Realistic-31_2065B-rec-sm 维修电路原理图.pdf

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1、ruLtstC.SerulceamuaflADDENDUMfor STA-235BAM /FM STEREO RECEIVERGatalog Number:31 -2065This ADDENDUM covers the changes made for B version of the STA-235.For complete coverage of this model, you must refer to both this ADDENDUM and theoriginal Service Manual for the STA-235.cusroM MANUFACTURED FoR RA

2、Dto sHncrA DVtstoN 0F TANDv coRponAloNRadioFans.CN 收音机爱 好者资料库CONTENTS1 . SPECIFICATIONS 22. BLOCK DIAGRAM 33. ALIGNMENT PROCEDURE 44. ALIGNMENT POINTS 55. TROUBLESHOOTTNG . 66. TUNEB BOARD OO42 . .7 - I7, MAIN AMP BOABD OO45 98. TONE AMP & AUTO-M BOARD 0043 . . 109. ELECTRICAL PARTS LIST .11 _ 1810.

3、 M|SCELLANEOUS PARTS L|ST . . 1911. SCHEMATIC DIAGRAM . .SEPARATE SHEET1. SPECIFICATIONSThe specifications of STA-2358 are the same as STA-235 except for output voltage of FMsection.FM SECTION13. OUTPUT VOLTAGE(at 75 kHz dev., 400 Hz mod., 1 mV input)NOMINALLIMITUNITSTA.235STA.235B0.9o.70.913 dB0.71

4、3 dBVVRadioFans.CN 收音机爱 好者资料库2. BLOCK DIAGRAMsl:)Elso-trhGtrht-,IEe r,P3 =E-A9=- x6626EH-ii qPFgSsli9I: - - -?. ,2 n D d ? iln r soe 5 + * + + E e = +3 E EEIrn3E-rrPF3. ALIGNMENT PROCEDUREAM RF AND IF ALIGNMENTNot changedFM RF AND IF ALIGNMENTAdjustment points of Steps 4,5,6 and 7 should be changed.

5、MPX ALIGNMENTFM ANTENNATE RM INAL(300s,)ALIGNMENT CONNECTIONAdjustment points of Steps 1,3 and 4 should be changed.TAPE OUTSTEPADJUSTMENT Refer to Fig. 4STA-235STA.235B4567L203 (Pink core)L203 (Blue core)vR202VR2O1T201 (Bottom)T201 (Top)VR201vR202101. l-102103, L104T101, TC101TC102, TC103TC104FM SIG

6、NALGENERATORFM DUMMYANTENNA300aSTEREOMODULATORSTEPADJUSTMENT Refer to Fig. 4STA-235STA.235B134VR3O2VR301VR3OlVR301VR3O2VR3O244. ALIGNMENT POINTStr. toE: i: a,.,. i ti taieItEotsNeslosloFE6looeeo(lENc,NE6lcllts r:i$N m hN F N m sf $o o c, o o oct o o o o o o o otf st slJ L ts (J (J (-)(.) c.! J J C J

7、 (J F JFig.45. TROUBLESHOOTINGRefer to page 14 and 15 of STA-235 Service Manual.The following items should be changed.SymptomCause and Remedy13) FM does not operate.E) DeleteG) DeleteH) Defective lC 1C201Replace the lC.l) Defective IFT T101 orT2O1Replace the defective components.J) Defective resisto

8、r R2O1, R2O2, R203, R2O4, R205,R206, R208, R209, R213, R219 or R22OReplace the defective resistor(s).K) Defective capacitor C203, C112 or C2O1Replace the defective capacitor(s).L) Defective transistor TR101 ,TR102, TR103 0rcoil L101 , L1O2, L103, L104 of Tuner Boardoo42Replace the defective componen

9、t(s).14l, Poor multiplex separation.B) Transistor TR301, TR302 or 1C301 of TunerBoard 0042 defectiveReplace the defective component(s).15) Stereo indicator does notlight.C) Defective lC lC30l or resistor R321Replace the defective component(s).16) FM volume not sufficient.A) lf volume of both L and R

