Pioneer-SX82-rec-sm 维修电路原理图.pdf

ISERVICE TVIANUALAM IFM MULTIPIEX RECEIVERsxrg2pINNEER ELEGTRNNIG GNRFNRAjTINilTOKYO JAPAN*i,s,RadioFans.CN 收音机爱 好者资料库t-IIICONTENTSI SCHEMATIC DIAGRAM2 LAYOUT3 BLOCK DIAGRAM4, ALIGNMENT INSTRUCTIONS5. 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Oscil-loscope in parallel at STEpS 9, 10IISTEPSSLgRal. Generator Input _Coupl ing I Frequency ii,lod_u.DialSettingConnectVTVl. . AlignmentAdjumIPin I1/l4( 5ra6 )of:5:107 mc100 d.bNonePoint ofno inter-ference asnear asBB mcDC VTV!,Tto Pin 5of TA-T,5.Top ofT-4Ad-just to getzero volts(between posand- negread.ing)2il10, mc100 d.bilililBottomof T./t-fAd-just to getMaximu:ndef lection14ll*tt tI 11mcI roo d-bIIIEPS 1, 2lIr,nd- 1ileveral timItUto getLilIa st_mt-IaAd-just to getMaximu-md.efl-ection(Neg. read-ing) _curve as Fig.25Pin Iv_L)(eru5)oftri:10 7100mcmcililDC VTVIIto Pin 2of T-tiblTop and-bottomof T-)Ad.just to getMaximumd.ef lection(Ng, read.ing)6Pin 1 ofoLz( 5ra5 ),110.7 mc70 dbilililTop andbottomof T)L-CLt?t-7IFin 7vtt( 5nqe )of.9107 mc60 d.bililltTop and-bottomof T-L-allBRepeat STIEPS 5, 5 and- 7 several timeto get? simil arcrrrro 2s ficn 49FM antennaterrninal90 mc20 dblkctoTi90 mcAC VTWIto aud.iooutput - ./ nttl)Lr j&L,oAd-just to getMaximirmd.ef lection10il105 mc20 d_bItf05 mcilnmttrcr &Inmll11Repeat STEPS 9 and_ 10 mtil no furthl-mprovemenerprovement 1s possibleNoter 1)2)1)4)5)Position of Switchc SELECTCR FM IPXil-AFC OFFPosition of Vohl_nre Controls IviINIl,Uftl(main volume control)couple VTVM and- Osciltoscope in paratlel so as to observeripples simrrltaneously At Step 5, I megohm is indispensable in coupling VTVTvI topin 4 of T.,Cj in series.5) At steps 6 and- 7 , apply the composite signal to Flli antennaterminal and- measurerrent must be mad-e on each right and- leftchannel separatelySTEPSClrcuit tobe ad-justed._ Signal Generatol _lqpgj-_InputSignalC ouplinglilod-uConnectVT|M_ . Aflgnment _Ad-just i Remarks11B1- -f! USeparationCoilAud-ioOscillatortoY-., 1,18 kc2OO mv( rros )Noneto junctionCcno &T_L( )BottomOIt _ _ho IAdjust to getl/lax d-eflectioPosition ofVR-n-r:)w!.lVlinimuin25l kcTrap Coilil.r- .,ll ,.t6l kclOO mv(rms)lln 5tl.ri.tA-, )Bottomof o,Ad-just to getMin. def lectioPosition ofVR-. 3)UIn/iaximu-m318 kcTrap Coilil-1/t .+1B kc10v?t.rgBottomofL_,urAd-just to getl.,ininiu-rnd-ef lectionLilil.b,ililc_ _L-) I)LrBottomOIL-ta4il)Sub CarrierCircuitIrlultiPlexGeneratorto FliAnt ennaterininalbO db o1L9 kcPilotsignalrakPin 4OIrttjojfT;rfllot- EO2ry)- 501Ad.just to getMax d-eflectiofron Tq., to 5)w)and 501 reversrepeating sevetimes6PilotphaseIt50 d.bCompositeSignaleachchanne I19 kcPilotlO/ &Sub &iviain- .;J-KC )O/oar jzLX- orr .;:!r *t,T- 501Ad-just to getiWax. output anlfin, d-istortioConfirm eachchannel7B9SeparationControlRepeat