Panasonic SA-HT280 Service Manual page 72

SCHEMATIC DIAGRAM-6
C
DTS CIRCUIT
2.6V
A
B
R1019 10K
R1018 10K
R1017 10K
R1016 10K
2.6V
R1015 10K
R1014 10K
R1013 10K
R1012 10K
2.6V
2.6V
E
R1033
1K
A
R1034
1K
B
R1035
1K
C
R1036
1K
D
:POSITIVE VOLTAGE LINE
6 5 4 3 2 1 44 43 42
0V
SCCLK
7
2.6V
DATA7
8
2.6V
DATA6
9
2.6V
DATA5
10
2.6V
IC1001
DATA4
11
2.6V
CS49326-CLR
V 2
12 DD
AC3/ DTS DECODER DSP
Vss2
13
2.6V
DATA3
14
2.6V
DATA2
15
2.6V
DATA1
16
2.6V
DATA0
17
18 19 20 21 22 23 24 25 26
E
F
G
H
IC1003
SN74LV244APW
A
LOGIC CONTROL
2.6V
20 1
Vcc 1G
2V
19 2
2G 1A1
1V 0V
18 3
1Y1 2Y4
0V 1.6V
17 4
2A4 1A2
1V 0V
16 5
1Y2 2Y3
0V 1.6V
15 6
2A3 1A3
1.6V 2.6V
14 7
1Y3 2Y2
5V 1.6V
13 8
2A2 1A4
1.6V 2.6V
12 9
1Y4 2Y1
5V
11 10
2A1 GND
L1001
2.2 H
41 40
0V
AU DATA2
39
2.6V R1027 4.7K
DB CLK
38
2.6V R1029 4.7K
DB DA
37
2.6V
RESET
36
VssA
35
2.6V
V A
DD 34
2.6V
FILTS
33
0V C1007 50V2.2
FILTD
32
0V R1025 10K
CLK SEL
31
1.2V
CLK IN
30
1.6V
CMP REQ
29
27 28
2.6V
5 4
Vcc
IC1006
SNAHC1U04DBV
INVERTER
NC GND
1 2 3
2.3V
B
I
J
R1030
1M
K
X1001
(12.288MHz)
L
M
A
B
C
D
2.6V
1.2V
IC1005
SN74HCU04APW
LOGIC CONTROL
2.1V 4.9V
Vcc
1 14
1A
2.4V
1Y 6A
2 13
2.4V
6Y
3 12
2A
2.3V
5A
4 11
2Y
2.4V
5Y
5 10
3A
2.4V
4A
6 9
3Y
4Y
7 8
GND
Q1001
DTA114YETL
POWER SUPPLY
4.9V 4.9V
0V
4.9V
2.6V