Nikko-NT850-tun-sm 电路图维修手册.pdf

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1、AM/FMSTEREOTUNER NT-SSC ._., 1111 TYPEANDVOLTAGE W-TVPE 120VAC ULandCSAtype ETYPE NKstandardtype 2201240V AC N -TYPE DEMKOandSEMKOtype NIKKO RadioFans.CN 收音机爱好者资料库 II RadioFans.CN 收音机爱好者资料库 9 11 NIKKO NT-B!IO 81 / a0 . 2 o (W-TYPE) (W-TYPE) 1.POWER SWITCH 2.OUTPUTLEVELCONTROL 3.IFBANDSWITCH 4.HI-B

2、LENDSWITCH 5.MULTlPATHSWITCH 6.MUTING SWITCH 7.TUNINGKNOB 8.SELECTOR SWITCH 9.TUNINGMETER 10.SIGNALSTRENGTH METER 11.STEREO INDICATOR 12.ANTENNATERMINALS 13.AMLOQPSTICKANTENNA 14.DE-EMPHASIS SWITCH 15.MULTIPATHTERMINALS (OSCilLOSCOPE JACKS) 16.OUTPUTTERMINALS 17.AC POWER SUPPLYCORD III RadioFans.CN

3、收音机爱好者资料库 .8thrul1 .11 12thru16 IV 1. 2. 3. 4. 5. 6. 7. 8. 9. CONTENTS SPECiFiCATIONS, DISASSEMBLY.,.,.,.2 SCHEMATICDIAGRAM3,4 TUNERCIRCUITBOARD (BOTTOM VIEWI5,6 PARTS LOCATION,.,.7 PARTS LIST.,. DIALCORDINSTALLATION.,.,. ALIGNMENT.,.,. SEMICONDUCTORDATA TRANSISTORS .17 FIELD EFFECT TRANSISTORS.,7

4、DIODES,LEOS.7 ZENER DIODES.17 INTEGRATED CiRCUiTS18,19 SPECIFICATIONS NOM.LIMITNOM. LIMIT UNIT(NOR.)(NOR.)(NARROW)(NARROW) FMTUNERSECTION UsableSensitivity.dBf(pV).9.31 (1.6).15.3 (3.2).9.31 (1.6) .15.3 (3.2) 50dB Quieting Sensitivity.dBf(pV).11.2 (2.0) .20.2 15.6).11.212.0) .20.2 (5.6) Hum and Nois

5、eMONOdB65dBf.70657065 STEREO.dB65dBf.706570 .65 T.H.DistonionMONO . 0.08.0.30.1 . 0.5 STEREO(L-R) . 0.120.30.2. . 0.5 Capture Ratio. dBl.5.32.4 Alternate Channel Selectivity.dB60.5080.70 SpuriousResponseRatiodB10080100.80 ImageResponseRatio(98 MHz) AM Suppression Ratio. 857085.70 60.4065.40 IFRespon

6、seRatio(98 MHz) dB. dB dB. 80.70.80.70 (1kHz)STEREOdB55.4045 Separation(100 Hz) STEREOdB45.35.35.25 .30 (10 kHz)STEREOdB40.,3030.20 MHz87.4-109.87.9-108.587.4-109 STEREOdB22225 . FM Receiving Frequency. Volts . . .10.8 .1.O.B 87.9-108.5 225 .50 4.50.5 22 65 4.5. .50. 4.5.4.50.3. dB65STEREO.Subcarrie

7、r Product Ratio Separation. HiBlend (1kHz) Meter Sensitivity65dBf OutputLevel Antenna Impedance.300 ohms balanced ,L g.2)oH 2J;.;: 0 R.6 6il_1 C20 . EI /0 F B.RUT 20020 120VONLYW-HPE ,-elo-,- I.022 Ir-, iF.EFD62:IU2SC7tlJ I!.,;ktLcb,:;,: I Iittr!,hmumf.,ht; IILM,!om:);illUill;J;1Ii,j, I!,o.100i ,Ia.

