ElectroVoice-EV1122-int-sm维修电路原理图.pdf

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1、Effi76ice.EI.ECTFICIIIICEi SEFIVICE MANUALTHIS SERVICE MANUAL COVERS ELECTRO.VOICE MODELS:FM STEREO BECEIVER E-V 1180FM STEREO TUNER E-V 1159STEREO AMPLIFIER E-V 1122ELEETFICl-VCllCEr INEA Subsidiary of Gulton 1ndLt517iss, lnc5OO ccclt St., Buchanan, Mlchigan 49107Litho in u. s. A,Form No. 1406Radio

2、Fans.CN 收音机爱 好者资料库INTRODUCTIONThis service manual was designed with the technician in*inO. tt has been kept as brief as possible withoutover-simplification. All procedures are presented in a clearit*p-Uv-ttp manner. Althaugh we have tried to anticipateall of youi problems and questions, in special i

3、nstancesvou- *uv need additional guidance Address anv suchSPECIFICATIONSinquiries to our Technical Service DepartmentThe sheets are punched to fit a three-ring binder so thatany production changes and additional service tips can beeasity added. This will keep your Electro-Voice ServiceData as uPtoda

4、te as Possible.TUNER SECTIONtE-v 11S0& EV 1159)Sensitivity: 3 uv,I$fFruoounu Response: tl d8,30-15,000 Hz- -a-r tti*it of IHF specs. Actual response greatlyexceed this igure.)AMPLIFIER SECTION(E-V 1180 &E-V 11221Power Output,IHF Musie Power:Continuous Sine Wave:FrequeucY ResPonse:30 wattsl0 watts Pe

5、r cllannel into8 oltms11.5 d8,20-20,000 Hz atrated outPutHum and Noise:Tumng Range:Tuning Indicator:Drift:Harmonic Distortion:Power Requirements:Dimensions,E-V 1180:E-V 1159:E-V 1122:Better than 55 dBbeiow 100%modulation for full quieting88 to 108 megahertzZero center meterLessthan.A2%Less than 17o

6、at l0O7omodulation2.s dB22 dB at I kHz40 dBGENERAL110-120 volts. 50-60 Hz AC5 h., 157+ w 8% d4/a 1t.,157+ w.$Yz d.41h 1t.157r w.,8% dHum and Noise.-l rxitiary tnprt Better than 65 dB belowrated outputMagnetic Phono lnput: Betrer than 50 dB belowrated outputChannel Separation: 40 dB at i,000 Hzlnnuts

7、: Mag Pirono-AuxiliarYlnimt SensitivitY, 4 mvPhono:er-li-v l18o): 250 mvnu* iE-v irzzi, loo mvControls (rotarY)Volume witu onloff switchBalance with P-uil/mono switchSelector Phono-Tuner-AuxiliaryBass Total variation of 22-dB at 50 HzTreble Tstai variation of 22 dB at 10 kHzOutputs,Speakers 4-16 ohm

8、s Per channelSiereo TaPe Recorder5i*iio A*iopont on front PanelCapture Ratio;Channel Separation:SCA Rejection:Audio Output (EV1159): .5 volt Pet channelat |AA%modulation and full quietingStereolMono Switching: A11 electronic and automaticStereoIndicator: - Panel light indicates presenceof stereo blo

9、adcast regardless ofPull/nlono switchAntenna Input: Tern:inals for 300 ohm FM aotennaSERVICING PROCEDURETEST EOUIPMENT1. FM signal generator, tuning 88-108.MHz modulated + 75kHz. Attenuator accurate down to 1 i;v2. FM Multiplex generator (98 MHZ .cirrier or equivalent withcaiiuiaieo nr livel and mod

10、ulation)3. Audio VTVM4. DCVTVM5. Oscilloscope6. Harmonic Distortion AnalYzerPOWER OUTPUT ANDHARIVIONIC DISTORTION(E-V 1.22& EV 1180)STANDARD TEST CONDITIONS:2TONE CONTROLSFLATCENTEHEDBALANCE , .INPUT SELECTORSPEAKER LOAD.,.AUX. . .8 oHMS1, Terminate both amplifier output,channels into 8-ohrn non lnJ

11、riG load resistors, 12 watt minimum rating2. Simultaneously perform the tollowing tor both channels lnI.aiiei with each load resistor, conneit the input leads of anIrirtulv calibrated audio VTVM and a HD analvzer3. Connect a lowdistortion audio generator-to the AUXinput iacfs. Set generator output l

12、evel to 25O mV+ 1 dB 1000 Hz4. ,Apply AC power to the receiver and carefullv advanceUblurrnglontrol cloikwise for full power output I volts (10wattsl.5. TOTAL HARMONIC DISIORTION should measurel37o orless.The E-V 1122 and EV 1190 m?y. !e checked to the additionalpu-iiicationt siren at the ront of th

