Cambridge Audio Azur 640P User manual

Gallery Court Hankey Place London SE1 4BB UK

Tel: +44 (0)20 7940 2200 Fax: +44 (0)20 7940 2233

640P/540P

Issue Date: 23rd August 2005

________________________________________________________________________

SERVICE MANUAL

________________________________________________________________________

SPECIFICATIONS:

540P 640P 640P

(MM) (MC)

Max Power Consumption 5W 5W 5W

Gain @ 1kHz 39dB 39dB 55dB

Input Impedance 47k 47k 100R

Nominal Output 300mV 300mV 300mV

Sensitivity for Nominal Output 3.35mV 3.35mV 0.5mV

THD 20Hz-20kHz 0.009% 0.005% 0.002%

RIAA Curve Accuracy +/-0.65dB <+/-0.3dB <+/-0.3dB

25Hz-20kHz 20hz-50kHz 20Hz-50kHz

(Subsonicfilteroff)

Signal to Noise Ratio >85db >86dB >72dB

Using Audio Precision RIAA-1

with grounded inputs.

Crosstalk @ 20kHz >76dB >83dB >69dB

Dimensions (HxWxD)

mm 46x215x133 46x215x133 46x215x133

inches 1.8x8.5x5.2 1.8x8.5x5.2 1.8x8.5x5.2

Weight

kg 0.8 0.9 0.9

lbs 1.8 2 2

AP18705/1

540P & 640P SERVICE MANUAL

TABLE OF CONTENTS

Safety Precautions & Important Notes 3

540P/640P Main Assembly BOM 4

540P Main PCB Schematic 5

540P Main PCB Layout (Top Side) 6

540P Main PCB Layout (Bottom Side) 7

540P Main PCB BOM 8-9

640P Main PCB Schematic 10

640P Main PCB Layout (Top Side) 11

640P Main PCB Layout (Bottom Side) 12

640P Main PCB BOM 13-15

ICPinLayoutDetails 16

SAFETY PRECAUTIONS & IMPORTANT NOTES

1.Check that the rear of the product indicates the correct supply voltage

for you area.

2. The lighting flash with the arrowhead within an equilateral

triangle is intended to alert the user or service agent to the

presence of dangerous voltages within the product enclosure

that may be of sufficient magnitude to constitute a risk of

electric shock to persons.

3. The exclamation point within an equilateral triangle is

intended to alert the user or service agent to the presence of

important operating and maintenance (Servicing) instructions

in the literature accompanying the appliance.

4. This product complies with EEC Low Voltage (73/23/EEC) and

Electromagnetic Compatibility (89/336/EEC) Directives when used and

serviced in accordance with this manual. For continued compliance all

components marked safety and EMC critical must only be replaced by

Cambridge Audio approved parts.

5. Any unauthorised design alterations or additions will void the

manufacturer’s warranty; furthermore the manufacturer cannot accept

responsibility for personal injury or property damage resulting therefrom.

6. When servicing, care should be taken to observe the original routing

and dressing of the leads and it should be confirmed that they have been

returned to normal after re-assembly.

Notes on chip component replacement

Never reuse a component that has been removed from a PCB

Notice that the minus side of a tantalum capacitor may be damaged by heat

Cambridge Audio and Azur are registered trademarks of Audio Partnership PLC. This document

may not be reproduced, distributed, transmitted, displayed, published, or broadcast without the

express written prior permission of Audio Partnership PLC.

Alteration or removal of any trademark, copyright, or other notice from this content is prohibited.

Information provided in this document is provided solely for the use of official service agents in

repairing and servicing Audio Partnership PLC products.

AP15869/2 & AP16524/3

AP PART NO

P DRAWING

NO DESCRIPTION QTY NOTES

AP14509/2 Azur 540.640P User's Manual Multi-Language - 1 5100-549900-100

AP15655/1 Azur 640/640P Woven Bag 1 5299-262191-300

PY912 EU PSU Unit 1 GPG411200500WA00

PY913 CU PSU Unit 1 GPU351200500WA00

PY868 Australia / NZ PSU Unit 1 GPS411200500WA01

PY867 UK PSU Unit 1 GPB411200500WA00 (4021-411200-107)

Cambridge Audio Azur 540P / 640P Phono Stage Main Assembly BOM

Note: resistors, capacitors and other 'generic' electronic components are not usually stocked by the

manufacturer. Please obtain these locally.

