Yamaha-AV80Y-int-sm(1) 维修电路原理图.pdf

STEREO AMPLIFIERAV-80YSERVICE MANUALr-.:-o=H model only-0-WI. . .:I-o0-II-I.-.CONTENTSIMPORTANT NOTICEThis manual hasbeenprovided for the useofauthorized YAMAlIA Retailers and theirsenicepersonnel.Ithasbeenassumed that basic service procedures inheranttothe industry, and more specifically YAMAHAProducts, are already known and understood by the users, and have therefore notbeenrestated.WARNING:Failuretofollow appropriate service and safety procedures when servicing this productmay result in personal injury, destructionofexpensive components and failureoftheproduct to perform as specified. For these reasons, we adviseallYAMAlIA product ownersthatallsezvicerequiredshould be performedbyan authorized YAMAlIA Retailer or theappointed service rqresentative.IMPORTANT:The presentation or saleofthis manualtoany individual or finn does not constituteauthorization, certification or recognitionofany applicable technical capabilities,orestablish a principle-agent relationshipofany form.The data provided is believed tobeaccurate and applicable to the unites) indicated on the cover. The reserch,engineering, and service departmentsofYAMAlIA are continually striving to improve YAMAlIA products.Modifications are, therefore, inevitable and specifications are subjecttochange without noticeorobligatim toretrofit. Should any discrepancy appear to exist, please contactthedistributors Service Division.WARNING:Static discharges can destroy expensive components. Discharge any static electricity yourbody may have accumulatedbygrounding yourselftothe ground buss in the unit (heavygauge blackwiresconnecttothis buss).IMPORTANT:Tumthe unit OFF during disassembly and parts replacement. Recheck all wolk before youapply powertothe unit.TO SERVICE PERSONNEL1REAR PANELS1-2SPECiFiCATIONS.3BLOCK DIAGRAM .4-5INTERNAL VIEW .6DISASSEMBLY PROCEDURES6-7ADJUSTMENTS .711003801PRINTED CIRCUIT BOARD8-14INTERCONNECT WIRING DIAGRAM15COMDATA16WAVEFORMOFTEST POINT17SCHEMATIC DIAGRAM18-19PARTS LIST .20-27REMOTE CONTROL TRANSMITTER28YAMAHAYAMAHACORPORATIONPo.Box1,Hamamatsu,Japan1.4k-34613PrintedinJapan.91.2RadioFans.CN 收音机爱 好者资料库AV-80YTOSERVICEPERSONNEL1.Critical Components Information.Components having special characteristics are marked andmust be replaced with parts having specifications equaltothose originally installed.2.Leakage Current Measurement (For 120V Model Only).When service has been completed, itisimperative thatyouverify that all exposed conductive surfacesareproperly