13、is manuaiRadioFans.CN 收音机爱 好者资料库FM.MULTIPLEX ALIGNMENTFM ALIGNMENT(E-V 1159 & E-V 1180)1. Defeat the permanent AFC action by grounding point Don the l.F. pcb a$sembly.2. Tune the receiver to the low end of FM band with no signalinput. Adjust the AGC voltage at point A on l.F pcbassembly with respect

14、 to chassis ground, for +10.5 volts DC.Adiust with 100 kSapot (1).3. Adjust the top slug of ratio detector transformer for centertuner-meter reading on noise.4. Connect FM signal generator to the antenna terminals. Setgenerator at 90 MHz,3 W R.F.40O Hz modulation t75kHz deviation.5, Connect an audio

15、 VTVM and oscilloscope to the E-V 1 159output or E-V 1 180 tape output.6. Tune in the signal generator on receiver at 90 MHz for centermeter reading, NOTE; lf the unit is completely out ofalignment, additional signal level may be required to obtain agood output level. Signal level may be reduced as

16、receiversensitivity is improved.7. Adjust the bottom slug of the ratio detector transformer formaximum output.8. Adjust the lop, then bottorn slugs of l.F. transformers on thel.F. pcb asserirbly ineluding slugs of transformr T2 (locatedin FM tuning unit) for maximum output consistent with awell-bala

17、ncd signal on oscilloscope.9. Adiust the antenna coil T1 in the FM tuning unit formaiimum output, Dial pointer should be setting at 9O MHz.10. Tune the signal generator and FM tuner to 106 MHz. Adiustthe antenna, interstage and oscillator TR trimmers in the FMtuning unit for maximum output. Dial poi

18、nter should besetting at 106 MHz.1 1 , Repeat steps 9 & 1 0 for proper tracking and best results.12. Remove AFC ground!MULTIPLEX ALIGNMENTCheck and perlorm FM Alignment if necessary. lmproper FMalignment will make proper MPX alignment impossible.1. On the MPX pcb assembly, connect a 67 kHz SCAgenera

19、tor to thejunction of the 18 k$l,resistor (20) and the 5llF capacitor 3 at the input of ths multiplex eircuit.Connect an audio VTVM to the base of Ql . (Mode switch inSTEREO on E-V 1180.)2. Adjust SCA coil L1 for a minimum output on VTVM.3. Bemove test equipment connected in Step 1, Connect amultipl

20、ex gnerator to the FM antenna terminals, Setgenerator level to 100 pV at 98 MHa.4. Connect an oscilloscope and audio VTVM to the rightchannel output. Apply LEFT channel modulation (1007o1from the multiplex generator and adjust coils T1 and T2 onthe MPX pcb asemby for minimum output.5. Modulate RIGHT

21、 channel and che6k minimum output on leftchannel. Separation should be 25 dB or greater, Repeat Steps4 & 5 until no further improvement is obtained.05C. TANT,TRllvt8soo8 T IPART No. DESCRIPTIONE.V 118O RECEIVERTiansformer-PowerCord-PowerDial PointerKnob-TuningKnob-ControlFront PanelSide PanelCabinet

22、 AssemblyDial LensTerminal Strip-MiniatureTerminal Strip 5T)Dial Drum AssemblyDial Eracket. Socket & Pulley Assy.Lampholder & Brackat (1 lSpacer-TransformerLampholder & Clip 2Meter SupportE.V 1122 AMPLIFIER152261651 1A7716477724.AM77660-AMA7717g-ED77211-HVA8502A77 17 42-1184278185393850108501 169021

23、20926790081 52031651 177660-AMA77180-EDTransf ormer-PowerCord-PowerKnob-ControlFront Panel3L-IMME,?4q_0ER -i lYfRSf G. TRTMMGENERAL PARTSPARTS LISTPART NO. DESCRIPTIONGENERAL PARTSlgorto32154307143297716317 16276477-TV7622977161-PK77161.ND77161-PJ20676205192010s1713?171 38209152708321827711011161776

24、p32A9282A827-APDial SpringMeter-TuningLamp (No. 49 Stereo)Lamp (No. 47 OiallFlywheelShaft*Flywheel shaftBearihg-Dial Shaft (Rear)Bushing-Dial Shafi FrontLens-RedLens*BlueLensi-AmbefFuse 1A 3AG Slo-BloFuse 1Y.A 3AG OutputStrairi Retief (Hiyeo)Phono Socket (Cbnnector)lnsulator-Phono SocktFuse BlockTer

