Cambridge Audio Azur 640C V2 Manuale utente

Gallery Court Hankey Place London SE1 4BB UK

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

640C V2

Issue Date: 30th November 2005

Revised Date 1st Issue: 20th November 2006

_________________________________________________________________________________

SERVICE MANUAL

_________________________________________________________________________________

SPECIFICATIONS:

D/A Converter Dual Wolfson WM8740

24-Bit/192kHz capable

Filter 4 Pole Dual Differential

Double Virtual Earth balanced

Frequency Response (+/-0.1dB) 20Hz – 20kHz

THD @ 1Khz 0dBFs <0.0010%

THD @ 1Khz -10dBFs <0.0005%

THD @ 20Khz 0dBFs <0.0070%

IMD (19/20 kHz) 0dBFs <0.0008%

Linearity @ -90dBFs +/- 0.5dB

Stop band rejection (>24 kHz) > 90dB

S to N ration, A weighted >104dB

Total correlated jitter <160pS

Crosstalk @1kHz <-100dB

Crosstalk @20kHz <-99dB

Output impedance <50 ohms

Dimensions (H x W x D) 70 x 430 x 310 mm

Weight 4.6kg (10.1lbs)

AP19501/2

640C V2 SERVICE MANUAL – Revision 2

TABLE OF CONTENTS

Safety Precautions & Important Notes 3

Laser Safety Precautions 4

Exploded Diagram 5

Front Panel PCB Schematic (Issue 3) 6

Front Panel PCB Layout (Top Side) 7

Front Panel PCB Layout (Bottom Side) 8

Front Panel PCB Assembly BOM (Issue 2) 9

Front Panel PCB Assembly BOM (Issue 3) 10

Servo PCB Schematic 11

Servo PCB Layout (Top Side) 12

Servo PCB Layout (Bottom Side) 13

Servo PCB Assembly BOM 14-15

DAC Board PCB Schematic (Issue 6) 16

DAC Board PCB Schematic (Issue 7) 17

DAC Board (Supply) PCB Schematic (Issue 6) 18

DAC Board (Supply) PCB Schematic (Issue 7) 19

DAC Board PCB Layout (Top Side) (Issue 6) 20

DAC Board PCB Layout (Top Side) (Issue 7) 21

DAC Board PCB Layout (Bottom Side) (Issue 6) 22

DAC Board PCB Layout (Bottom Side) (Issue 7) 23

DAC PCB Assembly BOM (Issue 3) 24-25

DAC PCB Assembly BOM (Issue 6) 26-27

Mains PCB Schematic 28

Mains PCB Layout (Top Side) 29

Mains PCB Layout (Bottom Side) 30

Mains PCB Assembly BOM 31

Voltage Select Switch PCB Schematic 32

Voltage Select Switch PCB Layout (Top Side) 33

Voltage Select Switch PCB Layout (Bottom Side) 34

Voltage Selector PCB Assembly BOM 35

IC Pin Layout Details 36-44

SAFETY PRECAUTIONS & IMPORTANT NOTES

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

your 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 for 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.

LASER SAFETY PRECAUTIONS

Caution: These labels may be attached to the unit on the rear and inside to

inform that it contains a laser component. Use of controls or adjustments, or

performance of procedures other than those specified within the service or

instruction manual may result in hazardous radiation exposure.

WARNING!

1. Service should only be performed by qualified personnel.

2. This equipment has been designed and manufactured to meet

international safety standards; it is the legal responsibility of the repairer to

ensure that these safety standards are maintained.

3. Any repairs must be made in accordance with the relevant safety

standards.

4. It is essential that safety and EMC critical components are replaced with

Cambridge Azur approved parts only.

CLASS 1 LASER PRODUCT

NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT

The laser diode in the optical pick-up block may suffer electrostatic breakdown because of the

potential difference generated by the charged electrostatic load, etc. on clothing and the human

body.

During repair, pay attention to electrostatic breakdown and also use the procedure in the printed

matter which is included in the repair parts.

The flexible board is easily damaged and should be handled with care.