insu-latedfromsupply circuits.Meter impedance shouldbeequivalentto1S00ohmshuntedby0.1SJlF.Leakage current must not exceedO.SmA.Besure to test for leakage with theACpluginbothpolarities.ACLEAKAGEWALLEQUIPMENTTESTEROROUTLETUNDER TESTEQUIVALENT1IIINSULATINGTABLEPOLARIZATION (U, C models only)This amplifier productisequipped with a polarized alternat-ing-current line plug(aplughaving one blade wider than theother). Thisplugwill fit into the power outlet only one way.ThisISa safety feature.1WARNING:CHEMICALCONTENTNOTICEIThe solder used in the production of this product contains LEAD. In addition, other electrical/electronicand/or plastic (where applicable) components may also contain traces of chemicals found by theCalifornia Health and Welfare Agency (and possibly other entities) to cause cancer and/or birth defectsor other reproductive harm.DONOT PLACE SOLDER,ELECTRICAL/ELECTRONICORPLASTIC COMPONENTSINYOURMOUTH FOR ANY REASON WHATSOEVER!Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale sol-der fumes or expose eyes to solder/flux vapor!Ifyou comeincontact with solder or components located inside the enclosure of this product, wash yourhands before handling food.REARPANELS.U model,.-_-CO-_-LD-_w.NlLt.&.VlInHIWIT.OIra:._.:-_.-:eo:v80Hz-=-.Il&8Cf1UlWO=:=oE:=-IC-OD._.ao_oo:r-ep1,JG-Q-_:.!;.ooo=-=-=-.-.,rilU.C model-.,.,.-_-CO-_-_-LD-w.N.JzouUJoUJ0:4AV-80YYSTSELECTORSW201MAINH.P.AMPLOUDNESSBALANCEVOL.IC201AIC202APOWERAMPRY201YSTEOCIRCUITIC221ALRR-+5EOUNITIC20aAMOTORaCONTROLICIOLEVEL.ICaMETERIC9KI-K4INPUTSELECTOR01,03&-:;.;.:.=.;=-_.IPOWER SWSW2-8R +A1.-.PHONESPOWERSWITCHDRIVE0246MOTOR CONTROLSYSTEMICaCONTROLLERIC10MUTET201SUBIIPOWER+12SUPPLY0210POWERSUPPLY&F201)J-COMRESETBPOWER SUPPLY09,1010203,20406,79IC204-20745AV-80YINTERNALVIEWDISASSEMBLYPROCEDURES(Remove partsindisassembly orderasnumbered.)1. RemovalofTop CoverRemove 5 screws (D)inFig.1,andslide the TOPCover back.2.RemovalofFront PanelRemove 6 screws (CV)inFig.1,andpull theFrontPanel toward.oPOWER TRANSFORMERf)MAIN CIRCUIT BOARD(2)oMAIN CIRCUIT BOARD(1)eJl-COM CIRCUIT BOARD(9)(3Jl-COM CIRCUIT BOARD(1)(3MAIN CIRCUIT BOARD(4)oJl-COM CIRCUIT BOARD(3)Top Cover63.RemovalofBottom CoverRemove 4 screws ( )inFig.1.Fig. 1 InstallationofTop CoverFit the lug of the Top Cover into thegap between the Panel and Sub-chassis.Turn the Top Cover downward.