Technics-SL1200_MK2-tt-sm 维修电路原理图.pdf

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1、ServiceManualTurntableSystemSPECIFICATIONSGeneralPowersupply:Powerconsumption:Dimensions:(WxHxD)Weight:TurntablesectionType:Drivemethod:Motor:Turntableplatter:Turntable speeds:Pitch control:;:cartingtorque:Build-upcharacteristics:Brakingsystem:Speedchangeduetoloadtorque:Wowandflutter:*Thisratingrefe

2、rsto turntableassemblyalone,excludingeffectsofrecord,cartridgeortonarm,butincludingplatter.Measured byobtainingsignalfrombuilt-infre-quencygeneratorofmotorassembly.Specifications subject tochangewithoutnotice.PanasonicCompanyDivisionofMatsushitaElectricCorporationofAmericaOnePanasonicWay,Secaucus,Ne

3、wJersey07094Thisserviceliteratureisdesignedforexperiencedrepairtechniciansonlyandisnotdesignedforusebythegeneralpublic.Itdoesnotcontainwarningsorcau:.onstoadvisenon-technicalindividualsofpotentialdangersinattemptingtoserviceaproduct.Productspoweredbyelectricityshouldbeservicedorrepairedonlybyexperie

4、ncedprofessionaltechnicians.C.iyattempttoserviceorrepairtheproductor,productsdealtwithinthisserviceliteraturet;+anyoneelsecouldrestin. .seriousinjuryordeath.SL-12PanasonicHawaii,Inc.320WaiakamiloRoad,Honolulu,.Hawaii96817AWARNINGORDERNO.SD7908-1601OMK2(M),(MC)ThemodelSL-11200MK2(M)isavailableinU.S.A

5、.only.*ThemodelSL-1200MK2(MC)isavailableinCanadaonly.Weightanddimensionsshownareapproximate.CudMatsushitaElectricIndustrialCo.Ltd.Allrightsreserved.UnauthenzedcopyinganddistributionisaviolationoflawMatsushitaElectricofCanadaLtd.5770AmblerDrive,Mississauga,OntarioLAW2T3Armheightadjustmentrange:31.8-3

6、7.8mm(helicoidpart6mm)(1-21/32-3-35/64)Quartzdirectdrive(helicoidpart15/64)ManualturntableOverhang:15mm(19/32)DirectdriveEffectivemass:12 g(withoutcartridge)BrushlessDCmotorOffset angle:22AluminumdiecastFriction:Lessthan7mg(lateral,vertical)Diameter33.2cm(13-5/64)Trackingerror angle:Within232(attheo

7、utergrooveofWeight2 kg(4.4 lb.)30cm(12) record33-1/3rpmand45rpmWithin032(attheinnergrooveofAllquartz-locked8%range30cm(12) record1.5kg-cm(1.3Ib-in)Styluspressureadjustmentrange:0-2.5g0.7 s.fromstandstillto33-1/3rpmApplicablecartridge6-10gElectronicbrakeweightrange:13.5-17.5g(includingheadshell)(with

8、auxiliary9.5-13g0%within1.0kg-cm(0.87Ib-in)weight):17-20.5g(includingheadshell)0.01%WRMS*(withshellweight):3.5-6.5g0.025%WRMS(JISC5521)11-14g(includingheadshell)0.035%peak(IEC98AWeighted)Headshellweight:7.5gRumble:-56dB(IEC98AUnweighted)120V,AC,50or60Hz-78dB(IEC98AWeighted)12W45.3x16.2x36cmTonearmse

9、ction(17-27/32x6-19/64xl4-11/64)Type:Universal11kg (24.3lb)Effectivelength:230mm(9-1/16)RadioFans.CN 收音机爱 好者资料库SL-1200MK2CONTENTSDISASSEMBLYPROCEDURE. . . . . . . . .2,3PARTSIDENTIFICATIONS. . . . . . . . . . .?3ARMBASEASSEMBLINGPROCEDURE. . . . .?4FEATURES. . . . . . . . . . . . . .5ADJUSTMENTS. .

