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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 740CIssue Date: 28th September 2007 _ SERVICE MANUAL_ SPECIFICATIONS: D/A converters Dual Wolfson WM8740 24 bit DACs Digital filter Analog Devices Black Fin ADSP-BF532 32 bit DSP Performing ATF Upsampling
2、to 24 bit 384kHz Analog filter 2 Pole Dual Differential Bessel Double Virtual Earth Balanced Frequency Response 20Hz to 20 kHz (+/-0.1dB) THD 1kHz 0dBFs 0.0008% THD 1kHz -10dBFs 0.0005% THD 20kHz )dBFs 0.001% IMD (19/20kHz) 0dBFs 113dB Total correlated jitter 130pS Crosstalk 1kHz -130dB Crosstalk 20
3、kHz -110dB Output impedance 50 ohms Digital input word widths supported 16 24 bit Digital input word widths supported 16, 20, 24 bit Digital input sampling frequencies supported 32kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz Digital output sampling frequencies supported 32kHz 192kHz pass th
4、rough (including 44.1kHz for CD) 48kHz, 96kHz, 192kHz upsampled Audio output upsampling Fixed 24 bit, 384kHz Dimensions H x W x D 115 x 430 x 315mm (4.5 x 16.9 x 12.4”) Weight 6.4Kg (14.1Lbs) AP22735/1 1RadioFans.CN 收音机爱 好者资料库740C SERVICE MANUALTABLE OF CONTENTS Safety Precautions & Important Notes
5、3Exploded Diagram 4Exploded Diagram Parts List 5Front Panel Circuit Diagram 6Front Panel Board Layout (Top Side) 7Front Panel Board Layout (Bottom Side) 8Front Panel PCB BOM 9Servo Circuit Diagram 10Servo Board Layout (Top Side) 11Servo Board Layout (Bottom Side) 12Servo Assembly PCB BOM 13-15 DAC C
6、ircuit Diagram (Supply & Connectors) 16 DAC Circuit Diagram (SPDIF RS232) 17 DAC Circuit Diagram (Flash Connector & Mute) 18 DAC Circuit Diagram (DSP) 19 DAC Circuit Diagram (Analogue Stage) 20 DAC Board Layout (Top Side) 21 DAC Board Layout (Bottom Side) 22 DAC Assembly PCB BOM 23-25 Mains Circuit
7、Diagram 26 Mains Board Layout (Top Side) 27 Mains Board Layout (Bottom Side) 28 Mains PCB BOM 29 IC Pin Layout Details 30-38 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 wi
8、th 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 shockto persons. 3. The exclamation point within an equilateral trian
9、gle is intendedto alert the user or service 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
10、 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 manufacturerswarranty; furthermore the manufacturer cannot ac
11、cept responsibility for personal injury or 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 replacementNeve
12、r reuse a component that has been removed from a PCB Notice that the minus side of 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 repro
13、duced, 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 th