10、 channels notenough: Front-End defective or faulty lC1C201, 1C301 or capacitor C227, C301 ofTuner Board 0042Locate and replace the defective component(s).B) lf sound of one channel not enough: DefectiveLPF301 or TR301 in case of L channel, ordefective LPF302 or TR302 in case of R channelReplace the

11、defective component(s).TUNER BOARD OO42 (TOP VIEW)TUNER BOARD OO42 (BOTTOM VIEW)MAIN AMP BOARD OOli:*iii*s,i:tiilMAIN AMP BOARD OO4Ilr:a:i.1ltr,iGri:.:,:!r,i1:r:i1r:31u1ii:t,:,r!1,:1.,ir,t,l:rl.r.iitrar1;i:1.r:iilrl:i:ilqa.t:tiltitt:jrlti:e:i!rl!r:!i:lli;alilil;ri,ilrq:.1:i11llii:lljl;ilittLt6rir lr

12、.;, r. i;i tBOARD 0045 (TOP VrEW),$j*i, f$gll:$iOARD OO45 (BOTTOM VIEW)TONE AMP & AUTO-M BOARD O(TONE AMP & AUTO.M BOARD OO412a.,:.c Feo?ba: F905bie820ir BoARD OO43 (TOP VIEW)18 .,:t:,. 7t8902a 820Nilos 6.8(agk 39Xiso& 2rXt9,3OARD OO43 (BOTTOM VIEW) SELECT.RtirB.a:aa.:.10ELECTRICAL PARTS LISTCAPACIT

13、ORSRef. No.Value(F)Voltage(v)Toler-ance%tMaterialc1 01cl 02cl 03cl 04c1 05c1 06c1 07cr 08cl 09cr 10cl1lc112c113c114c1 15c1 16cl17cl 18c119c1 20cl21c122c201c206c210c211c212c213c214c21 5c2r 6c217c21 Ic21 Ic202c203c204c205c207c208c20915P00,22tt0.5P1ql12P3P10P300P0.0,22tt7P(TH)10P24P(UJ)33P10P0.022p33p0

14、.47 p0 9,10P1 000Poo:,ou0.47 p270P,u,10p1p1 000P,i:,lop2550255025502512505025505016502516tl0+80-20tl0t0.25Ptl0t0.5Ptl0tbtl010+80-20+75-10110+75-10+80-20+80-20+50-10+75-10+80-20+50-10+75-10tl0+80-70-UO-r0CeramicElectrolyticCeramicElectrolyticCeramicElectrolyticL,l:I| ,0,r,11Ref. No.Value(F)Voltage(v)

15、Toler-ance%tMaterialc220c221c222c223c224c225c226c227c228c22gc230c301c302c303c304c305c306c307c308c309c31 0c3l 1c312c313c401c402c403c404c405c406c407c408c40gc41 0lp4.7p0.04p0.04p4.7 p0.47p1p0.04p33plop4.7p360P3.3p1.5p0.047 p1 200P,o:699P0.47 p,:0.01rr1op220p0.022p4.7 p,0.04p0.039plop0.022tt50162525q925

16、16502516255025501650502516r025+80-20+75-1,0+80-20+80-20+50-10+75-10+50-10rl0+50-10tl0+75-10+75-10t5+75-10+80-20+50-10+80-20+75-10+80-20tl0+50-10+80-20CeramicElectrolyticCeramicElectrolyticCeramicElectrolyticElectrolyticCeramicElectrolyticPolyesterCeramicElectrolyticCeramicElectrolyticUeramrcElectrol

17、yticueramrcElectrolyticCeramicPolyesterElectrolyticCeramicRef. No.Value(F)Voltage(v)Toler-ance%tMaterialc41 1c412c413c414c41 5c41 6c417c41 Ic419c420c421c422c423C501a,bC502a,bC503a,bc504C505a,bC506a,bc507C508a,bC601a,bC602a,bC603a,bC604a,bC605a,bC606a,bC607a,bC608a,bC609a,bC610a,bC61 I a,bc551c552c55

