Realistic-STA730-rec-sm 维修电路原理图.pdf

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1、CUSIIM MANUFACTURED FtR RADII SHACK,A DIVISION OF IANDY CORPORATIONRadioFans.CN 收音机爱 好者资料库CONTENTS1.2.3.4.5.6.7.B.9.10.11.12.13.14.15.16.17.18.BLOCK DIAGRAMDISASSEMBLY I NSTRUCTIONSDIAL STRINGING DIAGRAM . .ALIGNMENT PROCEDURESALIGNMENT POINTS .LEVEL DIAGRAM26-3&45667 -91011TROUBLESHOOTTNG 12 - 17OO

2、94A, B TUNER, PRE-AMP & VOLUME BOARD 18 & 1961004 MAIN AMP BOARD 20&2161OOB FLUORESCENT IND BOARD61OOC, D, E, F HEADPHONE JACK, SIGNALLED, LINE TO CHASSISRESISTOR & POWER IND. LED BOARDSEMICONDUCTOR LEAD IDENTIFICATIONIC EOUIVALENT CIRCUITELECTRICAL PARTS LISTMISCELLANEOUS PARTS LISTSCHEMATIC DIAGRA

3、M. SEPARATE SHEETEXPLODED VIEW .SEPARATE SHEET222324253435vRadioFans.CN 收音机爱 好者资料库SPECIFICATIONSNOM I NALLIM ITUNITFM SECTION1, FREOUENCY COVERAGE2. FREOUENCY READOUT ACCURACY3.4.5.6.7.8.9.10.11.12.13.90 MHz98 MHz106 MHzUSABLE SENSITIVITY(NOTSE & DTSTORTTON -30 dB)IMAGE REJECTION (at 106 MHz)lF REJE

4、CTION (at 90 MHz)FULL LIMITING (at -3 dB)lF BANDWIDTH (6 dB down)DISTORTION (1 mV INPUT)SIGNAL-TO-NOISE RATIO (1 mV INPUT)DE-EMPHASIS (at 50- 10000 Hz)DISCRIMI NATOR BANDWI DTH (Peak-to-Peak)AFC HOLDING RANGE (with 1 mV signal)OUTPUT VOLTAGE MONO(at 75 kHz dev., 4OO Hz mod., 1 mV input) STE R EOMUTI

5、NG THRESHOLDOVERLOAD (THD at 98 MHz, 100% mod.)100 mV RF INPUTSPURIOUS RESPONSE at 98 MHzANTENNA INPUT 3 pV, 1 12 tF , 103.35 MHzCAPTURE RATIO (1 mV INPUT)ALTERNATE CHANNE L SE LECTI VITY(100 pV INPUT)50 dB OUIETING SENSITIVITY at 98 MHz16.14.15.17.18.19.100 Hz1 kHz10 kHz1 kHzMPX SECTION1. STEREO SE

6、PARATION(1OO% mod., 1 mV input,with Low Pass Filter)2, DISTORTIONllOOYo mod., 1 mV input)3. STEREO BEACON SENSITIVITY (pilot 8%)4. RESIDUAL 19 kHz & 38 kHz (1 mV input)5. SUPPRESSION OF SCA INTERFERENCE(1 mV input)AM SECTION1, FREOUENCY COVERAGE2, FREOUENCY READOUT ACCURACY3. USABLE SENSITIVITY 600

7、kHz, 1000 kHz,(4OO H2,30% mod.,noise & distortion -20 dB)4. IMAGE REJECTION (rt 1,400 kHz)5. lF REJECTION (at 600 kHz)6. AGC FIGURE OF MERIT(from 100 mV/m at 1,000 kHz)7. DISTORTION(4OO H2,30% mod., 5 mV/m input)8. lF BANDWIDTH (6 dB down)600 kHz1,000 kHz1,400 kHz1400 kHzRadiatedTerminal87.4-109*t50

8、t50r501.79.855BO1.20.1 570t1.5400t12OOo.750.760.3801.0553.016.1510-166040453B0.3B40320254835400.888-108t 100t 100r 1002.412.850701.811500.565t2300tB000.75t3 dB0.7t3 dB4-100.8702.5456.020.82832250.85-123040520-1620t15t20t402.O6-1460040402835MHzkHzkHzkHzpVdBfdBdBpVkHzo/odBdBkHzkHzpVo/odBdBdBdBdBdBo/ok

