Cambridge-L990CT-int-sch维修电路原理图.pdf

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1、12345678ABCD87654321DCBAISSUEDRAWING NO.?DRAWING TITLEDrawn by:DATEFilenameECO No.DESCRIPTION OF CHANGEL990_TOP.PRJA & R Cambridge Ltd.Pembroke AvenueDenny Industrial CentreWaterbeachCambridge CB5 9QRA90 Amplifier and PSU update - Top SheetCircuit DiagramL990_TOPJ Roscoe17-Aug-2005INITIALSDate Print

2、ed14SheetofNotes: Top+ Top-SK100ACAMCON_G Bot+ Bot-SK100BCAMCON_G Top+ Top-SK101ACAMCON_G Bot+ Bot-SK101BCAMCON_GD1001N4003FD1011N4003FEMC1NFSK104APHONO4GNFSK104BPHONO4G0V_SIG0V_SIG0V_SIG123SW100A2PCO456SW100B2PCOC1001N0 SM1234SK102AMPCT4STANDBYSPKR1 ONSPKR2 ONTHERMPROTVIPROTDCPROTAC PRESENTL SIGR S

3、IGSPKR1 ONSPKR2 ONTHERMPROTVIPROTAC PRESENTDCPROTLS LLS RL SIG0V_SIG0V_LS_L0V_HF_L+49V-49V+5V_D+49V-49V0V_D0V_PSUR SIG0V_SIG0V_LS_R0V_HF_R+49V-49V0V_TRIGLS L0V_LS_L0V_LS_RLS R+49V0V_DVIPROT_LDCPROT_LDCPROT_LVIPROT_RDCPROT_RDCPROT_RVIPROT_LVIPROT_RSTANDBY+49V+5V_D0V_D0V_PSU0V_LS_R0V_HF_R0V_LS_L0V_HF_

4、L0V_D0V_TRIG0V_SIGR103470R 1W CFR104470R 1W CFR10533R 1W CFR10633R 1W CFLHC2RHC314L56R7SK105HPSKTLS LLS R0V_LS_LREMOTEREMOTEFROM PREAMPINTEGRATED / PRE-POWERMODE SELECT SWITCHTRIGGERTRIGGERTP102TP101TP100TP103TP104TP105TP106TP107TP108TP109TP110TP117TP111TP113TP115TP112TP114TP1160V_D+5V(D)VPOSVNEG0V_

5、PSUPWRONTHPROT_uCVIPROT_LVIPROT_RVIPROT_uCAC_PRES0V_TRIGDCPROT_LDCPROT_RDCPROT_uCRC5 INTRG INL990_MICROL990_MICRO.SCHINPUT0V_SIGVIPROTDCPROTOUTPUT0V_LS0V_HFVPOSVNEGL990_PA_LL990_PA_L.SCHINPUT0V_SIGVIPROTDCPROTOUTPUT0V_LS0V_HFVPOSVNEG0V_FB_RL990_PA_RL990_PA_R.SCHTR100BD179TR101BD179R101100R SMR102100

6、R SMR107220R SMR108220R SMPCBPCBL990PB_1TP118TP119TP120TP1211234567891011121314SK103FFC 14W 2.54MM VEREARTH LEAD8M101ELEARTH LEAD12PL10012PL101R10010R MF05_E103JAR19/05/05A.0SEE ECO 02_E313FIT SK103 ON PCB TO LINE UP WITH SILK SCREENON SIDE OF C209ON SIDE OF C210ON SIDE OF RLY100ON SIDE OF RLY10115m

7、m x 6mm x 3mmDAMPING PADE802APDP10015X6X3_DAMPING_PAD15mm x 6mm x 3mmDAMPING PADE802APDP10115X6X3_DAMPING_PAD15mm x 6mm x 3mmDAMPING PADE802APDP10215X6X3_DAMPING_PAD15mm x 6mm x 3mmDAMPING PADE802APDP10315X6X3_DAMPING_PAD0V_TRIGR1090R0 SMRLY101ARLY G5PA-2 24V A209RLY101BRLY G5PA-2 24V A209RLY100BRLY

8、 G5PA-2 24V A209RLY100ARLY G5PA-2 24V A20912RLY100CRLY G5PA-2 24V A209RLY101CRLY G5PA-2 24V A2090V_FB_RRLY102ARLY DPDT 5V SM A216RLY102B+-RLY102CRLY DPDT 5V SM A216AC PRESENTQ100BC849BR110470R SM0V_D+5V_DD102BAS16W SMR111470R 1W CFR112470R 1W CFHEADPHONE SNAP OFFTO H/PHONEFIX100FIXING HOLE 3.2R11310