Cambridge Audio Azur 540P Phono Stage

AP15219/4 Main PCB Schematic

220u 50V

1N4004

220u 50V

1N4004

220u 50V

1VO 3

GND

7818

47N POLYESTER

2VO 3

GND

7918

100u 25V

C10

100u 25V

+15V

-15V

1N4004

3k3

BLUE_AZUR

COMMENTS=NO STUFF FP

C11

10U 25V

CN1

DCJACK2

C12

4.7u PEST 5%

C13

4.7u PEST 5%

U4:B

NE5532

1k2

3k9

82k

1k8

C15

82n PEST 5%

820R

Sub Filter

AC 12v 500mA

U3:B

NE5532

2k2

2SA970

100R

4k7

R10

4k7

2SA970

C16

100U 25V

C17

100U 25V

R11

4k7

R12

1k0

+15V

R13

1k0

C18

100p NPO

R14

47k

C19

220p NPO

U3:A

NE5532

R15

2k2

2SA970

R16

100R

R17

4k7

R18

4k7

2SA970

C20

100U 25V

C21

100U 25V

R19

4k7

R20

1k0

R21

1k0

- 15V

C22

100p NPO

R22

47k

C23

220p NPO

R23

22R

C24

100u 25V NP

R24

22k

C25

100n Ceramic

C26

100n Ceramic

MM phono input

PAD

-V

PAD

GND

PAD

1N4004

R25

47R

R26

3k9

R27

1k2

R28

220R

R29

7k5

C28

4.7u PEST 5%

C29

4.7u PEST 5%

8 4

U4:A

NE5532

R30

1k2

R31

3k9

C30

39n PEST 5%

R32

82k

R33

1k8

C31

82n PEST 5%

R34

820R

R35

22R

C32

100u 25V NP

R36

22k

R37

47R

R38

3k9

R39

1k2

R40

220R

R41

7k5

RIAA

C34

47N POLYESTER

C35

47N POLYESTER

+15V

-15V

C36

47N POLYESTER

C37

47N POLYESTER

-15V

+15V

CN2:B

ZUAN-AV2-8

CN2:A

ZUAN-AV2-8

CN3:B

ZUAN-AV2-8

CN3:A

ZUAN-AV2-8

C38

470n Ceramic

C39

4.7n Ceramic

C40

4.7n Ceramic

LK1

LINK10MM

LK2

LINK10MM

LK3

LINK15MM

LK4

LINK10MM

LK5

LINK10MM

- 15V

LK6

LINK10MM

LK7

LINK15MM

CN5

JST 2,5MM B2B-XH-A

C14

39n PEST 5%

C33

4.7u PEST 5%

C27

4.7u PEST 5%

C41

47N POLYESTER

C42

47N POLYESTER

220u 50V

R42

100R

R43

100R

LK8

LINK10MM

LK9

LINK10MM

86-756-8687998

To enhance viewing, please print to A3 5

Cambridge Audio Azur 540P Phono Stage

AP15219/4 Main PCB Layout (Top Side)

AP15220/4

Superior Performance Moving Magnet Phono Module

86-756-8687998

To enhance viewing, please print to A3 6

Cambridge Audio Azur 540P Phono Stage

AP15219/4 Main PCB Layout (Bottom Side)

86-756-8687998

To enhance viewing, please print to A3 7

AP15222/3

AP PART

NUMBER VALUE DESCRIPTION QTY COMPONENT IDENT NOTES

RESISTORS

22R 0.25W metal film 2 R23, R35

47R 0.25W metal film 2 R25, R37

100R 0.25W metal film 4 R8, R16, R42, R43

220R 0.25W metal film 2 R28, R40

820R 0.25W metal film 2 R6, R34

1K 0.25W metal film 4 R12, R13, R20, R21

1K2 0.25W metal film 4 R2, R27, R30, R39

1K8 0.25W metal film 2 R5, R33

2K2 0.25W metal film 2 R7, R15

3K3 0.25W metal film 1 R1

3K9 0.25W metal film 4 R3, R26, R31, R38

4K7 0.25W metal film 6 R9, R10, R11, R17, R18, R19

7K5 0.25W metal film 2 R29, R41

22K 0.25W metal film 2 R24, R36

47K 0.25W metal film 2 R14, R22

82K 0.25W metal film 2 R4, R32

CAPACITORS

100p NPO Ceramic 5mm Pitch 2 C18, C22

220p NPO Ceramic 5mm Pitch 2 C19, C23

4.7n NPO Ceramic 5mm Pitch 2 C39, C40

39n 5% Polyester Film 5mm Pitch 2 C14, C30

CMEA393J063RB050 Mini Box

metallised polyester 39n 63V 5%

7.3x2.5mm, 5mm pitch.

47n 10% Polyester Film 5mm Pitch 8 C7, C8, C34, C35, C36, C37,

C41, C42

82n 5% Polyester Film 5mm Pitch 2 C15, C31

CMEA823J063RB050 Mini Box

metallised polyester 82n 63V 5% ,

7.3x2.5mm, 5mm

itch.

