Cambridge Audio 640C V2 Service Manual
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Cambridge Audio 640C V2 Service Manual

Cambridge audio 640c v2 cd player service manual
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Issue Date: 30
November 2005
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Revised Date 1
Issue: 20
November 2006
_________________________________________________________________________________
SERVICE MANUAL
_________________________________________________________________________________
SPECIFICATIONS:
D/A Converter
Filter
Frequency Response (+/-0.1dB)
THD @ 1Khz 0dBFs
THD @ 1Khz -10dBFs
THD @ 20Khz 0dBFs
IMD (19/20 kHz) 0dBFs
Linearity @ -90dBFs
Stop band rejection (>24 kHz)
S to N ration, A weighted
Total correlated jitter
Crosstalk @1kHz
Crosstalk @20kHz
Output impedance
Dimensions (H x W x D)
Weight
Gallery Court Hankey Place London SE1 4BB UK
Tel: +44 (0)20 7940 2200 Fax: +44 (0)20 7940 2233
640C V2
Dual Wolfson WM8740
24-Bit/192kHz capable
4 Pole Dual Differential
Double Virtual Earth balanced
20Hz – 20kHz
<0.0010%
<0.0005%
<0.0070%
<0.0008%
+/- 0.5dB
> 90dB
>104dB
<160pS
<-100dB
<-99dB
<50 ohms
70 x 430 x 310 mm
4.6kg (10.1lbs)
AP19501/2
1

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Summary of Contents for Cambridge Audio 640C V2

  • Page 1 640C V2 Issue Date: 30 November 2005 Revised Date 1 Issue: 20 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%...

  • Page 2: Table Of Contents

    640C V2 SERVICE MANUAL – Revision 2 TABLE OF CONTENTS Safety Precautions & Important Notes Laser Safety Precautions Exploded Diagram Front Panel PCB Schematic (Issue 3) Front Panel PCB Layout (Top Side) Front Panel PCB Layout (Bottom Side) Front Panel PCB Assembly BOM (Issue 2)

  • Page 3: Safety Precautions & Important Notes

    COPYRIGHT NOTICE. © 2006 Audio Partnership PLC. All rights reserved. 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.

  • Page 4: Laser Safety Precautions

    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.

  • Page 6: Front Panel Pcb Schematic (Issue 3)

    Cambridge Audio Azur 640C V2 CD Player LCD1 COM0 COM1 10uF 10V EL COM2 COM3 SEG0 SEG1 100n 50V X7R SEG2 SEG3 SEG4 CONN-H8 SEG5 SEG6 RB5/OSC1/CLKIN SEG7 RB4/OSC2/CLKOUT SEG8 RB3/MCLR/VPP SEG9 RC5/TOCKI SEG10 SEG11 SEG12 PIC16C505 SEG13 SEG14 SEG15...

  • Page 7: Front Panel Pcb Layout (Top Side)

    Cambridge Audio Azur 640C V2 CD Player To enhance viewing, please print to A3 AP175164 Front Panel PCB Layout (Top Side)

  • Page 8: Front Panel Pcb Layout (Bottom Side)

    Cambridge Audio Azur 640C V2 CD Player To enhance viewing, please print to A3 AP175164 Front Panel PCB Layout (Bottom Side)

  • Page 9: Front Panel Pcb Assembly Bom (Issue 2)

    AP17519/2 Cambridge Azur 640C V2 Front Panel PCB Assembly BOM AP PART COMPONENT VALUE DESCRIPTION FACTORY PART NO NOTES IDENT RESISTORS 0.25W 1% Metal Film Resistor 1011-002014-000 100R 0.25W 1% Metal Film Resistor 1011-001014-000 220R 0.25W 1% Metal Film Resistor...

  • Page 10: Front Panel Pcb Assembly Bom (Issue 3)

    * PLEASE NOTE: All components that appear in or Bold are additional items to this Bom AP17519/3 and will not appear on AP17519/2. AP17519/3 Cambridge Azur 540C/640C V2 Front Panel PCB Assembly BOM - Revised AP Part Value Description Component Ident...

  • Page 11: Servo Pcb Schematic

    Cambridge Audio Azur 640C V2 CD Player REMOTE REMOTE PWR DET RESET CN21 CONTROL KEYS SEG18 SEG17 SEG16 FP DIS SEG15 SEG14 100nF SEG13 100nF 14.5V SEG12 IN4004 IN4004 CN19 27R 1W 7808 7805 SEG11 T2AL SEG10 AC IN IN4004...

