Aiwa-NSXA959-cs-sm维修电路原理图.pdf
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1、anuaCDSTEREOSYSTEMawaSERVICENSX-A959NSX-F959SYSTEMCD-CASSEIVERSPEAKERNSX-A959(TYPE: U)CX-NA959SX-WNA958NSX-F959(TYPE: LH)CX-NF959SX-WNF959GIfrequiringinformationabouttheCDmechanism,seeServiceManualof6ZG-1,S/MCodeNo.09-984-249-90T.RadioFans.CN 收音机爱 好者资料库TABLEOFCONTENTSPROTECTIONOFEYESFROMLASERBEAMDUR
2、INGSERVICING.3PRECAUTIONTOREPLACEOPTICALBLOCK.3SPECIFICATIONS.4NOTEONBEFORESTARTINGREPAIR. 5ELECTRICALMAINPARTSLIST. 7TRANSISTORILLUSTRATION. 12BLOCKDIAGRAM-1(MAIN/FRONT). 13WIRING-1(MAIN: U. LH) .15SCHEMATICDIAGRAM-1(MAIN:U) . 17SCHEMATICDIAGRAM-2(MAIN: LH). 20SCHEMATICDIAGRAM3(TUNER).s.s. 23IC BLO
3、CKDIAGRAM-1.25SCHEMATICDIAGRAM4(FRONT). 26WIRING-2(FRONT).29SCHEMATICDIAGRAM-5(HIFI-AMP). 31WIRING-3(HIFI-AMP).s.33WIRING4(JOG/RELAY/KEY). 35SCHEMATICDIAGRAM-6(RELAY).n. 37WIRING-5(DECK).38WIRING-6(AC/PT).39ADJUSTMENT1. 40PRACTICALSERVICEFIGURE.s. 42ICDESCRIPTION.43FLGRIDASSIGNMENT&ANODECONNECTION.s
4、. 45MECHANICALEXPLODEDVIEW1 / 1 . 47MECHANICALPARTSLIST1 / 1 . 49TAPEMECHANISMEXPLODEDVIEW1 / 1 . 50TAPEMECHANISMPARTSLIST1 / 1 . 52SPRINGAPPLICATIONPOSITION. 53IC BLOCKDIAGRAM.2.54SPEAKERDISASSEMBLYinstruction. 58SPEAKERPARTSLIST.59ACCESSORIES/ PACKAGELIST. 60REFERENCENAMELIST.612RadioFans.CN 收音机爱
5、好者资料库Thissetemployslaser.Therefore,besuretofollowcarefullytheinstructionsbelowwhenservicing.WARNING!WHENSERVICING,DO NOTAPPROACHTHELASEREXITWITHTHEEYETOOCLOSELY.INCASEITISNECESSARYTOCONFIRMLASERBEAMEMISSION.BESURETOOBSERVEFROMA DISTANCEOFMORETHAN30cmFROMTHESURFACEOFTHEOBJEC-TIVELENSONTHEOPTICALPICK-
6、UPBLOCK.AICaution:Invisiblelaserradiationwhen*openandinterlocksdefeatedavoidexposuretobeam.IAdvarsel:Usynliglaserst2dingvedbning,nrsikkerhedsafbrydereer udeaf funktion.Undg&udsa?ttelseforstr#ding.VAROITUS!LaiteenKayttaminenmuullakuintassakayttoohjeessamainitullatavallasaataaaltistaakayt-tajanturvall
7、isuusluokan1ylittavallenakymattomalleIasersateilylle.VARNING!OmapparatenanvandsPAannatsattanvadsomspecificerasidennabruksanvising,kananvandarenutsattasforosynlingIaserstrAlning,somoverskridergransenforlaserklass1.PrecautiontoreplaceOpticalblock(KSS-213F)Bodyor clotheselectrostaticpotentialcouldruinl
8、aserdiodein theopticalblock.Besuregroundbodyandworkbench,andusetheclothesdonottouchthediode.CAUTIONUseof controlsoradjustmentsorperformanceof proce-duresotherthanthosespecifiedherinmayresultinhazardousradiationexposure.ATTENTIONLutillisationdecommandes,reglagesouproceduresautresqueceuxspecifiespeute
