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8.8.
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
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
2.6
56P
R0743
1K
L0701
0.27u
X0702
X0701
VLF1431
VLF1430
NOTE:DO NOT USE ANY PART NUMBER SHOWN ON THIS SCHEMATIC DI
ORDERING.WHEN YOU ORDER A PART,PLEASE REFER TO PARTS
3
C0724
220P
3.1
1
BPF
X
BPF
IC0701
LA75503
LIM
AMP
FM
DET
DEEMPHP
24
2.6
D0702
0
R0705
4700
VR0701
R0707
10KB
39K
4
40
2.4
1.6
2
A
S
S P
23
2
2.4
2.2
C0702
1000P
1
X0704
VLF1497
5
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