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8.9.
TV DEMODULATOR PACK SCHEMATIC DIAGRAM
F
E
DU7601-19
DU7601-20
DU7601-21
DU7601-22
DU7601-23
DU7601-24
DU7601-25
DU7601-26
D
DU7601-27
C
B
A
NOTE:THE MEASUREMENT MODE OF THE DC VOLTAGE ON THIS DIAGRAM IS STOP MODE.
1
VIDEO SIGNAL PATH
(C/D)
R0714
R0732
5600
4700
LB0701
VLP0147
PK0701
SW1
1
SW2
2
3
1.6
SIF OUT
4
2.4
AFC S-CURVE
5
2.6
TUNER VIDEO
6
5.0
REG 5V
7
8
GND
9
PP0701
(TO TUNER UNIT)
4MHz
1
AGC
2
IF
3
GND
4
2
AUDIO SIGNAL PATH
R0731
100
R0713
0
R0742
150
Q0702
2SD601A
(AMP)
3.6
3.3
R0741
220
2.6
R0743
1K
L0701
0.27u:A/C/D/E
0.22u:B
(C/D)
X0702
VLF1431
3
C0724
220P:A/C/D/E
330P:B
C0721
120P:A/E
82P:B
56P:C/D
IC0701
LA75503
VR0701
10KB
X0701
VLF1416:A/E
K7501
VLF1417:B
56P
VLF1430:C/D
NOTE:DO NOT USE ANY PART NUMBER SHOWN ON
ORDERING.WHEN YOU ORDER A PART,PLEAS
4
3.1
2
1
BPF
X
BPF
LIM
AMP
FM
DET
DEEMPHP
24
2.6
2
D070
0
R0705
4700
R0707
39K
X
V
V
V
(A/E)
5
51
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