NAD-4300-tun-sm 电路图 维修手册.pdf

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1、NADSERVICE _MANUAL -a MONITORSERIES 4300 STEREOTUNER RadioFans.CN 收音机爱 好者资料库 C NAD4300SERVICEMANUAL NOTE:This manual coversallversions. A:U.S.A. Al:Canada B:U.K. Bi:Austraha C:EUROPEandothers Cl:W-Germany TABLEOFCONTENTSPAGE LOCATIONMAP2 SPECIFICATION3 INTERNALVIEW4 SUGGESTED INSTRUMENTATiONHOOKUP5

2、FMALIGNMENTS6-9 AMALIGNMENTS101l WIRiNG DiAGRAM12-13 P.C.B.LAYOUTDIAGRAM1415 SCHEMATICDIAGRAM 16-17 EXPLODEDVIEWPARTSLIST 18-19 EXPLODEDVIEW20 ELECTRICALPARTSLIST21-23 RadioFans.CN 收音机爱 好者资料库 AMTuner Section Usablesensitivity. Selectivity. Imagerejection. Mono,30dBTHDN: Mono,50dBS/N: Stereo,50dBS/N:

3、 Mono,60dBS/N: Stereo,60dBS/N: Alternatechannel: Adjacentchannel: Mono: Stereo: Mono: Stereo: AllversionsexceptUSA. 50sec.de-emphasis 0.83tV 1.3V 14.5,uV 3.2tV 48IN 250jIV/meter. 55dB.at9kHz 45dB. USAversiononly. 75isec. 0.8.zV 1.OpV l3pV 2.51iV 42iN 43.5x8.7x29.3cm. 17.1x3.4x11.51n. 4.55 Kg./lOIb.

4、5.75Kg.112lb.10 oz. 50/60Hzat110, 120,220or240VAC. 24W. REARPANEL 1.AMRodAntenna 5.OutputJacks. 2.AMAntennaTerminals. 6.ACConvenienceOutlet(notinU.K.model). 3.FMAntennaInput. 7.ACLineCord. 4.OutputLevel Control. 0 C 312 SPECIFICATIONS FMTunerSection Inputsensitivity(3002) Capture ratio at25,45 LL_-

5、IFNA000W PhysicalSpecifications Dimensions(widthxheightxdepth) Netweight Shippingweight Powerrequirements 1 1 2345678910 11 () 3 RadioFans.CN 收音机爱 好者资料库 INTERNALVIEW 4 0 () FMALIGNMENT NECESSARY INSTRUMENTATION FMGenerator(lessthan0.05%THD.) StereoModulator(lessthan;0.05%THD.,more than50dBSep.) Audi

6、oGenerator(notnecessayifFMGeneratorhasbuilt-insweep,e.g.,SOUNDTECHNOLOGYST 1000Aand STiO2OA) ACVTVMs(oronewithaLeftRightswitch) THDAnalyzer(resolutionlessthan0.1%) Oscilloscope(5mVorbettersensitivity,Xinputcapability) FrequncyCounter VOMorDMM(highimpedance,mustreadinmV) 75ohmDummyAntenna IMPORTANT 1

7、)Beforealignments commence,releaseIFNARROWandMONOswitches(out),SwitchFM NRoff(in). 2)IFFMGeneratorisnotsynthesizer-type,besureto checkitsfrequencywithFREQcounterwhen adjustingdetectorand multiplexdecodercircuits. A.SYNTHESIZER FREQUENCY 1.ConnectFrequencyCounter betweenTP-104andground. 2.Tune to98MH

8、z(NoREinputneeded). 3.AdjustC-201sothatthelocaloscillatorfrequency shownbythe frequencycounter reads108.700MHz. TOLERANCE:108.700MHz+/2KHz B.FRONT-ENDALIGNMENTS Alignmentofthefront-end shouldonlybenecessaryafterrepairtothefront-endorcrystaloscillatorcircuits. a)TUNINGVOLTAGE Itisessentialtochecktuni

9、ng voltagebeforealigningtherestoffront-end. 1.ConnectDMMbetweenTP-105andground. 2.Tune to88MHz,andadjustL-6ifthe voltageisincorrect. TOLERANCE:3.6V+/0.5V. 3.Tuneto108MHzandconfirmthatthe voltageiswithinthefollowingspecification. SPECIFICATION:21-25V. b)TRACKING 1.ConnectFMGenerator(150KHzsweep,100Vo