14、e use of official service agents in repairing and servicing Audio Partnership PLC products.3Cambridge Audio Azur 740C CD PlayerExploded DiagramTo enhance viewing, please print to A34Cambridge Audio Azur 740C CD PlayerExploded Diagram Parts Listnoi tpi r cseDrebmuNt raPyrotcaFrebmuNt raPPAfeRgniwarD1
15、PY12287003-008010E006Screw M3*8 M/C torx recess ZN-PT (Silver) 2PY12297003-008010E001Screw M3*8 M/C torx recess BLK-PT (Black)3PY12706574-010009E000-02Azur 740C Top Panel-S (With Painted)3PY12716574-010009E000-01Azur 740C Top Panel-B (With Painted)4PY10326550-150017E001-02Larger Side Panel Silver Pa
16、inted4PY10336550-150017E001-01Larger Side Panel Black Painted5PY12728574-001000E301Azur-740C Silver Front Panel Assy Rev A5PY12738574-001010E301Azur-740C Black Front Panel Assy Rev A6PY12746574-010012E002A01Azur 740C Front Panel-S Artwork AP20101*& AP20102* 6PY12756574-010012E002-01Azur 740C Front P
17、anel-B Artwork AP20101*& AP20102*7PY12769474-001000E041Azur-740C Control PCB Assy Rev A8PY12779474-001000E071Azur-740C Main Power Input PCBA Rev A9PY12789474-001000E181Azur-740C Servo PCBA Rev A10PY11754006-740058E001740C DAC Module11PY9409692-006002-201Azur V2 CD Mechanism Assy with Sanyo DA11V Rev
18、 A12PY9413009-110000-002V2 CD Sanyo Laser DA11V13PY12224006-840001E000Azur 840C Display Module MBCF00003B00V0 14PY11226074-150004E000Azur 840A Plastic Foot (Black)14PY11246074-150004E000A01Azur 840A Plastic Foot (Silver)15PY13563200-082661E000Transformer AC230 (EU) TO8266A for 740C15PY13573200-08259
19、1E000Transformer AC115/60Hz TO8259A for 740C (CU Version)16PY11659805-084000E001Azur 840A/C 740A/C Remote Control Assy Rev A5Cambridge Audio Azur 740C CD PlayerAP19135/4 Front Panel Circuit DiagramCONTROL BUSSPI DATARXSPI INTSPI DATATXSPI CLKSPI CSSERIALTXSERIAL RXOE1SO1_U7SO2_U7SO1_U9MUTEC11n 50V X
20、7RC21n 50V X7R1234567CN1CONN-H7K1K2POWER DETECTRESETGND+5VREMOTE12345678CN2CONN-H812345678CN3CONN-H81234567CN4CONN-H7+5V+5V3OPT1GND2U1TSOP18 IR RECEIVERC3100nR147RSW1StandbySW2MenuSW6StopSW3SelectSW4Open/CloseSW5Play/PauseSW7Back SkipSW8Forward SkipR2220RLEDMCLR/VPP1RA0/AN02RA1/AN13RA2/AN24RA3/AN3/V
21、REF5RA4/T0CKI6RA5/AN4/SS7RE0/RD/AN58RE1/WR/AN69RB437RB3/PGM36RB235RB0/INT33VDD32VSS31RD7/PSP730RD6/PSP629RB134RD5/PSP528RD4/PSP427RC7/RX/DT26RC5/SDO24RC4/SDI/SDA23RD3/PSP322RD2/PSP221RC6/TX/CK25VDD11VSS12OSC1/CLKIN13OSC2/CLKOUT14RCO/T1OSO/T1CKI15RC1/T1OSI/CCP216RC2/CCP117RC3/SCK/SCL18RD0/PSP019RE2/C
22、S/AN710RD1/PSP120RB538RB6/PGC39RB7/PGD40U2PIC16F874A+5VR356RR456RC4100nFX1CRYSTALFREQ=20MHzC522pFC622pFC710U 16VR5100RC8100nFR610K+5VVssVddVoRSR/WED0D1D2D3D4D5D6D7LED ALED KC9100nF+5VSERVO RESETIR OUTC10100nF+5VLEDSERVO RESETTo Servo BoardLCD Connector 2LCD Connector 1From Servo Board (LCD)+5VR9220R