-.As the Top Cover hits hard, it will getdamaged.Fig. 2Note1DPlace the lug of the Top Coveron the Sub-chssis.Note1:The side of the Top Coveris further inside than thePanel upper rib.Fig. 3Note21(2)TumtheTopCoverdownward.INote2 : Its supporting point should beas in abovestp:):=):JlCOM(8 )( 1 ):JlCOM(2)Jl-COM C. B ( 5 )Jl-COM C. B ( 6 ):0:COM(5 )E;JI-PLDREMOTECONTROLVOLUME-FROM:JlCOM( 1 )11ABcDPRINTEDCIRCUITBOARD(Foilside)1Note)xiIfi:ComponentsideMAIN C. B(2)U,C modelsACOUTLETS_.-FROM:ACCORD2=ao:i.at-021000.T2013TO:POWERTRNSFORMER4-MAIN C. B(2)A,H models4,-FROM:ACCORDTO:ACOUTLET(AONLY)-or-.TO:MAIN(7)(HONLY)-95.-: J:m:EyEa0:i.a021ACIt-CD.AC2T201RE(AIBE(H)TO:POWERTRNSFORMER126DEMAINC.B(2) R modelACOUTLETSFG-FROM:ACCORDAV-80VMAIN C. B(6) R modelH:ORD.,.=oo=iot-TO:POWERTRNSFORMER:I=_MAINC.B(7) H modelACOUTLETSVOLTAGESELECTOR12FROM:MAIN( 2)-.-13/AAV.80VBcDE1PRINTEDCIRCUITBOARD(Foilside)2345Note)*iii:Componentside-COMC.B ( 7 ) H model.LFROM:J.l-COM( 1)1FISTANDBY-COMC.B ( 2 )MAIN C. B (8)IFROM:MAIN( 1)RYTRLGR+15PHONESEQ.UNIT(SLIDE POTENTIOMETER BLOCK)-COMC.B ( 8 )6TO:COM(9)7POWER14INTERCONNECTWIRINGDIAGRAMIMAINC. B11)I-.!I-CONc.813)II-CONC.B(91ITR20rlL_.:(U.C.A.H)-=-_-;_.,-,PIlE( R ).i-=-+-:GMAINC.8(21157AV-80Y.IeDATAIC10 :lC6505C-42774bitIl-COMPAO-564.4BITPCRAMSTACKI1024.11BITROMPA2PAlSTACK2PA3PAOP80-5STACK3PBOvool+5VISTACK4PBI(NTPB2HOLDPCO-5PB3PIIPCooPloPCIPH3PDO-3PC2PH2PC3PHIPDoPHOPEO-3POIPG3PD2PG2PD3PGIPFO-5PEOPGoOINTPElPF3OSCIPE2PF2oscOSC2PE3PF IRESPFOHOLD-RESTESTOSC2-0TESTIOVIVSSOSCIPHo-3P10-5-01100PGO-3-oIlSSPin No.NameI/OFunctionPin No.NameI/OFunction1PA2INot used24PFO0PHONO2PA3IH level (TAPE MON)25PF10CD3PBOIK126PF20TUNERFunction control4PB1IK227PF30VDPJ(H:ON,L : OFF)5PB2IK3Key input(H: ON)28PGO0TAPE.6PB3IK429PG10VCR7PCOI/O01 30PG20Not used8PC1I/OD2Key scan signal(H: Active)31PG30Power control signal(H: ON)9PC2I/OD332PHO0VolumeUpcontrol signal10PC3I/OPLO PHONO PLAY/CUT Control signal33PH10Volume Down control signal11PDOI/ONot used34PH20TU2.12PD1I/OCOO35PH30TU1Tuner control signal (Not used)13PD2I/OCD1CDcontrol signal (Not used)AMUTE Audio Muting control signal36PIO014PD3I/OCD2(L : Active) (Not used)15PEOI/OTPO37PI10MUTE Muting control signal(L: Active)16PE10TP1HOLD-COMBackupcontrolTP2DECK control signal (Not used)3817PE20I(L:Back up, H : Active)18PE30TP339INTI+SV19RES0Reset input40VDD-+SV20TESTILSItest terminal (GND)41PAOIRemote control Data input21VSS-GNDPower ON/OFF back up2242PA1I(H: Back up, L : Ever ON)OSC1-COMclock circuit 400kHz23OSC2I16AV-80YWAVEFORMOFTESTPOINTPointG):01,02(Pin 7 and 8 ofIC10)V : 2V/divH : 2msecldivDCrange1 : 1 probePoint):OSC(Pin 23 of IC10)V:2V/divDCrangeH :2sec/div1 : 1 probePOlnt:03(Pin90fIC10)V:2V/divDCrangeH : 2msecldiv1 : 1 probePoint:+5,RES(CH 1 :Emitterof09CH2 : Pin 19 of IC10)V : 2V/divH : 200msec/divDCrange1 : 1 probe17CH1+CH2+(tWhen the power cord is connected to AC outlet.