10、utput)to75ohmantennainputand Detector ProbetoPin1of IC102withgroundtothe tunershield. 2.Settunerto106MHz,entorintoPreset8,andtunethegeneratorsothatcurveappearsonOscilloscope. 3.AdjustC-2,C-9,C-liandC-14formaximumcurveheightonthe oscilloscopewhilereducingRFinputtokeep entirecurveondisplay. 4.Settuner

11、to90MHz,enterintoPreset1,andtune thegeneratorsothatcurveappearsontheoscilloscope. 5.AdjustL-1, L-2,L-3andL-4formaximumcurveheight. 6.Repeatabovesteps2, 3,4and5(usePreset1and8) tillbothfrequenciesareatmaximumcurveheight. SUGGESTED INSTRUMENTATIONHOOKUP o OSCILLOSCOPEFMGENERATORAUDIOOSC 1 00 I USEONL?

12、IFFMGENERATORWITHBUILT-INSWEEPUNAvAILABLE I WITHBUILT-INSWEEP lE: ST1000A DISTORTION METER I1 DISTORTION OUTPUT SCHEMATICDIAGRAMOF DETECTORPROBE Cl02 330p 00 o 4. 00 Diodesshouldbepoint-contact FROM OUTgermanium;Somecommonly TUNERC TOscoc availabletypesare:0A80 0A81 AA119 1N60 1N34 1N22 PICTORIALDIA

13、GRAMOF DETECTORPROBE Ri CENTERLEAD TOPINI Cl02 jjEEEE SCOPE Keepleadsasshortaspossible,to minimizestraysignalpickup. ATFRONTEND 5 6 C.IFADJUSTMENT 1.Settunerto98MHzapprox.(thetunermustbetunedtoanunoccupiedfrequency),andtuneFMGeneratorto displayacurveonOscilloscope. 2.AdjustL-5andL-101formaximumandsy

14、mmetricaloutputcurveonthe oscilloscopedisplay,using aslittle input aspossible. D.DETECTORALIGNMENT 1.Disconnect Detector Probefromtunerand Oscilloscope,andconnecttuneroutputtothe oscilloscopeand DistortionAnalyzer. 2.ConnectDMMacrossTP-101()andTP-102(+). 3.Tune to98MHzandfeed1mVfromFMGenerator(Modul

15、ate1KHz100%)to75ohmantennainput. 4.AdjustL-102SecondaryforlowestTHD. SPECIFICATION:lessthan0.12%(inMONO). 5.AdjustL-102PrimaryforOVreadingonDMM. TOLERANCE:+15OmV. 6.Repeatabovesteps4. J4*J 0 _ SIE55O(: _ : IDO13A 6 ClAPTABOOPAP IllI j _ RT2RT3A 1617 163-6280-0-0 262-1111-0-0 362-1111-1-0 462-3480-0-

16、0 563-5170-0-0 662-1110-0-0 762-1110-1-0 862-2320-0-0 992-2103-0-0 1171-2625-0-0 1271-2622-0-0 1371-2621-0-0 1471-2623-0-0 1571-2619-0-0 71-2620-0-0 1671-1912-0-0 1771-3111-0-0 2011-5121-0-0 2123-1327-0-0 23-1327-3-0 23-1327-2-0 23-1327-1-0 2285-258-0-0 85-260-0-0 85-240-0-0 85-259-0-0 85-235-0-0 AM

17、BARANTENNA POWERTRANSFORMER(A) POWERTRANSFORMER(Al) POWERTRANSFORMER(B,Bl) POWERTRANSFORMER(C,Cl) POWERCORD(A) POWERCORD(Al) POWERCORD(B) POWERCORD(81) POWERCORD(C,Cl) 370001A 381024A 38-181-2334-0-0 38-274-3111-0-0 38-374-3112-0-0 38-541-689-0-0 39Pt8o(q/ WASHER(TOOTHEDLOCKB10) WASHER(PLAIN9-14-0.5

18、) (1 ) EXPLODEDVIEWPARTSLIST Ref.No.PartsNo.Description FRONTPANEL PUSH BUTTON-SELECTORS(BLACK) PUSHBUTTON-ON/OFF(GREEN) PUSH BUTTONFRAME-SINGLEHOLE TUNERWINDOW PUSHBUTTON-MEMORY(BLACK) PUSHBUTTON-ENTER(RED) TUNINGKNOB FOOT 1063-1844-0-0LABEL:THISISNOTAHANDLE Ref.No.PartsNo.Description FRONTCHASSIS

