Elenberg LTV-2603, Руководство по обслуживанию, Страница: 18 / 36

14
7)TUNER INPUT&OUTPUT
8D2
BA277
5V_TUNER
SC
L_V50
200mA
8R38
470K
200MA
+
8EC4
100uF/16V
8R4 100
210mA
8L7 10uH
200MA
2.39
5V_TUNER
8C20 10n
SAW
8U3
K9351
2 4
3
5 1
DV33A
8L8 10uH
8C29
390p
8R25
1K
1.90
GND
for TV
2.39
8C4
0.1u
SD
A_V50
8C25 10n
8R16
75
1.90
8C27
0.47u
If Tuner SIF output>450mV,use 8R37, otherwise use OPA circuit
2.37 8C24
100p
8R30
100
8L2 22uH
8C23
100p
8R8
4.7K
8R23
12K
0.08
8R35
220
+
8EC1
100uF/16V
8R28 100
WRITE is 0X86
2.41
8Q6
2N3904
SOT_23
1
3
2
+
8EC5
100uF/16V
IF_TV
4.79
8Q4
2N3904
1
3
2
8Q1
2N7002
1
3 2
READ is 0X87
0.19
4.94
8D1
BA277
8VCC
8R17
75
8R6
24K
I2C ADDRESS:
1.94
1.64
8R20
15K
8D3
BA277
SDA_V50
N-MOSFET
1.94
2.0^
8R22
470
33V
MPX1
8R21
47K
8C3
10n
8R24
1.8K
8R29
100
8R9
4.7K
0
2.58
12V_SIF
8C16
0.22u
AU
D
IO_
OU
T
8R37 0/NC
5V_TUNER
5V_TUNER
8Q5
2N3904
1
3
2
SCL
8R3 100
4.95
0.96
GND
8C11
1.5n
N-MOSFET
SAW
8U5
F3955S
2 4
3
5 1
8TUN1 Tuner
1 2 3 4 5 6 7 8 9 10 11
AGC VT GN
D
SC
L
SD
A
V+ V+ NC 33V IF
G
N
D
IF
8Y 1 4MHz
8R31
100
8C9 47n
8R33
5.6K
4.9^
0.59
510
8C8
10n
8C26
10n
+
8EC6
10uF/16V
8C2
0.1u
8C22 10n
2.05
75
12V
SCL_V50
8C15
0.47u
8C28
1n
SDA
12V_SIF
8C21
0.1u
8R7
4.7K
8C31
0.1u
8R15
100K
8U4
TDA9886
7 9 1 2
15 16
5 11 3
13
8 10 4
14
6 12
17 18 19 20 21 22 23 24
DG
ND
TO
P
VI
F
1
VI
F
2
RE
F
NC(
5
)/
V
A
G
C(
6
)
D
EEM
SC
L
OU
T
1
NC
A
UD_
O
U
T
SD
A
FM
P
L
L
TA
G
C
AF
D
SI
OM
A
D
C
VBS
AG
N
D
VP
LL
VPP AF
C
OU
T
2
SI
F
1
SI
F
2
8R2
4.7K
4.9^
GND
4.9^
C
V
BS_M
O
U
T
8R1
4.7K
8R32
220
8R27 75
8C18
0.1u
8R14
330
+
8EC2
220uF/16V
4.9^
820
CVBS0
8C17
20p
8R26
100
2.21
5V_TUNER 5V_TUNER 8U1 7808D SMD TO-252-3
1
2
3
IN
GN
D
OUT
8R5 4.7K
8U2
AP1117-5 1
2 3
AD
J
/G
N
D
OUT IN
8C1
0.1u
3.51
5V
8Q2
2N7002
1
3 2
5V_TUNER