9、HzkHzkHzkHzpY lmpVdBdBdBo/okHzpVdBfpVdBdBNOMINALLIMITUNIT9. OUTPUT VOLTAGE(400 Hz, 30% mod., 5 mV/m input)10. AUDIO RESPONSE(5 mV/m input from 50 Hz to 2.3 kHz, 0 dB 1,000 kHz)11. SELECTIVITY 200 pVlm12. SIGNAL-TO-NOISE RATIO(1,000 kHz, with antenna input 10 mV/m)13. AM BEAT 1 - 50 mV/m50 - 100 mV/m

10、AUDIO SECTION1, RMS OUTPUT POWER(distortion 1O.15o/o,20 Hz - 20 kHzlBOTH CHANNELS DRIVEN B s2. IM DISTORTION(at 20 W output 7Ol7,OOO Hz 411l3. HARMONIC DISTORTION (at20 W output) 20 Hz1,000 Hz20,000 Hz4. FREOUENCY RESPONSE +1, _1.5d8(AUX, 8 O load, 1 W output)5. INPUT SENSITIVITY (for 27 W output)6.

11、 INPUT IMPEDANCE7, TONE CONTROLTAPE MONBASS 100 HzTREBLE 10 kHz8. EOUALIZATION RIAA: 30 - 15,000 Hz9. PHONO AMP OVERLOAD CAPABTLITY (at O.2yo)10. LOUDNESS COMPENSATION (volume -30 dB) 10 kHz100 kHz11, CHANNEL SEPARATION(AUX input 100 - 10,000 Hz)12. SIGNAL-TO-NOISE RATIO (input shorted)10 mV input,

12、IHF-A PHONOAUX13. RESIDUAL NOISE14, LOAD IMPEDANCE15. POWER SOURCE120 Volts, 60 Hz AC*21 WATTS, No Signal130 WATTS, Full Sisnal (27 WATTS, I st,BOTH CHANNELS)PHONOAUXTAPE MONPHONEAUX250-43250300.03o.o2o.o20.031 5-25K2.516016050K50K50Kt10t10140+4+7458192o.7200-625401015270.080.050.050.0820-20K2.5t0.3

13、160t30160t30t1O!2!10t2RIAAt2110+4t2+7!24076851.54-16mVdBdBdBo/oo/oWo/o%o,/oo/oHzmVmVmVohmohmohmdBdBdBmVdBdBdBdBdBmVohm* 22O/24O VAC, 50 Hz for European and Australian Models.* European models must not be able to tune to below 87.5 MHz.NOTE: Nominal Specs represent the design specs; all units should

14、be able to approximate these-somewill exceed and some may drop slightly below these specs. Limit Specs represent the absoluteworst condition which still might be considered acceptable; in no case should a unit performto less than within any Limit Spec.BLOCK DIAGRAMsullvlassullvldsoookt +?+t +Lt-T-l.

15、 !E. EE= 9=o 9;u= i3-oeEbEEe 3 =?=E-Fg Ei-o-=:=taa=B=a=5=iAPtrFis:1.2.DISASSEM BLY I NSTRUCTIONSTo remove chassis from metal enclosureRemove five screws (#67 & #68) from sides and back.To remove the Front PanelPull off the tuning knob.Remove six screws (#15 & #66) from top and bottom of the Front Pa

16、nel then remove the Front panel.(Refer to Miscellaneous Parts List for descriptions of numbered parts.)(GnL%1-re,DIAL STRINGING DIAGRAMNote: Tuning capacitor should be in fully closed position.DIAL DHAMSPRING FOR DIAL RAM4(7,r /-:(t1-/=PLAS TIC PULLEYALIGNMENT PROCEDURESDo not attempt alignment unle

17、ss1. AM Signal Generator2. Oscilloscope3. AC VoltmeterNote: Remove line cord antennathe following equipment is available.4. FM Signal Generator 7. Distortion Meter5. Stereo Modulator6. Audio GeneratorB. DC Voltmeter9. Frequency Counterfrom FM external antenna terminal when aligning.AM IF & RF ALIGNM

