Cambridge-840C-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 840CIssue Date: 07thFebruary 2007 SERVICE MANUAL SPECIFICATIONS: D/A Converters Dual Analog Devices Total correlated jitter 130pS AD1955 24 bit DACs Crosstalk 1kHz -130dB Digital Filter Analog Devices Blac

2、k Fin Crosstalk 20kHz -114dB ADSP-BF532 32 bit DSP Performing ATF Output impedance 50 ohms Up sampling to 24 bit 384 kHz Digital input word widths supported 16-24 bit Analog Filter 2 Pole Fully Differential Linear Phase Bessel Filter Digital output word widths supported 16, 20, 24 bit Frequency Resp

3、onse 20Hz 20kHz (+-0.1dB)Digital input sampling 32kHz, 44.1kHz,48kHz,88.2kHz frequencies supported 96kHz, 176.4kHz, 192kHz THD 1 KHz 0dBFs 0.0005% Digital output sampling 32 kHz 192 kHz pass through frequencies supported (including 44.1 kHz for CD) 48 kHz, 96 kHz, 192 kHz up sampled THD 1Khz -10dBFs

4、 0.0004% Audio output up sampling Fixed 24 bit, 384kHzTHD 20 KHz 0dBFs 0.0007% Dimensions (H x W x D) 115 x 430 x 360 mm (4.5 x 16.9 x 14.7”) IMD (19/20 kHz) 0dBFs 120dB (24 kHz) S to N ration, A weighted 113dB AP21184/1 1RadioFans.CN 收音机爱 好者资料库840C SERVICE MANUALTABLE OF CONTENTS Safety Precautions

5、 & Important Notes 3Laser Safety Precautions 4Exploded Diagram 5Exploded Diagram Parts List 6Functional Block Diagram 7Front Panel Circuit Diagram 8Front Panel PCB Layout (Top Side) 9Front Panel PCB Layout (Bottom Side) 10Front Panel PCB BOM 11Servo Circuit Diagram (DAC) 12Servo Circuit Diagram (Ser

6、vo) 13Servo PCB Layout (Top Side) 14Servo PCB Layout (Bottom Side) 15 Servo PCB BOM 16-17 Voltage Select Switch Circuit Diagram 18 Voltage Select Switch PCB Layout (Top Side) 19 Voltage Select Switch PCB Layout (Bottom Side) 20 Voltage Select Switch PCB BOM 21 DAC DSP Circuit Diagram (Abus) 22 DAC T

7、est Signals (Main Signal Paths General) 23 DAC DSP Circuit Diagram (DSP) 24 DAC Test Signals (Main Signal Paths General) 25 DAC DSP Circuit Diagram (Filters) 26 DAC Test Signals (Main Signal Paths Left Channel) 27-28 DAC Test Signals (Main Signal Paths Right Channel) 29-30 DAC DSP Circuit Diagram (S

8、upply) 31 DAC DSP Circuit Diagram (Flash) 32 DAC DSP Board Layout (Top Side) 33 DAC DSP Board Layout (Bottom Side) 34 DAC DSP PCB BOM 35-37 Mains PCB Circuit Diagram 38 Mains PCB Board Layout (Top Side) 39 Mains PCB Board Layout (Bottom Side) 40 Mains PCB BOM 41 IC Pin Layout Details 42-50 Circuit D

9、escription 51 Software Instructions 52-61 2RadioFans.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 triangle is intended to alert the user or se

10、rvice 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 service agent to the presence of important oper

11、ating 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 manual. For continued compliance all componen

12、ts 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 property damage resulting therefrom. 6.