9、0R 1W CFR114470R SM12345SK106AMPCT512345SK107AMPCT50V_DSP100STAR_8Q101BC849BBOARDR1154K7 SMSTANDBYThis line is active HighRelay RLY102 is on (allowing signal to headphones)only when ACpresent is low & notSTANDBY is high.notSTANDBY is the same as PWRONnotSTANDBYReplace obsolete relays + circuit impro

10、vementsWas L882AY issue 4.005_E165AJD15/08/051.0Fix Ground on trigger and add Diode to trigg out release issue05_E165AJD15/08/051.1Fix Headphone mute circuit.RadioFans.CN 收音机爱 好者资料库12345678ABCD87654321DCBAISSUEDRAWING NO.?DRAWING TITLEDrawn by:DATEFilenameECO No.DESCRIPTION OF CHANGEL990_MICRO.SCHA

11、& R Cambridge Ltd.Pembroke AvenueDenny Industrial CentreWaterbeachCambridge CB5 9QRA90 Amplifier & PSU update - Microcontroller InterfaceCircuit DiagramL990_MISCJ Roscoe17-Aug-2005INITIALSDate Printed24SheetofNotes:LNENELSK203IEC3 NO RIVETSBC200TOOLING4.11GREENSK202CAGECLAMP1C2053N3 MAINSC2063N3 MAI

12、NSFar from PCBSK201BJACK3.5X2GNDNSWNSIGNNear to PCBSK201AJACK3.5X2SW200BVOL SEL SLIDESW200AVOL SEL SLIDEC2083N3 MAINSC2073N3 MAINSVinIGNDGVoutOIC201L4940V5D2031N4003FD2011N4003FD2021N4003FD2001N4003FC225100N CDC226100N CD+12-43BR200BRGBU8DLIVENEUTRALEARTHEMC ShieldSH200EMCMAINSNEUTRALLIVELIVENEUTRAL

13、0V_D+5V(D)0V_D0V_PSUVPOSVNEG0V_PSU+49V+5V_D0V_DPWRON-49V+5V_DTH200PTH90DEG+5V_D0V_DTHPROT_uCVIPROT_LVIPROT_R+5V_D0V_DVIPROT_uC0V_D9VRMS+5V_D0V_D9VRMS+C22922U ELAC_PRES+C2273300u 25V+C2281000u 10V23467815SK204MOLEXPWR8123456SK200MOLEXPWR6D206BAS16W SMTR204BC849BR21110K SMR22010R SMR2001K0 SMTR202FMMT

14、597D205BAS16W SMC21310N SMTR203FMMT497DZ20715V 350MW SM+C22310U EL+C22210U ELR21010K SM+49V0V_TRIG0V_TRIG12IC202A74HC14D34IC202B74HC14D1011IC202E74HC14D1213IC202F74HC14DC21410N SMC21510N SMR2134K7 SMR2144K7 SMTR205BC856BR2061K0 SMC21810N SMC203100N SMDCPROT_LDCPROT_R+5V_D0V_DDCPROT_uC0V_D56IC202C74H

15、C14D89IC202D74HC14DC21610N SMC21710N SMR2154K7 SMR2164K7 SMTR206BC856BR2071K0 SMC220100N SMC204100N SM147IC202G74HC14DC201100N SMC202100N SMR2051K0 SMR22110R SMC224100N CDR2191K8 SMR2124K7 SMTR201FMMT497TRIGGER OUTPUTAPPROX 13.5VDC60mA MAX CURRENTR2011K0 SMR2021K0 SMR2031K0 SMR2041K0 SMC21910N SMC22

16、110N SMMAINS WIRING AND AUXILIARY SUPPLYPOWER AMP SUPPLYMICROPROCESSOR SIGNALS INTERFACEHSHS200TO220HS08REG123456SK205AMPCT6RLY200ADPDT5VRLY200BDPDT5VRLY200CDPDT5VTR200BD179R21710R SMR21810K SMSTANDBY RELAY CONTROL0V_TRIGRC5 INMODULATED RC5REMOTE CONTROL INPUTTP206TP200TP207TP203TP201TP202TP210TP204

