NAD 3240 service manual 电路原理图.pdf

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1、: NADSERVICE _ MANUAL m Z 1958BYNAD555PAINTEDINJAPANSTARTING SERIAL NUMBERA340IJ00001 3240 NADELECTRONICS INTEGRATED AMPLIFIER Ii II PAGECONTENTS 3REAR/FRONTPANELLAYOUT 4SPECIFICATIONS 5ALIGNMENTMETHOD 6PREAMP,VOLUMEPCBLAYOUT 78AMPLIFIERPCBLAYOUT 910AMPLIFIERSCHEMATIC 1112WIRINGDIAGRAM 13TRANSFORMER

2、WIRING(MULTIVOLTAGE) 14PREAMP,VOLUMEPCBPARTSLOCATION 15AMPLIFIERPCBPARTSLOCATION 1619ELECTRICALPARTSLIST 2021EXPLODEDVIEW 2224EXPLODEDPARTSLIST 25PACKINGDIAGRAM SERVICESAFETYPRECAUTIONS (UL) 1.Useexactreplacementpartsforcriticallocations,marked “ 2.Returnleaddresstooriginalposition,andreinstallprote

3、ctivecovers. 3.Beforereturningto customer,testforshockhazard;useeithermethodAorB: A.Leakagetest,“cold”: 1.UnplugACcord;turnpowerswitchON. PowerAmplifierSection CONTINUOUSAVERAGEPOWER OUTPUTAT8OHMS (minimumRMS40W(16dBW) powerperchannel,both channelsdriven, withnomorethantherated distortion) Rateddist

4、ortion(THD)20Hz20kHz0.03% Clippingpower,1kHz(maximum50W continuouspowerperchannel) DynamicHeadroomat8ohms Dynamicpower(maximum)8ohms shorttermpowerperchannel)4ohms 2ohms Dampingfactor Slewfactor Slewrate T.H.D.andSMPTE.I.M. distortionfrom250mWto ratedoutput InputImpedance Inputsensitivityfor1Watt!40

5、Wattsout Powerampgain PreamplifierSection PhonoInput InputImpedance InputSensitivity(1kHz) SignaltoNoiseRatiowith cartritdgeconnected,Aweighted InputOverloadat20Hz! lkHz/2OkHz RIAAAccuracy HighLevelInputs(CD.Video,Tape) InputImpedance InputSensitivity SignaltoNoiseratio,Aweighted InputOverload Frequ

6、encyResponce Outputs Preampoutputimpedance Tapeoutputimpedance PhysicalSpecifications WidthxHeightxDepth NetWeight ShippingWeight PowerConsumption 42x10.8x38 cm 16.5x42.5x15 in 6.7kg(14lbs14oz) 8kg (17lb12oz) 50/60Hzat110,120, 220,or240VAC 200W 8.COInput 9.Video input 10.lap.input/Output. 11.Preanrp

7、Out.Mainin. 12.SortClipping. 13.Speakerinrpedance. REAR PANEL I.ACLineCord. 2. ACConvenienceOutlets 3.SpeakersA. 4.SpeakerS8. 5.PhonoGround 6.Ptrunolrrprar 7.TunerInput. 65 LEPANNEAUARRIERE 1.Cordondalimentatiun 2.PosesCA 3.EnceintesA 4.Enceintes8 5.Massephonoicuteur 6.Entrephony 7.Entretoner 8.Eetr

8、eeiecteur dedisquecompact 9.Entreevideo 10.Entree/Sortiemagnetophone 11.Sortiede prdamplilication 12.Ecrdiageendouceur 13.Impedance RUCKSEITE 1.Netzkabel 2.Sekundar.Stevkdosen 3.AnschlusseturLautsprechergruppe A 4.AnsehIusseturLautsprechergruppe 8 5.MasseanschluflutPlattenspieler 6.Plattenspieier-Ei

9、ngang 7.Tuner-Eingang 8.CDEingang 9.Video 10.TonbandgeratEingangAusgang 11.VoruerslarkerAusgangEndverstarker.Erngang 12.lmpulsbegrenzungs.Schalter 13.Lautsprecherirnpndanz.Sctralter 89W1134132 Specifications NAD3240PEStereoAmplifier Controls Treble7dBat10kHz Bass 10dBat50Hz MeasuredinaccordancewithE

