Cambridge-640CV2-cd-sm维修电路原理图.pdf
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1、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 D
2、ouble 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 24 kHz) 90dB S to N ration, A weighted 104dB Total correlated jitter 160pS Crosstalk 1kHz -100dB Crosstalk 20kHz -99dB Output impedance
3、50 ohms Dimensions (H x W x D) 70 x 430 x 310 mm Weight 4.6kg (10.1lbs) AP19501/2 1RadioFans.CN 收音机爱 好者资料库640C V2 SERVICE MANUAL Revision 2TABLE OF CONTENTS Safety Precautions & Important Notes 3Laser Safety Precautions 4Exploded Diagram 5Front Panel PCB Schematic (Issue 3) 6Front Panel PCB Layout (
4、Top Side) 7Front Panel PCB Layout (Bottom Side) 8Front Panel PCB Assembly BOM (Issue 2) 9Front Panel PCB Assembly BOM (Issue 3) 10Servo PCB Schematic 11Servo PCB Layout (Top Side) 12Servo PCB Layout (Bottom Side) 13Servo PCB Assembly BOM 14-15DAC Board PCB Schematic (Issue 6) 16 DAC Board PCB Schema
5、tic (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 P
6、CB 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 Layou
7、t (Bottom Side) 34 Voltage Selector PCB Assembly BOM 35 IC Pin Layout Details 36-442RadioFans.CN 收音机爱 好者资料库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 tri
8、angle 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 shockto persons. 3. The exclamation point within an equilateral triangle is intendedto alert the user or servic
9、e agent to the presence of important operating and maintenance (Servicing) instructions in the literatureaccompanying 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 manu
10、al. 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 manufacturerswarranty; furthermore the manufacturer cannot accept responsibility for personal injury or
11、 property damage resulting therefrom. 6. When servicing, care should be taken to observe the original routing anddressing of the leads and it should be confirmed that they have been returned to normal after re-assembly.Notes on chip component replacementNever reuse a component that has been removed
12、from a PCB Notice that the minus side of a tantalum capacitor may be damaged by heat COPYRIGHT NOTICE. 2006 Audio Partnership PLC. All rights reserved.Cambridge Audio and Azur are registered trademarks for Audio Partnership PLC. This documentmay not be reproduced, distributed, transmitted, displayed
13、, 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 repair
14、ing and servicing Audio Partnership PLC products.3LASER 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
15、 or instruction manual may result in hazardous radiation exposure. WARNING!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 th
16、ese 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 PRODUCTNOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE U
17、NIT 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 m
18、atter 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 bythe objective lens in the optical pick-up block. Ther
19、efore, when checking the laser diode emission, observe from more than 30cm away from the objective lens. 45Cambridge Audio Azur 640C V2 CD PlayerAP175163 Front Panel PCB SchematicSW1PLAY/PAUSESW2STOPSW3OPEN/CLOSE12CN1CONN-H2SEG1116SEG1015SEG914SEG813SEG712SEG611SEG510SEG49SEG38SEG27SEG16SEG05COM34CO
20、M23COM12COM01SEG1217SEG1318SEG1419SEG1520SEG1621SEG1722SEG1823LCD1LCDPACKAGE=LCD D60012345678CN2CONN-H812345678CN3CONN-H81234567CN4CONN-H7R327KR433KR52K7R610KR782KR81K5R982KC1100n 50V X7R+5VC21n 50V X7RC31n 50V X7RR1068KR113K3+5VFORWARD SKIPFORWARD SEARCHBACKWARD SKIPBACKWARD SEARCHSW4SW-TACTSW5SW-T
21、ACTC4100n 50V X7RR15100RVSS14RB211RC46RC28RC37RB112RB4/OSC2/CLKOUT3RB013VDD1RB5/OSC1/CLKIN2RB3/MCLR/VPP4RC5/TOCKI5RC19RC010U3PIC16C505SW6SW-TACTP1PADP2PADR124K7R1310KQ2BC327+5V123CN5CONN-H3123CN6CONN-H31234567CN7CONN-H7C610uF 10V ELR14220RQ1BC337K1K2+5VPWR DETRESETR1220RR175K6R182K2+5VQ4BC337R194K71
22、2CN8MCLK_LOCKC510U 16V ELR25K6R2082RR164k7+5VD11N58192CCW1CW3R21100RD2LED 3MM BLUE+5V3OPT1GND2U2IR REC 3/5V 36KHZQ3BC337R2210kTo enhance viewing, please print to A36Cambridge Audio Azur 640C V2 CD PlayerAP175164 Front Panel PCB Layout (Top Side)To enhance viewing, please print to A37Cambridge Audio
23、Azur 640C V2 CD PlayerAP175164 Front Panel PCB Layout (Bottom Side)To enhance viewing, please print to A38AP17519/2AP PART NOVALUEDESCRIPTIONQTYCOMPONENTIDENTFACTORY PART NONOTESRESISTORS82R0.25W 1% Metal Film Resistor1R201011-002014-000100R0.25W 1% Metal Film Resistor2R151011-001014-000220R0.25W 1%
24、 Metal Film Resistor2R1, 141012-201014-0001K50.25W 1% Metal Film Resistor1R81011-502014-0002K20.25W 1% Metal Film Resistor1R182K70.25W 1% Metal Film Resistor1R51012-702014-0003K30.25W 1% Metal Film Resistor1R111013-302014-0004K70.25W 1% Metal Film Resistor3R12, 16, 191014-702014-0005K60.25W 1% Metal
25、 Film Resistor2R2, 1710K0.25W 1% Metal Film Resistor3R6, 13, 221011-003014-00027K0.25W 1% Metal Film Resistor1R31012-703014-00033K0.25W 1% Metal Film Resistor1R41013-303014-00068K0.25W 1% Metal Film Resistor1R101016-803014-00082K0.25W 1% Metal Film Resistor2R7, 91018-203014-000100R Multi turn pot1R2
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