Input Pcb Schematic (Buffers And Switches) - Cambridge Audio 540A V2 Service Manual

L
J2
R113
CN16:B CN15:D CN15:B
AV2-8,4-9 AV4-8,4-9 AV4-8,4-9
47R no stuff
TERMINAL
C86
100p 50V NP0
1N 50V NP0 no stuff
C80
C82
PreOut Left
U6
C47
10U NP 16V
R109
C83 C48 C53
1k 1/8W
10U NP 16V
100p 50V NP0 100p 50V NP0 100p 50V NP0
R110 R79 R83
47k 1/8W 47k 1/8W 47k 1/8W
U18:B U17:B
NE5532N NE5532N
LK68 LK69
LK10MM LK10MM
LK57
LK10MM
U9:B
LK15MM
LK43
LCh HP Out
NE5532N
LK9
5
LCh Out
LK15MM
R58
1k8
6
R61
3k6
+15V
LK5 RCh HP Out
LK15MM
U9:A
U6
LK8
3
RCh Out NE5532N
LK15MM
R59
1k8
2
R60
3k6
-15V
U6
GENERAL NOTES
1.
Rev1: Resistors R72,78,80,82,84,86,88,90,92,94,97,109
2. Rev4: Resistors R72,78,80,82,84,86,88,90,92,94,97,109
3.
4.
5.
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Cambridge Audio Azur 540A V2.0 Amplifier
CN12:D CN12:B CN13:D CN13:B CN14:D
CN14:B
AV4-8,4-9 AV4-8,4-9 AV4-8,4-9 AV4-8,4-9 AV4-8,4-9 AV4-8,4-9
100p 50V NP0
C78
R74 R76 R78 R82 R86 R90
220R 1/8W 220R 1/8W 1k 1/8W 1k 1/8W 1k 1/8W 1k 1/8W
10U NP 16V
10U NP 16V
C55
C51
C59
C57 C61 C65
100p 50V NP0 100p 50V NP0 100p 50V NP0
10U NP 16V
R87 R91 R95
47k 1/8W 47k 1/8W 47k 1/8W
U16:B U15:B U13:B
NE5532N NE5532N NE5532N
LK73 LK77 LK81 LK85
LK10MM LK10MM LK10MM LK10MM
LK56 LK53 LK91 LK90
LK15MM LK15MM LK15MM LK15MM
LK10MM
R112
220R 1/8W
7
PreOut Left
J8
LK94
C85
LK10MM
100P 50V NP0 TERMINAL
LK49
C41
LK15MM
LK59
47N 63V PE
U6 LINK15MM
U6
R111
220R 1/8W
1
PreOut Right
C84
C42
100P 50V NP0
47N 63V PE
U6
changed to 75R
changed to 1k
AP17649/5 Input PCB Schematic (Buffer and Switches)
U10:A
NE5532N
U10:B
+15V
4 8
C39 CN14:A
C40
47n 63V PE AV4-8,4-9
47n 63V PE
NE5532N
LK58
R94 R97
U6 U6
LK10MM
1k 1/8W 1k 1/8W
LK61
LK10MM
C63 C64 C60
C66 C62
10U NP 16V 100p 50V NP0 10U NP 16V 100p 50V NP0 10U NP 16V
R96 R93
47k 1/8W 47k 1/8W
-15V
+15V +15V
4 8 4 8
C67 C69 C70
C68
U14:A
47n 63V PE
47n 63V PE
47n 63V PE 47n 63V PE
NE5532N
U14:B +15V U13:A
LK100
NE5532N NE5532N
-15V
LK15MM
R99 R98
LK84
100R 100R
LK87
LK10MM
LK51
C88 C89
LK10MM
LK15MM
100N 50V X7R 100N 50V X7R LK99 LK89
LK15MM LK15MM
SW GND
1 U11
Vss Vdd
28
2
L-S1 R-S1
3 27
L-S2 R-S2
4 26
L-S3 R-S3
5 25
L-COM1 R-COM1
24
6
L-S4 R-S4
23
7
L-S5 R-S5
LK93 8 22
L-S6 R-S6 LK97
9 21 LK10MM
L-COM2 R-COM2
10 20
L-S7 R-S7
19
11
L-S8 R-S8
18
12
L-COM3 R-COM3
13 17
ST DATA
14 16
GND CLK
15
CN5
U6 TC9163AF
1
Clock
SW GND
2
LK101 Data
3
DGnd from PIC
LK10MM 4
Str obe
5
Control Bus IR
6
1 ABUS IR
Control Bus IR 7
Abus GND
Amp Mute
2 Amp Mute
ABU S PC B DGnd
3
ABU S IR 2,5MM 7W ST HEADER
4
ABUS Status Standby Relay To PIC
5
ABUS P CB +5V +5VOLTS
CN9 C87 J1
ABUS Control Signals
2,5MM 5W ST HEADER
1N 50V NP0 TERMINAL
U6
CN14:C CN13:A CN12:C CN15:A
CN13:C CN12:A
AV4-8,4-9 AV4-8,4-9 AV4-8,4-9 AV4-8,4-9 AV4-8,4-9 AV4-8,4-9
C77
100p 50V NP0 100p 50V NP0
R92 R88 R84 R77
R80
1k 1/8W 1k 1/8W 1k 1/8W 220R 1/8W R75
1k 1/8W
220R 1/8W
C52
U6
C56 C49
C58 10U NP 16V C50
C54
100p 50V NP0 10U NP 16V 100p 50V NP0 100p 50V NP0 10U NP 16V
R89 R85 R81
47k 1/8W +15V 47k 1/8W 47k 1/8W
-15V
+15V
-15V -15V +15V
4 8 4 8 4
C72 C71 C73 C74 C75
47n 63V PE 47n 63V PE 47n 63V PE
47n 63V PE
47n 63V PE
U15:A
U16:A U17:A
NE5532N
NE5532N NE5532N
LK52
LK72
LK80 LINK15MM LK76
LK10MM
LK10MM LK10MM
LK60
LINK15MM
LK62
LK10MM
LK92
LK10MM
LK54
C90
LK10MM
10P 50V NPO
R105
LK55
LK10MM
1k8
LK95
5
J4
LK10MM
GND Links on under s ide 6
R100
TERMINAL C93
470k
J5
R104
1k8
10P 50V NPO
TERMINAL
+15V
J6
TERMINAL
LK96
3
LINK15MM
2
R103
R101
1k8
470k
R
U6
CN15:C
CN16:A
AV4-8,4-9
AV2-8,4-9
C79
U6
C81
10U NP 16V
R72
C46
1k 1/8W
100p 50V NP0
R73
47k 1/8W
-15V
+15V
8 4 8
C76 C45
C44
47n 63V PE 47n 63V PE
47n 63V PE
U18:A
NE5532N
LK65
LK10MM
ABUS Audio Out
2,5MM 3W ST HEADER
R106
CN10
1
560R RCh
2
GND
3
LCh
R107
560R
7
RCh In
U12:B
NE5532N
R102
1k8
C91
47N PE 63V
U12:A
1 LCh In
NE5532N
C92
47N PE 63V
6