9、ntrakrerunedangereuseexpositionauxradiations.ADVARSELUsynligIaserstAlingvedabning,nrsikkerhedsafbrydereerudeaf funktion.Undg5udsattelseforstr?ding.ThisCompactDiscplayerisclassifiedasaCLASS1LASERproduct.TheCLASS1 LASERPRODUCTlabelis locatedontherearexterior,CLASS1LASERPRODUCTKLASSE1LASERPRODUKTLUOKAN
10、1LASERLAITEKLASS1LASERAPPARATIPICK-UPk.s)IP.C.B.1 )Aftertheconnection,removesoldershowninrightfigure.RadioFans.CN 收音机爱 好者资料库SPECIFICATIONScFMTunersectionTuningrangeUsablesensitivity(lHF)AntennaterminalscMWTunersectionTuningrangeUsablesensitivityAntennacAmplifiersectionMid-highfrequencyamplifierPower
11、outputTotalharmonicdistortion87.5MHzto108MHz13.2dBf75ohms(unbalanced)531kHzto1602kHz(9kHzstep)530kHzto1710kHz(1 O kHzstep)350uV/mLoopantennaU:30W+30W(200Hz-20kHz,T.H.D.lessthan1%,6 ohms)LH:40W+ 40W(1kHz,T. H. D.10%,6 ohms)0.3%(6W,1 kHz,6 ohms,DINAUDIO)Low-highfrequencyamplifierroweroutpuI- . .U:130W
12、+130W(20HZ-200HZ,TotalharmonicdistortionInputsoutputsTrackformatFrequencyresponseSignal-to-noiseratioRecordingsystemHeadsT.H.D.lessthan17.;6 ohms)LH:170W+170W(75tiz,T.H.D.10%,6 ohms)0.3%(13.5W,75Hz,6 ohms,DINAUDIO)VI DEO/AUX:210mV(adjustable)MD:21OmV(adjustable)MlCl,MIC2: 1.4mV(10kohrms)LINEOUT:200m
13、VSPEAKERS:acceptspeakersof6 ohmsormoreSURROUNDSPEAKERS:acceptspeakersof8 ohmsto16ohmsPHONES(stereojack): acceptsheadphonesof32ohmsormore4 tracks,2 channelsstereoCrO,tape:50Hz-16000HzNormaltape:50Hz15000Hz60dB(DoblyB NRON,CrOztapepeaklevel)ACbiasDeck1:playbackheadx 1Deck2:Recording/Playbackheadx1/era
14、seheadx 1LaserSemiconductorlaser(1 =780nm)D-Aconverter1 bitdualSignal-to-noiseratio83dB(1kHz,O dB)Harmonicdistortion0.05%(1kHz,O dB)WowandflutterUnmeasurableCabinettype4 way(magneticshieldedtype)SpeakersSubwoofer:200mmconetypeWoofer:120mmconetypeTweeter:60mmceramictypeSupertweeter20mmceramictypeImpe
15、dance6 ohmsOutputsoundpressurelevel87dBAM/mDimensions(Wx H x D)260 x 353x387mm(10/,X14X15/,ln.)Weight6.5kg(14Ibs5OZ.)Cabinettype4 way(magneticshieldadtype)SpeakersSubwoofer:200mmconetypeWoofer:120mmconetypeTweeter:60mmceramictypeSupertweeter:20mmceramictypeImpedance6 ohmsOutputsoundpressurelevel87dB
16、IW/mDimensions(Wx H x D)270 x 440 x316mmWeight6.8kgcGeneralPowerrequirementsU:120VAC,60HZLH:120V1220-230V1240V AC(switchable),50/60HzPowerconsumptionU:195WLH:250WDimensionsofmainunit300 x 357.5x376mm(1 17/8X14/,X147/,in.)Weight12.8kg(28Ibs4 OZ.)GDesignandspecificationsaresubjecttochangewithoutnotice
17、.c Theword“BBEandthe“BBEsymbol”aretrademarksofBBESound,Inc.UnderlicensefromBBESound,lnc.GDolbynoisereductionmanufacturedunderlicensefromDolbyLaboratoriesLicensingCorporation.“DOLBY”andthedouble-DsymbolnoaretrademarksofDolbyLaboratoriesLicensingCorporation.4RadioFans.CN 收音机爱 好者资料库NOTEONBEFORESTARTING