10、. . . . . . . . . . .?6SCHEMATICDIAGRAM. . . . . . . . .7,8REPLACEMENTPARTSLIST(Electrical). . . . .?9TROUBLESHOOTING. . . . . . . . . . .?10DISASSEMBLYPROCEDUREHowtoremovepanelcover1.Removeheadshellandturntable.2.Securearmwitharmclamp.3.Remove5screwsOofthepanel coverasshowninFig. 1.Howtoremovestate

11、rframecoilandF.Gdetectorcoil4.Remove3connectorsOand2readwiresfrompowertransformerasshowninFig.2.5.Remove3screwsofthedrivecircuitboardand3screwsofthestaterframecoverasshowninFig.2.6.Disconnect18solderedpartsOofthestatercoiland4solderedpartsOoftheF.G detectorcoil asshowinFig.3.7.Remove3screwsQofthesta

12、terframeassyasshowninFig.3.Howtoremovebottombaseassy8.Remove4audioinsulators.(Counterclockwiserotation)9.Remove17screwsandspacerQasshowinFig.4.10.Remove11screwsOasshowninFig.4.Howtoremovestylus-illuminatorlamp11.Remove2screwsQofthestylus-illuminatorlampassyasshowninFig.5.12.Remove1screwOasshowninFig

13、.6.Howtoremoveneon-illuminatorL.E.D.13.Remove4screwsQasshowninFig.5.14.Remove1circlipQandswitchcamQQasshowninFig.5.15.Removestrobo-illuminatorcase.Howtoremovetonearm16.Remove4screwsQofthearmbasecoverasshowninFig.5.17.Remove2screwsofthephonocordclamperasshowninFig.5.18.Removephonocordclamperasshownin

14、Fig.7.19.Remove2screwsQofthephonocordp.c.b.asshowninFig.8.20.Remove2screwsasshowninFig.8.21.Remove2screwsQofthesiliconoildumperasshowninFig.8.22.Remove3screwsQasshowninFig.8.23.Remove2screws0ofthetonearmasshowninFig.9.PRINTEDCIRCUITBOARD. . . . . . . . .11,12ADJUSTMENT(Electrical). . . . . . . . .13

15、REFERENCEVOLTAGEANDWAVEFORMATEACHICPIN. . . . . . . . . . . . . . . .13,14BLOCKDIAGRAM. . . . . . . . . . .15,16EXPLODEDVIEWS. . . . . . . . . . . . .17,18REPLACEMENTPARTSLIST(Mechanical). . . . .?19EXPLODEDVIEWS. . . . . . . . . .?20RadioFans.CN 收音机爱 好者资料库HingePowerswitchStrobe-illuminator/pilotlam

16、pLampcasetSpeedselectbuttonsmPARTSIDENTIFICATIONFig.Arm-heightadjustmentringBalanceweightFig.10Fig.910.ARMBASEASSEMBLINGPROCEDURE41.Attachthecontrolringto thearmbaseseat.(Thecontrolringshouldberoatedcounterclockwise.)2.Completelytightenthecontrolring,andthenloosenit1.5-2 .5turns tosetthescaleto3.(Se

17、e Fig.11)3.Holdthearmbaseandsettheredlinemark onthearmbasetothescalenear2, thenturn thearmbaseclockwise.(See Fig.12)Note:Takecarenotto allowdeflectionof thepredeterminedpositionsofthecontrolringandarmbaseseat.Fig.124.Adjustthearmbasesothat theredlinemarkonthearmbaseissettothescale3of thecontrolring.

18、Next,securethepositioningbaseplatewithtwosetscrews.(SeeFig.13)5.Rotatethe controlringandmakesurethat thearmbaseshiftswithintherangeof0-6mm.(See Figs.14and15)Ifitdoesnotshiftwithinthespecifiedrange,thearmbasepositionisdeflected.Inthatcase,disassemblethepartsandcheckasspecifiedinstep 3.ADJUSTSPRINGENT

19、OFCANCELLERPOSITIONIfthearmbodyorPUbaseplateisreplaced,besure tosetthecancellerknobto0.5andmakesure that the can-cellerspringisincontactwiththearmshaft.(See Fig.16)ifthecancellerspringisdeflected,adjustitasfollows:1.Clampthearmontherest.2.Setthecancellerknobto0.5.3.RemovethePUbaseplate,adjust gearQs

20、o that thecancellerspringisinthepositionofFig.16.4.MountthePUbaseplateontothearmbaseandcitckthespringposition.FEATURESTotalquartz lockedcontinuouspitchadjustmentf8%Quartz-phase-lockedcontrolmeansalmostperfectaccuracyofturntablerotation.Butwithmostquartzturntables,thisaccuratecontrolcircuitmustbecuto