25、minal Strip-Screw (4TlTerminal Strip-Screw (3T)-Clamp-CapacitorPhone JackFM AntennaPushnutNut-Knurled BrassPART NO.77212-HUA85073270502703677178zGrr915211A1724116/.1277210-AM7727o-AMA77?34-ED85r0177212-HVDESCRIPTIONSide PanelCabinet Assy.Terminal Strip t3TlTerminal Strip (5T)I nsulator-Fishpaper (81

26、t1LampholderPART No.A772352088920s33560892705020797851322092077265E.V 1159 TUNERDESCRIPTIONDial LensFuse 1/10A (Slo-Blo)Lampholder SocketSwitch-PowerTerminal Strip (3T)Strain Relief (Heyco)Dlal Bracket, Socket & Pulley Assy.Dial Drum Assy.Spacer-PanelTransformer-PowgrDial PointerAC Line CordKnob - T

27、uningKnob - SelectorFront PanelCabinet AssBmblySide PanelPACKING PARTS967559675453340063364453sSX)carton (E-v 1180)Carton (E-V 1 159 & E.V r 1221lnstruction Sheet E-V 118Olnsruction She6t (E-V 1159)lnstruction Sheet (EV 1 1221PARTS LISTJ45678s+I25 ttlF- 16V,PART NO.42447481498500420862-AP424oE4657&7

28、74244343067DESCBIPTIONGapacitor-E lectrolytic 26ff) ltrlz6vBesistor-t50 O:aw loxPower Supply Assy.-ComplsteEyaletCapcitor-Elclrolytic 1fi)O rf /1 5VResistor-l80 $ll(w t o%lResistor*18 O.w tox,Capacitor-Electrolytic 125 tfr I 16VDiode (SD-1)Ery 1122& E-V 118042300MF2500 ilFPOWER SUPPLY PC BOARD ASSEM

29、BLYAMPLIFIER PC BOARD ASSEMBLYE-V 1122& E-V 1180X.BAY VIEW - COMPONENT SIDEREF. NO.1234567II101112131415161?18192A212324PARTSPART NO.8500777221L60328-BP20261-AD3843-AD38415207474307046019423654602S27259430444243?466?462891519546329461384614046774239346e2LISTDESCRIPTIONPower AmP Assy-ComPleteHeat Sin

30、kScrew Yr40 x %Nut (4-4O Hex)Lockwasher No. 4Fiber WasherMica lnsulatorTransistor-PowerResistor-68 kO%W (10%)Capacitor-EiectrolYtic 5 FFl 1 5VResistor-18 kO%W 1O%Terminal (Malco)Transistor-Driver (SE60o2)Capacitor-Ceramic .0047 F I 125VResistor-180 OYrw (10%)Resistor-5.6 Sr2w ( 10%)Transformer-Drive

31、rResistor-o47 Ozw ( t o2)Resistor*lo CIZ,W ltozlResistor-100 OZW (toX)Resistor-I .B kO%W (10/)Canacitor-Electrolvtic 1 000 !F/1 6VReiistor-56 k$%w (1o7)SCHEMATICoAUXSIGHTTUNERAUXLEFTTUNEB o-.HOo-Oe*,*.-.*(d- -F6orPREAMPLIFI ER PC BOARD ASSEMBLYE-V 1122& E-V 1I80X-RAY VIEW * CQMPONENT SIDEPARTS LISTT

32、 OUTREF. NO,PART NO.850064308443rM54M124641 I560844641346418272594693tmo46460364ffi17467S4650460314678465146954ffi25+0gr4636542308423?14?36?s606*244212J4567I910t1121314151617181920212223,A2527?8DE$CRIPTIONPreamp Assy,-CornpleteTransistor (5-1878 or GE 2N3900)Transistor (S84002)control-25 Klvolr*Cont

33、rol-25 k0,BatanceSwitch-SslectorControl*I00 kOBas$Control-so ksTrebteTerminal MalcoR6sistor-1 kSI:6w 1.1 o%IResistor-l .5 kfrTr.W ( 1 o%)Resistsr-2-? ktr rW I1o7Eesistor-3.3 kS,6W 1 O%Rsistor-47 kOYw (10%lResistor_6.8 sg|fi yy ( 1 Oyo)Resistor-8.2 kd?i,w (10%)Resi$or-22 kr%W (10%)Resistor-Z7 kOY.w (

34、1 0%lResistor-l 00 kttr%w ( 1 o%,fl esisto r -2.aMegrtr YzW 1 oo/.1Besistor-10 is4w 1o%Capacitor-ElectrolYtic 5 tr Fl15VCapacitor-220o PFeaBacitorj-.q47 $FCapacitor-Flat Foil .01 PFTubiagCapacitor*MYlar ,22 1ff6IF PC BOARD ASSEMBLYE-V 1159 & E-V 1180X.RAY VIEW _ COMP(0(96 5 i ; i: rri A i I CO*zID27