17、TP205TP208TP209TP211TP212+C20910,000u 63V+C21010,000u 63V CHASSSK101CCAMCON_GC2351N0 SMC234220N X2 CLASSF202T750mA SMF200T4AF201T4ANFC211100N PEC212100N PER2271K0 SMDZ2044V7 350MW SMTRG INR226470R SMC200100N SMC232100N SMC230100N SMC231100N SM115V115V6421 0V589V0V9V370V6VATX200TX 6VA 9311C237100N SM

18、C238100N SMC236100N SMC233100N SML20027mHC241680P PP321IC200ALM393A SMR22310K SMR229100K SMR20910K SMR2241K8 SMR2301K5 SM567IC200BLM393A SM84IC200CLM393A SMR2251K8 SMC2421N0 SMR20810K SMC239100N SM+5V_DCARRIER FILTER AND DEMODULATORC24010N SM+C24310U ELR22210K SMR2280R0 SMR2320R0 SM05_E103JAR19/05/0

19、5A.0Replace obsolete relays + circuit improvementsWas L882AY issue 4.00V_TRIGNot FittedD2041N4003F05_E165AJD15/08/051.0Fix Ground on trigger and add Diode to trigg out release issueR2311M5 VR37RadioFans.CN 收音机爱 好者资料库12345678ABCD87654321DCBAISSUEDRAWING NO.?DRAWING TITLEDrawn by:DATEFilenameECO No.DE

20、SCRIPTION OF CHANGEL990_PA_L.SCHA & R Cambridge Ltd.Pembroke AvenueDenny Industrial CentreWaterbeachCambridge CB5 9QRA90 Amplifier update - Power Output Stage LeftCircuit DiagramL990_PA_LJ Roscoe17-Aug-2005INITIALSDate Printed34SheetofNotes:R3241K0 SMTR300FMMT597TR301FMMT597R315100R SMR316100R SMR31

21、9100R SMTR314FMMT497TR315FMMT497R317100R SMR318100R SMR320100R SMR32222R SMC317470N PE0V_SIG0V_SIGINPUT0V_SIGR3505R6 2W CFC319100N PE0V_HF0V_LSC313100N SMR341390R SMR342390R SMR343100R SMR344100R SMR345220R SMR346220R SMR33410K SMR33610K SMD301BAS16W SMD302BAS16W SMTR312FMMT497TR304FMMT597TR313FMMT4

22、97TR302FMMT597DZ3054V7 350MW SM0V_HFVIPROTC320100U NPTR305FMMT597DZ3064V7 350MW SM0V_HFDCPROTOUTPUT0V_LS0V_HFVPOSVNEG0V_HF0V_HFDZ30015V 350MW SMDZ30115V 350MW SMC309100N SMC310100N SMC314100N SM0V_SIG0V_SIGD3041N4003FD3031N4003FR30210K SMR32722K SMRV300100R PSETC31210N SM12PL300BIASR3251K0 SMR3261K0

23、 SMADJ BIASD300BAS16W SMR30010K SMR30910K SMR30510K SMR30610K SM+C30510U ELMEASURETR318SAP15NTR319SAP15PR30110K SMC315100N SMR347100R SMR349100R SMR348100R SMR340100K SMDZ3024V7 350MW SMDZ3034V7 350MW SM32184IC300ATL072CD567IC300BTL072CDR3284K7 SM0V_HF0V_SIGTR311FMMT497TR303FMMT597TR310FMMT497TR307F

24、MMT597C307100P SMC308100P SMINPUT FILTERV TO I AMPDC SERVOPNP CURRENT MIRRORNPN CURRENT MIRRORPRE DRIVERPRE DRIVEROUTPUT STAGEOUTPUT STAGEV-I PROTECTIONV-I PROTECTIONVI PROTECTSIGNAL TO MICRODC OFFSETDETECTIONDC OFFSET SIGNALTO MICROZOBEL NETWORKTR316FMMT497TR308FMMT597TR317FMMT497R31110K SMR31210K

25、SMR31310K SMR30310K SMR30410K SMR30710K SMR3104K7 SMR3294K7 SM+C300100U EL+C301100U ELR338150R SMR339150R SMR30822K SMR31410K SMTR309FMMT497TR306FMMT597R32333R SMR32133R SMTP302TP303TP304TP307TP308TP305TP306R33722R SMR331820R SMR332820RSMR3301M0 SMR3333K3 SMR3353K3 SML3002U2H LAC SMALLR3515R6 2W CF+

26、C31810U ELTR321FMMT597TR320FMMT497+C302100U EL 100V+C306100U EL 100VR352470R 2W MF 5% R353470R 2W MF 5%BOOTSTRAPBOOTSTRAP(SET TO 16mV)+C303100U EL+C304100U ELTR322FMMT497R3541K0 SMR3556K2 SMC311100N PEC316470P FKP2 100VC321100N SMR3570R0 SM0V_SIGR356220K SM0V_SIGD30522V 350MW SMD30622V 350MW SMR3581