18、ENTOutput of signal generator should be no higher than necessary to obtain an output reading.Signal Generator Modulation: 30%Press the AM button.STEPSIGNALGENERATORCOUPLI NGSIGNALGENERATORFREOUENCYRECEIVERDIALSETTINGINDICATORADJUSTMENTRefer Fig. 4REMARKS1Refer Fig. 1455 kHz(400 Hz Mod.)Point of non-

19、interference(onlabout600 kHz)AC Voltmeterto TAPE OUTjackT203 (tFT)Adjust for maxi-mum reading.2Same as Step 1600 kHz(400 Hz Mod.)600 kHzSame as Step 1L20i (OSC Coil)L251 (ANT Coil)Same as Step 13Same as Step 11400 kHz(400 Hz Mod.)1400 kHzSame as Step 1TC2O2(OSC Trimmer)rc201(ANT Trimmer)Same as Step

20、 14Same as Step 11 000 kHz(400 Hz Mod.)Tune for maxi-mum reading onSIGNAL indi-cator LED withweak signalFront PanelFrequencyReadoutVR4O1Adjust for 1000kHz reading onFrequencyReadoutNote: Remove line cord antenna from FM external antenna terminal when aligning.l)18vooro+ oroFUJzaJfl,d*5Hvoors+ o-L0Nn

21、0u9 01voors+ orJ!Eozl9,1AY.oYZO-,-E- lJJ,3zooo-IonEeTE.fr,itr=.ofrIHi-lboEFUFJooF23SEMICONDUCTOR LEAD IDENTIFICATIONILlE-l_EreI t5-t!tt-.-I lK_ti tK-Ll 1F-N-.I-: E|tr,I EIEII EIEit tH ttrHI EIE E=ilElFEEl ElEnII EIE:l t lm,:l E |tr,-il,z-Lt- LFfl-lE-rE:l E lrr: E Ilrl_: EIEul I lrr=ll-elE tk-rll-Th-

22、 rF-: Hltr-I t tf:I EIE-;ll*18 tE3aE24IC EOUIVALENT CIRCUIT=-JE25ELECTRICAL PARTS LISTCAPACITORSRef.No.Value(F)R/SPart No.Voltage(v)Toler.ancel%lMaterialc1 01cl 02cl 03c1 04c 105c 106c1 07cl 08c 109c110cl1 1cl12c113c114cl 15cr 16c117cl 18c1 19c1 20c20lc202c203c204c205c206c207c208c209c210c211c212c213

23、c214c215c21 6c21715p (SH)0.022p1BP (SH)0.01p1P (CH)220P10P (CH)0.01p0.022p0.02ht0.047p1 5P (UJ)33p (uJ)1op (uJ)15p (UJ)12p (sH)0.01rr15p (TH)47P0.47p0.01p0.01p33s0.022tt0.022p4.7 tt220p0.47 tt0.022tt0.022ttA.022tt0.01p0.047p1tt0.047tt1op0.022pcF-7281cc223ZFCPcF-1226CCl03KJCPcF-7377cF-1 490cF-1 902CC

24、l 03 KJCPcc223ZFCPcc223ZFCPcc473ZFCPcF-1814cF-7287cF-1 946c F-1 814cF-7378CCl()3ZFCPcF-1 836c F-1 336CC474MJAPccl 032 F cPccl03zFcPCC336MBAPcc223ZFCPcc223ZFCPCC475MJAPcF-1 490CC474MJAPcc223ZFCPcc223ZFCPcc223ZFCPccr 03zF cPcc473ZF CPCCl 05MJAPcc473ZFCPCCl 06MDAPcc223ZFCP502550255050502525252550505050

25、502550505025256.32525505050252525252550251625tl0+8O-20tl0+80-20tl0tl0tl0+80-20+8O-20+80-20+80-20tl0tl0tl0tl0tl0+80-20tl0tl0!20+80-20+80-20t20+80-20+80-20*20tl0t20+80-20+80-20+80-20+80-20+aO-20t,20+80-20 x20+80-20CeramicCeramicCeramicCeramicCeramicCeramicCeramicCeramicCeramicCeramicCeramicCeramicCera