100n Ceramic X7R 5mm Pitch 2 C25, C26

470n Ceramic X7R 5mm Pitch 1 C38

4.7u 5% Polyester Film 25mm Pitch 6 C12, C13, C27, C28, C29, C33

CMEF475J100RB250 Radical

metallised polyester 4.7u 100V 5% ,

28x9mm, 25mm pitch

Cambridge Audio Azur 540P PCB Assembly BOM

Note: resistors, capacitors and other 'generic' electronic components are not usually stocked by the

manufacturer. Please obtain these locally.

AP15222/3

AP PART

NUMBER VALUE DESCRIPTION QTY COMPONENT IDENT NOTES

Cambridge Audio Azur 540P PCB Assembly BOM

10u 25V Polarised Electrolytic 1 C11

100u 25V Non Polarised Electrolytic 2 C24, C32

100u 25V Polarised Electrolytic 6 C9, C10, C16, C17, C20, C21

220u 50V Polarised Electrolytic 6 C1, C2, C3, C4, C5, C6 Height Restriction 16mm Max

7818 18 volt 1A TO220 Positive Voltage

regulator 1U1 To be mounted on AP15814/1

heatsink/shield

7918 18 volt 1A TO220 Negative

voltage regulator 1U2 To be mounted on AP15814/1

heatsink/shield

PY259 NE5532 8 pin DIL Audio OpAmp 2 U3, U4 4155-320052-100

TRANSISTORS

2SA970 TO92 PNP Very low noise

transistor 4 Q1, Q2, Q3, Q4 1301-970000-100

DIODES

1N4004 Rectifier Diodes 5 D2, D3, D4, D6, D8

SEMICONDUCTORS

Note: resistors, capacitors and other 'generic' electronic components are not usually stocked by the

manufacturer. Please obtain these locally.