35、0-t-l-lTIiF3.3 t(5MFl5 v.T SIDEFM TUNER ASSEMBLYE-V 1159 & E-V 1180FRONT END TUNER ASSEMBLY (85008)REF.NO. PARTNO.1 423982 423993 270504 L6A3245 38437 4634DESCRIPTIONCapacitor-470 PFCapacitor-150 PFTerminal Strip 3T)Screw (440 x 7o Pan Hd.lLockwasher (No.4)B esistor-33 Slzrw t oz,)ABciF OutputGround

36、B+PARTS LISTIF PCB ASSEMBLYREF. NO.1234tr67IItot112131415.161718192021)23PAFT NO.463834601746046423G71520446054460s44693151884239646050461494236546654685152084239743A57469146056850052725942363DESCRIPTIONPorontiometer-1 o0 kO30%Flesistor-33 ko%w 1 oololResistor-l .5 kO%W (107o)Capacitor-.O1 ;JFTransf

37、ormer-lFFlesistor-S.6 k()7,w 1 o7oR esistor-270 IY,W 11 O/1Resistor-l kOY.W ( 1 Ol)Transformer-Ratio OetectorCapacitor-Ceramic 330 PFResistor-6.8 ksl,%w ( 1 07o)Resisrqr-l 50 SlY.w ( t oYo)Capacitor-ElectrotYtic 5 PFl1 5VResistor*33 ktrl%w (10%Resistor-33o kcl%w 1 07o)Choke-90 1trlCapacitor-Ceramic

38、4 PFDiode 1N34)Resistor-1O kr%w (10%)Transistor 2N35881l.F. AssembtY-ComPleteTerminal (Malco)Capacitor*Flat Foil .1 PFMATCHED FAIRMATCHED PARcLrt_,dd8+PECr-iz?-*1r-*-1IN.oorMFt8KSCAALUESCHEMATICMULTIPLEX PC BOARD AS$EMBLYE.V 1159 & E./ 1180X-RAY VIEW - COMPONENT SIDEPARTSPART NO.85009272554236546681

39、51944243746574306915247423634664425514304446046464946854239815206424024Wn46541524543A4542440469346149660646S3LISTDESCRIPTIONMultiplex Asy-CompleteTerminal MalcoCapacitor*E lectrolytic 5 trF/ 1 5VResistor*47 ko7,W (10%)Filter-38 kHz (PEC)Capacitor-Cerarnic 47OO pt / 1 25YBesistor-39 kS),Y,W ( 1o%)Dio

40、de 1N542 Matched PairTransformer 38 kHzCapacitor-Flat Foil .1 ftrResistor-2zo szw t tort tCapacitor-Polystyrene 2200 pFTransistor SE60O2Resisror*l.5 ko%W 10%)Resistor*I2 krl:4w 1o%Ftesistor-33o ks)%w 10%)Capacitor-470 pF 15%coil $CACapacitor-Ceramic 1OO0 pFFlesistor-l8 kStr%W (10%)fl esisror-47o duw

41、 ll OYolCoi 19 kHzTransistor (SE40021Capacitor*Polystyrene 50O0 pF (5ol)Besistor-1 kfJY,W (10%)Resistor-1 50 f,|/w t 0vTubingBesistor-1 ksl,%w 10%REF. NO.12345678I1011121314t5!611181g2A212223242526272A-l E MF t;Tr-Td,r*o*o,-i irf- s*I; -lr-. o:-l gMF -rfi-5-ue*i &efi+IOUTPUT PC BOARD ASSEMBLY(E-V 11

42、59 oNLY)X.RAY VIEW - COIVIPONENT SIDEPARTS LISTREF. NO.I2JPART NO.8513127259430674239146934ii0454667461494602846764236s4567II1011DESCRIPTIONOutput Drivsr Assembly-CompleteTerrninal MalcolDiode-PowerCapaeitor-E lectrolytic 640 lE l25VResistor-l kSl,%W ( 1 07olTransistor (SE4002lResistor-l80 O%w (lo7o)Resistor-1 50 Sr,y,w 1 0%Resistor*39o kSl,Y,W (1 0%lFlesistor*2.2 kSl%W ( 1 0/o)Capacitor-E lectrolytie 5 trtrl 1 0VCapacitor-Electrolytic 1 0OO lF/ 1 6VBesistor-1 o0 kS,%W (1 oyo)+18 v + r3,SV423834695EH0 JrJ5C.11213K+T640tfiMFro/r5tlE2.2Kx5Mrroot(BsE4002IKcIH5ESCHEMATIC1r