26、micCeramicCeramicCeramicCeramicCeramicCeramicElectrolyticCeramicCeramicElectrolyticCeramicCeramicElectrolyticCeramicElectrolyticCeramicCeramicCeramicCeramicCeramicElectrolyticCeramicElectrolyticCeramicRef.No.Value(F)R/SPart No.Voltaqe(v)Toler-ancelo/rlMaterialc218c219c220c221c222c223c230c231c232c233

27、c234c235c236c237c238c239c240c241c242c243c244c245c246c247c248c24gc250c251c252c253c254c255c256c30rc302c303c304c305-c306Not Usedlop0.47 tt0.022ttNot UsedNot Used10rr0.01p0.047p0.01pNot Used0.01p68p0.01p47p0.01a0.01p0.047 p4.7 p1p1 000p2200p0.022:p0.047p0.01p3900P1 00p0.0221tlop0.047 p8p1p5P330plNot Use

28、dI110Ill10pl33pI zzoopCCl 06MDAPICC474MJAP Iccz2szFcPlCCl ()6MDAPCClO3ZFCPcc473ZFCPCCl03KJCPcF-1959ccr03zFcPcF-1366ccl03zFcPccl03zFcPcc473ZFCPCC475MJAPCC1 ()SMJAPccl 02KJcPcc223ZFCPcc47sZFCPCCl()3JJHPCC392JJMPCC1 OTMDAPcc223ZFCPCC1 06M DAPcc473ZFCPcF-l126CCl 05MJAPcc337MCCI ()6MDAPCCl06MDAPcF-l31 5C

29、C222JJMPDAP16502516252550505025502525255050252525255050162516255050501616165050 x2Ar20+80-20-20+80-20+80-20t10t10tl0+80-24tl0+80-20+80-20+80-20t20t20tl0t10+80-20+80-20t5tbr20+80-20!20+80-20r10!20r0.5P!20r20tZ0tt0r5ElectrolyticElectrolyticCeramicElectrolyticCeramicCeramicCeramicCeramicCeramicCeramicC

30、eramicCeramicLc.r,ni.lcr,rri.lrtectrotvticlElectrolVticlCeramiclcr,ri,lc*uri.ttLeram rc1r0,r,.lPolVesterlElectrolyticlc.rrri.lrtectrotyticlcerumicttLeramlcIlElectrolVticlueramrcIlElectrolyticIlElectrolyticlrtectrotvtlclCeramiclro,r,u,.*C306: 1200p for Europe/Australia26Ref.No.Value(F)R/SPart No.Volt

31、age(v)Toler-ance%tMaterialt307 Ic308 |c30s IIc310 |c311 ic312c313c314c31 5c316c31 7c31 8c319c320c321c401c402c403c404c405c406c407c408c409c41 0c411c412c413C501a,bI C502a,bI C503a,bI C504a,bI C505a,hI csoou,oI csozI tuotLuo,Iru,I ,u,u,2200P470p1.5p.3.3p0.22p560p0.0475600P5600P6800p6800p680p680p0.1 5p0.

32、1 5p1 000p1 000plo or,I 33elrroll oplo.o+2,lNot Usedlo o,u10.047s10.022p1,10.022pIt,I t 800nlr.r,| 1 800p ezoo,l22u10.01p10.01p10.01Il10.01plroopCC222JJMPCC47 lJJSPcc56r KJCPCC473KJMPCC562KJMPCC562 KJ MPCC682KJMPCC682KJMPcc681 KJCPCC6B1 KJCPcc1 02 KJ CPcc1 02KJCPcc103zFcPcF-1315cF-1315CC1 06MDAPcc47

33、3ZFCPCCl()3ZFCPcc473ZFCPcc223ZFCPlrrou*ro,1,Ilccr osNLaplrr,rr*,r,IICC22SMJAPIIlccs22iJMPIlccl03zFcPlccl03zFcPlr,orrr*lr,orrr*|,r,o,*,5050505050505050505050505050505050252525162525252550505050505050102525252550t5r5t20 x20r.20tl0110tl0t10t10t10t10tl0t20t20rl0tl0+80-20tl0t10 x20+80-20+80-20+80-20+80-2

