Input Pcb Schematic - Cambridge Audio 550A Service Manual

CN11:A
1
1k
PreOut Right
2
R45
1/8W Metal Film
CN10:C C66
R AV2-8.4-9
4
5
AV4-8.4-9 NP Electrolytic
47uF 16V C50
U6
R44
CN10:A C67 100pF 50V 100pF 50V
47k
NP0 Ceramic NP0 Ceramic
1/8W Metal Film
1
2 220R
R41
AV4-8.4-9 1/8W Metal Film
C46
R34
220R
CN9:C R38
1/8W Metal Film
4 C52
NP Electrolytic
1k
5
47uF 16V 100pF 50V
AV4-8.4-9 R35 1/8W Metal Film
NP0 Ceramic
47k
C48
1/8W Metal Film
100pF 50V
CN9:A
U6 NP0 Ceramic
1
2
AV4-8.4-9
C44
R30
U6
1k
CN8:C
NP Electrolytic
1/8W Metal Film
4 47uF 16V
R31
5 C54
AV4-8.4-9
47k 100pF 50V
1/8W Metal Film NP0 Ceramic
CN8:A C42
1
2
AV4-8.4-9 NP Electrolytic
R26
47uF 16V
1k
CN13:C
1/8W Metal Film
4 R27 C56
5
47k
AV4-8.4-9
1/8W Metal Film 100pF 50V
NP0 Ceramic
CN13:A
1
2
C40
AV4-8.4-9
R21
1k
1/8W Metal Film
NP Electrolytic
47uF 16V R20
C38
47k
1/8W Metal Film 100pF 50V
NP0 Ceramic
C72
R25
1k
1/8W Metal Film
NP Electrolytic
47uF 16V R24
47k
1/8W Metal Film
CN13:B
3
AV4-8.4-9
U10:B
6
1k
CN13:D C39 R22
7
1/8W Metal Film
5
6
NE5532P
47k
AV4-8.4-9 NP Electrolytic Audio Op Amp
1/8W Metal Film
47uF 16V C73
R23
CN8:B C41
100pF 50V
NP0 Ceramic
3
AV4-8.4-9 NP Electrolytic
47uF 16V U9:B
CN8:D C43 6
7
R19
5
6
NE5532P
AV4-8.4-9 NP Electrolytic
Audio Op Amp
47uF 16V R18 1k
C37
CN9:B C45 1/8W Metal Film
47k
1/8W Metal Film 100pF 50V
3 NP0 Ceramic
AV4-8.4-9 NP Electrolytic
47uF 16V
R29
U8:B
CN9:D C47 6
7
1k
R28 5
6 1/8W Metal Film
NE5532P
AV4-8.4-9 NP Electrolytic 47k
Audio Op Amp
47uF 16V 1/8W Metal Film 100pF 50V C55
NP0 Ceramic
R39
220R
1/8W Metal Film
CN10:B
C49
R33
U7:B
100pF 50V
6
3
NP0 Ceramic 1k 7
AV4-8.4-9
1/8W Metal Film
5
R32 NE5532P
C53
U6 Audio Op Amp
R40
100pF 50V
NP0 Ceramic
220R
47k
1/8W Metal Film
C68 1/8W Metal Film
CN10:D
100pF 50V
U11:B
R37
NP0 Ceramic 6
6 7
AV4-8.4-9 5
R36 1k
U6 NE5532P
1/8W Metal Film
47k Audio Op Amp
C69
L 1/8W Metal Film
C51
100pF 50V
NP Electrolytic
47uF 16V NP0 Ceramic
R43
U12:B
1k
CN11:B 6
1/8W Metal Film
C65 7
5
3 100pF 50V
PreOut Left NE5532P
AV2-8.4-9 NP0 Ceramic
R42 Audio Op Amp
47k
1/8W Metal Film
C64
Met. Polyester
47nF 63V
U12:A
2
LK48 LK52
1
TM R
NE5532P 24 AWG 24 AWG
3
Audio Op Amp 10mm Pitch 10mm Pitch
Met. Polyester
C63
47nF 63V
C62 Met. Polyester
47nF 63V
U11:A
2
LK42 LK19
1
MD R
24 AWG 24 AWG
3 NE5532P
Audio Op Amp 10mm Pitch 10mm Pitch
Met. Polyester
C61
47nF 63V
C60
Met. Polyester
47nF 63V
U7:A
2
LK38 LK20
1
DVD R
3 NE5532P 24 AWG 24 AWG
10mm Pitch 10mm Pitch
Audio Op Amp
Met. Polyester
C59
47nF 63V
