Cambridge Audio 840A - Front Panel PCB Schematic (Shift Registers)

Cambridge Audio Azur 840A Amplifier
AP16369/3 Front Panel PCB Schematic (Shift Registers)
D
2
CLK
3
STB
1
OE
15
Q0
4
Q1
5
Q2
6
Q3
7
Q4
14
Q5
13
Q6
12
Q7
11
QS
9
QS
10
U3
74HC4094
VDD=+5V
VSS=LOGIC GND
LOGIC GND
D
2
CLK
3
STB
1
OE
15
Q0
4
Q1
5
Q2
6
Q3
7
Q4
14
Q5
13
Q6
12
Q7
11
QS
9
QS
10
U4
74HC4094
VDD=+5V
VSS=LOGIC GND
D
2
CLK
3
STB
1
OE
15
Q0
4
Q1
5
Q2
6
Q3
7
Q4
14
Q5
13
Q6
12
Q7
11
QS
9
QS
10
U5
74HC4094
VDD=+5V
VSS=LOGIC GND
FROM SHEET 1
SERIAL CLOCK
SERIAL DATA
SERIAL STROBE
SHIFT REG ENABLE
1
2
3
4
5
6
7
8
CN4
FFC 08WAY
1
2
3
4
5
6
7
8
CN5
FFC 08WAY
1
2
3
4
5
6
7
8
CN6
FFC 08WAY
D
2
CLK
3
STB
1
OE
15
Q0
4
Q1
5
Q2
6
Q3
7
Q4
14
Q5
13
Q6
12
Q7
11
QS
9
QS
10
U6
74HC4094
VDD=+5V
VSS=LOGIC GND
1
2
3
4
5
6
7
8
CN7
FFC 08WAY
C8
100nF
+5V
C12
100nF
C13
100nF
C14
100nF
SHIFT REG DECOUPLE
TO PREAMP BOARD
TO PREAMP BOARD
TO PREAMP BOARD
TO INPUT BOARD
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