34、0t20+80-20t20t10-.20tbt5t20+8O-24+80-20+80-20+80-20t10PolyesterPolystyreneElectrolyticElectrolyticElectrolyticCeramicPolyesterPolyesterPolyesterPolyesterPolyesterCeramicCeramicElectrolyticElectrolyticCeramicCeramicCeramicCeramicCeramicElectrolyticCeramiclc.,rri.lcr,.rri.IlCeramiclElectrolvticCeramic

35、IIlElectrolVticlCeram iclrtectrotyticlPotrrr,r,I potr.r,r,lElectrolyticlc.rrricIlCeramiclCeramictIreramrclCeramicRef.No.Value(F)R/SPart No.Voltage(v)Toler-ance(%lMaterialc512 |c513 |-C51 5a,blC601a,blC602a,blC603a,blc604 IC605a,blC606a,blC607a,blC608a,blC609a,blCO 1 0a,blC61 1a,bC612a,bc613c614C6 1

36、5a,bC616a,bC617a,bI c618a,bI C619a,bI C620a,bl*urrr,ol*orsu,olcro,u,oI C702a,bI cso,I rro,I*0,I rrooLrouI rrouL,0,L,otl*onLoI rt,t,I*,l*,068p68p1pl1pl100p INot Used INrot useu INot Used II0.47tt I1 00plop1p1 00p33s.r0.022rt1tt47 tt0.1pNot Used220tt10p47p1tt1 000p1 000p120p10.068pIl0.otrl0.0tr14700ul

37、a700uIt00rI 1opr10.01pl0.0tu10.01pIt,l47plNot Usedlruot useulo.o,uCCl OSMJAPCCI 05MJAPcc101 KJCPCC474MJAPCCl O1 KJCPct-1177CC(l OMJCPCCl 01 KJCPCC336MBAPcc223ZFCPcc680JJ CPcc68oJJCPCCl ()SMJAPCC476MBAPCC 1 ()4KJMPCC227MGAPCCl ()6MDAPlrrorrrro,Ilccl0sMJAPtccl02KJcPlr, o,*,r,|,r, o,r,MPl03KUCPcl 03 KU

38、 CPC478MHAIcc478MHAtCCl()TMFAFcc106MDAtCCl ()3ZFCPCClO3ZFCPccl 03zF cPCCI 05MJAPCC476MBAICCl03KUCF50505050505050501625505050635035166.35050505050500500404025I62525255016500vt20t20tl0t20110t10t20tl0r20+80-20r515!20t20110 x20!20r20!20110t10tl0110110t10+50-10+50-1 0!20!20+80-20+80-20+80-20!20t20tl0IEle

39、ctrolyticElectrolyticCeramicElectrolytic ICeramic ICeramic ICeramic ICeramic IElectrolyticCeramicCeramicCeramicElectrolyticElectrolyticPolyesterElectrolyticElectrolyticElectrolyticlElectrolyticlceramtclCeramiclc*u*i,lPolyesterlceramiclCeramiclElectrolyticlEtectrotyticlElectrolvticlElectrolytictl:u*:

40、ttLeram rclcr,rri.lrtectrotyticlEtectrotyticIIlCeramic* C5 1 5a,b, C622a,b, C623a,b f or Eu ropean/Australian modelsonlv.27*C307: 1200p for Europe/AustraliaRef.No.Value(F)R/SPart No.Voltage(v)Toler-ance%lMaterialc81 5C901 a,bC902a,bC903a,bC904a,bC905a,bC906a,bC907a,bC908a,bC909a,brc910*c91 10.01p1pN

41、ot UsedNot Usedlop1.5p1 80p4700p0.047p0.047p1 000p1 000pccl 03 KU CPcc1 05MiAPCCl 06M DAFCCl 55MJAPccl 81 KJCPCC472JJMPCC473JJMPCC473JJMPccl 02KJCPccl02KJCP500v501650505050505050t10t20t,20t,20tI0tbt5+$110tl0CeramicElectrolyticElectrolyticElectrolyticCeramicPolyesterPolyesterPolyesterCeramicCeramicCE