13、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 from a PCB Notice that the minus side of

14、a tantalum capacitor may be damaged by heat COPYRIGHT NOTICE. 2007 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, published, or broadcast without the exp

15、ress 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 p

16、roducts.3LASER SAFETY PRECAUTIONS Caution: These labels may be attached to the unit on the rear and inside toinform that it contains a laser component. Use of controls or adjustments, orperformance of procedures other than those specified within the service orinstruction manual may result in hazardo

17、us radiation exposure.WARNING!1. Service should only be performed by qualified personnel.2. This equipment has been designed and manufactured to meetinternational safety standards; it is the legal responsibility of the repairer toensure that these safety standards are maintained.3. Any repairs must

18、be made in accordance with the relevant safetystandards.4. It is essential that safety and EMC critical components are replaced withCambridge Azur approved parts only.CLASS 1 LASER PRODUCTNOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNITThe laser diode in the optical pick-up block may suffer

19、electrostatic breakdown because of thepotential difference generated by the charged electrostatic load, etc. on clothing and the humanbody.During repair, pay attention to electrostatic breakdown and also use the procedure in the printedmatter which is included in the repair parts.The flexible board

20、is easily damaged and should be handled with care.NOTES ON LASER DIODE EMISSION CHECKThe 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. Therefore, when checking the laser diodeemission, observe from more th

21、an 30cm away from the objective lens.4Cambridge Audio Azur 840C CD PlayerExploded DiagramTo enhance viewing, please print to A35Cambridge Audio Azur 840C CD PlayerExploded Diagram Parts Listnoi tpi r cseDecnere feRyrotcaFt raPPA. feRgniwarD1PY12287003-008010E006Screw M3*8 M/C 1/K Torx Recess ZN-PT (

22、Silver)1PY12297003-008010E001Screw M3*8 M/C 1/K Torx Recess BLK-PT (Black)2PY12186574-010003E000-01Azur 840C Top Panel (Black)2PY12196574-010003E000-02Azur 840C Top Panel (Silver)3PY11276574-150013E000-01Azur 840A Side Panel, (Black)3PY11286574-150013E000A01Azur 840A Side Panel, Silver4PY11104006-84

23、0058E001840C DAC Module 5PY12173200-080551E000Transformer AC115/230V T08055AAzur-840C6PY9409692-006002-201Azur V2 CD Mechan assy with Sanyo DA11V Rev ANot ShownPY9413009-110000-002V2 CD Sanyo Laser DA11V7PY12208584-001010E301Azur 840C UK/EU Black Front Panel Assy7PY12218584-001000E301Azur 840C UK/EU

24、 Silver Front Panel Assy8PY12224006-840001E000Azur 840C Display Module MBCF00003B00V0 9PY12236574-010002E000-01Azur 840C Front Panel -B Artwork (Print Cool Grey 7C) Black9PY12246574-010002E000A01Azur 840C Front Panel-S Artwork (Print Coll Grey 8C) Silver10PY12259484-001000E041Azur-840C Control PCB A

25、ssy Rev A11PY12269484-001000E181Azur-840C Servo PCBA Rev A12PY5546564-010006-000-01Azur 640C.B CD Door W/Silkscreen PMS Cool Grey 7C12PY5686564-010006-000A01Azur 640C.S CD Door W/Silkscreen PMS Cool Grey 7C13PY11226074-150004E000Azur 840A Plastic Foot (Black) AP16837*13PY11246074-150004E000A01Azur 8

26、40A Plastic Foot (Silver) AP16837*14PY11659805-084000E001Azur 840A/C Remote Control Assy Rev ANot ShownPY12275100-840100E100Azur 840C Multilingual User Manual (AP18655*)Exploded Drawing Parts List6Cambridge Audio Azur 840C CD PlayerFunctional Block DiagramDSPDC SERVO CIRCUITCURRENTSOURCECIRCUITI TO

27、VI TO VDIFFERENTIAL FILTER/AMPDIFFERENTIAL TO SINGLE ENDEDUNBALANCED O/PBALANCED O/PDACWDCLKBITCLKSDATA LRESETMUTEDAC CONTROL I/FDAC1 MCLK24.576 MHzCLOCK + BUFFERSPDIF TX CLKSPDIF RX MCLKDAC2 MCLKDAC1 MCLKDSP CLKWDCLKBITCLKSDATA LSPDIF RX SET UP I/FWDCLKBITCLKSDATA L(SPDIF SUBCODE DATA)SPDIF TX SET