23、C1110U 16VRESETRESET+5VLCDC12100nFON/OFFBRIGHTBRIGHTON/OFFQ1BC337R1210KQ2BC337R1310KQ3BC337Q4BC337R141K2R1510KH014A16GND8A07W012L13L013H11W14A25SDA10SCL9VCC16U3DS1803+5V_SERVO+5V_SERVO123456789CN6JST 2MM S9B-PH-KS12345678CN7JST 2MM S8B-PH-KSR1810KR1910KSEG1516SEG1415SEG1314SEG1213SEG1112SEG1011SEG91
24、0SEG89SEG78SEG67SEG56SEG45SEG34SEG23SEG12SEG01SEG1617SEG1718SEG1819COM120COM221COM322COM423NC24CN10LCD 740CCOM1COM1COM2COM3COM4COM2COM3COM4+5VR20100RR21100RR22100RR23100RR24100RR25100RR26100RR27100RR28100RR29100RR30100RR31100RR32100RCLKSD TXSD RXCSINTRSEOSC1OSC2U7_SO1U7_S02U9_S01SCLD4D5D6D7SDASERIAL
25、 TXSERIAL RXSERVO RESETRESETOE1#MUTEIR OUTIR IND1LED 3MMBLUEC1310U 16VC14100nF1P1PAD EMC M31P2PAD EMC M31P3PAD EMC M3C151nFC161nFC171nFR10300R132R11PRE MULTI 500RMCLR4GP43CLKIN2Vss8GP07GP16GP25Vdd1U4PIC12C50812345CN8DATA12345CN9DATAR33680RR34680RD2BZX79C5V1500MWD3BZX79C5V1500MWMGND+5V_SERVOMGNDFIN1G
26、ND12RIN3GND25VCC6OUT27COM8OUT19U5BA6218MGND+8V1234561a2a3a4a5a6a787a8aCN5CONN-8HEAD DUALBOTD41N4004D51N4004C1810U16VC19100nF+8VR35100KLED1P4PAD EMC M31P5PAD EMC M3C201nFC211nFC22100nFTO DAC BOARD CN8 (SPI)TO DAC BOARD CN9 (RS232/MUTE/SPDIF CNTRL)FROM SERVO BOARD DRAWER OPEN/CLOSE (SPI)TO MECH DRAWER
27、 OPEN/CLOSE (SPI)R7100RR810ORR16R METAL 1/8W4k71/8W Metal FilmR17R METAL 1/8W4k71/8W Metal FilmR36R METAL 1/4W220R1/4W Metal FilmR37R METAL 1/4W220R1/4W Metal FilmD61N4004D71N4004To enhance viewing, please print to A36Cambridge Audio Azur 740C CD PlayerAP19135/3 Front Panel Board Layout (Top Side)To
28、 enhance viewing, please print to A37Cambridge Audio Azur 740C CD PlayerAP19135/3 Front Panel Board Layout (Bottom Side)To enhance viewing, please print to A38AP20712/5AP Part no.ValueDescription/TypeFactory PNQtyComponent IdentNOTES47R 0.25 W 1% Metal Film1R156R0.25 W 1% Metal Film2R3, R4100R0.25 W
29、 1% Metal Film16R5, R7, R8, R20-R32220R0.25 W 1% Metal Film1012-201014E0004R2, R9, R36, R37300R0.25 W 1% Metal Film1R10680R0.125 W 1% Metal Film1016-801016E0202R33, R341K20.25 W 1% Metal Film1R144K70.25 W 1% Metal Film2R16, R1710k0.25 W 1% Metal Film6R6, R12, R13, R15,R18, R19100K0.25 W 1% Metal Fil
30、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 facing upwards 22pFCeramic NPO, Pitch = 5.0mm2C5, C61nFCeramic 50V Pitch = 5.0mm7C1, C2, C15-C17, C20,C21100nFCeramic 50V Pitch = 5.0mm9C3, C4, C8-C10, C12, C
31、14, C19, C2210uFMiniature 16V Pitch 2.5mm Height 5.2mm4C7, C11, C13, C18TSOP1836SS3VTSOP IR RECEIVER1U1PIC16F877A-I/PPIC 1U2Programme with AP20728/4, Please add version labelPY983DS18030-050DIGITAL POT4118-030051E2001U3PIC12C508A-I/PPIC1U4Programme with AP20231/1, Please add version labelPY260BA6218
32、CD DRIVER IC1U5PY214BC337NPN SMALL SIGNAL4Q1-Q4LED BLUE1D1HFB963M-1305V1 ZENERBZX79C5V11402-511201E2002D2, D31N4004GENERAL PURPOSE RECTIFIER4D4, D5, D6, D7PY043TACT SWITCHTACT SW 2P2T KPT-1105A (5MM)8SW1-SW820MHz CRYSTAL20MHz, HEIGHT ABOUT 3.5MMCL20PF HC-49US1X1+- 30PPMTRANSISTORSDIODESMISCELLANEOUS
