Cambridge Audio 840A - Input PCB; Input PCB Schematics

Cambridge Audio Azur 840A Amplifier
AP16361/3 Input PCB Schematic (Input Select)
5
4
CN1:C
QUAD PHONO
6
CN1:D
QUAD PHONO
2
1
CN1:A
QUAD PHONO
3
CN1:B
QUAD PHONO
5
4
CN2:C
QUAD PHONO
6
CN2:D
QUAD PHONO
2
1
CN2:A
QUAD PHONO
3
CN2:B
QUAD PHONO
5
4
CN4:C
QUAD PHONO
6
CN4:D
QUAD PHONO
2
1
CN3:A
QUAD PHONO
3
CN3:B
QUAD PHONO
-15V
+15V
R1
220K
R2
220K
R3
47R
R4
1K
R5
1K
R6
220K
R7
220K
R8
1K
R9
100R
R10
1K
R12
220K
R13
220K
R14
47R
R15
1K
R16
1K
R17
1K
R18
1K
R19
100R
R20
220K
R21
220K
C1
100n CER
C2
100n CER
R23
100R
C3
100nF 100V
R24
220K
R25
220K
LEFT
RIGHT
TAPE RETURN R
TAPE RETURN LEFT
HUB INPUT SWITCHER
INPUT PCB - HUB PCB
SWITCHER DATA
SWITCHER CLOCK
SWITCHER STROBE
TAPE OUT R
INPUT 1
INPUT 2
INPUT 3
INPUT 4
INPUT 5
TAPE OUT L
Vss
1
L-S1
2
L-S2
3
L-S3
4
L-COM1
5
L-S4
6
L-S5
7
L-S6
8
L-COM2
9
L-S7
10
L-S8
11
L-COM3
12
ST
13
GND
14
Vdd
28
R-S1
27
R-S2
26
R-S3
25
R-COM1
24
R-S4
23
R-S5
22
R-S6
21
R-COM2
20
R-S7
19
R-S8
18
R-COM3
17
DATA
16
CLK
15
U1
TC9163
6
7
8
RL1:C
RELAY
3
4
5
RL1:B
RELAY
HUB IN L
5
4
CN3:C
QUAD PHONO
R26
1K
R27
1K
R28
220K
R29
220K
INPUT 6
INPUT 7
2
1
CN4:A
QUAD PHONO
6
7
8
RL2:C
RELAY
6
7
8
RL3:C
RELAY
6
7
8
RL4:C
RELAY
6
7
8
RL5:C
RELAY
6
7
8
RL6:C
RELAY
6
7
8
RL7:C
RELAY
6
7
8
RL8:C
RELAY
INPUT R
6
CN3:D
QUAD PHONO
R30
220K
R31
1K
3
CN4:B
QUAD PHONO
R32
220K
R33
1K
INPUT 1
INPUT 2
INPUT 3
INPUT 4
INPUT 6
INPUT 7
INPUT 5
3
4
5
RL2:B
RELAY
3
4
5
RL3:B
RELAY
3
4
5
RL4:B
RELAY
3
4
5
RL5:B
RELAY
3
4
5
RL6:B
RELAY
3
4
5
RL7:B
RELAY
3
4
5
RL8:B
RELAY
3
CN5:B
QUAD PHONO
INPUT L
5
4
CN5:C
QUAD PHONO
6
CN5:D
QUAD PHONO
PREAMP OUT L
PREAMP OUT R
2
1
CN5:A
QUAD PHONO
3
2
1
8 4
U14:A
NE5532
5
6
7
U14:B
NE5532
R57
20K
R58
20K
R59
10K
R60
10K
R61
20K
R62
20K
R63
10K
R64
10K
C4
100nF
C5
22pF
C6
22pF
C7
22pF
C8
22pF
HUB IN L
HUB IN L
HUB IN R
+5V
LOGIC GND
INPUT ONE LEFT +
INPUT ONE LEFT -
GND
GND
INPUT ONE RIGHT +
INPUT ONE RIGHT -
INPUT 1 L-
INPUT 1 L+
INPUT 1 R-
INPUT 1 R+
GND
INPUT 1 L-
INPUT 1 L+