19、SIDECHASSIS(U SIDECHASSIS(R) SUBCHASSIS(FRONTTOREARSUPPORT) REARPANEL(A,Al) REARPANEL(B,Bl,C,Cl) LEDINTERRUPTER CABINET C C IF8/wSELECTORP.C.B.ASSEMBLY TUNERP.C.B.ASSEMBLY FUNCTIONSWITCHBANK(4SWITCHES) HEATSINK HEATSINK 38-482-2130-0-0RCACONNECTOR -SINGLE ROTARYPOTENTIOMETER-OUTPUTLEVELCONTROL FMFRO

20、NTENDP.C.B.ASSEMBLY 40TAPPINGSCREW(PHILLIPSHEAD3x6BLK) 41TAPPINGSCREW(PHILLIPS HEAD3x8BLK) 1871-3110-0-0BOTTOMCOVER 1971-1892-0-0BRACKET-OUTPUTLEVELCONTROL 42 43 44 45 46 47 48 49 50 51 MACHINESCREW(PHILLIPSHEAD3x6BLK) TAPPINGSCREW(PHILLIPSHEAD3x6Cr) TAPPINGSCREW(WASHERHEAD3x6Cr) MACHINESCREW(PAN3x6

21、Cr) MACHINESCREWS(WASHERHEAD3x6Cr) MACHINESCREW(WASHERHEAD3x6Cr) MACHINESCREW(PHILLIPSHEAD3x6) TAPPINGSCREW(PHILLIPS HEAD3x8Cr) CABINETSCREWWITHWASHER(4x6 BLK) TAPPINGSCREW(FLATHEAD3x6Cr) 52OUTPUTCONTROLNUT (HEXAGON9-11-2) 53HEXAGONFLANGENUT(4-7-4.2) 54HEXAGONNUT(10-14-2) 55 56 2362-3332-0-0BUSHING-

22、ACPOWER CORD/AMANTENNA 2463-1843-0-0LABEL-CAUTIONFORFUSE(A,Al) 2563-1872-0-0MASKINGPLATE 2687-289-0-0TUNING SHAFT 2787-3247-0-0HEXAGONSTUD 2887-3251-0-0P.C.B.SUPPORT 2982-2171-0-0AMANTENNATERMINAL 29-187-3249-0-0PLASTICRIVET 3082-2161-0-0RECEPTACLE(A,A1) 3181-2320-0-0POWERSWITCH 32M1O8APOWERINDICATO

23、RP.C.B.ASSEMBLY 33S085APRESETSELECTORP.C.B.ASSEMBLY 33-171-1911-0-0LEDGUIDE 33-281-2336-0-0MEMORYSWITCHBANK(8SWITCHES) 33-381-2335-0-0ENTERSWITCH 34DO13ALEDDISPLAYP.C.B.ASSEMBLY 34-1SL-5653LEDINDICATOR 35ZOO4AVOLTAGESELECTORP.C.B.ASSEMBLY 36NOO1AROTARYSENSORP.C.B.ASSEMBLY 36-1TLP8O1PHOTOINTERRUPTER

24、18 19 LU LU 0 -J 0 x LU 0 CN 0 ELECTRICALPARTSLIST NOTE:ThisisnotacompleteelectricalpartsIst. POWERINDICATORP.C.B.ASSEMBLY:M1O8A(EXPLODEDVIEWREF.NO.32) SYMBOLNO.PARTSNO.DESCRIPTIONS D909SLP246BLED(GREEN) PRESETSELECTORP.C.B.ASSEMBLY:S085A(EXPLODEDVIEWREF.No. 33) SYMBOLNO.PARTSNO.DESCRIPTIONS D901-D9

25、08LN349GPHLED(GREEN) LEDDISPLAYP.C.B.ASSEMBLY:DO13A(EXPLODEDVIEWREF.NO.34) SYMBOLNO.PARTSNO. kD301TD63O1AP 2SC1815 2SA1015 SL-5653 LN449YPH 0301,Q302 0303 - LED3O1 D301, D302 DESCRIPTIONS INTEGRATEDCIRCUIT TRANSISTOR 0 C) 0 0 0 0 LEDINDICATOR LED(AMBER) VOLTAGESELECTORP.C.B.ASSEMBLY:ZOO4A(EXPLODEDVI

26、EWREF.NO.35) SYMBOLNO.PARTSNO.DESCRIPTIONS R9022.7Mc,1/2WCARBONRESISTOR ROTARYSENSORP.C.B.ASSEMBLY:NOO1A(EXPLODEDVIEWREF.NO.36) SYMBOLNO.PARTSNO.DESCRIPTIONS P1901,P1902TLP8O1APHOTOINTERRUPTER IFBIWSELECTORP.C.B.ASSEMBLY:QOO1A(EXPLODEDVIEWREF.NO. 37) SYMBOLNO.PARTSNO.DESCRIPTIONS IC4O1TA7O6OAPINTEGR