33、Cambridge Azur 740C Front Panel BOMRESISTORSCAPACITORSSEMICONDUCTORSNote: resistors, capacitors and other generic electronic components arenot usually stocked by the manufacturer. Please obtain these locally.9Cambridge Audio Azur 740C CD PlayerAP20195/5 Servo Circuit DiagramSEG1477SEG1576SEG1675SEG1
34、774SEG1873NC72NC71NC70NC69NC68NC67NC66NC65NC64NC63NC62NC61NC60NC59NC58NC57NC56NC55NC54NC53FL/TL52VDD51SEG1378SEG1279SEG1180SEG1081SEG982SEG883SEG784SEG685SEG586SEG487SEG388SEG289SEG190SEG091COM392COM293COM194COM095VLC96NC97NC98NC99VDD100VSS50(BOOT)49VAREF48AD K147AD K246AD K345PWR DET44NC43NC42OLT41
35、CLT40SLT39D-OPEN38D-CLOSE37BUS336BUS235BUS134BUS033BUCK32CEE31VSSS1XOUT2XIN3RESET4NC5NC6TEST7NC8REMOTE9MUTE10NC11NC12NC13SCK214(SI2)15(SO2)16(WAIT)17NC18NC19NC20NC21NC22NC23NC24NC25NC26NC27NC28CORW29RES30U3TOSHCDMCU1234567CN6LCD12345678CN5LCD12345678CN4LCDR22NCR2122K+5VC83470uF 16VC85100uF 16V+5V+5V
36、DDC84220uF 16VQ139014CX2CRYSTAL7.3728MHzC8125pFC8025pFC79100nFR193K3R1810KD91N4148R201K12345678CN3PROGRAMMINGR6510KR662K2R1710K+5VR2710K+5V+5VDDXVSS77VDD476PXO75PXI74VSS473TESIO172TESIN71DACT70CKSE69DMOUT68IO367IO266IO165IO064VSS363VDD362FLGD61FLGC60FLGB59FLGA58SEL572VREF56DMO55TEBC254TEBC153TEBC052
37、RFGC51XI78XO79XVDD80DVSR81RO82DVDD83DVR84LO85DVSL86TEST187TEST288TEST389BUS090BUS191BUS292BUS393VDD94VSS95BUCK96CCE97TEST498TSMOD99RST100VREF50TRO49FOO48TEZI47TEI46TSIN45SBAD44FEI43RFRP42RFZI41RFCT40AVDD139RFI38SLCO37AVSS136VCOF35VCOREF34PVREF33LPFO32LPFN31TEST01HSO2UHSO3EMPH4LRCK5VSS16BCK7AOUT8DOUT
38、9MBOV10IPF11SBOK12CLCK13VDD114VSS215DATA16SFSY17SBSY18SPCK18SPDA20COFS21MONIT22VDD223TESIO024P2VREF25HSSW26ZDET27PDO28TMAXS29TMAX30U2TC9462FVCC1RFGC2GMAD3FNI4FPI5TNI7MDI8LDO9SEL10TEB112VRO12TEN13TEO14SBAD15FEO16FEN17SEB18VRO19RFRP20BTC21RFCT22PKC23RFRPIN24RFGO25GVSW26AGCIN27RFO28GND29RFN230TPI6U1TA2
39、153FNPW GND1OUT(-)12PVCC13OUT(+)14VIN15VRI6VCI7VIN28OUT(+)29PVCC210OUT(-)211PW GND12PW GND13OUT(-)314PVCC315OUT(+)316VIN317S GND18S VCC19VIN420OUT(+)421PVCC422OUT(-)423PW GND24U6TA2092NR1510KR3910KR1410KR1310KR1210K+5VR1110KR6220KR768KR515KR947KC80.015uFC7647pFC7447uF 16VR810KC750.01uFC60.0027uF123C
40、N1DIGITAL OUT+5VR1047RC1047uF 16VC947uF 16V12345678910111213141516CN16MECH123456CN15MOTOR DRIVE+8VC56220uF 16VC59100nFR6410K+5VC58100nFC57100nFR423K3C270.047uFC260.047uFR413K3C600.047uFC61100nFC1422uF 16VC2847uF 16VC312200pF nostuffC302200pF nostuffR3810K no stuffR3710K no stuffR4010R 1/4WNCNCNCNCNC
41、R36100K no stuffR35100K no stuffX1CRYSTAL16.9344MHzC1715pFC1615pFC150.047uFNCC1847uF 16VNCNCNCNCNCNCNCNCNCNCNCNCR4310KR453K3C24470pFC25470pFR443K3C62100nFR601KR5982KL147uHC660.047uFC65220uF 16VC2047uF 16VC67100nFC64100nFC6822uFR580RR5610KR5510KR5410KR5310KR5256KR5147KR5047KR4947KR4847KR5756KL210uHQ1