27、K0 SMR3591K0 SMR360820R SMR361820R SM05_E103JAR19/05/05A.0Replace obsolete relays + circuit improvementsWas L882AY issue 4.005_E165AJD15/08/051.0Fix Ground on trigger and add Diode to trigg out release issue12345678ABCD87654321DCBAISSUEDRAWING NO.?DRAWING TITLEDrawn by:DATEFilenameECO No.DESCRIPTION

28、 OF CHANGEL990_PA_R.SCHA & R Cambridge Ltd.Pembroke AvenueDenny Industrial CentreWaterbeachCambridge CB5 9QRA90 Amplifier update - Power Output Stage RightCircuit DiagramL990_PA_RJ Roscoe17-Aug-2005INITIALSDate Printed44SheetofNotes:R4241K0 SMTR400FMMT597TR401FMMT597R415100R SMR416100R SMR419100R SM

29、TR414FMMT497TR415FMMT497R417100R SMR418100R SMR420100R SMR42222R SMR4301M0 SMR431820R SMR432820R SMC417470N PE0V_SIG0V_SIGINPUT0V_SIGR4505R6 2W CFC419100N PE0V_HF0V_LSC413100N SMR441390R SMR442390R SMR443100R SMR444100R SMR445220R SMR446220R SMR43410K SMR43610K SMD401BAS16W SMD402BAS16W SMTR412FMMT4

30、97TR404FMMT597TR413FMMT497TR402FMMT597DZ4054V7 350MW SM0V_HFVIPROTC420100U NPTR405FMMT597DZ4064V7 350MW SM0V_HFDCPROTOUTPUT0V_LS0V_HFVPOSVNEG0V_HF0V_HFDZ40015V 350MW SMDZ40115V 350MW SMC409100N SMC410100N SMC414100N SM0V_SIG0V_SIGD4041N4003FD4031N4003FR40210K SMR42722K SMRV400100R PSETC41210N SM12PL

31、400BIASR4251K0 SMR4261K0 SMADJ BIASD400BAS16W SMR40010K SMR40910K SMR40510K SMR40610K SM+C40510U ELMEASURETR418SAP15NTR419SAP15PR40110K SMC415100N SMR447100R SMR449100R SMR448100R SMR440100K SMDZ4024V7 350MW SMDZ4034V7 350MW SM32184IC400ATL072CD567IC400BTL072CDR4284K7 SM0V_HF0V_SIGTR411FMMT497TR403F

32、MMT597TR410FMMT497TR407FMMT597C407100P SMC408100P SMINPUT FILTERV TO I AMPDC SERVOPNP CURRENT MIRRORNPN CURRENT MIRRORPRE DRIVERPRE DRIVEROUTPUT STAGEOUTPUT STAGEV-I PROTECTIONV-I PROTECTIONVI PROTECTSIGNAL TO MICRODC OFFSETDETECTIONDC OFFSET SIGNALTO MICROZOBEL NETWORKTR416FMMT497TR408FMMT597TR417F

33、MMT497R41110K SMR41210K SMR41310K SMR40310K SMR40410K SMR40710K SMR4104K7 SMR4294K7 SM+C400100U EL+C401100U ELR438150R SMR439150R SMR40822K SMR41410K SMTR409FMMT497TR406FMMT597R42333R SMR42133R SM(SET TO 16 mV)TP402TP403TP404TP405TP406TP407TP408R43722R SMR4333K3 SMR4353K3 SMR4515R6 2W CF+C41810U ELT

34、R421FMMT597TR420FMMT497+C402100U EL 100V+C406100U EL 100VR452470R 2W MF 5%R453470R 2W MF 5%BOOTSTRAPBOOTSTRAP+C403100U EL+C404100U ELL4002U2H LAC SMALLTR422FMMT497R4541K0 SMR4556K2 SMC411100N PEC416470P FKP2 100VC421100N SMR4570R0 SM0V_SIGR456220K SM0V_SIGD40522V 350MW SMD40622V 350MW SMR4581K0 SMR4591K0 SMR460820R SMR461820R SM05_E103JAR19/05/05A.0Replace obsolete relays + circuit improvementsWas L882AY issue 4.005_E165AJD15/08/051.0Fix Ground on trigger and add Diode to trigg out release issue