C57
Met. Polyester
47nF 63V
U8:A
2
LK34 LK23
1
DAB R
3 24 AWG 24 AWG
NE5532P
10mm Pitch 10mm Pitch
Audio Op Amp
Met. Polyester
C58
47nF 63V
Met. Polyester
C36
47nF 63V
LK30 LK26
CD R
24 AWG 24 AWG
U9:A
2
10mm Pitch
1
3 NE5532P
Audio Op Amp
Met. Polyester
C35
47nF 63V
Met. Polyester
C75 47nF 63V
LK66 LK64
AUX R
24 AWG 24 AWG
2 U10:A 10mm Pitch
1
3 NE5532P
Audio Op Amp
C74
C76
100pF 50V
NP0 Ceramic Met. Polyester
47nF 63V
-15V
LK29 LK25
AUX L
24 AWG 24 AWG
10mm Pitch
LK33 LK24
CD L
24 AWG 24 AWG
10mm Pitch
LK37 LK21
DAB L
24 AWG 24 AWG
10mm Pitch
LK28 LK31
24 AWG 24 AWG
LK41 LK18 10mm Pitch 10mm Pitch
LK32 LK35
DVD L
24 AWG 24 AWG
24 AWG 24 AWG
10mm Pitch
10mm Pitch 10mm Pitch
LK36 LK39
24 AWG 24 AWG
10mm Pitch 10mm Pitch
LK40 LK43
24 AWG 24 AWG
10mm Pitch 10mm Pitch
LK44 LK46
LK45 LK17
24 AWG 24 AWG
MD L
24 AWG 24 AWG 10mm Pitch 10mm Pitch
LK47 LK49
10mm Pitch 10mm Pitch
24 AWG 24 AWG
10mm Pitch 10mm Pitch
LK50 LK27
24 AWG 24 AWG
10mm Pitch 10mm Pitch
© COPYRIGHT GENERAL NOTES
LK51 LK57 1.
The Audio Partnership
TM L
24 AWG 24 AWG
2.
Gallery Court
10mm Pitch 10mm Pitch
Hankey Place 3.
LONDON SE1 4BB
4.
Tel : +44 (0)171 940 2200
5.
Fax : +44 (0)171 940 2233
Cambridge Audio 550A & 650A
-15V
C22
RC4580P
U6:A
Audio Op Amp
47nF 63V
Met. Polyester
LK22
3
LK54
24 AWG
1
24 AWG 2
R6
Met. Polyester 24 AWG
470k
47nF 63V 10mm Pitch
1/4W Metal Film
LK14
C23
24 AWG
R16
100R U5
1/4W Metal Film
TC9163AF
-15V
C34
100nF 50V
Mono Ceramic
LK65
U6
24 AWG
R17
100R
LK15
1/4W Metal Film
5
7 24 AWG
6
RC4580P
LK53 LK56
Audio Op Amp
U6:B
24 AWG 24 AWG
R7
10mm Pitch 10mm Pitch
1/4W Metal Film
470k
R11
10k
D8
1/4W Metal Film
Rectifier
R12
1N4004
22k
1/4W Metal Film
Main
D9 Rectifier
1N4004
C20
100nF 250V
Met Polyester
100nF 250V
C16 C15
Met Polyester Unreg for Relays
100nF 250V
Met Polyester
C13
D5 D3
1000uF 35V
Electrolytic
CN7
Rectifier Rectifier
Test Point
1N4004 1N4004
C18
1
2
100nF 100V
3
Mono Ceramic
D4 D6
4
4 Way
Straight Header Main
Rectifier Rectifier
1N4004 1N4004
C17 C19
LK55
24 AWG
100nF 250V 100nF 250V
Met Polyester Met Polyester
U6 U6
LK1
24 AWG
R5
LK59
LK4
+15V
24 AWG
100R
24 AWG
10mm Pitch
1/4W Metal Film
LK2
C24
24 AWG
C25
10mm Pitch
47uF 25V
Met. Polyester
LK3
Electrolytic
47nF 63V
24 AWG
LK16
24 AWG
LK71
24 AWG
10mm Pitch
Main

Input PCB Schematic

C1 10nF 50V
Ceramic
LK63
CN2
1
2
3
J5
3 Way
Straight Header
LK62
Test Points
24 AWG
CN3
3
2
1
3 Way
Straight Header
LK70
LK60
24 AWG
24 AWG
C26 J3
10k
1/4W Metal Film
1
1nF 50V
R9 LK61
Ceramic