NOTES ON LASER DIODE EMISSION CHECK

The laser beam on this model is concerated so as to be focused on the disc reflective surface b

the objective lens in the optical pick-up block. Therefore, when checking the laser diode

emission, observe from more than 30cm away from the objective lens.

Cambridge Audio Azur 640C V2 CD Player

AP175163 Front Panel PCB Schematic

SW1

PLAY/PAUSE

SW2

STOP

SW3

OPEN/CLOSE

CN1

CONN-H2

SEG11

SEG10

SEG9

SEG8

SEG7

SEG6

SEG5

SEG4

SEG3

SEG2

SEG1

SEG0

COM3

COM2

COM1

COM0

SEG12

SEG13

SEG14

SEG15

SEG16

SEG17

SEG18

LCD1

LCD

PACKAGE=LCD D600

CN2

CONN-H8

CN3

CONN-H8

CN4

CONN-H7

27K

33K

2K7

10K

82K

1K5

82K

100n 50V X7R

+5V

1n 50V X7R

R10

68K

R11

3K3

+5V

FORWARD SKIP FORWARD SEARCH

BACKWARD SKIP BACKWARD SEARCH

SW4

SW-TACT

SW5

SW-TACT

100n 50V X7R

R15

100R

VSS

RB2

RC4

RC2

RC3

RB1

RB4/OSC2/CLKOUT

RB0

VDD

RB5/OSC1/CLKIN

RB3/MCLR/VPP

RC5/TOCKI

RC1

RC0

PIC16C505

SW6

SW-TACT

PAD

R12

4K7

R13

10K

BC327

+5V

CN5

CONN-H3

CN6

CONN-H3

CN7

CONN-H7

10uF 10V EL

R14

220R

BC337

+5V

PWR DET

RESET

220R

R17

5K6

R18

2K2

+5V

BC337

R19

4K7

CN8

MCLK_LOCK

10U 16V EL

5K6

R20

82R

R16

4k7

+5V

1N5819

CCW

R21

100R

LED 3MM BLUE

+5V

OPT

GND

IR REC 3/5V 36KHZ

BC337

R22

10k

To enhance viewing, please print to A3 6

Cambridge Audio Azur 640C V2 CD Player

AP175164 Front Panel PCB Layout (Top Side)

To enhance viewing, please print to A3 7

Cambridge Audio Azur 640C V2 CD Player

AP175164 Front Panel PCB Layout (Bottom Side)

To enhance viewing, please print to A3 8

AP17519/2

AP PART

NO VALUE DESCRIPTION QTY COMPONENT

IDENT FACTORY PART NO NOTES

RESISTORS

82R 0.25W 1% Metal Film Resistor 1 R20 1011-002014-000

100R 0.25W 1% Metal Film Resistor 2 R15 1011-001014-000

220R 0.25W 1% Metal Film Resistor 2 R1, 14 1012-201014-000

1K5 0.25W 1% Metal Film Resistor 1 R8 1011-502014-000

2K2 0.25W 1% Metal Film Resistor 1 R18

2K7 0.25W 1% Metal Film Resistor 1 R5 1012-702014-000

3K3 0.25W 1% Metal Film Resistor 1 R11 1013-302014-000

4K7 0.25W 1% Metal Film Resistor 3 R12, 16, 19 1014-702014-000

5K6 0.25W 1% Metal Film Resistor 2 R2, 17

10K 0.25W 1% Metal Film Resistor 3 R6, 13, 22 1011-003014-000

27K 0.25W 1% Metal Film Resistor 1 R3 1012-703014-000

33K 0.25W 1% Metal Film Resistor 1 R4 1013-303014-000

68K 0.25W 1% Metal Film Resistor 1 R10 1016-803014-000

82K 0.25W 1% Metal Film Resistor 2 R7, 9 1018-203014-000

100R Multi turn pot 1 R21

1nF Ceramic 50V 10% 5mm pitch 2 C2, 3 1100-102043-000

100n Ceramic 50V X7R 10% 5mm pitch 2 C1, 4

10uF 25V Radial Electrolytic, 20%, 1 C5, 6 1102-100024-000

PY214 BC337-25 NPN small signal transistor TO-92 3 Q1, 3, 4 1300-337000-100

PY219 BC327-25 PNP small signal transistor TO-92 1 Q2 1301-327000-100

PY054 TSOP1836SS3V IR Receiver module (VISHAY) 1 U2 3001-183600-001

PIC16C505 Microchip 14 pin 8 Bit PIC 1 U3 4116-505054-200

Programmed with:

AP18402/1 640CV2

V1.0.hex

PD012 1N5819 Schottky diode 1 D1

PY064 Blue LED 3mm Blue flat top LED 1 D2 3100-000030-003

PY043 Tact switch TACT SW 2P2T KPT-1105A (5MM) 6 SW1, 2, 3, 4, 5, 6 2400-020200-000

PY936 AP17522/1 Positive LCD for V2 1 LCD1 3110-066350E000

PY806 LCD back light assembly 1 6600-990095-000

Cambridge Azur 640C V2 Front Panel PCB Assembly BOM

MISCELLANEOUS

SEMICONDUCTORS

TRANSISTORS

CAPACITORS

Note: resistors, capacitors and other 'generic' electronic components are not usally stocked

by the manufacturer. Please obtain these locally. 9

AP17519/3

AP Part

No Value Description Qty Component Ident Factory Part No Notes

82R 0.25W 1% Metal Film Resistor 1 R20 1011-002014-000

100R 0.25W 1% Metal Film Resistor 2 R15 1011-001014-000

220R 0.25W 1% Metal Film Resistor 2 R1, 14 1012-201014-000

1K5 0.25W 1% Metal Film Resistor 1 R8 1011-502014-000

2K2 0.25W 1% Metal Film Resistor 1 R18

2K7 0.25W 1% Metal Film Resistor 1 R5 1012-702014-000

3K3 0.25W 1% Metal Film Resistor 1 R11 1013-302014-000

4K7 0.25W 1% Metal Film Resistor 3 R12, 16, 19 1014-702014-000

5K6 0.25W 1% Metal Film Resistor 2 R2, 17

10K 0.25W 1% Metal Film Resistor 3 R6, 13, 22 1011-003014-000

27K 0.25W 1% Metal Film Resistor 1 R3 1012-703014-000

33K 0.25W 1% Metal Film Resistor 1 R4 1013-303014-000

68K 0.25W 1% Metal Film Resistor 1 R10 1016-803014-000

82K 0.25W 1% Metal Film Resistor 2 R7, 9 1018-203014-000

200R BOCHEN 3296P side adjst MULTI

turn pot 1 R21 *Revised

1nF Ceramic 50V 10% 5mm pitch 2 C2, 3 1100-102043-000

100n Ceramic 50V X7R 10% 5mm pitch 2 C1, 4

10uF 25V Radial Electrolytic, 20%, 1 C5, 6 1102-100024-000

PY214 BC337-25 NPN small signal transistor TO-92 3 Q1, 3, 4 1300-337000-100

PY219 BC327-25 PNP small signal transistor TO-92 1 Q2 1301-327000-100

PY054 TSOP1836SS

3V IR Receiver module (VISHAY) 1 U2 3001-183600-001

PIC16C505 Microchip 14 pin 8 Bit PIC 1 U3 4116-505054-200 Programmed with:

AP18402/1 640CV2 V1.0.hex

PD012 1N5819 Schottky diode 1 D1

PY064 Blue LED 3mm Blue flat top LED 1 D2 3100-000030-003

PY043 Tact switch TACT SW 2P2T KPT-1105A (5MM) 6 SW1, 2, 3, 4, 5, 6 2400-020200-000

PY936 AP17522/1 Positive LCD for V2 1 LCD1 RCL IS06635P00V0

AP13344/* LCD holder 1

PY806 LCD back light assembly 1

Semiconductors

Miscellaneous

* PLEASE NOTE: All components that appear in Red or Bold are additional items to this Bom AP17519/3 and will not appear on AP17519/2.

Cambridge Azur 540C/640C V2 Front Panel PCB Assembly BOM - Revised

Resistors

Capacitors

Transistors

Note: resistors, capacitors and other 'generic'electronic components are

not usually stocked by the manufacturer. Please obtain these locally.

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