21、utwhenthepitchcontrolisemployed.WiththeSL-1200MK2,however,pitchisvariablecon-tinuously(analogically)byupto8%undertotalquartz-lockedcontrol.Thepitchiscontrolledwithalargeslidinglever,locatedtotherightoftheturntableplatter.Fourlinesofplattermarkingsarealsoprovidedindicating+6%,+3.3%,0%(exactratedspeed

22、)and-3.3%changefromratedspeed.AluminumdiecastcabinetandspecialheavyrubberbasematerialprovideacousticisolationTheeffectsof externalvibrationsaredramaticallyreducedinthe turntablebythisnewturntable construction.Theturntablebaseisprecision-madealuminumdiecast.Andtheundersideofthemainbaseismadeofaheavyr

23、ubbermaterial(specialone-piecemolding)whichhasexcellentvibrationresistanceandabsorbingcharacteristics.Theturntableplatterisalsovibration-dampedwithspecial-lyfabricatrubbermattingintheunderside alongwiththethick turntable sheet(rubbermat).Fourlarge-sizeinsulatingfeet alsohelp toabsorbunwantedvibratio

24、ns.These?featuresmakeSL-11200MK2idealforusewithextra-highsoundpressurelevels.HightorqueforfaststartsTheintegralrotor/plattermotordelivers1.5kg-cm(1.3lb-in)startingtorque.Thishightorquegivesveryquickstartsenablingtheplattertoreach33-1/3rpmwithin0.7s.(aquarterofaturn).Thisisabigadvantageinmanyprofes-s

25、ionalapplicationswherefastcueingisanecessity.Stylusilluminatorforlow-lightconditionsYoullappreciatethestylusilluminatorwhenyouareusingtheturntableunderlow-lightconditions.Theilluminatorcanbehiddenintheturntablebase,shouldyouneedit,simplypushabuttonanditwillpopupgentlyandcastabeamoflightacrossthedisc

26、intheareatraversedbythetonearm.SL-1200MK2Youcanthenclearlyseethe spacesbetweentheselectionson therecord,andcue thearmexactlywhereyouwantit.Theilluminatorcanthenbe pushed backdownintothebase.Highsensitivity,lowmass,gimbalsuspensiontonearmThehighlysensitivetonearmfeaturesagenuinegimbalsuspension,thero

27、tationalcenterofwhichispreciselydefinedatonepoint.Bearingsarefinishedtoatoleranceof0.5microns.Thisandtheextra-closeness ofpivotcentertothebearings,resultintheminimalfrictionof7mg(0.007g)forbothhorizontalandverticalmovement.Addtothisthelow 12-grameffectivetonearmmass(includingheadshell,withoutcartrid

28、ge)andyouhaveatonearmcom-patiblewiththewiderangeofcompliancesfoundintodayscartridges.Ifyouchoose apopularhighcomplianceMMcartridge,thelowrangeresonancefrequencywillappearinthecorrectarea toavoidwarpfrequenciesofrecords,butwithoutenteringthelowendoftheaudio spectrum.Thistonearmisprovided withacompute

29、rdesigned,light-weight,high-rigidityheadshellmadeofsingle-piece diecastaluminumtoresistpartialvibration.Theuniversaldesign allowshead-shellinterchangeability.Contactsaregold-plated.HelicoidtonearmheightadjustmentArmheightisadjustablewithinarangeof6mmtoaccom-modatevaryingcartridgedimensions.Adjustmen

30、tsaredonewithaprecision-madehelicoid.Otherfine featuresQuickstopsareachievedwithafullyelectronicbrakingsystem.Astrobeilluminatorisprovided.Thestroboscopeiscon-trolledbytheextremelystablequartzoscillator,ratherthanpotentiallyunstableAClinefrequency.Poweron/offcontrolbuilt-intostrobeilluminatorforease

31、-of-operation.Soft-touchstart-stopswitchallowingprecisioncontrolcapabilitywithouttheannoyanceofaccidentaloperation.Technicsintegralrotor/plattermotorconstructionwithfullcycledetectionFG.)MK2SL-1200MK2:ig.17ADJUSTMENTS(t)appearsstahonaryatthepitchof,611,(2)appearsstahonaryatthepitchof3.3%f3fappearssl