18、3c554c555c5565P390P0.01s4.7p0.0,22p3.3p1p0.22tt1p22P4.7p47p3.3p120P22p1 00p1 500P5600P1 00p0.47p56P1p,o:10P100p47p0.001p1 00P0.01p0.056rr0.22p0.01p50255016502516501650165025502550352550050500t0.5Pt5+80i?g-10+80-20+75-10t20+75-10tl0+75-10+50-10rl,0+50-10+75-10+75-10tl0+50-10+8010*J0+80-20t10+75-10+50

19、-10tl0+50-10tl0CeramicElectrolyticCeramicElectrolyticCeramicElectrolyticElectrolyticCeramicElectrolyticPolyesterElectrolyticCeramicPolyesterCeramicCeramicElectrolyticCeramicElectrolyticrri,tRef. No.Value(F)Voltage(v)Toler-ance%tMaterialC61 2a,bC61 3a,bC614a,bc701c702c703c704c705C731 a,bC732a,bC733a,

20、bC734a,bC735a,bC736a,bC7 51a,bc801c802c803c804c805c81 0c81 1c8r 2c851c852c853c854c855c856c857c858C901a,bC902a,bC903a,bC904a,bC905a,b0.1r,2P5P0.02tt0.47p1 0rr22p1 00p0.01p0.12p8200P,2.2p0.022tt47p4.7p,i:,lop1 000p0 9,:*0.0047po,u0.47 plop10PNot Used2.2p5050050255016l05025251625505012550050165025tl0r0

21、.5P+80-20+75-10+50-t:,0,):,0+75-I0+80-20+50-10+75-10+50-!:,0+50;18-20+50-10 x20tl0+75-10+50-10tl0+75-10PolyesterCeramicCeramicElectrolyticPolyesterElectrolyticCeramicElectrolyticElectrolyticCeramicElectrolyticPolyesterCeramicElectrolyticCeramicElectrolytic12Ref. No.Value(F)Voltage(v)Toler-ance%tMate

22、rialC906a,bC907a,bC908a,bC909a,bC910a,bC911a,bC9 I 2a,bC913a,bC914a,bC915a,bc91 6cgl 71 80P1 800P3300P6800P0.039p0.033p3300P1p2.2p10P220p330p50255025t10+75-10tl0+50-10CeramicPolyesterElectrolyticCeramicElectrolyticDIODESRef. No.Type No.R/SPart No.Mf rsPart No.ManufacturerD 101D1020201D202D2030204020

23、50206D207D2090301D302D401D60ID602a,bD603a,bD801080208030804D805D806080708080809081 0D8l 1081 2081 308510701D7021 526871524731 N6OPr s2473KB1 62,u,!:,1 N6()PNot Used1 524731 N601 S2473w03cRDllEw03cSTV-3HNot Usedw03c55VB-20rx-0302rx-0299lx-0162rx-0r 62rx-0299lx-0299DX-0685rK0299rx-0299DX-0299DX-0299DX

24、-0299DX-0r 62DX-0299DX-0299D)(0161DX0299DX-0525DX0405DX-0525DX-0525DX-0525DX-0525DX-0525DX.O52EDX-0525DX-044i306005603060041 03060001 13060041 0306005003060041 03060001 13060041 0306000r 03060041 03060087 1306007523060087r306008813060087130600981JRCToyo ElectronicsUNISONToyo ElectronicsUN ISONToyo E

25、lectronicsUN ISONToyo ElectronicsUN ISONToyo ElectronicsHitachiNECHitachiSan kenHitachiShindehgenCERAMIC FILTERSRef. No.DescriptionR/SPart No.Mf rsPart No.cF201cF202cF203cF401FM IFT SFEl().7MA,AM IFT CFT455Bc-0546c-05463530001 235704061COILS & TRANSFORMERSRef. No.DescriptionR/SPart No.Mf rsPart No.L