10、IAStanderdRS490(formerlyHF BassEqualization +3dBat70Hz A202) . 6dBat40Hz Measurementsreferredto8ohmsaretakenwithSpeakerImpedance InfrasonicFilter 3dBat12Hz selectorat”8ohm(High).“Measurementsfor4and2ohmsare12dB/octave takenwithimpedanceselectorat”4ohm(Normal)“Low Level(audiomuting)20dB Specification

11、sarethoseineffectattIretoneoiprioting. specificationsordesignsat anyhivewithoutnotice. + A L + iuecouscswincneownon RwsointOn/OWMAX c:)* I!E0!_ui1 ,INADELECTRONICS,INC rosenCDunenoar tMPOEOuT 401515OOS000/L000CiN B(t*a L.nuer,.Jusor, TION: EnLcscoriscoucsccs CAUTION TOREDUCE GuuvcSOviPOURARiENT ThER

12、ISK OFcLEcnRlc cNocsvnncoScTcNTcz 5100CR.DONOTREMOVc PRODOUVRIRLOPPARcIL concnORSACKI cnDrnOvCnERovo NOUSERSEROICEA8LE cnr,rPOsuNTSINncRNcs mATSINSIDE.REFER 12 sonsLuPncscscc5UscscrrviosaToQIJAUFIED pcRsosNEovvLlFlcc ScRniCEPERSONNEL FRONT PANEL LEPANNEAUAVANTFRONTSEITE 1.Power 9.Menu1.Alrmentation8

13、.Mono1.Nelanchalter 8.MonoSterenScflalter 2.Phones9.Tape Monitot 2.Casquedecovte9.Commutateurdesuroeillancedebande2.KopthorerAnscnivU 9. VorUSerBandSchalter 3.SpeakerSelentoe10.InputSelector 3.SAlectevrdeeceintes10.SelecteurUentree3.Lautspreoher-WairlschalierI0.Engangs.Wahischalter 4.Bass11.LowLevel

14、 4.Graves11.Lowlevel.4.Ratstellerft.SctralterturLaurstarkeabsnnkung 5.Treble12.LoudneSs 5.Argus12.Commorarevr de contovrsonore5.Hohensteller12.Gennrrictrtige/Lautstarke.Einstellung 6.BassEO,13.Volv,ne/Balance 6.BassEq13.SVlvrrte/Eifvilibrage6. BaDEqvalizerSchalter13.LavtstarkeiBalance.Stellnr 7.intr

15、asneicFilterOtt 7.Filtreintrasnnigve7.SchalteryrinlrauchallFilter 1 N.ADSoanuAree#rtr.e PENNERENVELOPE noons suerCLiPnrso NAGreservestilerighttochange 6dB 160W 200W 250W 50 50 15V/Jsec 1OV 20Hz20kHz0.5dB 6000hm SourceZ+l0000hm 23567u9 11121310 34 ALIGNMENTMETHOD MAINAMPLIFIERALIGNMENT IMPORTANTNOTES

16、: 1)Beforeadjusting,removeinputsignalandload,andset Speaker Impedanceswitchto8ohms.(Resetto4ohmswhenfinished.) 2)Theseadjustmentsarealwaysnecessaryafterrepairto main amplifier. 3)Afterrepair,itisrecommendedtousecurrentlimiter(40-80W lightbulb)inserieswithACmainsline,forinitialturn-on. A.CENTERVOLTAG

17、EADJUSTMENT 1.ConnectDVMacrossLchannel(Rchannel)outputterminals. 2.Turnon,andadjustVR-401(VR-402)forreadingof0V 30mVDC. B.IDLECURRENTADJUSTMENT 1.RemovesoldershortacrossR-471andR-472. 2.ConnectDVMacrossR-471. 3.TurnonandadjustVR-403forreadingof28mV2mVDC. 4.Repeat,usingR-472,adjustVR-404. C.FINALADJU