  • Page 12: Servo Pcb Layout (Top Side)

    Cambridge Audio Azur 640C V2 CD Player To enhance viewing, please print to A3 AP129277 Servo PCB Layout (Top Side)

  • Page 13: Servo Pcb Layout (Bottom Side)

    Cambridge Audio Azur 640C V2 CD Player To enhance viewing, please print to A3 AP129277 Servo PCB Layout (Bottom Side)

  • Page 14: Servo Pcb Assembly Bom

    Cambridge Azur 640C V2 Servo PCB Assembly BOM AP18434/1 AP PART VALUE DESCRIPTION COMPONENT IDENT FACTORY PART NO NOTES RESISTORS 0.25 W Metal Film Resistor 1011-000014-000 0.125 W Metal Film Resistor 1 W Carbon Resistor 1002-700310-000 mount off PCB by 5mm 0.125 W Metal Film Resistor...
  • Page 15 Cambridge Azur 640C V2 Servo PCB Assembly BOM AP18434/1 AP PART VALUE DESCRIPTION COMPONENT IDENT FACTORY PART NO NOTES 220uF 16V Electrolytic C56, 65, 84 1102-221014-000 470uF 16V Electrolytic C46, 47, 83 1102-471014-000 3300uF 25V Electrolytic 1102-332024-000 SEMICONDUCTORS PY474 TA2153FN...

  • Page 16: Dac Board Pcb Schematic (Issue 6)

    Cambridge Audio Azur 640C V2 CD Player U20:B DAC CLOCK U20:A 74HC14 MCLK_OUT U20:F 74HC14 U20:D MCLK_LOCK 1N 50V NP0 74HC14 74HC14 DAC CLOCK U20:C U20:E 74HC14 74HC14 U13:A 47N PE 63V NE5532 OSC DIL08 FREQ=16.9344MHz LK28 LK40OTH 10P 50V NPO...

  • Page 17: Dac Board Pcb Schematic (Issue 7)

    Cambridge Audio Azur 640C V2.0 CD Player U20:B DAC CLOCK U20:A MCLK_LOCK 74HC14 LK67 BEAD LK20MM 74HC14 U20:D 1N 50V NP0 U20:F LK43 C114 LK300TH 1N 50V NP0 74HC14 DAC CLOCK U20:C 74HC14 U20:E LK44 LK300TH 1N4148 74HC14 1N4148 U13:A...

  • Page 18: Dac Board (Supply) Pcb Schematic (Issue 6)

    Cambridge Audio Azur 640C V2 CD Player +21V UNREG DAC ANALOGUE_2 DAC CLOCK DAC ANALOGUE 7805 7805 7805 +21V UNREG 1N4004 1N4004 7815 47uF +5V IR 47N PE 63V 47N PE 63V C100 100N 50V 47N PE 63V 7805 4700uF 35V...

  • Page 19: Dac Board (Supply) Pcb Schematic (Issue 7)

    Cambridge Audio Azur 640C V2.0 CD Player +21V UNREG DAC ANALOGUE DAC ANALOGUE_2 DAC CLOCK 7805 7805 7805 +21V UNREG 7815 SB1H100 SB1H100 47uF +5V IR 47N PE 63V 47N PE 63V C100 100N 50V 47N PE 63V 7805 4700uF 35V...

  • Page 20: Dac Board Pcb Layout (Top Side) (Issue 6)

    Cambridge Audio Azur 640C V2 CD Player To enhance viewing, please print to A3 AP17613/6 DAC Board PCB Layout (Top Side)

  • Page 21: Dac Board Pcb Layout (Top Side) (Issue 7)

    Cambridge Audio Azur 640C V2.0 CD Player To enhance viewing, please print to A3 AP17613/ (Revision 7) DAC PCB Board Layout (Top Side)

  • Page 22: Dac Board Pcb Layout (Bottom Side) (Issue 6)

    Cambridge Audio Azur 640C V2 CD Player To enhance viewing, please print to A3 AP17613/6 DAC Board PCB Layout (Bottom Side)

  • Page 23: Dac Board Pcb Layout (Bottom Side) (Issue 7)

    Cambridge Audio Azur 640C V2.0 CD Player To enhance viewing, please print to A3 AP17613/ (Revision 7) DAC PCB Board Layout (Bottom Side)

  • Page 24: Dac Pcb Assembly Bom (Issue 3)

    AP17616/3 Cambridge Azur 640C V2 DAC PCB Assembly BOM AP PART COMPONENT FACTORY PART VALUE DESCRIPTION NOTES IDENT RESISTORS Resistor 0.125W 1% metal film R84, 85 1012-207018-000 Resistor 0.125W 1% metal film Resistor 0.125W 1% metal film R43, 48 1012-200016-000 Resistor 0.125W 1% metal film...