28、UP I/FAUDIO DATA LEFTFLASH MEMORYSPDIF RECEIVERTRANSMITTERAUDIO DATA L&RSPDIFFLASH ADDRESS & DATASPDIF TO LOGICLEVELSPDIF TO LOGICLEVELSPDIF I/P 1SPDIF I/P 2SPDIF I/P SWITCHINGOPTICALCOAXCOAXOPTICALLOGIC TO SPDIFLEVELSPDIF O/PCOAXOPTICAL44.1 kHz PASS THRO SETTING44.1/48/96/192kHz44.1 kHz FROM CDSERV

29、OPASS THRO SETTING48/96/192 kHz UP/DOWN SAMPLEDCDSERVO TOMECHCONNECTIONSDC SERVO CIRCUITCURRENTSOURCECIRCUITI TO VI TO VDIFFERENTIAL FILTER/AMPDIFFERENTIAL TO SINGLE ENDEDUNBALANCED O/PBALANCED O/PDACWDCLKBITCLKSDATA LRESETMUTEDAC SET UP I/FDAC2 MCLKDAC PCBMECH AND SERVO PCBBCPOVRESHCEMSPDIF I/P SWI

30、TCHINGCD SERVO TO LCD CONNECTIONSPSUMICROCONTROLLER/DSPINTERFACEMICRO TO LCD(DOT MATRIX)MICROCONTROLER (PIC)RS232IR UNMODI/PO/PI/P IR MODDRAWER OPEN CLOSE CONNECTIONSDRAWER OPEN CLOSE CONNECTIONSLCDDRAWER SPEEDCONTROLKEY COMMANDS TO SERVO (DIGITAL POT FOR RES LADDER I/P)DIGITAL POTK1 K2 I/PFRONT PAN

31、NEL BUTTONSMICRO TOLCD(DOT MATRIX)FRONT PANEL IR MODI/P IR MODFROMREMOTESPDIF I/P SWITCHINGCONTROLDSP CLKAUDIO DATA L&RSPDIF TX CLKSPDIF RX MCLKRS232 (LOGIC LEVELS)MODULATED IRLEFT CHRIGHT CHRESETU BITRESET(SPDIF SUBCODE DATA)C BIT(SPDIF SUBCODE DATA)U BITX1 U15U4CN3U5CN4U10CN5U23U23U6U7U944.1 kHz F

32、ROM CDSERVO44.1 kHz FROM CDSERVOU8FRONT PANEL PCBU11U12U13U19 U20U32U130U131U33U34U38U37U39U40U41U52 Q7 Q9CN12CN13CN14U35U50U46U53 Q3 Q5U1RELAYMUTE CIRCUITAUDIO O/PRL1 RL2 RL3 Q2 Q4 Q8OEI (PIC MUTE)U32U5U4UU28U1 U2 U3 Q1AUDIO DATA LEFTTo enhance viewing, please print to A37Cambridge Audio Azur 840C

33、CD PlayerAP19135/4 Front Panel Circuit DiagramCONTROL BUSSPI DATARXSPI INTSPI DATATXSPI CLKSPI CSSERIAL TXSERIAL RXOE1SO1_U7SO2_U7SO1_U9MUTEC11n 50V X7RC21n 50V X7R1234567CN1CONN-H7K1K2POWER DETECTRESETGND+5VREMOTE12345678CN2CONN-H812345678CN3CONN-H81234567CN4CONN-H7+5V+5V3OPT1GND2U1TSOP18 IR RECEIV

34、ERC3100nR147RSW1StandbySW2MenuSW6StopSW3SelectSW4Open/CloseSW5Play/PauseSW7Back SkipSW8Forward SkipR2220RLEDMCLR/VPP1RA0/AN02RA1/AN13RA2/AN24RA3/AN3/VREF5RA4/T0CKI6RA5/AN4/SS7RE0/RD/AN58RE1/WR/AN69RB437RB3/PGM36RB235RB0/INT33VDD32VSS31RD7/PSP730RD6/PSP629RB134RD5/PSP528RD4/PSP427RC7/RX/DT26RC5/SDO24