27、ATEDCIRCUIT IC402LA1222 Q4012SC1815TRANSISTOR D401-D4031SS241DIODE R40341-791VARIABLERESISTOR,5K-B CF4O1-CF40319-159(SFE10.7MZ2K-A)CERAMICFILTER CF40419-157(SFE1O.7MLK-A) 21 C TUNERP.C.B.ASSEMBLY:1024A(EXPLODEDVIEWREF.NO.38) SYMBOLNO. IC1O1 IC102 1C103 1C104,IC111 1C105, 1C108 IC109 IC110 1C112 CR3,

28、1C114 1C115 1C116 1C117 1C118 1C119 c Q101,0102 Q103,0104,0107,0112 0115,0116,0120,Q121 0122,Q123,0124 0105,Q114,0117,0118 Qi09 QuO,0111,0113 0119 DiOl,D102, D103,D104 D105-D107,Dili-D115 D118-D122,D125 DuO Dl 24 Di26 D127, D129, D130,D132 D128,D131 Li01 L102 Li04 Li05 Li06 Li07 Ci03,C125, C173,Ci89

29、 Ci26,Ci27 Ci53 Cl58 Ci87 Cl 88 Ci 96 C201 C228 PARTSNO. LA1235 LA1222 LA3401 uPC4558C uPC4570C LA1245 TD6104P TC9147BP TC4O11BP LB1450 BA61O4 78M05A 79M12A 78M12A 2SA1015 2SK3OA 2SK212 DS442BT KV1226Y GZA11Z GZA36X SRiK DBA1OB 13-533 13-536-i-0 15-167 i2-564 13-347 13-348 50V,0.22uF SOV,luF 36-133

30、36-134 50V,0.33uF 50V,0.1uF 5.5V,0.047F 36-136 FMDETECTORCOIL CHOKECOIL,l2OuH AMOSCCOIL lETCOIL(455KHz) 450KHzMATCHINGCOIL ELCTROLYTICCAPACITORLOWLEAKAGE TRIMMERCAPACITOR,2-7pF 3-iipF ELECTROLYTICCAPACITORLOWLEAKAGE MEMORYBACKUPCAPACITOR TRIMMERCAPACITOR,5.2-3OpF 1SV55 ii-437 11-438 11-439 11-440 13

31、-539 12-565 15-i66 15-172 36-134 82-2i62 82-2174 DIODE FMANTENNACOIL FMRFCOIL IFTCOIL OSCCOIL CHOKECOIL,iOuH 0.56uH TRIMMER CAPACITOR,3-11pF ANTENNACONNECTOR,YKV11-0065(A,Al) ,YKV11-0096(B,C) R126 R127,R141 Ri48 R2i0 R288 41-788 41-789 41-787 41-791 68f,1/4W DESCRIPTIONS INTEGRATEDCIRCUIT 2SC929TRAN

32、SISTOR 2SC1815 e SYMBOLNO.PARTSNO.DESCRIPTIONS CuB50V,82pF CERAMICDISCCAPACITOR,FK11COG1H CF1O1, CF1O319-157CERAMICFILTER,SFE1O.7MLK-A CF1O419-140“ ,SFP45OH FLiOl19-146ANTIBIRDIEFILTER FL1O2, ELi0319-158 LOWPASSFILTER,19KHz38KHz FL1O419-152“ ,10KHz FL1O519-153 “,9KHz XTAL1O119-205CRYSTALOSCILLATOR,7

33、.2MHz CR10119-156CERAMICRESONATOR,CSB456F11 FU1O15TT400FUSE,125V,400mA(A,Al) 173000FUSE, 250V,400mA(B,C) EU102,EU1035TT400FUSE,l25V, 500mA(A,Al) 173000FUSE,250V,500mA(B,C) p FMFRONTENDP.C.B.ASSEMBLY:F(EXPLODEDVIEWREF.NO.39) SYMBOLNO.PARTSNO.DESCRIPTIONS 1S188FMDIODE U IFT 013SK114VTRANSISTOR 02BF982 032SC461 04,052SC535B D1-D5 Li L2 L3 L4 L5 L6 L7 L8 C2,C9,Cii,Ci4 J101 VARIABLERESISTOR,i0Kf-B ,2OKfl-B 5Kf-B 5OKfl-B FUSIBLERESISTOR 2223 4 w C.) o OIAi3LN I NVdVCNIQ3LNIUdCitOWNAS9ICI