18、REPAIR1.ForceddischargeofelectrolyticcapacitorofpowersupplyblockWhenrepairisgoingtobeattemptedinthesetthatusesrelaycircuitinthepowersupplyblock,electricpotentialiskeptchargedacrosstheelectrolyticcapacitors(C 101,102)eventhoughACpowercordis removed.Ifrepairisattemptedinthiscondition,thesecondarydefec
19、tcanoccur.Inordertopreventthesecondarytrouble,performthefollowingmeasuresbeforestartingrepairwork.Discharctetxocedure,!1“!RemovetheACpowercord,Connecta dischargingresistoratanendofleadwirethathasclipsat bothends.Connectortheotherendoftheleadwiretometalchassis.Contacttheotherendofthedischargingresist
20、ortothepositive(+)side(+VH)ofCIO1.(Fortwoseconds)Contactthesameendofthedischargingresistoras steptothenegative(-)side(-VH)ofC102inthesameway.(Fortwoseconds)CheckthatvoltageacrossC 101andC 102hasdecreased1 Vorlessusinga multimeteroranoscilloscope.LSelecta dischargingresistorreferringtothefollowingtab
21、le.Fig-1Chargingvoltage(V)Discharging(Clol,102)Ratedpower(W)Partsnumberresistor(Q)25-48100387-AOO-247-09049-140220587-AOO-232-090Note:Thereferencenumbers(C101,C102)oftheelectrolyticcapacitorscanchangedependingonthemodels.Besuretocheckthereferencenumbersofthechargingcapacitoronschematicdiagrambefores
22、tartingthedischargingwork.2.CheckitemsbeforeexchangingtheMICROCOMPUTERBesuretocheckthefollowingitemsbeforeexchangingtheMICROCOMPUTER.ExchangetheMICROCOMPUTERafterconfirmingthattheMICROCOMPUTERissurelydefective.2-1.RegardingtheHOLDterminaloftheMICROCOMPUTERWhentheHOLDterminal(INPUT)oftheMICROCOMPUTER
23、is“H,theMICROCOMPUTERis judgedtobeoperatingcorrectly.Whenthisterminalis“L”,themainpowercannotbeturnedon.Therefore,besuretochecktheterminalvoltageoftheHOLDterminalbeforeexchange.WhentheMICROCOMPUTERisnotdefective,theHOLDterminalcanalsogo“L”whenthePOWERAMPLIFIERhasanyabnormalitiesthattriggerstheabnorm
24、alitydetectioncircuitontheMAINC.B.thatsetstheHOLDterminalto“L”.GGoodornogoodjudgmentoftheMICROCOMPUTERTurnontheACmainpower.ConfirmthatthemainpoweristurnedonandtheHOLDterminaloftheMICROCOMPUTERkeepsthe“Hlevelornot.WhentheHOLDterminalis“L”level,theabnormalitydetectioncircuitis judgedtobeworkingcorrect
25、lyandtheMICROCOMPUTERis judgedtobegood.-r. .-.-FRONTC.B;MAINC.B1:hIkHOLDTIIV1lVItIIInsomemodels,itis PIN.5-OVERLOADDETPOWERAMP-i-$3DCDETPOWERAMP:.ACDETPOWERSUPPLII7L-dependmguponuncroprocessor.-.-.Fig-2-l5RadioFans.CN 收音机爱 好者资料库Insucha case,checkalsoifthePOWERAMPLIFIERcircuitorpowersupplycircuithasa
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