(This waveform is not availablebythe power switch ON.)CH1CH2-I/3TUERPJ2Ba:tna:BU4066BorLC4066BorMC14066BCP(TUNERLDPJ3APJ3BL(+RI7YlKRrlR20(QtlKCDa:ma:RECVCRI7TAPEVCRIBU4065BorLC4066B_INPUTSELECTOR(T1rua:CDrua:mrua:IKIKR31R32lKIKR24R30L()+R21YlKPJ2DRPJ2CPJ2ELPJ2FRPJ7CLPJ7BRPJ7DRPBRECTAPE54671_k1=(:(:;.I:.(:.RESISTORREMARKSPARTSNAMENOMARKCARBONFILMRESISTOR( 115W)0CARBONFILMRESISTOR( 1I4W)6.METALOXIDEFILMRESISTOR&.METALFILMRESISTORg)METALPLATERESISTORFIREPROOFCARBONFILMRESISTOR0CEMENTMOLDEDRESISTORSEMIVARIABLERESISTORI!ilCHIPRESISTORCAPACITORREMARKSPARTSNAMENOMARKELECTROLYTICCAPACITORffTANTALUMCAPACITORNOMARKCERAMICCAPACITORAXIALREADCERAMICCAPACITORPOLYESTELFILMCAPACITOR0POLYSTYRENEFILMCAPACITORHCDMICACAPACITORPOLYPROPYLENEFILMCAPACITOReJSEMICONDUCTIVECERAMICCAPACITOR8PIN CONNECTION DIAGRAM OF TRANSISTORS, DIODES AND ICS.1S5133MTZJ5.6AMTZJ5.6BM5218LV1NJM4558SBA62BA644yV.,LC406&BLBl294BU4066BMC1,.1A8/cD1SCHEMATICDIAGRAMCondition:Setthe Input selectortoCD position.-R39MUTINGRr,22KoIce880.8oR490147003cql;C2B7BIA.B:oT6470o-91R 12i2Kill00iII-11orBA1521B+Qr:;,8.9,hsM521BLVill0R5R43tDl.g;IT:gC627:K.113OKUgjii-6.31(6)j_j:CfsI2700P0.01C33R 5,0-1,4RBIT3lC1B1500-c:.404.7/50220IJo90CD,M521BLV,.iCJ1ioorCBAI52IBNJ1f-iH1i-I,i-L.U-9-Iiiilno.nrrnI _l.;,3ku$E.-T7orL-C44066BIorMC14066BCPPHDND:.t-.:j!l-;l!-I+-=r-1-t-t-i0-:;JO-*-+t-IICDofJ(T)-rj.W6-Jt-1t-+-.+-I-+-.J-HL-f-:8II,- J:.tDRO,-t:.2.ar-91ill10.,.-Ui-=-III-lKR12.():tR9LylKPJ1DRPJIBPJ1CPHONOMMrEOAMPRI05BC2BPJ1ALUn;,;.15D.,;.+;:-074.5DR40,/Ii062ClA.220(6)C(9oC:Oa.ITfC327DDP0.61;goO;f7/6.3R3R42a:.-IT:g27K330KCDPHDNO2.-9PJ2AL3TUNERPJ2BR13lKRR16(QllKITtDITBU4066BorLC4066BorMC14066BCPTUNERIPJ3ALDPJ3BrL(fR1711KRR201(27lKcoITCJ1ITPJ2ELPJ2FRPJ2DRTAPEBU4065BorLC4066B_BU4066BorLC4066BfJfJIT(T)fJITIKlKR24L()tR21YlKPJ2CPBRECTAPE45PJ7BRVCRImPJ7CLRECPJ7DRR30lKR31IKR32lKcoIiCJ1fJIT6I-;:-ift:K403-IIIII:II -=-I._-,I-II23=.IE5(2)-54_:_i-+-+-+C-R:.=.E-ML-I_+-=9_wIJJ.COM(g)ISYSTEMCONTROL1_eC82152DVvIVrV:iI3l0p.ri8UP5.?Ti(J:-R_E_M4 .7-+-f-,152K1TVOOqlI.-,-:_,-i-0-l(T),1-4-.8-+-.,.1.-t5:-:5:+-1-11III-0K2T1NT52155133-IL-_+-ll_-=-R=E,;,;,.M-j1110K3LD7D!I-,H=O=L=-04:.:.:.6:.