26、t 01L1 02Ll 03L1 04Ll 051201140114021451L601a,bL80lT1 01T201,t;:u,FM ANT. Coil 129AFM RF Coil 1278 1288FM OSC Coil 1l4LChoke CoilChoke Coil 180JAM RF Coil 122BAM 0SC Coil4l5LAM Bar Antenna CoilChoke Coil 8pH 33pHFM IFT 2(7AFM IFT 221 DPower Transf ormer (U L), (CSA) (Europe/Australia)cA-3865cA.4906c

27、A-4907cA.4565cB-2121c-071 3cA-4753cA-4755cA-0290cB-2299cA-3100cA-7830cA-7831TA-058035501 291355012723550 1 28235501 146355000703550031 035501222355041 56354005r 1355001 70355001 603570207 135702214359002063590021 73590021 IFI LTERSRef. No.DescriptionR/SPart No.MfrsPart No.LPF3()lLPF3()2Low Pass Filt

28、er BL-21Ec-08643500008013INTEGRATED CIRCUITSRef. No.Type No.Part No.Manufactu rerr c201r c30rtc401lC50l a,br c7011A1230HAr 1 96pPC30CNJM4558D.DNJM4558D309003803090041 0309003503090036330900361SanyoHitachiNECJRCJRCRES ISTORSRef. No.Value(,o)Wattage(w)Toler-ance%lMaterialR 101R 102R 103R 104R 105R 106

29、B 107R 108R 109R110R111R112Rll3R114R115R 151R201R202R203R204R205R206R207R208R209R21 0R211R212R21 3R2148215R21 6R217R21 BR21 IR220R221R222R223R224R225R226R227R228R229R230R23 1R232R30rR302R303R304R305R306R307R308R309R? 1n68K150823.3K22K1K12K10K2.7K100560K330K390K1002201K3.3 K5603301039010010K2201801 5

30、0Kr.5K220K180K15K47K1 80K21K180K3.3K2.2K6.8K100K22K100K27K220K10M2.zlti12KNot Used220K1001.8K5.6K22K1K31,*u;l*39K114114114t5+Et5CarbonCarbonCarbonLAMPSRef. No.DescriptionR/SPart No.Mf rsPart No.PLlPL2PL3PL4PL5Dial Lamp 8V 0.3A,t,Meter Lamp 8V 0.254,L-0718x-7338370080413700801 ILIGHT EMITTING DIODESR

31、ef. No.Type No.R/SPart No.Part No.Manu-factu rerB75rD752D753D754D7550756G D.4-203 R D)x-074;8A211-49064AStanleyMETERRef. No.DescriptionR/SPart No.Mf rsPart No.M1TUNING MeterM-031 56020001 IRELAYRef. No.DescriptionR/SPart No.MfrsPart No.R L8()1Relay 264D02404CSR-80838200006014Ref. No.Value(o)Wattage(

32、w)Toler-anceP/1MaterialR31 1R31 2R313R314R31 5R31 6R31 7R31 IR319R320R321R322R401R402R403R404R405R406R407R4088409R41 0R41 1R412R4r 3R414R41 5841 6R41 7R4r IR41 IR420R421R501a,bR502a,bR 503a,bR504a,bR505a,bR506a,bB 507a,bR508R509R510a,bR601a,bR602a,bR603a,bR604a,bB605a,bR606a,bR607a,bR608a,br00K3,;3K

33、220K2.2K3.3K390K2.2K3.3K390K1K1 00K100 K3.9K1.8K2.2K390K68K82K47K10K56010K22KNot Used680K3.3 K3301 00K15K3901.8K2.2K1 00K1 00K1.5K82075047K560K1;9K1 00K270K2.2K220K1;PK33Kl0K2.7K114114114114114t5t5t5t5t5CarbonCarbonCarbonCarbonCarbonNo.Ref.Value(o)Wattage(w)Toler-anceP/lMaterialR609a,bR610a,bR611a,b

34、R61 2a,bR613a,bR614a,bR615a,bB616a,bR61 7a,bR618a,bR61 9a,bB620a,bB621a,bR622a,bR623a,bR624a,bR625a,bR626a,bR627a,bR628a,bR651 a,bR701R702R703R704R705R706R707R708R709R710R71 1R712R71 3R714R71 5R716B7l7R718R71 IB731a,bR732a,bR733a,bR734a,bR735a,bR736a,bR737a,bR738a,bR739a,bR740a,bR741a,bR742a,bR751a.