18、STMENT . . 1.Leavepoweronminimum5minutes. 2.Repeatcentervoltageandidlecurrentadjustments. 3.When finished,replacesoldershortacrossR-471andR-472. t1 I (J+ (S4 .C 2 LL.1 213 I IvT 0 (SIS a:1 a: m C261IC201 (1 P2 C226 11 IF + P205 thos I .JL C223 C201 2Oi I+It1 .P207 Wv- P2),-. - HF c2; C233 AMPLIFIER

19、ALIGNMENTPOINT PREAMP,VOLUMEPCBLAYOUT U u (7) cc L1 LZI P217 wv (4(4 (4 0j 0 TT . 5 AMPLIFIERPCBLAYOUT 0423 0429 D411 _ I R471+ C421 L P461R45 o,I - -,Ii 04160436 R45 2.76 I 1/5051/05 2.26 I2.26 04068 .0 R404 200P U 156 330 9516 5.66 9444 220 MAININ Cl-i MAININ LCH TUNER PIlONO VIDEO CD TAPEIN RECOU

20、T RECOUT TAPEI CD VIDEO PHONO( j1K R230 TUNER( 1% C223 RCH o.1;j 0614 4.75 432 R478R482 0438 R490442R4981 I 100470 II250669 715258826 15% 33OP 1261W 14l/2W_721 F1f 0440 0426 423V2 9470 0428 1/2W 0422 2502260 BK1/2W 2501047 665 0 9438 D 680 + R450 .1C4l6 15% 1W R5Ol SPEAKERSW SW6O1-l 110 1W e LCH .1_

21、C447 SPEAKER 00A c45 SPEAKER SW4OI-2 R5032201W _w._VflJ402 1201j, HEADPHONE RCH L402 SW4OI-3 a- 0 SPEAKER SPEAKER I448ROH 1R5O2 “B., 10IWSW4 OI4 712K 11OIK,(254 9529 4-2-tL) 2SA10150503 4.76 0505R52 ._I19V 2SCl8lS $ 8 I R5263ov,7-, 2SC1SI 100% 05 _.i?NR53OI 295 THV 11.8% I*LED5O247% R520LE0502I ,Eo5

22、01j rIX0519 3.9% 47/505 0454VR4 J1.7VO 169 675 2S12260 10/,00V J -J 0426 isp 4029 R229 1% . 0203 + 0422 2S41360 435 -IR4SL76K1/2W 0424254970- 0436 R496 I I 330 I 9663 .BK2A-4OL71 VT330P 435 o1I OS. 1/2W 435 _ 0420 0226 -7lV434 250669 R492 0446 R500 U _ 71V 715 9488 715_ 8.2V 0438 R480 R48H L1R4686B

23、2S01062 1100 1670 lOOP 15K 9201 9223 922516 3.3/SOS 4mV 201 loop IX R213R214 0213 1%1k +100/255 10201-1 4I NJM20434”114 4mV34r* 100/255 2 l8mV 9215 7R2O968 R3JOj C2l868% 0207 1800P1 R211 47/1050211 68002092200PB200P T100P BASSEQINFRA SW7-15W8-l 0305 -w 1/505 :0303 0.1 4001 L15 1KC2261OOP R2191% 0.l

24、S41 R22016 + 0501 0517 6 47/255R5O51% 205 0515 ov 47/255 206I SW7-3 LL /9201-310K LCH 21 RS11 1K -+ 0502 205 INPUT SELECTOR TUNER SW3-1 +0217 TAPE“1I BALANCEI MON I ILCH 22/105SW4- 59201-1506 -R217 4 -180% SW6-1J -ji: -SW4-2 I SW5-l I JSTEREO IBALANCERI 5R201-2501 0 0 IX SW5O1-2 RS1O9509390 680% 0 I

25、X 922816 0228T 100P + 1c3O1/4w II 1% I 161100.255 R3llR312 C31 020 LCJNJM2043 1/2W 9325 2SK363 OUT 1 PRE 1mV38OO -C3O71_3_L,_-_._.f-.-41 R3O7 jC317,IOOP I 1312O%47/1051R329 VR2O2-1IOKA R313 LOW 4 LEVEL9327 10/255/505 C319 j68O+ 03091 .5i5.j311 Iswg-1 I I R317 12R321I, 39K 03 11, 1 ,_J 1K, -H 180VR2O

