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8.9.
TV DEMODULATOR PACK SCHEMATIC DIAGRAM
F
E
PK0701
DU7601-19
SW1
DU7601-20
SW2
DU7601-21
DU7601-22
SIF/QPSK
DU7601-23
AFC S-CURVE
DU7601-24
TUNER VIDEO
DU7601-25
TUNER 5V
DU7601-26
D
DU7601-27
GND
C
B
PP0701
(TO TUNER UNIT)
4MHz
A
AGC
IF
GND
NOTE:THE MEASUREMENT MODE OF THE DC VOLTAGE ON THIS DIAGRAM IS STOP MODE.
1
VIDEO SIGNAL PATH
(EE)
R0714
R0732
R0731
5600
4700
100
LB0701
VLP0147
1
2
3
1.6
4
2.4
5
2.6
6
5.0
7
8
9
1
2
3
4
2
AUDIO SIGNAL PATH
R0713
0
R0742
150
Q0702
2SD601A
(AMP)
3.6
R0741
220
3.3
C0721
120P:EG/EC
2.6
82P:B
56P:EE
R0743
1K
L0701
0.27u:EG/EC/EE
0.22u:B
X0701
(EE)
VLF1416:EG/EC
X0702
VLF1417:B
VLF1431
VLF1430:EE
3
C0724
220P:
EG/EC/EE
330P:B
3.1
1
BPF
X
BPF
IC0701
LA75503
LIM
AMP
FM
DET
DEEMPHP
24
2.6
D0702
0
R0705
4700
VR0701
R0707
10KB
39K
X0704
VLF1493:EG/EC
VLF1495:B
VLF1497:EE
(EG/EC)
K0701
56P
NOTE:DO NOT USE ANY PART NUMBER SHOWN O
ORDERING.WHEN YOU ORDER A PART,PLE
4
5
2.4
2
23
2.4
C0
100
47
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