Cambridge Audio Azur 640P MM/MC Phono Stage

AP151197/1 Main PCB Schematic

1N4004

GND

7818

47n PE 63V

GND

7918

+18V

-18V

1N4004

3k3

C11

10U 25V

CN1

DCJACK2

U3:A

NE5532

C12

47n PE 63V

C13

47n PE 63V

+18V

-18V

3k9 1/8W

C14

4u7 PE 5%

C15

4u7 PE 5%

3k9 1/8W

U3:B

NE5532

R26

2k2 1/8W

U4:A

NE5532

C66

47n PE 63V

C27

47n PE 63V

R27

3k9 1/8W

C28

4u7 PE 5%

C29

4u7 PE 5%

R29

3k9 1/8W

U4:B

NE5532

R51

2k2 1/8W

SW1

SW-2POLE 2WAY

SW2

SW-2POLE 2WAY

Sub Filter

MC/MM

AC 12v 500mA

U5:A

NE5532

C40

47n PE 63V

C41

47n PE 63V

R52

1k3 1/8W

R53

1k3 1/8W

2SA970GR

R54

18R 1/8W

R55

15k 1/8W

R56

15k 1/8W

2SA970GR

R57

1k3 1/8W

R58

470R

+18V

R59

1k2

-18V

C44

220U NP 6.3V

R60

470R 1/8W

C46

220P PP 63V 5%

U6:A

NE5532

R61

910R 1/8W

2SA970GR

R62

91R 1/8W

R63

11k 1/8W

R64

11k 1/8W

2SA970GR

C49

220U NP 6.3V

R68

560k 1/8W

C51

220P PP 63V 5%

U5:B

NE5532

C52

47n PE 63V

C53

47n PE 63V

R69

1k3 1/8W

R70

1k3 1/8W

2SA970GR

R71

18R 1/8W

R72

15k 1/8W

R73

15k 1/8W

2SA970GR

R74

1k3 1/8W

C56

220U NP 6.3V

R77

470R 1/8W

C58

220P PP 63V 5%

U6:B

NE5532

2SA970GR

R79

91R 1/8W

R80

11k 1/8W

R81

11k 1/8W

2SA970GR

C61

220U NP 6.3V

R85

560k 1/8W

C63

220P PP 63V 5%

R86

2k2 1/8W

R87

2k2 1/8W

R88

2k2 1/8W

R89

2k2 1/8W

R47

47k 1/8W

R48

47k 1/8W

C25

100n PE 63V

C26

470n PE 63V

1N4004

CN2:A

ZUAN-AV2-8

CN2:B

ZUAN-AV2-8

CN3:A

ZUAN-AV2-8

CN3:B

ZUAN-AV2-8

C68

100n PE 63V

CN4:A

ZUAN-AV2-8

CN4:B

ZUAN-AV2-8

CN5

JST 2,5MM B2B-XH-A

Red Led Vf=2V

R94

3k 1/8W *2V

MM L

MC L

MM L

MC L

MM R

MC R

MM R

Q10

2SA970GR

Q11

2SA970GR

Q12

2SA970GR

Q13

2SA970GR

Q14

2SA970GR

Q15

2SA970GR

Q16

2SA970GR

Q17

2SA970GR

Q18

BC560C

D10

Red Led Vf=2V

R95

3k 1/8W *2V

BC560C

C54

10N PP 63V

C71

10N PP 63V

C72

10N PP 63V

C73

10N PP 63V

C76

10N PP 63V

C77

10N PP 63V

R65

1k3 1/8W

R66

470R

+18V

D11

Red Led Vf=2V

R100

3k 1/8W *2V

Q23

BC560C

R102

1k3 1/8W

D12

Red Led Vf=2V

R104

3k 1/8W *2V

Q25

BC560C

R67

1k2

-18V

R42

82R

R43

150R

sub

direct

C30

100n PE 63V

C75

22p NPO 50V

R15

130R 1/8W

R16

130R 1/8W

C88

470U NP 6.3V

C89

470U NP 6.3V

R17

51k 1/8W

C90

470U NP 6.3V

R18

51k 1/8W

C91

470U NP 6.3V

C92

47P NPO 50V

C93

47P NPO 50V

C98

33p NPO 50V

C99

33p NPO 50V

R36

910R 1/8W

R37

910R 1/8W

R38

910R 1/8W

R24

1k87 0.1%

C16

10N PP 63V

C45

10N PP 63V

-18V

C59

100n PE 63V

C60

100n PE 63V

C62

100n PE 63V

C67

100n PE 63V

C50

470n PE 63V

C70

470n PE 63V

C79

47n PE 63V

C80

47n PE 63V

R76

47k 1/8W

R78

47k 1/8W

C81

10N PP 63V 1%

C32

10N PP 63V 1%

C33

10N PP 63V 1%

C34

10N PP 63V 1%

1k87 0.1%

C17

10N PP 63V 1%

C18

10N PP 63V 1%

C19

10N PP 63V 1%

C20

10N PP 63V 1%

1K2 1/8W

R13

75K 0.1%

R19

1K 1/8W

C21

10N PP 63V 1%

C22

10N PP 63V 1%

C23

10N PP 63V 1%

C24

10N PP 63V 1%

R22

3.92k 0.1%

R45

1k87 0.1%

C35

22p NPO 50V

R84

1K2 1/8W

R90

1K2 1/8W

C36

10N PP 63V 1%

C37

10N PP 63V 1%

C38

10N PP 63V 1%

C39

10N PP 63V 1%

C69

10N PP 63V

C82

10N PP 63V

R20

1k87 0.1%

R10

75K 0.1%

R12

1K 1/8W

R14

3.92k 0.1%

47R 1/8W

R21

47R 1/8W

R23

47R 1/8W

1k6 1/8W

R28

1k6 1/8W

1N4004

R30

100R 1/8W

R31

15k 1/8W

1N4148

Q19

BC560C

R39

1k 1/8W

R40

220k 1/8W

R41

220k 1/8W

R44

51k 1/8W

Q20

MPSA14

2RL1:A

RELAY

RL1:B

RELAY

RL1:C

RELAY

1N4004

R46

390R 2W Carbon

AC Sense

+18V

Unreg

C95

1u 50V

C31

47U NP 16V

C64

47U NP 16V

Av=147

Av=23

R49

No Stuff

R82

No Stuff

Q21

2SA970GR

Q22

2SA970GR

Q24

2SA970GR

Q26

2SA970GR

Q27

2SA970GR

Q28

2SA970GR

Q29

2SA970GR

Q30

2SA970GR

D13 1N4004

1000U 35V EL

C55

1000U 25V EL

AC Sense

100U 25V EL

C10

100U 25V EL

C57

470U 25V EL

C65

470U 25V EL

R11

100R

R25

100R

+18V

-18V

C83

470U 25V EL

C84

470U 25V EL

R50

100R

R75

100R

330U 50V EL 105D

R83

220k 1/8W

R91

220k 1/8W

LK1

LINK10MM

LK2

LINK10MM

LK3

LINK10MM

FB1

FERRITE BEAD

FB2

FERRITE BEAD

FB3

FERRITE BEAD

FB4

FERRITE BEAD

LK4

LINK10MM

LK5

LINK10MM

C42

1000U 25V EL

C43

1000U 25V EL

C47

1000U 25V EL

C48

1000U 25V EL

R32

180k

0805

R33

180k

0805

C94

100U 25V EL

86-756-8687998

To enhance viewing, please print to A3 10

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