8、on22.I l I L-:-.:=-:.:2:.-:-.,IPcc0!I2: ,:I:-AI : 13UC.flCO,eI I,I:il( 1210420III I +:j:=q:6;:;710I rr.!.:p,n : 1,.lrfI_:_:JIJ I 00 1., r!f ,. 71.Il :lI U C310,311 1010/16 ;LI 00 . C14! 61,l , - 00; f r1 , l7.1ll7.7Vl ,r );,1 , ., l 0 ,. ., . I , 0 l 0, , g ; , i , o ce03 10010/16 , , -I I , Iq= L_

9、POWER FM DE_EMPHASIS 6ANO MUTING MULTIPATH HI-BLEND SELECTOR 52.- b 53._b S4._b Sr._b SlI._b S7._0 . 0 00: ,oJ,iXZ-H . i!. , , ., OHS,UNLSSOTHAWISESPECIFIEO; I.RESISTANCE VA,AUES ARE(IO.S, K1,000.,000,000 2CAPACITANCEVALUES1 0ANDABOVE AREINofORpFIPof,FI.LESS THAN1.0ARE INf ELECTAOlHieCAPACITANCEVALU

10、ES ARE INuf/WV1MFI J.I,INDICATESVOLTAGES MEASUREO WITHNOSIGNAL APPLIED. CIRCUITANDSPECIICATIONSAREsue JECT TO CHANGE WITHOUTNOTICE_ 34 jI n ,0 o I-H. 60060 i:IS11 :i. . , , o , o , ., _._._._._._._._J 0 ., ; , , 03OSailINGMUlTllATHlll-kL/IDI_ SWlTCflSWlTOlSWlreM_TeM 5 !l , 0 )34 ! , . . . I:, 5 6 TU

11、NERCIRCUITBOARD(BOTTOMVIEW)(W-TYPE) r. SELECTCIll SWITCH ,1 IoIlJTlOMULTlPATHHI-BlNDIfUNO SwITCSWITCHSW,TCHO,TCH 5 PARTS LOCATION OJ . .-.,: I Photo 4 Photo 6 . 226259 Photo7 PARTSLIST TheKEY NUMBER I , Imkedwith.I*lonp.n,Iii!.I.to numbefOolth,.dgiuwith.(0)(Photo1 -81 Numbe,.l,inIii.indic.t.theQu.nl

12、hyof.pOrtsuWIinonetvP. MCAP, S-CAP: T-CAP: 8pCAp: poIv.filmc._itor PoIVVIiImeo_i,or Ton,.lmol.,oIVliooa_i,or Bipafoi.,trolVticc._it, 3.TR: FET: VR: POT: RES: MORES, CEMRES NF: eCAp E-CAP; T,on,i, Fieldeff,lrono Int.todeiOJil Volumeconol(Vorl.bl. ,.,orl PoteM;ISomili,od.obi. ,.i) C.,bontilm tiedstor

13、Mel.,o.i.film fixe!I, Cemented wirewoond fixed ,.i, Nonll,obl, Celomic capac;to, Aluminiumol.rly,;c.pac;, E-CAP. T-CAP000Bp_CAp.I.11 10uFI.,.in111F.1101V_ 4.A.mblie.on!pa,Ofubj.tocholll. withoutnotiu. 5.PafOfdefin;!prooodu,., Incldeinonvo,!o, o.101numbe b.Pa,t dffi:fiplion c.Modelnmbe IAnvoftho oboY

14、elockin;lhomono,d.,movdeloVmipmentofthO!orde,.) CA61NET ASSEMBLY *101 PNlNT-850 _ ffp.17883610 *102 OlAlWINDOWGLASS7802210 *103m BUTTON GUIDE(217401210 ., BUTTON GUIDE 12B N_ mPTS3.6 -SCow 814306S H.m SN9-nt892249S mw9-WOmOf 8931D9S . ,NOB R15Gl_32(,ningl1841060 . KNOBR15Gl_19D(otpytle.eil7851540 *1