42、RAMIC FILTERSRef. No.DescriptionR/SPart No.Mf rsPart No.CF2O1cF202CF203FM 1O.7M.BZFM 10.7M-82AM SFZ.455BcA2696cA-2696c-0869353000303530003035300023COILS & TRANSFORMERSRef. No.DescriptionR/SPart No.MfrsPart No.Ll 01L1 02L1 03L1 041601 a,bT1 01T201r202T203T204T85 1TB5 1T851T851L201L251FM Ant. Coil 133

43、AFM RF Coil 1408FM OSC Coit 122LChoke Coil 2.2pHAM 0SC Coil4l9LAM Bar Ant. CoilChoke Coil 1.5pHFM IFT 2()9AFM DET Coil 234.DFM DET Coil 235DAM IFT4()TAAM IFT 4()7BPower Transf ormer ( USA)Power Transf ormer (CanadaPower Transf ormer (EuropePower Transformer(Australia)cA-8078cA-8079cA-5345cB-2482cA-8

44、432cA-8080cA-8062cA-8071cA-7834cA-7835TA-r02735s0 1 33 13550 1 40235501 22635129228355041 963540082 1351990163570209 13070234430702354357040713070401235900421359004223590042335900424CRYSTALRef. No.Descripti onR/SPart No.Mf rsPart No.X R4()1X-tal 4MHz HC-1BVMX-23803520000 rDIODESRef. No.Type No.R/SPa

45、rt No.MfrsPart No.Manufac-tu rerD301D302D40lD402D403 -rD404 ID405 I0406 ID407-lD 101D 102D201D202D203D204D205D206D601D602a,bD603D604DBOlDBO2D803D804D805D806D851RDl 1 EB21 S2687K8162Not Used1 N41481 N41481 N4148SLP-2518SLP-1518RD5.I E821 N41 481 N4148SLP.152B(Five Gang)RD5.6E82I N414803P05M1 N4148DBA

46、.4()BR D5.6 EB2RD9.1EB2RD15E82RD7.5E821 N41 48SLPl44BDX-1606DX-r 950DX-0685DX-0022DX-0022DX-0022L-1 268L-1 146DX-1951DX-0022DX-0022L-1145DX-r381DX-0022DX-1952DX-0022DX-1381DX-1346DX-1535DX-r435DX-0022L-1 1 08306021 2130600560306005003060 1 69 13060 1 69 13060 1 69 r881 1 000588 r 1 00043060205 13060

47、 1 69 13060 1 69 1881 50003306020613060 1 69 1205070001 00030601 69 13060225 13060206 1306021 01306021413060208 13060 1 69 1BB1 1 001 INECJRCU N IZONROHMROHMRO HMSanyoSanyoNECROHMRO HMSanyoNECROHMROHMSanyoNECNECNECNECROHMSanyoFLUORESCENT INDIGATOR PANELRef. No.DescriptionR/SPart No.Mf rsPart No.F L4

48、O1FI P7383L-1 51 38820000728INTEGRATED CIRCUITSRef .No.Type No.R/S Part No.Mfrs Part No.Manufactu rerSu bstituteType No.Manuf actu rerr c2011c202rc301I C4011c402r c403I C501 a,bHA112251A1240pPC1161C3M54459 L1C7258LB 1 405NJM4558DDMX-4715MX-4367MX-5427MX-5426MX-5428MX 3836MX-5304309007203090046030901

49、 2302054330002052054400002063090053030900363HitachiSanyoNECMitsubishiSanyoSanyoJRCAN6552 FMatsushita29P.C.B. ASSEMBLIESRef. No| ,rrrriptionR/SPart No.MfrsPart No0094A009486100A6100861 00c6100D6100E61 00FTuner & Pre-Amp BoardVolume BoardMain Amp. BoardFluorescent lndicatorBoardHeadphone Jack BoardSIG

50、NAL LED BOARDLine-to-Chassis ResistorBoardPOWER lndicator LEDBoardx-9447x-9448x-9452x-9449x-9450 x-945197009420A97009420 B976 1 0020A9761012089761 0020C9761 0020D9761 0020E9761 0020FRESISTORSRef.No.Value(ohm)R/SPart No.u1/attage(w)Toler-ance(%lMaterialR101R 102R 103R 104R 105R 106R 107R 108R 109R110