CS37
CS39
S2_IN
S2_QN
LNB_PW
3V3_T � � _S2
S2_IP
S2_QP
S2_SDA
S2_SCL
GND
1
2
3
4
5
6
7
8
9
LNB
3.3V
AGC
IP
IN
QN
QP
SDA
SCL
11 12 13 14
GN
D
GN
D
GN
D
GN
D
10
CLK-OUT
RFT4
S2_IN
S2_QN
3V3_T � � _S2
S_IFAGC_IC
RS18
CS9
CS45
GND
+3.3V_M
IFAGC_S
RS39
CS33
CS38
CS35
CS36
IP_S
QM_S
IM_S
QP_S
LT11
GND
YT2
CS46
IF_IP
IF_QP
S2_IP
S2_QP
IF_IN
IF_QN
S2_IN
S2_QN
RT11
RT9
CT37
RT13
GND
GND
GND
GND
GND
GND GND
GND
GND
GND
GND
CT19
CT15
CT7
CT2 CT3
CT4
LT5
LT6
3V3_T � � _T
CT1
LT1
CT16
3V3_T � � _T
CT14
LT9
CT8
3V3_T � � _T
IFAGC_R842
IFN
IFP
LT3
RFIN2
2
TF1
3
TF2
4
DECT1
5
SCL
6
SD
A
7
AV
D
D
8
AVDD
18
VOP
17
VON
16
VAGC
15
D
V
SS
10
CP
9
RFIN
1
AV
D
D
24
TF
H
23
TF
L
22
G
PI
O
21
V
B
G
20
D
ET
2
19
GND
25
D
V
D
D
11
X
TA
L_
I
12
VAGC2
14
XTAL_O
13
UT1
LT2
GND
GND GND
1 3
2
DT1
RF_INPUT
LT4
R842_SDA
R842_SCL
CT10
CT12
GND
GND
CT5
3V3_T � � _T
CT6
LT7
CT33
LT13
GND
1
2
3
4
5
6
7
8
11 12 13 10
GN
D
GN
D
GN
D
GN
D
GND
3.3V
SCL
SDA
GND
NC
IF_N
IF_P 9
IF_AGC
RFT5
YT1
GND
RF
RT5
1
2
3
4
5
RF
GND
GND
GND
GND
6
GND
7
GND
RFT1
RT14
RT15
GND
CS23 CS24
GND GND
R� 9
C� 2
D � 1
C� 7 C� 8
�
L � 3
D � 4
D � 3
LNB_PW
C� 9
GND
GND GND
12V
GND
DISEQC_IC EXTM
R� 2
+3.3V_M
R� 5
R� 1
LNB_13V � 18V_SEL_IC R� 4
COMP
LNB_PWEN_IC
R� 6
GND
C� 1
VIN
4
EN 5
COMP
7
SEL
6
G
N
D
EP
A
D
LNB
1
B
O
O
ST
2
LX
3
TONE
8
RT5047
U � 1
L � 1
L � 4
R� 11
C� 11 C� 3
C� 12
RT16
RT17
R� 8
+3.3V_M
RT18
RT19
3V3_T � � _T
R48 R49
TUNER_SCL_IC
TUNER_SDA_IC
TUNER_SDA
TUNER_SCL T_MODLE_SCL
T_MODLE_SDA
T_IFN
T_IFP T_IFN
T_IFP
T_IFP
T_IFN
TUNER_SCL_IC
TUNER_SDA_IC
TUNER_SCL
TUNER_SDA
TUNER_SCL
TUNER_SDA
T_VIFP_IC
T_VIFM_IC
GND
T_IFAGC__IC
T_IFAGC
T_IFAGC T_IFAGC
CT21 CT43
IFAGC_S
GND
S_IFAGC_IC
LNB_PWEN_IC
LNB_13V � 18V_SEL_IC
DISEQC_IC
IFAGC_S
C
S4
8
C
S4
9
GND
GND
CT28
+3.3V_M
LT17
CT29
3V3_T � � _T
CT20
GND
CT39
CT42
C� 4
D � 2 D � 5
PCB 短路
RS21
PCB
短路
RS3
PCB 短路
RS12
PCB 短路
RS11
PCB 短路
RS10
CT24
R842_XO XTAL_I_710
RT2
R842_XO
S2_SDA
S2_SCL