15、10 KNOBRI5Gl-220I,ec,orl7B51610 0111 . PUSHBUnON(IFbond,hiblond, mltiPO,h,mling)1851560 *112 PUSHBUTTON M12335O(po,.;7B50620 *113 COV_ metolClor1820710 m pTS3.6BlK_SCfew81430611 . TFTS4.108lK_SCfOW88741011 . 1144BlK_wM89310411 BTMPlT -bottompl.le7324630 n.PTS34.6- !Cow 8143125 n, . FOOT234.127401080

16、 . PTS34.12-!Crow814300S PACKINGMATERIALS;:f FRONT ANGLE7226220 pTS3.6 - screwB14306S IBACKPLATEASSEM8lYI 1153.6 _ O,.w 814306S ITUNER CIRCUIT BOARD) pTS3.8-SCfewB4306S ., EARTHlUG414400080 . TWII)3_wosh.893403U TUNER PC8 HOLDER7031140 . mPTS34.6_ .Cfew8143065 mpMS3.6-SCfOW810306S mSPACER 7651152210

17、 *213.,.PUSHBUTTON SWITCH SOG TV3(POW.I4040800 213b . PUSHBUTTON SWITCH SOG21TV3IPOweri mPMS3.6_.crew8103065 ,. CCAPO.0047uFAC12SV239472C , CCAPO.0047uF AC250V239472E *216R2_R3 VRV16l4G3N25KCIOKotlm.24320730 *211 DIAL SHAFT910114581970 *244 METER BRACKET1031170 mPTS31:_6 _f.W814300S METER REFLEX PLA

18、TE7031240 mpMS34.12_0,8103125 ,. mIN34-ut892013S , mTW31:-wom,893404U ,., REFLEXPlTlocrvlicro.in)_ light lIJide plale7B7(l330 lAMPBV0_310300mm5808120 LAMP8V 0.3A 200mm5/108140 PART 0. 7226170 7226180 9825240 91341)640 9640550 .,., 960186E 960213F 960198K 961004A 9600010 4581360 962003C 962003E DESCR

19、IPTION CARTON BOX STYROL PAD POllSACK-(pol.thyl.clothl POllSACK113 _lp04yethyle.clothl INSTRUCTIONMANUALe INSTRUCTIONMANUALF INSTRUCTIONMANUALK WARRANTYCARDIN) POLISHINGCLOTH SILICA GEL -dfvef a_MATCH ANTIEX) -FM.nt.nn. PIN PLUG CORD RED PIN PLUG CORDYEl SIDE ANGLE(l) SIDE ANGLE (RI m TYPE H! ig 00.

20、 OO 00 000 00 00. 00 SVMBOL 0 8 PART ORDERING PROCEDURE.,nduditinony .:Patt numbo. Patdn;,iPl,n.0Model numbo. CInvof,t._lackingfrom on.cItmoycloIov_of,h.,odt.1 TYPETYPE SYMBOL m PART SYMBOL Hi .m DE$CRPTION-DE$CRPTlQN- NO.NO.NO.NONONO. i i:; , lAMP8VO.v.:zoo.m.,TUNER CIRCUIT BOARD ,PT$3f.12_1CftW814

21、312$ ,IMS3f.12 -.,.ow810312$ . FMFRONT END FB621U4110010 ,.TWf-._ .,. n BALUN COIL lSI1210420 ,IN3f_nut8920135 . ,- , TETRAPVSH SWSUE42 (IF-.t, LEO CIRCUIT BOARDI UOhbun. , Pl/SHRIVET3.3.57401110 .do. .,.,.POWER TRANSFORMER T1-275llOV1102750., STl,IOSCREW71(11)00 . POWERTR.NSFORMERTI279230V1102710 .