STI-LJ UUJ- UUind-i-catorlightt?6 and79lTreitseveral t1A d.bI O lrnpilo tilMAOL9 kcI ( u/iltrp5c1un5otAd-just -i;o getI,in. outpu-t ofreverse channeConfirn eachchannelAd-just to glow1t501 when 19Filot signal ina)Iol rrraldYrtt,kcSsigna,l:appliecllrJ(9flt+JoFl(LFfo()lrJ(,FJoFf(LFfq()oB(B(+)o(-)trJ(,05oFR t-rt-3gOoROAD)lo.4 lo 3 llFREQ. DEVIATIONIN MEGACYCLESFis .2FREQ. IN MEGACYCLESCHARACTERISTCFig,3A(SHRP)-lJ I KCFM sELEcrlvlrY455FREQ. DEVIATIONIN KILOCYCLESFig,lDIAL CORD STRINGINGI START9 ENDCONNECT ONE END OF DIAL CORDTO SPRING AS SHOWNBELOW STRING AS INDICATEDBY ARROW KEEP A MODERATEAMOUNT OF TENSION ON CORDTHROUGHOUT STRINGING PROCEDURETIE END TO SPRINGDR IVE SHAF T43 TURNSD-5PO I NTERPAETS LIST OF SX-82CAPAC TORSfn uF , IV tolerance for all f ixed- capaci-tors,unless otherwise noted. p = lluFSynbolcL e2C1 ,4C5 ,5C7,BC9,10c1l,12cl1,r4c15,18c15 r 77 ,79 ,2O ,2I,22c21 ,24c25 ,26c27 ,28c29c50ClLc52c11 ,54c15 ,16C37 ,18c19 ,40C4I ,42c41 ,44 ,45 ,45c47C4Bc49c50c51c52c51 ,54c55c55c57c5e,59c50c51c52c61 ,64c65c56c57C5Bc6gc70c7tc72c75 ,7 4,75c76c77C7Bc7gCBOCBlDescriptionMicaMica0i1 paperMicaElectrolyticMylar0i1 paperCerami-cVacant0i1 paperlVlica0i1 paperMica0i1 paperMlca0i1 paper0i1 paper0i1 paperElectrolyticElectrolyticCeramiclVlylarCeramicCerami-cCeramic0i1 paperCeramioCerami-cCeramicCerami-cCeramicCeramicCeramicCeramicCeramicCeramicMicaCeramicCeramicCeramicCeramicCeramicMi-caCerami-cVacant0i1 paperCeramicCeramicCeramicCerami-c0i1 paperCeramic5oopOOp0. 02llOOp200.10. 025op0. 052OOp0,05lOOp001lOOp001o.o20005107)JOpnaruup1op00050. 0500c500010005lop2p1op0. 002001.0.015op1OOp001_5op0. 010. 0052OOpICOOp2OOp0. 051op45oplOOp2op0 051opOOvOOv0Ov0Ov1)OvOOvOOvOOvOOv00vO0v00vOOv0Ov0OvOOvCOv6v1)OvO0vOOvO0vOOvOOvO0vOOvOOv0OvOOv00vOOv0Ov0OvOOv00vOOvO0vO0vOOvOOvOCv0Cv0OvO0vO0vOOv0OvOOvOOvOOvPart No )q2q2q2q,2q2q,:_q2q2q2q,zd2qiIN-rr0CB2CBlC84NQtrcB5, 87CBBCB9,9Oc9I r92 rglcg4c95cg5,g7C98,99c100c101c102Crc1cl04c105 ,to5Lq t olerancek = kilohm,SyrnbolR1R2 rJR4R5 5R7, BR9,10Rl1Rl2RCT4R15 ,15R17 e 18R-g,2CT?I CDILLL, LLR23,24R?_5 ,26 127 tOpra )arLLvgL/RlI,12R11 ,14R55,15Rt7 ,38R1g u 40R4L ,42R43R44R45R46R47 ,48R49,50Rrl-,52R55,54,55 ,56P,57 ,58 59 ,50R51R52CeramicCeramicC eramicCeramlcCeramicCeramicCerami-c0i1 paperElectrolyticElectrolyticElectrolyticElectrolyticElectrolyticElectrolyticElectrolytlcCerami-cMi-caCeramicRES ISTORSL,j watts, r-rnlessm = Megohm.lescriptlonCompositionComposi-tionCompositionCompositionCompositionCarbonComp sitionCarbonCompositionCarb onCarb onCompositionCarb onCompositionComposltionC-R networkCompositionCompositionCompositionConpositionCompositionCompositionCompositionConpositionCarbonCompositionCarbonCompositionCompositionCompositionComposi-tionCompositionCarbonComposition0 c025oplop0,010,002c.010. 