26、3-1 0.0160.1 i 0504 20513 0501 330 I 6506 /3SVI I 90503 L 0 592014 VOLEJ R3O6 9OH180% 206 4.7/505 5O1 WER SW5O1-1 0521 US 4700 4005 :4.7M R522 1/2W SW5O2 I 715 80502 LF5045A + 00022AOO22 81ii 0501 * _ I1,.+ fl-4-Hl- 0503 I0,022 0.022 L_,0-,0 -715 I 0dU F5O35A ITREBLEI 10325 .L22OP1C301-2 NJM2O43 030

27、2 urns 5 + C32 9326R33O 6 ttts47 /Tt8K iON _On,V 0318lOOP llmV R314120K VR2O2-21OKAR3142S6363 PR r 0310j0,68IJ3.6SW9-2R328 1O/25V/5O5 : P322 a- j 0316 R32O10640322 _j_ 0,1 1805R2O3-2 0.018 ITREBLEI 9 SW502 F5Ol4A EU Notes. 1AlllesistanvevaluesarenIlk 10001!M1000KII 2Allcapacitancevaluesarein,FP 10”c

28、F 3Allresistorsare1-6watt,unless otherwisespecified, 4VoltagesmeasuredfrompointindicatortochassisgroundwithVTVMat line volumecontrolminimumandnosignal lSneclficatioosandCircuitssubjecttochangewIthoutnoticemrmprucemnntI 10 z 0 Q 0 0 C-) CD 0 0 ()Xi oJ WHITE BLACK w C-) o 0 I C m -ci C-) -D I 1 P1 ;ti

29、 -ci C-) ci rn I 0 j -o 0 P1 z (1) POWERTRANSFORMERPRIMARY WIRING(MULTIVOLTAGE) . 120V 220V TH fl-i FUSE FUSE 240V FUSE . z 0 I 0 0 -J If) I ci: 0 0 0 LU 1i -j 0 z 0 I 0 0 -J U, I ci () a ci: LU a- LU D -J 0 S . . ELECTRICALPARTSLIST SYMBOLNO.PARTSNO.DESCRIPTION REF SYMBOLNO.PARTSNO. DESCRIPTION REF

30、 R201,202,219,220,225,226,227,0920861024Res,Carb,1k+5%1/6W R5210920863924Res,Carb,3.9k+5%1/6W R227,228,229,230,321,322,505, R 522 0920-024754Res,Garb,4.7M5%1/2WA,A1 R506,511,512 R5260920862234Res,Garb,22k+5%1/6W R203,2040920861544Res,Garb,150k 5%1/6W R5280920861044Res,Garb,100k+5%1/6W R205,206092086

31、6634Res,Garb,68k5% 1/6W R5290920864724Res,Garb,4.7k+5%1/6W R207,2080920863334Res,Garb,33k +5%1/6W R209,2100920863944Res,Garb,390k+ 5%1/6W C203,2040937853386Gap,El3.3uF+20% 50V R211,212,215,216,327,328,433,0920866814Res,Garb,680+5%1/6W C205,206,307,3080930204704Gap,Ger47pF+5% 50V R434,437,438 G207,20

32、8,409,410,515,516,517,0937834706Gap,El47uF+20%25V R213,214,311,3120920021024Res,Garb,1k+5%1/2W G518 R217,218,303,3040920861844Res,Garb,180k+5%1/6W G209,2100933852224Gap,Poly2200pF+5%50V R221,222,407,408,409,4100920862224Res,Garb,2.2k +5%1/6W G211,2120933858224Cap,Poly8200pF+5%50V R223,224,513,514092