22、 , RDTRY$WSRZVOI bel.1 -.QtIOlV ,P.T. STOP PLATE ., .wndl81.3POt405S01O ,PMSx15_OCOW80415$ ,. TLUG2LP 442241W ., TLUG 2L$P 44225IW ,., PMS3fx 10 _ OC.w,03,OS IFM IF SECTION1 ,., IN3f- nul892013S ,., TW013f_11. 893404U ClDl , CC.P0.022uFBO.-204SOV 2312232 ,. RES 2.2Mohm 0%Y,W3252251CI02 , CCAP0.022uF

23、BO.-20%SOV 2312232 , CCAP O.022uFBO.-20%SOV 2312232 , CCAP O.022uFBO.-204SOV C 2312232 , C.CAP O.022uF BO.-ZOlloSOV C 2312232 00 CCAP0.022uFBO.-2OJl.SOV C 2312232 Cl07 0U01. BAC PLATE ASSEMBLY . C.C.P O.022uF110.-ZOlloSOV C 2312232 . C.CAP0.022uF110._2OJl.SOV C 2312232 CIlO C.CAP O.022uF110.2OJl.SOV

24、 C 2312232 ,. lACPLATE ASSl:MBLYWu9512710CllI OUof. .,. lACPLATE ASSEMBLY Eu,.Cll2 C-CAP O.022uF110.-20% 50VC2312232 ., 8AC PLATE ASSEM8LY Nd9512810CIl3 c.CAPO.022uF110.-2Ollo50VC2312232 Cll4 c.CAPO.022uF110.-20%SOYC CllS c.CAPO.022uF110.2Ollo50VC 301. ,. BAC PLATE NT8SOW . Cll6 C-CA,_ K 232101110 .

25、 .,. B.C PLATE NT.e!iOE CI17 c.CAPo.047uF110.-20%SOV C 2314732 -,lACPU.TE NT-8SON Cll8 CoCAP0.047uFBO._20%SOV,C2314732 .,.,. PLUG CORD P2. C119 CCAP0.047uF110.2OJl.50VC2314732 - PLUG CORD CEE2T E.cAP18R47uF21122SQ PLUG CORD CEE.JT ., C121 E-eAISOAO.47uF211SOSO . ,. CORD STOPPERSR3P .,. Cl22 ECAP ZSR

26、3.3uF2113130 . CORD STOPPERSRN,- CCAP33(IpF10lSOYSL 23233 CORDSToPfERSR6W.,7400740C24 CCAPO.022uF110.-2OlloSOYC2312232 . ,. CORD8R.CETCULl C125 CCAI O.022uF110.-2OlloSOYC2312232 . . CORD BRACET (EHI - ECAI25R4.1uF23150 ,PTS:s,8-oc,_814306$ CI27 CCAI O.022uFIll._2Oll.SOVc2312232 ., , US PIN TERMINAL2

27、1.24440470CllSOUIOI . .PMS3fx8-oc,_810308Som , EC.P SORO.47uF215050 . .IN3f-ny,992013S , C C.P 0.022uFBO.-20%SOY 231223Z . TWII)3f-11 993403U C131Oy, ofy E.RTH TERMIN.L4581580 ClnOy, ofy PMS.6_rlw8103065 Cl33 C.CAP 0.041uFBO._20%SOY 234732 IN3f_nu119203S , C.CAP 10pF K SOVSL232001 TWIII3f-w.8$3403U

28、C1350.101. 314 AMB.R ANT _.1.1IeOn , E.(:.P 10R41uF 2111250 315 ANTENNASToPPER C137 CCAPO.022uFBO.-20%SOV 2323Z . MS,20-oc,_8104205 CllS CCAPO.041yFIll.-2OloSOY 234132 IN4._,892014S CCAP0.041yF BO._SOY 23413Z . TW411._wahef C140 C.(:AP O.041yFBO.-5OV 23413Z 319 ANTENNA SUPPORTER C141 CCAPo.041yF8O._

29、SOY 234732 . ANTENNABLACOIII . n-S3f.8_oc.8l4308S CF102 m CORD STOPPER SR-3P -CFIOS CERAMIC FILTER MFC97 M . m ANTENNA TERMINAL . PIS3fxII -,ow DIODEV01212 . ., , SLIDE SWITCH$l13(FMl.,. . OIOOEVOl212., no , PMS3fxll-.,_ !CIOI ICHA1l211,- 1I01 I.DUCTDRZ.2uH2Ollo1210840 INDUCTOR lSuHW1210850 , INDUCT