0020,00240-20-20AA-2a-)1005C01002C7)2OOp2OOp0. 012q2q2q2q,2q2qOOv00v00vOOvOOvOOvCCVOOv45ov15ov2JOv25v25vlOOv1vO0vOOvOOvotherwisemarked_ or not ed_,Part No.47 0k220k/7 l1-+/wr100k1Ock4kI tr/1-L -, Vlr100k150k100k200kcaa- o CIIL100kL7kI I -11ak100k2,2m .)t-aoLr,100k5tk220k1m47 C ohm100 ohm47C ohm100 ohm1m220k47k47k100k5ko D1.C- c Lts5/2C47R5t ,54R65R66R57R6B ,59R70R7L,72n-znl)R74ft()RT5Fl IR7BR7gRBORBlRB2RBR84RB5RB5RB7RBEpaortv )R90porLt ) LR92RglRg4Rg5I-? (JARg7R9BR9gR100R101R102R10, ,IO4R105R05R07, 108R10gm-10R11Rl12Rl1R114,II5R116R117Rl1BRl1gR120 elzrRIZ2RL21RI24,I25Synb o 1VR1w2 r3VR4,5w5,7VRBCompositionCompos j_tionCarbonCompositionCompositionComposi_tionIrilirewoundCompositlonCompositionCompositi-onConipositionCompositionComposltionCompositionCompositionCompositionCompositionCompositionCompositionCompositionCompositionComposi_tionCompositionCompositionComposi-tionCompositionCompositionCompositionCompositionCompositionConpositionConposi_tionCompositionConpositionCompositionCompositionCompositionVacantCarb onCarbcnCarbonCarbonCarbonCarbonCarbonlAIi-rewoundirervoundInlirer,voundV/irewoundCompositionCarb onVacantCornpositionCarbonCarbon27ka a1 -aLr5k.) at-aaLt. -7t -a lrt2.2k20 ohrn1m/_7kI I -1m5e ohn4 ,7k470 ohn100 ohm2 2kaal-LLT2)V15ka a1-a- o Lf5e ohm2.2m Al1_ 6 a_IAAlztK100k47k58 ohm100k ntzKfO ohm100 ohm22Ak2.2mI 71-tf . lAa a_a, tK100k)mL 6 CILL220k15kl-5k10k/ -bUUK47k7 71-) )t10k15k2,5k1.5k50 ohmaaa_ a alIr1k27 Ok1k1k2q2q2qt/+2q2q,2q2q,2q2q,2q2q,2vlZw2q2q2q2q,2q,2q2A/2V/2q,2q2q,2q2q,2q2q1w2w2qBw4ow2Ow20w2V/2q,fgPOTENf IOI,/IETERSlescriptionAUX, TEVEL 50Ok dual_ tandemTREBTE & BASS 5 OOk d_ual tand_emBAI,ANCE & 1rTAIN VOLUVIE, QUADRUPTEDC BALANCE CONTROI SOOKBTAS ADJUSTMENTPart No.ARB541ARB 708ARBBOB18.8541ARB545TISymbolt1L2 r5L4 rTTtrLJ)tbLB 19110tl1T1T2MZL)r4TT5 7TBvl ,?Y1V4 15Y6 r7 ,B ,9v10vl e 17vI2 ell ,L4v5L5VlBDr e2D5D4,5D6SELECTORMODEst-1 ,2 ,1 ,4 rBsL-5 ,5 17 ,gPS-1Part No.Ar0415ALO502Ar0410Ar0415LL5r2AL)5O2AL5r.05A T430r- t/419105ATg105ATB105ATB2OBAT4101AT6L23ATJ22BcCOIIS, TRANSFOR1VIERS AND CHOKESDescriptionFlli ANTEJINA COILFI,I RF CIIOKE COIL I utiF1VI FIATE CHOKE COIL fuJlFl RF COIIFM OSC COIIFl/I FIIAIffiNT CHOKE COIL I uHFILTER CHOKEIVilM OSC COIIam/rur rrrAM DET, FM IFTFlVi IFTFIVI DET IFTA1 RF TRANSFOR,/MROUTPUT TRANSFORMERPOVIER TRANSFORVMRTUBES AND DIOES12 AX7L2AX75lme71Bg-A5cvrl46aQa5w66yt55vn6H!i-840470OABlsE*05bt6c-4s-Lrli n *p) 1rr,rr lr.,i-;-:-.1aud io anp )phase inv)power amp)FM RF amp) NuvistorF1VI RF gOSC AFC MIX)1,UampAIvl RF amp)AM OSC, MIX)tuning ind.icator )Fl,i DET )AM DET)silicon rect)selenium rect)S/ITCHESInput selector switchlVlocle selector switchSlide switchSlid-e switchPor,rrer swi tch ( push button )Dial PointerFront panelDial scaleDial pu11ylial