33、0863314Res,Garb,330+5% 1/6W C213,214,311,3120937831016Gap,El100uF+20%25V R301,3020920861054 Res,Garb,1M+5%1/6W -C215,216,221,2220933851824Cap,Poly1800pF+5%50V R305,3060920861514 Res,Garb,150+5%1/6W C217,218,411,412,413,4140937832206Cap,El22uF+20%25V R307,3080920865634Res,Garb,56k+5%1/6W C219,2200933

34、452244Gap,Poly0.22uF+5%50V R309,310,5270920861034Res,Garb,10k +5%1/6W C223,224,225,226,227,228,229,0931251015Gap,GerlOOpF+10%50V R313,3140920861244Res,Garb,120k +5%1/6W G230 R315,316,453,4540920865614Res,Garb,560+5%1/6W C233,445,446,447,4480939904700Cap,Ger0.luF+8020%50V R317,318,405,4060920863934Re

35、s,Garb,39k +5%1/6W C301,3020933851546Gap,Poly0.15uF20%50V R319,3200920861814Res,Garb,180 +5%1/6W C303,304,315,316,427,4280933851045Cap,Poly0.1uF+10%50V R323,3240920863324 Res,Garb,3.3k+5%1/6W C305,306,401,402,403,4040937850106Gap,El1uF+20%50V R325,3260920866824 Res,Garb,6.8k+5%1/6W G309,310,421,4220

36、937831006Gap,EllOuF+20%25V R329,3300920861064Res,Garb,1OM +5%1/6W G313,3140937856896Gap,El0.68uF+20%50V R3310920868224Res,Garb,8.2k +5%1/6W C317,318,437,438,439,440,449,0930201014Gap,CerlOOpF+5%50V R401,4020920862244 Res,Garb,220k+5%1/6W C450,451,452 R403,404,489,490,491,4920920861534Res,Garb,15k +5

37、%1/6W C319,3200933851246Gap,Poly0.12uF20%50V R411,4120920866804Res,Garb,68 +5%1/6W C321,3220933851835Gap,Poly0.Ol8uF+10%50V R413,414,423,4240920028224Res,Garb,8.2k +5%1/2W C323,324,5200937854786Cap,El4.7uF+20%50V R415,416,421,4220920864314Res,Garb,430 +5%1/6W C3250930202214Gap,Cer220pF+5%50V R417,41

38、8,419,4200920861524 Res,Garb,1.5k5%1/6W G405,4060933851225Gap,Polyl200pF+10%50V R425,426, 427,428,429,430,431, 0920861804Res,Garb,18+5%1/6W C407,4080930206814Gap,Cer680pF+5%50V R432 C415,4160937822216Gap,LI220uF+20%16V R435,436,439,4400920861 224Res,Garb, 1.2k+5%1/6W -C417,418,419,4200930202204Gap,C

39、er22pF+5%50V R441,442,445,446,5250920864734Res,Garb,47k +5%1/6W G423,424,425,4260930201504Cap,Cer15pF+5%50V R443,4440920862214Res,Garb, 220+5%1/6W C429,430,431,4320935971006Cap,El1OuF+20%1OOV R447,448,449,4500925431534 Res,Metal15k+5%1W C433,434,435,436,441,442,443,0930203-314Cap,Cer330pF+5%50V R451

40、,4520920862724Res,Garb,2.7k 5%1/6W C444 R455,456,485,486,487,4880925421024Res,Metal1k +5%1/2WI C453,454,455,4560937851016Cap,EllOOuF20%50V R457,4580920861004Res,Garb, 10+5%1/6W C501,502,503,5040939904500Gap,Ger0.022uF+8020%50V R459,4600925423314 Res,Metal330+5%1/2W C505,5060939908400Cap,El6800uF+20%

41、50V R461,462,463,4640925423384 Res,Metal3.3+5% 1/2W C507,508,511,5120939904600Gap,Cer0.047uF+8020%50V ZR465,466,467,468,507,508 0921116804Res,Garb,68+5%1/4W C509,5100939908500Gap,El6800uF+20%80V R469,4700920021834 Res,Garb,18k5% 1/2W C513,5140938943316Gap,El330uF+20%35V R471,4720920020104 Res,Garb,1