35、RC4/SDI/SDA23RD3/PSP322RD2/PSP221RC6/TX/CK25VDD11VSS12OSC1/CLKIN13OSC2/CLKOUT14RCO/T1OSO/T1CKI15RC1/T1OSI/CCP216RC2/CCP117RC3/SCK/SCL18RD0/PSP019RE2/CS/AN710RD1/PSP120RB538RB6/PGC39RB7/PGD40U2PIC16F874A+5VR356RR456RC4100nFX1CRYSTALFREQ=20MHzC522pFC622pFC710U 16VR5100RC8100nFR610K+5VVssVddVoRSR/WED0D

36、1D2D3D4D5D6D7LED ALED KC9100nF+5VSERVORESETIR OUTC10100nF+5VLEDSERVORESETTo Servo BoardLCD Connector 2LCD Connector 1From Servo Board (LCD)+5VR9220RC1110U 16VRESETRESET+5VLCDC12100nFON/OFFBRIGHTBRIGHTON/OFFQ1BC337R1210KQ2BC337R1310KQ3BC337Q4BC337R141K2R1510KH014A16GND8A07W012L13L013H11W14A25SDA10SCL

37、9VCC16U3DS1803+5V_SERVO+5V_SERVO123456789CN6JST 2MM S9B-PH-KS12345678CN7JST 2MM S8B-PH-KSR1810KR1910KSEG1516SEG1415SEG1314SEG1213SEG1112SEG1011SEG910SEG89SEG78SEG67SEG56SEG45SEG34SEG23SEG12SEG01SEG1617SEG1718SEG1819COM120COM221COM322COM423NC24CN10LCD 740CCOM1COM1COM2COM3COM4COM2COM3COM4+5VR20100RR21

38、100RR22100RR23100RR24100RR25100RR26100RR27100RR28100RR29100RR30100RR31100RR32100RCLKSD TXSD RXCSINTRSEOSC1OSC2U7_SO1U7_S02U9_S01SCLD4D5D6D7SDASERIAL TXSERIAL RXSERVO RESETRESETOE1#MUTEIR OUTIR IND1LED 3MMBLUEC1310U 16VC14100nF1P1PAD EMC M31P2PAD EMC M31P3PAD EMC M3C151nFC161nFC171nFR10300R132R11PRE

39、MULTI500RMCLR4GP43CLKIN2Vss8GP07GP16GP25Vdd1U4PIC12C50812345CN8DATA12345CN9DATAR33680RR34680RD2BZX79C5V1500MWD3BZX79C5V1500MWMGND+5V_SERVOMGNDFIN1GND12RIN3GND25VCC6OUT27COM8OUT19U5BA6218MGND+8V1234561a2a3a4a5a6a787a8aCN5CONN-8HEAD DUALBOTD41N4004D51N4004C1810U16VC19100nF+8VR35100KLED1P4PAD EMC M31P5

40、PAD EMC M3C201nFC211nFC22100nFTO DAC BOARD CN8 (SPI)TO DAC BOARD CN9 (RS232/MUTE/SPDIF CNTRL)FROM SERVO BOARD DRAWER OPEN/CLOSE (SPI)TO MECH DRAWER OPEN/CLOSE (SPI)R7100RR810ORR16R METAL 1/8W4k71/8W MetalFilmR17R METAL 1/8W4k71/8W MetalFilmR36R METAL 1/4W220R1/4W MetalFilmR37R METAL 1/4W220R1/4W Met

41、alFilmD61N4004D71N4004To enhance viewing, please print to A38Cambridge Audio Azur 840C CD PlayerAP19135/3 Front Panel Board Layout (Top Side)To enhance viewing, please print to A39Cambridge Audio Azur 840C CD PlayerAP19135/3 Front Panel Board Layout (Bottom Side)To enhance viewing, please print to A

42、310AP19138/5AP Part No.ValueDescriptionFactory Part NoQtyComponent IdentNotes47R0.25 W 1% Metal Fil m1R156R0.25 W 1% Metal Fil m2R3, R4100R0.25 W 1% Metal Fil m16R5, R7, R8, R20-R3 2220R0.25 W 1% Metal Fil m1012-201014E0004R2, R9, R36, R3 7300R0.25 W 1% Metal Fil m1R10680R0.125 W 1% Metal Fil m1016-