INPUT 1 R-
INPUT 1 R+
R22
100R
R34
100R
3
2
1
8 4
U2:A
NE5532
R35
100K
R36
1K
R37
1K
3
2
1
8 4
U4:A
NE5532
R38
100K
C13
47pF
C14
47pF
C15
47pF
C22
47pF
C23
47pF
C24
47pF
C25
47pF
C26
47pF
C27
47pF
C28
47pF
C29
47pF
C30
47pF
C31
47pF
PREAMP OUT
PREAMP OUT
C32
47pF
+15V
-15V
-15V
+15V
3
2
1
8 4
U3:A
NE5532
R42
100k
R43
47K
5
6
7
U3:B
NE5532
R44
47K
R45
100K
3
2
1
8 4
U5:A
NE5532
R40
100K
R41
47K
5
6
7
U5:B
NE5532
R46
47K
R47
100K
+15V
-15V
C38
10U NP 35V
C36
10U NP 35V
C39
10U NP 35V
C41
10U NP 35V
C45
10U NP 35V
C46
10U NP 35V
C47
10U NP 35V
3
2
1
8 4
U6:A
NE5532
5
6
7
U6:B
NE5532
3
2
1
8 4
U7:A
NE5532
5
6
7
U7:B
NE5532
3
2
1
8 4
U8:A
NE5532
5
6
7
U8:B
NE5532
R55
47K
R56
47K
R65
47K
R66
100K
R67
100K
R68
100K
+15V
-15V
C51
10U NP 35V
C52
10U NP 35V
C53
10U NP 35V
R69
100K
R70
100K
R71
100K
R72
47K
R73
47K
R74
47K
+15V
+15V
+15V
-15V
-15V
-15V
C60
10U NP 35V
3
2
1
8 4
U18:A
NE5532
R76
100K
R77
47K
5
6
7
U18:B
NE5532
C62
10U NP 35V
R78
100K
R79
47K
-15V
+15V
HUB 1L
HUB 2L
HUB 3L
HUB 4L
HUB 5L
HUB 6L
HUB 7L
HUB 1R
HUB 2R
HUB 3R
HUB 4R
HUB 5R
HUB 6R
HUB 7R
HUB 1L
HUB 2L
HUB 3L
HUB 4L
HUB 5L
HUB 6L
HUB 7L
HUB 1R
HUB 2R
HUB 3R
HUB 4R
HUB 5R
HUB 6R
HUB 7R
+15V
-15V
J1
TERMINAL
GROUND TERMINAL
3
2
1
8 4
U9:A
NE5532
R75
100K
R80
47K
-15V
+15V
TAPE RETN R
5
6
7
U9:B
NE5532
R81
100K
R82
47K
TAPE RETN L
C69
10U NP 35V
C70
10U NP 35V
TAPE RETN L TAPE RETN R
HUB IN R
1
2
3
4
5
6
CN10
JST 2,5MM B6B-XH-A
GND
1
2
3
4
5
6
7
8
9
10
CN6
FFC 10WAY
C68
10U 16V NP
C61
10U 16V NP
C50
10U 16V NP
C49
10U 16V NP
C48
10U 16V NP
C42
10U 16V NP
C40
10U 16V NP
C77
10U 16V NP
C37
10U 16V NP
C35
10U 16V NP
C57
10U 16V NP
C58
10U 16V NP
C59
10U 16V NP
C63
10U 16V NP
C66
10U 16V NP
C11
10U 16V NP
C12
10U 16V NP
C71
10U 16V NP
+5V POWER TO HUB
P1
PAD
R85
100R
C72
100nF 100V
C16
47N PE 63V
C17
47N PE 63V
C34
47N PE 63V
C33
47N PE 63V
C43
47N PE 63V
C44
47N PE 63V
C54
47N PE 63V
C55
47N PE 63V
C56
47N PE 63V
C64
47N PE 63V
C67
47N PE 63V
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