30、OR 2.2uH2Ollo1210840 LEOCIRCUIT80ARD 0101 2SC161511,MI,- OlD2 2SC1815ll,MI5150825 ., LEOPC8 Q 2$C1615IL.1.115150825 402 LEOTlR1Q9 , 2SCl61Sl1,MI5150825 . , LEDSPACER7103100 9 10 P.RTORDERING PROCEDUREIrod.,.,.P.I.-. P.I.- _number. lony01me_1Id:.tr.,.y_I01_.1 ,. TYPE SYMBOL m P.RT SYMBOL , PART DESCR

31、IPTtOH DESCRIPTION o. .H,. .Z ,., 0 2SC9oIS077SC214 ECAP!iOAO.47F 211!i050 C21S ECAP!iOAO,47F211!iOOO Al0l RESHoIm .328470J C216 C-CAPO.OIF100.-0% 231103Z Rl02 RES560ohm ,. 328561JC211 CCAP 68pF10%!iOVSL 232680K m RES 3.9 KohmSll.lIoW328392J RES I Kollm5ll.lIoW328102J CF201 CERAMICfiLTERSFZ455A12803

32、10 RES 3JOoIlm,. 32833IJ ,. RES 47ohm ,.,0 DIOOE 152076!iOl019S Rl07 RES560ohm,. 32856IJ 0 DIOOE INIO ,. RES 4.1 Kohm,.37U ,., DIOOE 160 ,. . RES 470ohm ,. 328471J RHO RES330ohm,. 0 2SC16751L. IllI 0 Rill RESS_6 Kohm,.328562J 0,. TR2SC9oI$0,._., RES68K ,. Rl14 RES 820oIm,. :n6821J ,. RES12K ,. 32812

33、3J R115 RES 1 Kohm5ll.lIoW328102J AES1 Kohm ,. 328102J A116 RES68Kohm5ll.1IoW328683J RESl000hm ,. 328101J A117 RES 18 Kohm5ll.1IoW328183J RES220 ohm ,. 328221J R118 RES22Kohm5ll.%11328223J,.Out0Ie Rlla RES 100 ohm5ll.%11328101J R207 RESl!iOKohm ,. 328154J AESS.6 Kohm5ll.:OW328562J,. RES47Kohm ,. 328

34、473J R121 RES5.6Kohm5ll.%W328562J RES68Kohm ,. 328683J R122 RES56Kohm5ll.%11328563J A210 RES 39K .328393J RES 5.6 Kohm5ll.IIW328562J R211 RES33Kohm ,. 328333J R124 RES 10 Kohm ,. 328103J A212 RES IK ,. 328102J RES 5.6K,.328562J R213Oulo.USIl RES1.8Kohm,.328182J A21 RES 5.6K ,. 328562J R127 RES 150oh

35、m,.3281$IJ R215 RES 100 Kohm5Ao,.328104J RES 10 Ko/vn ,. 328103J R216 RES10Ko/vn ,. Oulol_R211 RES10o/vn ,. 328411J RES22Kohm ,. .,. A218 RES 5.6 Ko/vn ,. R131 RES 2.2 Ko/vn ,. ,. R21 RES.7Kohm ,. 3184nJ RES 10 Kohm5ll.%W328103J HYRKV$f l.o.7SNF8SOKohm_ AIll OSCCOilREO,- pot.,. . .,. AMIFTRAHSFORIER

36、1280160 Qu,ot. . AMDET COIL _AMd1lCrmorYl. R135 AES100 Kohm ,. 328104J.,. ,., AES3.3Kohm ,. 328332J R137 AES5.6 Kohm ,. 328562J A138 RES15 Kohm .328153J R139 AES2.2Kollm ,. 328222J (MPXSECTION) AlO AES3.9 Kohm ,. 328392J Al1 RESISOohm ,. 3281S1J ECAP2SR3.3F2113130 R142 Out0 E-CAP16Rl00uF2112300 A143

37、 RES 1 Kollm ,.328102J T-CAP3SOO.221F2S24021 RES68Kohm ,. T-CAP2503.3uF2523131 AI4S RES68Kohm,. T-CAP2S01.SuF2523111 . RES611Kohm ,. E-CAP16Rlo.F2112200 ECAP16R10uf2112200 TlOl fillIFTRANSfORMER1240180 $-CAP1OpF5ll.SOY223471Y flolDEl(I)SHYI719SlOGPINK- CCA.ISIOp15ll.SOYSL232S1lJ Filldisa,10.tNt .,.