35、b1 00K3K5.6 K6.8K2.2Kr001K100300100300t51;?K0.4747047K470K19K1 00K680820K2.7K10K2.2K33K12Kt0K330 K1.8K3.3K1.5K470K10K5;9K2.ztrii6.8 K47K4.7K820K47K101022K820114E132114114t5tl0t5t5r5t5t5CarbonWire WoundMetalWire WoundMetalCarbonCarbon15Ref. No.Value(o)Wattage(w)Toler-ance%lMaterialR80tR802R803R804880

36、5R806R807R808R809R81 0R81 1R81 2R813R814B8r 5R81 6R81 7R851R901a,bR902a,bR903a,bR904a,bR905a,bR906a,bR907a,bR908a,bR909a,bR910a,bB911a,bR912a,bR913a,bR9l4a,bR91Sa,bR916a,bR917a,bR918a,bR919a,bR920a,bR921a,bR922a,bR923R92447010K220K27K39K2!,K22027K1.2K2tK1.2K2202.2Kl01.8K2.zvi3.3K820K4.7 K39K6.8K22K3

37、.9KNot Useda:!K6;9KlTK220K1M4.7KNot Used1 00K1001K15K11141114112114114114t5tl0t5t5t5MetalCarbonSolidCarbonCarbonMetalCarbonCarbonSWITCHESRef. No.DescriptionH/SPart No.Mf rsPart No.SIs2S3s4S5S6s7S8s9sl0s11sl2POWER/SPEAKERSSE LECTO HTAPE MONITOR 1,r2FM 25pSMONOLOUDNESSFI LTE R_H IFI LTER_LOAUTO-MPHONO

38、 LEVELThermal Protector (UL), (CSA)s-0839s-0781s-0782s-0783s-223rHB-5r 1627 1 001 3827100137272000882720008927300008307001 90307001 60THERMISTORRef. No.DescriptionR/SPart No.MfrsPart No.TH201sDT-1 0003070020016TRANSISTORSRef. No.Type No.Part No.ManufacturerSubstituteType No.ManufacturerTRlOITR 102TR

39、 103TR20lTR2(2TR2()3TB2()4TR205TR3OlTR3O2TR4OlTR402TR4O3TR4O4TR601a,bTR602a,bTR603a,bTR604a,bTR60Sa,bTR606a,bTR607a,bTR608a,bTR609a,bTR61Oa,bTR70lTR702TH801TR8(2TR803TR8()4TR805TR806TR8()7TR8()8T R901a,bTR902a,bTR903a,b3SK45 (B or C)25C 1 67425C1 675( L)25C930(D)25C536(F)2SA733 (P or 0)2SC536 (F)25K

40、44 (B or C)25C536(F)2SA841 (BL)2SC1 95121C1567(R)2SC945( L-P)2SA733(0 or P)2SA794(R)2SD426(0)25C20212SD+,71(K or l)2SD43B(E or F)2SCg,45(L.P)258560(E or F)2SA733(0 or P)2SC945( L-P)250438(E or F)250330(E)25Ct681 (BL)2SA841(BL)2SC1681(BL)3040007130201 1 1 13020112130200211302001 3130000425302001 3 13

41、04001 0330200 1 3 13000042230201 26130201 02330201 031300004233000041 33030029130201 323303002803030025030200522301 0004130000423302005223030025030300r 923020 1 1 323000044230201 132HitachiNECNECSanyoSanyoNECSanyoSanyoSanyoToshibaSONYMatsushitaN-ECMatsushitaSonyToyo ElectronicsN-ECSanyoN-ECSanyoN-EC