24 AWG
Ceramic C27
10nF 50V
CT1
Black Cable Tie
CT2
+5V
Black Cable Tie
D10
CT3
1N4148
Signal Diode
Black Cable Tie
CT4
Black Cable Tie
Q1
BC327-25 Cable ties hold Pre Out cable
PNP Signal to under side of input PCB
C12
LK12
AC Sense
24 AWG
1uF 50V
10mm Pitch
Electrolytic
R13
100k
1/4W Metal Film
Dig GND
U3 5V 1A
Regulator
Test Point
1 3
VI VO
C8 C9
C11
D11
C10
1000uF 35V
100nF 50V 100nF 50V
Electrolytic 47uF 16V
Rectifier
Mono Ceramic Mono Ceramic
Electrolytic
1N4004
D7
Rectifier
1N4004
U2 15V 1A
Regulator
Main Test Point
LK8 LK7
1 3
VI VO
24 AWG 24 AWG
10mm Pitch 10mm Pitch
C6 C7 D1
Rectifier
47nF 63V 47nF 63V 1N4004
Met. Polyester Met. Polyester
C2 D2
C14
C3
Rectifier
1000uF 35V
47nF 63V 1N4004
Electrolytic 100uF 25V
47nF 63V
Met. Polyester
LK5 Electrolytic 105
Met. Polyester
VI VO
24 AWG 2 3
Test Point
U1 7915
Regulator
R8
220R
1/4W Metal Film
CN6
1
CBUS IR
24 AWG 2
+5V
LK58
10mm Pitch 3
Short
4
24 AWG 5
LK13 R10
10mm Pitch
6
7
Unreg for Relays
8
Dig GND Spkr B Relay
9
Spkr A Relay
220R
9 Way
2W Carbon
Straight Header
Main
DRAWING TITLE
550A 650A Input PCB
SHEET TITLE
DRAWING No.
C28
J1
1
10pF 50V
NP0 Ceramic
R4
1k8
1/4W Metal Film
LK69 U4:B
5
24 AWG 7
RCh In
10mm Pitch 6
NE5532P
C33 Audio Op Amp
Test Points
R3
1k8 10pF 50V
R1
R15
1/4W Metal Film
NP0 Ceramic 1
470k 2
1k8
1/4W Metal Film
3
1/4W Metal Film
C30
3 Way
47uF 25V Straight Header
Electrolytic
C29
47nF 63V
Met. Polyester
U4:A
LK67 LK68
3
24 AWG 24 AWG
1
LCh In
R14 10mm Pitch 10mm Pitch 2
NE5532P
470k
Audio Op Amp
R2
1/4W Metal Film
C31
1k8
1/4W Metal Film
47nF 63V
C32
Met. Polyester
47uF 25V
Electrolytic
R47
PreOut Left
220R
1/8W Metal Film
C71
CN12
CA1
1
100pF 50V
2
NP0 Ceramic
3
3 Way
Cable Assembly 3 Way
POUT
Straight Header
R46
PreOut Right
220R
1/8W Metal Film C70
100pF 50V
NP0 Ceramic
POUT
HS1 AP18791/#
TO220 Heatsink 50mm
LK10
+5V
24 AWG
10mm Pitch
LK9 LK11
SI1 SI2 SI3
24 AWG 24 AWG
10mm Pitch 10mm Pitch
Dig GND
TO220 TO220 TO220
LK6
+15V
24 AWG
BS1 BS2 BS3
10mm Pitch
C5
nylon bush nylon bush nylon bush
100uF 25V
J7
Electrolytic 105
WIRE1
SC1 SC2 SC3
50 mm Long +5mm Strip/Tin each end
18 AWG Black Insulated Wire
C4
J2
M3x8mm MC M3x8mm MC M3x8mm MC
C21
Ceramic 1
1nF 50V
-15V WS1 WS2
SC4 SC5
M3x8mm MC M3x8mm MC
CN4
1
+15V
2
-15V
3
4
+5V
CN5 5
Clk
6
Dig GND Dat
3
Stby Relay 7
2
+5V 8
1 Strb
9
AC Sense
10
3 Way Stby Relay
11
Straight Header IC GND Short
12
CBUS IR
Dig GND 13
Spkr B Relay
14
Spkr A Relay
DRAWN BY
Dave M
DATE
16/10/08
PAGE CHECKED BY
AP24033/3 1/1
CN1