38、,. 1Iol-CAPQ.00121f5AoSOYml22J fMDElI2l SNYI720S1OGBlUE_ ,. M-CAPQ.OOI2uF5ll.SOY222122J FIoIdisa.rYlO.,. , CCAP SIOpF5ll.SOYSl23251lJ E-CAII11A10uf2112200 E-eAP16Rlo.f2112200 MCAPQ.Ol!iFSll.SOY222153J CAMSECTION) M-CAPO.Ol!iFSll.SOY2221511 TCAP3S00,47f2S2405111 C201 CCAP 18pF10%SOYSL232180K TCAP3S00

39、.47uf2S2405M C-CAP0.047uF90._20% ,. 231473Z ECAP25R3.3F2113130 0 CCAP 0.0221F90.-20% ,. 231223:1; ECAP25Fl3.3F211313Q ECAP!ORlf2115100 C321 MCAPO.0041F10% 2224721F 223361Y E-CAP25R4.1f2113150 CCAPO.022uf80. -2Oll.SOY,.2312232 , 0U0I. E-cAP 16R33uF211223Q Ou,oI. E-eAPSOR1F2115100 M-CAPD.047F 22247JlC

40、 PART ORDERING PAOCEDURE1ludo in ony010A_Pmnumbe.B.PortIoipti.C_ModolnumOO. IAnyofhebov.locking fromonoc/omyfolv.hipment01hotoW328122J RES1.2Kohm5%lW328122J ,. HIIRKIISFHH5NF850Kohm- POtentiomet.r .,. R335 RES330 ohm5%lW328331J R336 HIIRKIISFHHSNF8150Kohm- POlntiomotor ., R337 RES3300hm.-W328331J R3

41、38 RES6.8Kohm.-,W328682J R339 Outofu ,O Outofu ., RES56KOOm.-,W328563J , RES47 Kohm.-W32B473J lREGURATORSECTION1 COO, CCAPO.OluFl00,-lIl.50011238103P ,., ECAP 25R2200uF2123.420 ,., ECAP16Rl00uF2112300 , E-CAp16Rl000uF21I2400 ,., ECAP16Rl00uF2112300 E-CAP35R22uF214220 ,I ECAI35Rl00uF2114300 CCAP 0.02

42、2uF 80,-20%50V 2312232 E-CAP 35R10uF2114200 C810 CCAP O,OluF100.-lIl.500V2381031 C8ll CCAP O,OluF100.- 0 - - - :I 0 0 0 - Z w U 0- Z w 0 0 - I 8 - 1.Turnthe FMfrontend shafttotheleftuntiltherotor ofthe variable capacitoriscompletelyoutofthe stator.locatethedeficitparton the dialdrumin line withthe F

43、Mfrontend shaft on verticalasshown in Figure1. 2.String the dialdrumand pulleysinthe directionof arrows.(In circled numberardeLl 3.TurntheFMfrontend shafttothe rightuntiltherotor ofthe variable capacitorisfullyrotated in the stator. Fix thedialpointertothestring at a readingof 87 MHz on the dial sca

44、le. 11 ALIGNMENT TestEquipment Allowaminimumof10 minutes warm-upfortest equipment and the tunertobetested. Maintain rated line voltage. FM Stereo/Mono Signal Generator Vacuum TubeVoltmeter(VTVM) Oscilloscope Distortion Meter FrequencyCounter AMSweep Generator FMSectionAlignment Connect testequipmentasshownin Figure2. ConnectFMStereo/Mono signal generator through standarddummyantennatoFMantenna terminalsofthetuner. Connect VTVM, oscillosco