42、SanyoSanyoToshiba35K41 (Korl)25C945( L-P)25C945 (L-P)2SC945( L-P),:,254640(E)25C1124(2125C536(F)2SA706(2)25C1 509( R)2SC536(F)2SA777 ( R )25C536(F)25C1 509(R)2SC1 061 (B)2SC1222lEl25A640(E)2SC1222lElNECN-ECNECNECNECMatsushitaSanyoMatsushitaSanyoMatsushitaHitachiN-ECSonySanyoSony17VARIABLE CAPACITORS

43、Ref. No.DescriptionR/SPart No.Mf rsPart No.vcl 01TCl 04Tuning Gang G774J1 18(lncludes TC1 01 -TCl 03,TC105-TC107TrimmerECV.1ZW1()P32c-451 6c- 0424263700812601 0023Ref. No.DescriptionR/SPart No.Mf rsPart No.VR4(1VR4()2V R601a,bV R901a,bV R902a,bV R903a,bV R951-1aVR951-2avR951-t bv R951-2bWIDE-BAND AM

44、Sensitivity 10ko/BAM 0utput LevelControl 50ko/BBias Control 1kQ/BTREBLE lO()KO/BMrD 100ko/BBASS l ()()KO/BV0 LUME-L channel200ko/BV0 LUME-L channel200ko/BV0LUME-R channel200ks/BV0LUME-R channel200ko/BP-6367P-6369P-6247P-5006P-1699281 00061281 00096281 00037280001 3028200020VARIABLE RESISTORSRef. No.

45、DescriptionR/SPart No.Mf rsPart No.VR2()1vR202VR30lVR3O2Auto Stereo & MutingSensitivity 100ko/BFM Signal MeterSensitivity 100kSl/B76kHz FrequencyAdjust 10k0/BMPX Separation100ko/BP-6368P-6368P-6367P-6368281 00063281 00063281 0006128r 00063COMPLETE PCB ASSEMBLIESRef. No.DescriptionR/S Part No.Mfrs Pa

46、rt No.50300042004300456044803071267127EO AMP BOARDTUNEB BOARDTONE AMP & AUTO-M BOARDMAIN AMP BOARDAUDIO DRIVER AMP BOARDPOWER SUPPLY BOARDLED INDICATOR BOARDMETER LAMP BOARDx-7609x-7608x-7611x-7610 x-7614x-7612x-7248x-73389750301 09700424097004320970045409760441 097803020977126109771271018Ref.No.Des

47、criptionR/SPart No.Mf rsPart No.1234567II10111213141518t9202122 Inl24125 I26 I27 I28 I2930313233343536373839404142434445464748Wire Wrap Pin 13mm, l9mmJumper Wire JPW-03, JPW.O2P.C-8. Connector Socket 5P9PHeat SinkP.C. Board BracketThermal Protector Ul2 90CThermal Protector BracketP.C.B. Connector Pl

48、ug 9PBack Panel12P RCA JackFuseholder FH002 (UL)AC 0utlet lR02 (UL)Bar Antenna ClamperFuse ST-2 4A 125V (UL)4P Screw Terminal10P Speaker TerminalAC Cord Strain ReliefSR4P.4Cord Strain Relief SR4K-4AC Cord with PlugPhono Ground TerminalLine Cord AntennaLine Cord Antenna FiberDial ScaleDial Shaft Asse

49、mblyTuning MeterPulley Shaft EPlastic PulleyFiber WasherFiber lnsulator for DialShaftPhone JackMeter Filter (Red)Plastic RivetWire Bundler 150 110, 8DMetal Bracket for PowerTransformerAngle Bracket for PulleyDial DrumSpring Coil for Dial DrumTerminal Strip l Pl Ll PPulley Shaft GMetal Bracket for Wo

50、odenCabinetDial PointerMylar Sheet for Dial PointerH B-51 23H B-5124D-0365R 8-5691J-4438D-3244D-1 193H B-5127RT-1 1 94HB-0955 IHB-0e45 IIIJ-6435 IJ-6436 |HH-0255 |HB-511s IH B-51 16 IHB-5117 |J-6530 Iz-3851 IJ-0721 IF-l017 IJ-6438 |HB-7157 IIHF-l087 IJ-4533 IJ-4430H B-0954HB-3212w-1460H B-0953H-3533