-+-tt-_H-O=L=-0:1tK4cD:;I-,M=U=TE48-Dl:l-T-A-PE.:O-iI-10(JJ,-9.1TAP2TP1 :LOo0(T)-90LOITP2;TUNERO0o+IC2 : NJM4558SDual Ope-ampVOlVinl+VinlVEE+Vin2 -Vin2 VOl Vee_-C_-EFGH-IL-9-I-LSW4IiLEVELDR.;GPIGPa:c:uJ1515luJr1ITruCIru*2-.J0(tn OUT PUTLEVEL-9.1-,POWER.,l.MAIN!1)i-!I1-;-,-33KLL;!S_qR66.C46I10/_16O-_-_-_-_-_-_-_-IIJ.COM(g)I#27SYSTEMCONTROLE+9C822PSC821BUFFERIVIC384.7/50IDt:CD0a:NJM4558S-to-3p8Op.Fc8UP52u -TIPEMON_;1I-R-=-EM4:!.7-+-_-:-:-_f-, 52ruVOOQlIy.-,-r-_.-+_Ot:CD0a:gjt:oruru-j07!stOTAI14ES-148IISUPPLY18OUT6OUBIN6our.IN 5OUT3CUT2OUTIIN 2IC11: LB1294LED DriveIca: BA6229Motor DriveIC9 : BA6144Level Meter Drive.Allvoltage are measured witha10Mn.JVDC electric volt meter.Components having special characteristics are marked Lf:.andmustbe replaced with parts having specifications equaltothoseoriginally installed.Schematic diagram is subjecttochange without notice.UCR,A :a:-ttl:IR93OPEN3.3KIII 2R995OPEN.7K8ii:3R102706208iito-.o_2SC17OSIRSIu01112OPEN2SC26031E,FI2SC3311AIOR.SI5022OPENSLR-3VC3H3LASTNO.C57R106Q1202ICIISW8PSVISII222CIN/OUTOuT/INT/ININIOUTIICOM(6)I+9IC3-6: LC4066B, MC14066BCPorBU4066BQuad Bilateral Switch)-+-13=0II.M7_)_1POWERSUPPLY8)l-COMRESETVi02V02VeelII!-IIII.-III-023155133cr).S.4-aol-4:!.!S-4-_-j_JK.L.-1_AV-80YoruClIIIIII_1622ItIDLINGCURRENADJ.(Lch)Ica: BA6229Motor DriveIC11 : LB1294LED DriveUCR.A a:-.l01R93OPEN33Ki.2R9495OPEN4.7K.03Rl02470620t:JI.D_2SC1740sIR.slu)401112OPEN2SC26031EF I2SC3311AloR.sl5022OPENSLR-34VC3H3LASTNO.C57R106PS+9I).tCOM(4)I-1:;0II.M7_)_1POWERSUPPLYa)lCOMRESETrC912345-II!I-IOI-II:020SLR-550C3HIII.-, r-II023lSS133f-!-5.:!-4.:!-4.-S-+-.,50f1If1,U,)LEVELDRIVE101308Q-340C3H334NOTICE(0).-Japanesemodel(U).U.S.Amodel5(C).Canadianmodel(A).Australianmodel(G).Europeanmodel(B).Britishmodel(R).Generalmodel(P).RPmodelI.JGRAPHICL-_-+-,EQAMP,-+15AMPVIDEOVIDEOSELECTOR,mlu1,1rx12. 3. IC,H2: Dr(:47116C333R365Bo:rx1:.lOrtl;J.ii14:,7116;iiiiiiiiiii-Fmiiiiiiiiiii-I.ii7!ii6iiiiiii-I-IIlII,rMo,ofml11l1li100I :;0_;0r(J:If t u;3799-05-J7-12-I0227022933-9.19.0C1B15vlC1B151vlr-l-,Ib-91-_1iIIIIlIllI-PJ203IIlIliI:IIImIlpMONITORr.-R-VVI:7-CH3:r.I-+-1-+-i-.-JSVCRII1000/10-+-+-1_=+-.!.:iI-:.:.:.:.:.-+-+-Iro6I-Om4ES,i-c,; -_: 0,-JPB.VCR1REC0Y07rl7II6II,PJ201ILOR3641008TO)J-COM(9)PIN CONNECTION DIAGRAM OF TRANSISTORS, DIODES AND ICS./2SA105(Y)2SC2925TjlPC2415HFAN79M15F2SA13582SA14914048411551332SA970(GR.BL)DTC144E5AN78AN79M09F2SC34212SC3855284841MA1852SA1370(D. E. F)2SD1485(P:O,R)15R139-100T322SC1815YMTZJ12C2SC1740S(S,R),:INPUTCOMMON.A2SC2603(E. F)2:COMMON2:INPUT2SC3311A(O,R.5)3:OUTPUT3:OIJTPUT2SC224O(GR,Bl)(2SC2878(A,B)2323ECathodeBE19ABcDAV-80YSCHEMATICDIAGRAM1RESISTORREMARKSPARTSNAMECAPACITORREMARKSPARTSNAMENOMARKELECTROLYTICCAPACITOR181TANTALUMCAPACITORNOMARKCERAMICCAPACITORAXIALREADCERAMICCAPACITORPOLYESTELFILMCAPACITOR0POLYSTYRENEFILMCAPACITORUCDMICACAPACITORPOLYPROPYLENEFILMCAPACITOqSEMICONDUCTlVECERAMICCAPACI-J:L3L5L7L2L4L6MLAL1MLBNOMARKCARBONFILMRESISTOR(I:;.