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F
E
D
PK0701
DU7402-19
SW1
1
DU7402-20
SW2
2
DU7402-21
3
DU7402-22
SIF OUT
4
DU7402-23
AFC S-CURVE
5
DU7402-24
TUNER VIDEO
6
DU7402-25
REG 5V
7
DU7402-26
8
DU7402-27
GND
9
C
B
PP0701
(TO TUNER UNIT)
A
4MHz
1
AGC
2
IF
3
GND
4
1
2
R0732
LB0701
R0714
0
J0JBC0000041
10K
R0743
82
4.3
Q0702
2SB0709A0L
(AMP)
R0731
0
100
4.9
1.6
5.1
X0702
J0B4055A0001
3
C0714
C0713
1
6V100
R0740
C0721
270
47P
C0706
0.033
C0702
1K
2.7
1.9
1
2
AGC
R0742
470
R0741
FM
220
2.2
DET
IC0701
C1AB00001924
AMP
DEEM
24
23
3.6
R0704
1M
R0719
4700
L0701
22
C0711
R0715
NOTE:THE MEASUREMENT MODE OF THE DC VOLTAGE ON THIS DIAGRAM IS STOP MODE.
16V22
22K
NOTE:DO NOT USE ANY PART NUMBER SHOWN ON THIS SCHEMATIC DIAGRAM FOR
ORDERING.WHEN YOU ORDER A PART,PLEASE REFER TO PARTS LIST.
4
5
R0726
3300
R0711
51
C0707
50V
C0727
C0732
0.47
39P
100P
R0747
C0724
270
0.01
2.6
5.1
2.3
2.2
0.7
2.3
3.4
3
4
5
6
7
8
9
5V
EQ AMP
+
SIF
AMP
APC
VCO
AMP
SW
VIDEO
TRAP
DET
IF
VIF
AGC
AMP
22
21
20
19
18
17
16
2.7
2.8
2.3
2.8
2.8
5.1
C0701
C0703
R0705
C0704
50V1
50V1
4700
0.068
R0708
C0709
R0707
VR0701
22K
0.01
39K
10KB
K0709
0
10
8
7
6
X0704
VLF1497
1
2
3
4
5
X0701
J0B3955A0001
6
7
R0725
100
C0712
R0709
0.1
0
C0725
3P
R0702
100K
3.4
1.3
4.9
10
11
12
FLL
AFT
1ST SIF
DET
1ST
AGC
SIF
AMP
RF
AGC
15
14
13
1.8
4.2
1.8
R0738
0
C0710
0.01
R0703
C0705
1K
0.1
L0703
3.3u
DMR-E85HEP
VIF Decoder Schematic Diagram
8
9
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