32、at,onaryatthepitcho;11(4)appearsstahonaryatthepitcho33%Fig.19Adjustmentof thetonearmheight(SeeFig.22.)Theheight of thetonearmcanbeadjustedupto6mm,andascaleisprovidedonthe adjustringin0.5mmincrements.Besure tosettheproperarmheight using theadjustringscaleandreferringtothetable.Forexample,ifthecartrid

33、geheightis17.5mm,thearm-heightadjustringshouldbepositionedattheintermediatelocationbetween2and3onthescale.(SeeFig.22.)Caution:Besure tolockthetonearmbyturningthearmlockknobinthedirectionindicatedbythearrowafterfinishingtheheightadjustmentfor thetonearm.Lubrication(SeeFig.23.)Apply2 or3dropsofoilonce

34、afterevery2000hoursofoperation.Thetimeintervalismuchlongerthanthatforconventionaltype motors(200-500hours).Pleasepurchaseoriginaloil.(PartnumberisSFWO010.)Heightofcartridge(mm)(H)Scale readingonthearm-heightadjustring15016117218319420521lectionsPitchcontrol(fineadjustmentofspeed)(SeeFigs.wantit.18an

35、d19.)ntotheWhenthepitchcontrolknobislocatedatthecenter of thepositionafterturningonthe power,the greenLEDindicatorislitshowingtheoperatingconditionforthepredeterminedensionspeed(either33-1/3or45rpm).Thepitchcontrolisvariablein arange of0-8%.gimbalAdjustmentshouldbedoneonthebasisofindicatorscale.reci

36、selyFiguresontheindicatorshowapproximatepercentagesforofvariablepitch control.-ancetcenterWhenthe strobe dotsin4stagesmarkedat theperipheralf7edgeof the turntableappeartobestationary,variationofmgnt.Addindividualpitchesisshown.(SeeFig.19.)icludingNote:mcom-Thestrobe-illumination ofthisunitemploysast

37、robe-illu-todaysminatorLEDsynchronizedwiththeprecisequartzfre-iceMMquency.)pearinForfineadjustmentoftheturntablespeed, be sure toAs,buteffecttheadjustmentaccordingtotheLEDillumination.m.ThisTheLEDilluminationisnot synchronizedwithfluorescentweight,lamps.iminumAdjustmentofarm-liftheight(SeeFigs.20and

38、21.)vshead-Thearm-liftheight(distancebetweenthestylus tipandrecordsurfacewhencueingleverisraised)hasbeenadjustedatthefactorybeforeshippingtoapproximatelyaccom-8-13mm.redoneIfthe clearancebecomestoonarrowortoowide,turntheadjustmentscrewclockwiseorcounterclockwise,whilepushingthearmliftdown.Clockwiser

39、otationbraking-distancebetweentherecordandstylustipisdecreased.Counterclockwiserotationiscon-distancebetweentherecordandstylustipisincreased.,ratherNote:itorforAsthe adjustingscrewhashexagonalhead,be sure tomaketheadjustmentwhiledepressingthearmlift,orthescrewcontrolwillnotmovefreely.eration.Alsobes

40、ure that thehexagonalheadretractscorrectlyinto)nwiththearmliftwhenthelatterisreleased.SchematicDiagram?(Thisschematicdiagrammaybemodifiedatanytimewiththedevelopmentof2?3?4?5?6?7VR20150KBR2154.7KR21422K520133IC201TP4AN6680Q120.6R54D2SVORD5.1EQ202R2042.TP22TFAC117V(50/60Hz)VR303IMPORTANTSAFETYNOTICEPO

41、WERSWITCHpnai?ORGT.IYtiO-iFr1?R601350MA?4.7BLUD204MA1505203S/SD1SVDSlRBA2015202THESHADEDAREAONTHISSCHEMATICDIAGRAMINCORPORATESSPECIALFEATURESIMPORTANTFORSAFETY.WHENSERVICINGIT ISESSENTIALTHATONLYMANUFACTURERSPECIFIEDPARTSBEUSEDFORTHECRITICALCOMPONENTSINTHESHADEDAREASOFTHESCHEMATIC.uTP21Q3D201,202SVD