  • Page 25: Dac Pcb Assembly Bom (Issue 6)

    AP17616/3 Cambridge Azur 640C V2 DAC PCB Assembly BOM AP PART COMPONENT FACTORY PART VALUE DESCRIPTION NOTES IDENT C7, 23, 26, 27, 28, 70, 100n NPO/C0G radial ceramic 81, 89, 97, 104, 105, 5MM PITCH 108, 109, 111, 112 100n...
  • Page 26 * PLEASE NOTE: All components that appear in or Bold are additional items to this Bom AP17616/6 and will not appear on AP17616/3. AP17616/6 Cambridge Azur 640C V2 DAC PCB Assembly BOM - Revised AP Part Value Description/Type Component Ident...
  • Page 27 * PLEASE NOTE: All components that appear in or Bold are additional items to this Bom AP17616/6 and will not appear on AP17616/3. AP17616/6 Cambridge Azur 640C V2 DAC PCB Assembly BOM - Revised AP Part Value Description/Type Component Ident...

  • Page 28: Mains Pcb Schematic

    Cambridge Audio Azur 640C V2 CD Player TO ON/OFF SWITCH 20MM T2AL 10U 5A T68-2A MAINS SWITCH 1 SWITCH 2 TO VOLTAGE SELECTOR PCB 1N X1/Y1 C&C F2AL 20MM X2 47N SUPPRESSION PAD EMC M3 CONN-H3 CONN-H3 IEC PCB MOUNT...

  • Page 29: Mains Pcb Layout (Top Side)

    Cambridge Audio Azur 640C V2 CD Player To enhance viewing, please print to A3 AP177122 Mains PCB Layout (Top Side)

  • Page 30: Mains Pcb Layout (Bottom Side)

    Cambridge Audio Azur 640C V2 CD Player To enhance viewing, please print to A3 AP177122 Mains PCB Layout (Bottom Side)

  • Page 31: Mains Pcb Assembly Bom

    AP17715/1 Cambridge Audio 640C V2 Mains PCB Assembly BOM AP PART COMPONENT FACTORY PART VALUE DESCRIPTION NOTES IDENT CAPACITORS 1n X1/Y1 10mm pitch POLYESTER CAPACITOR C1, 2 47N X2 15mm pitch POLYESTER CAPACITOR 15MM PITCH CONNECTORS PY226 IEC-SOCKET 3 WAY IEC CONNECTOR...

  • Page 32: Voltage Select Switch Pcb Schematic

    Cambridge Audio Azur 640C V2 CD Player FROM J4 (Common) VOLTSELECT RF1002B 115/230V Marking BROWN (230V) BLACK (115V) To enhance viewing, please print to A3 AP179772 Voltage Select Switch PCB Schematic...

  • Page 33: Voltage Select Switch Pcb Layout (Top Side)

    Cambridge Audio Azur 640C V2 CD Player To enhance viewing, please print to A3 AP179772 Voltage Select Switch PCB Layout (Top Side)

  • Page 34: Voltage Select Switch Pcb Layout (Bottom Side)

    Cambridge Audio Azur 640C V2 CD Player To enhance viewing, please print to A3 AP179772 Voltage Select Switch PCB Layout (Bottom Side)

  • Page 35: Voltage Selector Pcb Assembly Bom

    Cambridge Audio 640C V2 Voltage Selector PCB Assembly BOM AP17980/1 AP PART VALUE DESCRIPTION COMPONENT IDENT FACTORY PART NO NOTES CONNECTORS RF1002B Voltage Selector 2406-010200-000 Note: resistors, capacitors and other 'generic' electronic components are not usually stocked by the manufacturer. Please obtain these locally.

  • Page 36: Ic Pin Layout Details

    Cambridge Audio Azur 640C V2 CD Player IC Pin Layout Details FRONT PANEL PCB BC337 (Q1, Q3 & Q4) BC327 (Q2) TSOP1836 (U2) PIC16C505 (U3)
  • Page 37 DAC PCB C8050 (Q2 & Q4) C9012 (Q1 & Q3) BC337 (Q5) 7805 (U1, U8, U9, U11, U12, U17 & U21)
  • Page 38 7815 (U3) 7915 (U2) WM8740 (U7 & U10) NE5532 (U4, U5, U6, U13, U18 & U19)
  • Page 39 74HC14 (U20 & U22) APTX179 (U23) TSOP1836 (U14)
  • Page 40 CD4011BE (U16) OP4N25 (U15)
  • Page 41 SERVO PCB TA2153FN (U1) TC9462FG (U2)
  • Page 42 TMP87EP26F-1J15 (U3) 7808 (U7) 7805 (U8)
  • Page 43 TA2092N (U6) C8050D (Q7, Q8, Q11 & Q12)
  • Page 44 9015C (Q1) C8550 (Q9 & Q10)

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