springFuse hold-erAC consentFootKnob, input sel-ectorI0rob, mod-eIhob u double insid-eKrob, double outsld_e?ftrob, tuningTerminal, speaker output 4pTerminal FiVI/AlJl Ant 1pAGr01AGlrloAS1615AS1528AS62UAS6216AS5105AA1L47/JlJttzL76AL1241cAM4102AE4102AKg5olAKB2Olaftr51olAA11t1AA11r1A41015AA1016AA101 1AP1TL1APJ1117-/SymbolTerminal inputFuse 5 amperePilot lightScrew, to fix metal coverScrew, to fix bottom plate6pPARTS LIST OFMULTIPTEX SECTIONRESSTERStV tolerance t/z% watt, unless otherwj,se marked-k=kilohmr m=Megohm461;/Part No.AP2213A81005R501R502R501R5 04R505R506R507R5OBR50gT)tr1rrL, rvR511R5-2R5T1R514R515 ,5L6R5U ,5IBR51g ,520In uFr p=c501c502C5OJc504c505c506c507,5OBc50gc5 0c511c512C5T1C5T4C515C5MC5L7c51BC5T9c520c52Lc522CompositionCompositionCompositionCornpositionComposJ-tionCornpositionCompositionCompositionCompositionCompositionCompositionCompositionComposi-ti-onCompositionCarbonCarbon47 0k10k1k10k47koat-a ar10k470 ohm771-) )r220 ohm100k47 0k27Ok1k10k40kCAPAC IfORS0. 050.52)OOp41op2Jo0p200010, 01lOOp41op0.10020.051000p0, 050.00715op2J0Op15op2!OOp-l tr*J-) Por noted_.5%5%uuFlVlylarlVlylarPolyethylenePolyethylenePolyethyleneElectrolyticMicaMylarIicaPo lyethyleneMylarStirolMylarPolyethyleneMylarStirolMicaPolyethyleneMicaPolyethylenelilica2q,2q5%5%/2C47q,2qLq5/,2qqal2q5/,2q5/1q5%rq5/,rc/15Ov1!0vOOvO0vOOvJO0vOOvJOOvOOvOOv1)OvO0vJ OOvOOv1)OvO0vOOv0OvOOvOOvOO.rI-TRANSFORMERSSymbol Description Part No.T501 1!kc double tuned- AT9B0BT502 1!kc single tuned. AT9BO9T5Oj JBkc multiplier AT9B10t501 ,5A2,501 ,504 JBkc traP coilCOITSTUBESAL9B07v501v502v501Nrr0lI rx rt,tuuu I5aQe6w5Neon lightAV74C1DIODESD5 01 ,5O2 ,iol,io4 otBlf rN14POTENTIO/MTERSVR501 Separati-on control AR0011VR502 Ind-icator light adjustment AR0012TROUBLE SHOOTINGPOIER CIRCUITSII/IPTO/IiS POSSIBI,E CAUSE TO BE CIIECTGDDoes not light 1) No powerup or function &o Serered- porrer cabre Clreck where cable enters pJug.bn Defective power switch Check contact point.co Fuse blovtrn or no fuse Replace or i-nsert new fuse.inserted2) Fuse blowsE n Power transformer Short between transformer wind_1ngsheat up layer.bo Defective lnsulationin OPT between primaryand- secondary.co Short between electrocle Mainly in rectifier or j-n powerin tubes tubes.d-o Defecti-ve electrolytic Mainly filter circuit.capacitor1) Emit s smokea,o short in heater wi-ring check wiring by removing tubes.bo Defective tube socket Mainly poor insulation of wafer-type socket.tight uF r butdoes not function1) Insufficient platevoltagezo Rectifier tube or d_iodeburned_ out.b. Resister in filter circuit burned. outc No rectifier.2) No voltage at plate circuita, Primary windings of output transformerburned- out.ATIIIO CIRCUITSY1VIPTOMS POSSIBLE CAUSETO BE CIf;CIGIDoes not functioni) Power ampl