42、SR105CJCCR20545PITCHLOCK SWITCH?SPEEDSELECTORSWITCHPITCHCONTROLVOLUME?STR(ABCBrakingDadjustmentEAdjustmentofFpitch control0%(Pitch)PitchAdjustment(GAIN)GH,developmentofnewtechnology.)78fP3220P19.213IlopiOVIWITCHD206STROBEILLUMINATORPLl5401D204D205STYLUS-ILLUMINATOR9NOTO:10S601:PowerswitchinONpositio

43、n.ThedrivecircuitICvoltageandwaveformarenotindicatedinsidetheschematicdiagram.Indicatedvoltagevaluesare thestandardvaluesfortheunitmeasured byDCelectroniccircuittester(highimpedance)withthechassistakenasstandard.Therefore, theremayexistsomeerrorsinthevoltagevalues,depending ontheinternalim-pedanceof

44、theDCcircuittester.1.S201:Speedselectorswitch(33-1/3r.p.m.)in6.ONposition.(push condition)7.2.S202:Speedselectorswitch (45r.p.m.)inOFFposition.(not-pushcondition)8.3.S203:Start/StopswitchinOFFposition.(not-pushcondition)4.S301:PitchlockswitchinONposition.(centerposition)5.S401:Stylus-illuminatorswit

45、chinOFFposition.REPLACEMENTPARTSLIST(Electrical)Notes:?1.Partnumbersareindicatedonmostmechanicalparts.Pleaseusethispartnumberforpartsorders.2.indicatesthatonlypartsspecifiedbymanufacturerbeusedforsafety.3.SL-1200MK2(M)+MI,SL-1200MK2(MC)+(MC10TERMINALGUIDE OF TRANSISTORANDICRef.No.PartNo.PartName&Des

46、criptionRef,No.PartNo.PartName&DescriptionINTEGRATEDCIRCUITS8108ERD25FJ103Carbon,10kn,1/4W,t5%IC101AN6675IntegratedCircuit8109,110AERXIANJ4R7Metal Film,4.7fl,1W,t 5%IC201AN6680IntegratedCircuitR201ERGlANJ561Metal Oxide,560fl,1W,t 5%IC301AN6682IntegratedCircuitR202EAD25FJ103Carbon,1Okfl,1/4W,t 5%IC30

47、2SVITC4011BPIntegratedCircuit8203ERD25FJ470Carbon,47fl,1/4W,t 5%R204ERD25FJ272Carbon,2.7kfl,1/4W,t 5%8205-ERD25TJ124Carbon,120kfl,1/4W,t 5%TRANSISTORSR206ERD25TJ183Carbon,18kf1,1/4W,t5%8207ERD25TJ563Carbon,56kfl,1/4W,t 5%Q12SD389A-QTransistorR208ERD25TJ224Carbon,220kfl,1/4W,t 5%Q2,3,2022SD637Transis

48、torQ2012SC1846-RTransistorR209ER025TJ154Carbon,150kfl,1/4W,t 5%Q2032SC1328-TTransistorR210ERD25TJ183Carbon,18kf2,1/4W,t 5%R211ERD25FJ103Carbon,1OkQ,1/4W,t 5%R212ERD25FJ121Carbon,120fl,1/4W,t 5%DIODESR213ERD25FJ122Carbon,1.2kfl,1/4W,t 5%D1ASVDSIRBA40Rectifier8214ERD25TJ223Carbon,22kfl,1/4W,t 5%D2,301

49、MA7051Diode,Zener5.iVR215ERD25FJ472Carbon,4.7kfl,1/4W,t 5%D204MA162ADiodeR216ERD25TJ154Carbon,150kfl,1/4W,t 5%D201,202SVDSR-105CLightEmittingDiode8217ERD25TJ223Carbon,22kf1,1/4W,t5%D203-206SVDEBR5505SLightEmittingDiodeR218ERD25FJ102Carbon,lkfl,1/4W,t 5%D401SVDGL-9PG2LightEmittingDiodeR219ERD25FJ332C

50、arbon,3.3kf2,1/4W,t5%R220ERD25FJ221Carbon,22012,1/4W,t 5%CRYSTALR2218301ERD25FJ471ER025CKF3301Carbon,47012,1/4W,t 5%X201SVQU306115Crystal,4.19328MHzOscillatorR302ERD25FJ471MetalFilm,3.3kfl,1/4W,t1%Carbon,470(2,1/4W,t 5%R303ERD25FJ822Carbon,8.2kf2,1/4W,t 5%VARIABLERESISTORSR304ERD25FJ152Carbon,1.5kfl