-ICARBONFILMRESISTOR(II!DoMETALOXIDEFILMRESISTORR2012202PlK2SC38556800/562SA1491T7A250VT2 5A250V470/63470/2512KOPEN47/16OPEN!GR.BLIOPENMTZJI2COPEN(P.O.RIOPEN10/16OPENOPENSHORTc;-I.2KB.2K1001F2017A125V7AI25v2C412470/25470/253R463.470OPENOPEN4C413OPENOPEN50244OPENOPEN60212OPENOPEN70245OPENOPEN8C414OPENOPEN9J381SHORTSHORT1011R3002Pl8K2I.021321.2502029150215216258134716C283.28.820017117RY201OH2402-0TM,I18C302.3030.08219C3043050.2720C306.3070.3321C32832903322C4224230.5623C347-3562.7K24R22322410K25R227.22815034GRAPHIC-+-EOAMP5NOTICE(.J).Japanesemode1(U)U.S.Amodel(C )Canadianmodel(A)Australianmodel(G)Europeanmode1(B).BritishmOdel(R)Generalmodel(P)RPmodel_,1R202220-+-:;.+15,-H-,I.J-15GLP2.156IIIIPJ20IILOR364.100-VIDEOSELECTOR-,-j-,10f12.3. 1C332-, J121.J:-T)-C820-5-IJK_1#201C82041f!?IaKIIXTRIJ,2RY4.81x2IIIg -IIcrCB20-5-,I)471JK201#20lK/CB204f1:-OBc:.=Hr-YS-1-TR-.j+-_+-_;-_lW25v.rl=Y:A.Blx2;:._PHONES+15IKn-:-G-_-.JrPROfcr0lBIMAINI8i1;._10_,c:r.r-.EEVss3iI222CIN/OUTO.JTIN OUT/IN INtOUTIC201 : IlPC4570HAIC221 : NJM4560SDual Ope-ampVeeVo,Vin,+VinJVEE+Vin2 Vin2V02Vex.IC203 : LC4066B, MC14066BCPorBU4066BQuad Bilateral SwitchIC202, 208 : M5218ALDual Ope-ampIC219, 220 : M5226PWqualizer AmpINDVee0.IA-,t,I,I,IIIII,I,I,I,II,-I,I,I,III,I,488424249218221Ie0cra-D .70217C22401GR,8L)62_,0203I.404841L-f-_-_-_-_-_-_ISUPPLY,:iil,.,-=H:47tII-:jTE202QC.XH048H.XI78-lkIr:r:l- - - - - - - -,AC2-f-(/,II): IvI,ACl:II):I,r-t:rf1T,1Y-+-r-+c-r:i1I:E:JIII0III-+-t-,I -II:Lf12g1itFi,1515HF2927- - - -,I :l9!i,IAI,or-=-t!2;,2,:+,9-174-.-,:-,-Ig.a-+r=-n-ilglSTE20lUgj:u,:-rLC:ASTNO,-+-+-.-4ICIotIlIIU.iG,g:UJIreII1506u:1_.-,51f-+-_-.,;2N9.-J81-J_+-l-+-_-Il;,-I-!JILf12,2,d,tJ,?05-51-/15A9701GR,BLICURRENT ADJr-(-llt-(.uIcJ-l_-+l-+-*Allvoltage are measured witha10MnlVDC electric volt meter.Components having specialcharacteristics aremarkedandmustbereplacedwith parts having specifications equaltothoseoriginally installed.Schematic diagram is subjecttochange without notice.f,-JKLL5 -InterchangeablePartsatManUfacture-StageMarkReferencePartsNumberPartsName102232SC17405IS.RI2SC26031E. FI25C3311AIQ.R. SI-ITE205;ffi-I4.7L2024.7R270IIfBSPEAKERSI l-kB1.-i-I1L201I1.5,HliIR2691I1I_1N(2VeeVo,-Vin1 +VimVEE+Vin2 -Vin2V02VeeIC201 : IlPC4570HAIC221 : NJM4560SDual Ope-ampIC203 : L