42、+5%1/2W C519,0937854706Gap,El47uF20%50V R475,4760920024724 Res,Garb,4.7k5%1/2W C52109399210OOCap,Ger4700pF+10%400V R477,478,479,4800920861014 Res,Carb,100+5%1/6W or0939922000Gap,Ger4700pF+10%400V R481,482,483,4840920864714 Res,Garb,470+5%1/6W C522,523,524,5250931251025Gap,Cerl000pF+10%50V R493,494,4

43、95,4960925436824 Res,Metal6.8k+5%1W R497,498,499, 5000925431234Res,Garb,12k+5%1W Q301,3020909001855Tr,2SK363GR R501,502 0925431004Res,Metal10+5%1W Q401,402,403,404,411,412,415,0906207655Tr,2SC2240GR R503,504 0925432214Res,Metal220+5%1W Q416,439,440 R509 0920863914Res,Garb,390+5%1/6W Q405,406,407,408

44、,409,410,413,0906207755Tr,2SA970GR R510 0920816844Res,Garb,680k+5%1/4W Q414,441,442 R515,516 0920865624Res,Garb,5.6k+5% 1/6W Q417,418,423,424,437,4380903006303Tr,2SD669AC R517,518 0920862744Res,Garb,270k5%1/6W Q419,4200902012225Tr,2SC3423V R520,530 0920861824Res,Garb,1.8k+5% 1/6W Q421,4220900005825T

45、r,2SA1360V 1617 LED1 LED2 IC201,301 PARTSNO. 0901003803 0903006405 0901003905 0904005700 0904005600 0906200455 0906200255 0914004700 VR2O1 VR3O1,302 VR401,402 VR403,404 SERIALNO.06461up R489,490,491,492 C437,438,439,440 C441,442,443,444 Q435,436 Q437,438 D421,422,423,424 PARTSNO. 0019871000 00315520

46、00 0031551103 0031835103 or0031837103 0031837102 or0031837102 0920862224 0930203904 0930205614 0904006100 0904006000 0913007800 DESCRIPTIONREF TransPower Volume!BalanceControl,2OkB/5OkBH ToneControl,lOkA VRSemi,10kB VRSemi,10kB VRSemi,1kB VRSemi,1kB Res,Carb,2.2k+5% 1/6W Cap,Cer,39pF+5%50V Cap,Cer,5

47、60pF+5%50V Tr,Darl,BD680 Tr,Darl, BD679 Diode,BY500100 J201 J202 J203, J40I J401 J402 L!J501, 0045400000 or0045401000 0045078000 0045089000 0045079000 0045090000 0045047000 0045007121 0033209000 0033211000 0033210000 0033213000 0033214000 0033867000 0033036000 Breaker Breaker Fuse,4A/125V Fuse,T.4A/

48、250V Fuse,5A/125V Fuse,T.SA/250V Fuse,1A/125V Fuse,T.1A/250V JackRCA,2pm JackRCA,6pm JackRCA,4pm TerminalSpeaker TerminalSpeaker Jack6.3mm,Headphone OutletAC A,A1 B,Bi,C,Cl A,A1 B,B1,C,C1 A,Al B,B1,C,C1 L401,402 TPC1,2 TH1 0013093000 0918002400 0918002500 Coil,Spring Thermistor,DRE185A Thermistor,PT

49、H487ABC471 SW2/5/ 7/8 SW3 SW4 SW6/9 SW4O1 SW402 LTSW5OI LtSW5Oi SW502 0028005000 0036030000 0028006000 0028004000 0036031000 0028240000 0028009000 0028010000 0028254000 SWPush,FMNR/Mono/lnfra/Bass Eq SWRotary,InputSelect SWPush,TapeMonitor SWPush,Loudness/Low Level SWRotary,SpeakerSelect SWSlide,SoftClipping SWPush,Power SWPush,Power SWSlide,ImpedanceSelect DESCRI PTION Tr,2SB649AC Tr,2SD1047E Tr,2SB817E Tr,BD912 Tr,BD911 Tr,2SC1815GR Tr,2SA1015GR Diode lN4148 SYMBOLNO. Q425,426,435,436 Q427,428 Q429,430