43、801016E0202R33, R341K20.25 W 1% Metal Fil m1R144K70.25 W 1% Metal Fil m2R16, R1710k0.25 W 1% Metal Fil m6R6, R12, R13, R15,R18, R1 9100K0.25 W 1% Metal Fil m1R35PRE MULTI 500R Side adjust Footprint 9.5 x 4.5 mmVR B500 OHM +-10% WI 3296NOXOX-XA1-0131R11Mount on bottom side of PCB with screw adjust fa

44、cing upwards 22p6C, 5C2mm0 . 5=hc t i P,OPNc imareCF12C, 02C, 71C-51C, 2C, 1C7mm0 . 5=hc t i PV05c imareCFn19mm0 . 5=hc t i PV05c imareCFn001C3, C4, C8-C10, C12, C14, C19, C2210uFMiniature 16V Pitch 2.5mm Height 5.2mm4C7, C11, C13, C181U1REVI ECERR IPOSTV3SS6381POSTMount 13.5mm height from PCB, Plea

45、se support using foam pad spacer2U1CI PP/ I -A778F61CI PProgramme with AP20058/2, Please add version label - See AP Service Dept.PY983DS18030-050DIGITAL PO T4118-030051E2001U34U1CI PP/ I -A805C21CI PProgramme with AP20231/1, Please add version label - See AP Service DeptPY260BA62185U1CIREVIRDDCPY214

46、BC337NPN SMALL SIGNA L4Q1-Q41D1EULBDEL5V1 ZENE RBZX79C5V11402-511201E20 02D2, D37D, 6D, 5D, 4D4RE I F ITCERESOPRUPLARENEG4004N1PY043TACT SWITCHTACT SW 2P2T KPT-1105A (5MM)8SW1-SW8MPP03-+1X1SU94-CHFP02LCMM5 . 3TUOBATHGI EH, zHM02LATSYRCzHM02MISCELLANEOUSCambridge Audio Azur 840C Front Panel PCB BOMRE

47、SISTORSCAPACITORSSEMICONDUCTORSTRANSISTORSDIODESNote: resistors, capacitors and other generic electronic components arenot usually stocked by the manufacturer. Please obtain these locally.11Cambridge Audio Azur 840C CD PlayerAP18432/3 CD Servo PCB Schematic (DAC)SDATA1DEM/SCL2LRCK3MCLK4AOUTL8VA+7AGN

48、D6AOUTR5U5CS4333/38C410.1uFC4010uF 25VC3910uF 25VC3210uF 25VR7515KR8215KR8012KR7412KC42390pFC38390pF32184U4:ANJM2100567U4:BNJM2100R7347KC3310pFC3410uF 25V123CN9GNDR7156KC4310uF 25VR7056KC350.1uF+5VL.CHR.CH+8VR8147KC3610pFR7920KR7220KC37220uF 16V123CN10GNDL.CHR.CHGND12345CN13DIG DATA12CN14MCLKR68100R

49、R69100R345RL1:B12RL1:A678RL1:CR83120R 0.5WR881K14.5VQ38050Q48050C5547uF 16VR89330kD1IN4148R90390RD7IN4004R87100RQ69012R85560RR863K9C634.7uF 16VD6IN400412345CN11GNDROUTLOUTMUTE1MUTEACR844K7Q59012C881nFD121N4001To enhance viewing, please print to A312Cambridge Audio Azur 840C CD PlayerAP18432/3 CD Ser

50、vo PCB Schematic (Servo)SEG1477SEG1576SEG1675SEG1774SEG1873NC72NC71NC70NC69NC68NC67NC66NC65NC64NC63NC62NC61NC60NC59NC58NC57NC56NC55NC54NC53FL/TL52VDD51SEG1378SEG1279SEG1180SEG1081SEG982SEG883SEG784SEG685SEG586SEG487SEG388SEG289SEG190SEG091COM392COM293COM194COM095VLC96NC97NC98NC99VDD100VSS50(BOOT)49V