42、9015R6215RC69100uF 16VR463K3R473K3C230.047uFC220.047uFR63100KR12K2C13pFR31KC73100pFR210KR4220RC2100nFC720.22uFC30.22uFC4100nFR6127KC71100nFC70.01uFC50.047uFC7747uF 16VC7047uF 16VNCD81N4148NCNCNCNCNCNCNCNCNCNCNCNCNCNCC121uF 16VR1610K12345CN8DRAW DRIVER3110KR3010K+5VQ128050Q78050Q98550Q108550R33470RR3
43、4470RR6714mm link(840c only)+8VR2810KR2910K+5V+5VNCNCNCNCNCNCNCNCNCNCNCNCNCNCNCNCNCNCNCNCNCNCNCNCNCNCNCNCC86100nFL3100uHR2610KR251KR2310KR2410KR324K7REMOTEREMOTELK1LINKOPEN = F/LSHORT = T/L+5VCCNCNCNCNCNCNCNCNCNCNCNCNCNCNC12345CN12AUDIO OUT no stuff12345CN2DATA OUTEMPHBCKPCMDLRCKGND12CN17XTALIOSCGND
44、SET LCD CONTRAST+5VRESETBOOTGNDWAITSCK2SI2SO2REMOTE+5VGNDK1K2C210.0047uFOLTGNDCLTOPENCLOSEGNDROUTLOUTMUTE1MUTE+5VGNDD-OUTFC-TR-TR+FC+PDVRLDGNDFCBADEVCCVCSLT-SLT+FM+FM-DM-DM+SEG18SEG17SEG16SEG15SEG14SEG13SEG12SEG11SEG10SEG9SEG8SEG7SEG6SEG5SEG4SEG3SEG2SEG1SEG0COM0COM1COM2COM3L4100uHL5100uHC8210uF 16V1
45、2CN18XTALOGNDC871nF12CN20MUTE1234567CN7CONTROL KEYSD101N4148D111N4148R764K7Q88050Q118050PWR DETRESETJ1100RNOTE R? IS A REPLACEMENT FOR WIRE LINK ON BOARD AP12928/7 AND WILL NEED ASSIGNING A REFDES FUTURER? IS 100 OHM 1% METAL FILM RESISTOR. PLACED BETWEEN C68 AND L2FU1T2ALVI1VO3GND2U87805C45100nFC44
46、100nFC46470uF 16V+5V12CN19AC IND5IN4004D4IN4004D2IN4004D3IN4004C49100nFC503300uF 25VC54100nFVI1VO3GND2U77808C48100nFC53100nFC51100nFC52100nFC47470uF 16V+8V14.5VAC12CN21FP DISNOFIT FOR740/840CC8910N COG CERC9010N COG CERC91100N COGC1147N COGC19100N COGC13100N COGC9610N COGC9710N COGC92100N COGR77200R
47、R78200R1P1CN PAD EMC M31P2CN PAD EMC M31P3CN PAD EMC M31P4CN PAD EMC M3R91200RR92200R123CN22HEADER 3WAYP1C9310N COGVCC8CLK5N/C1GND4X3OSC DIL08C94C 100N 100V MCER5V OSCOSC MODOSC MOD5V OSCC98100N COGC101100N COGC102220U 16VR9347RLK2LK7,5MM 24AWG24 AWGLK3(NF)TOSIGNALGROUNDLK4TOLK4To enhance viewing, p
48、lease print to A310Cambridge Audio Azur 740C CD PlayerAP20195/5 Servo Board Layout (Top Side)To enhance viewing, please print to A311Cambridge Audio Azur 740C CD PlayerAP20195/5 Servo Board Layout (Bottom Side)To enhance viewing, please print to A312AP20713/2AP Part No.ValueDescription/TypeQtyCompon
49、ent IdentFactory PNNOTES10R0.25 W Metal Film Resistor1R401011-000014-00015R0.125 W Metal Film Resistor1R62link14mm link1R67For 840C ONLY. Use link47R0.125 W Metal Film Resistor1R10,1014-700018-000100R0.125 W Metal Film Resistor1wirelink ( J1 )1011-001016-000Wirelink is positioned between C68 and L1.
50、 This must be 100R resistor.220R0.125 W Metal Film Resistor1R4,R77,R78,R91,R92 1012-201018-000470R0.125 W Metal Film Resistor2R33, 341014-701016-0001K0.125 W Metal Film Resistor5R3, 20, 25, 601011-002018-0002K20.125 W Metal Film Resistor2R1, 66 1012-202016-0003K30.125 W Metal Film Resistor7R19, 41,
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