Hitachi-HGE2100-eq-sm 维修电路原理图.pdf

No. 338 EGFHGE-2lOOCONTENTS . INHALT . SOMMAIRESPECIFICATIONS . TECHNISCHE DATEN .sPEC|FICAT|ONS. . 1,2FEATURES . MERKMALE . CARACTERISTIOUES. 3DISASSEMBLY AND REPLACEMENT. ZERLEGUNG UNDAUSTAUSCHE DEMONTAGE ET REMONTAGE. 3ADJUSTMENTS . EtNSTELLVERFAHREN . Rcr-ne es. +BLOCK D|AGRAM. BLOCKSCHEMA. SCHEMA. 4PRINTED WIRING BOARD . PRINTPLATTEN .PLAN DE 84SE. . 5CIRCUIT DIAGRAM . SCHALTPLAN .P|-AN DE C!RCU|T. . 6REPACEMENT PARTS LIST. ERSATZTEILLISTE.TABLEAU DES PtECES. . 7FRONT AND REAR PANET.VORDERE UND HINTEREBEOIENUNGSTAFEL. PANNEAUX AVANT ET ARRIERE. 11SAFETY PRECAUTIONSThe following precautions should be observed when servicing.1. Since many parts in the unit have special safety related characteristics, always use genuine Hitachis replacementparts. Especially critical parts in the power circuit block should not be replaced with other makers.Critical parts are marked with A in the schematic diagram and circuit board diagram.2. Before returning a repaired unit to the customer, the service technician must thoroughly test the unit to ascertain thati is completely safe to operate without danger of electrical shock.SPECIFICATIONSlnput sensitivity/lmpedanceRated output/lmpedanceTotal harmonic distor-tionFrequency responseSignal-to-noise ratioEqualizer center fre-quenciesMIC 1 mV/8 kohms SOURCE/TAPE 15O mY/47 kohms150 mV/4 kohms0.05% (1V output)20Hz-2O kHz -+2 dB70 dB (150 mV input)9 elements 63 Hz, 125 Hz,25OHz, 5OO Hz,1 kHz,2kz,4kHz,8kHz,16kHzVariable range of adjust-mentEcho timeDelay timeMIC jacksTape systemsPower supply voltagePower consumptionDimensionsWeight-r 1O dBvariablel sec.-4sec.variable 20 msec. - 1OO msec.21AC1 20V 60 Hz, -22OV 50 Hz,-24OV 50 Hz, l 10-120l|22O-24OV 50/60 Hz10w435 (W)x 83 (H)x 225 (D) mm3ks* All specifications for this unit apply with a flat equalization.SPECIFICATIONS AND PARTS ARE SUBJECTTO CHANGE FOR IMPROVEMENT.GRAPHIC EOUALIZERJuly 1982 TOYOKAWA WORKSRadioFans.CN 收音机爱 好者资料库IHITACHI HGE-21O0SICH ERH EITSMASSNAH M ENTECHNISCHE DATENEingangsempfindlich-keit/lmpedanz MIC 1 mV/8 kOhm SOURCE/TAPE 150 mV/47 kO mNennausgangsleistunl /+10dBvernderlich 1 Sek.-4 Sek.vernderlich 20 mSek. - lO0mSek.21-12OV 60 Hz, -22OV50Hz,-24OV 50 Hz, - 11O-12OV|22O-24OV,50/60 HzLeistungsaufnahme 1OWTabmessungen 435 (Blx 83 (H)x 225 (T) mmGewicht 3 kg* Bei allen technischen Daten dieses Gertes handelt essich um Werte bei linearer Entzerrung.Bei Wartungsarbeiten sind die folgenden SicherheitsmaBna1. Da vershiedene Teile dieses-Gertes Sicherheitsfunkti iginal-Hitachi-ersatzteile verwenden.Kritische Teile im Netzteil sollten nicht durch hnliche ersetzt wer:den. Alle krilisehen Teilesind im Schaltplan und im Diagramm der Schaltplatinen nnzeichnet.2.yor der Auslieferung eines refarierten Gertes an den Kunden muB derWartungstechniker das Gert einer grndli-chen prfung unteiehen, um sicherzustellen, daB sicherer Betrieb ohne die Gefahr von elektrischen Schlgengewahrleistet ist.lmpedanzKlirrfaktorFrequenzgangGeruschspannungs-abstandEntzerret-Mittenfrequenzen150 mV/4 kOhmO,O5% (1V Ausgang)20Hz-2O kHz -r2 dB70 dB (150 mV Eingang)9 Elemente 63 Hz, 1 25 Hz,25OHz, 500 Hz, 1 kz, 2 kz, 4 kHz,8kHz,16kHzVernderlicher Einstell-bereilchEchozeitVerzgerungszeitMikrofonbuchsen (MlC)BandsystemStromversorgungPRCAUTIONS DE SCURITLes prcautions suivantes doivent tre observes chaque fois quune reparation doit tre faite.1. Eiant donn que de nombreux composants de Iappareil rossdent des caractristiques relatives la scurit, utiliseruniquement des pices de rechange dorigine Hitachi pour effectuer un remplacement. Ceci se rapporte notammentaux pices critiques du bloc dalimentatin qui ne doivent en aucun cas tre remplaces par celles dautres fabri-cants. Les pices critiques sont accompagnes du symbole A dans le schma de montage et sur le schma de pla-que de cblage.2. vant de returner Iappareil rpar au client, le technicien doit procder un essai complet pour sassurer quil neprsente aucun danger de chocs lectriques.SPECIFICATIONSSensibilit dentre/impdanceSortie nominale/impdanceDistortion harmoniquetotaleRponse en frquenceRapport signal/bruitFrquences centralesdgalisationMIC 1 mV/8 kohms SOURCE/TAPE 15O mYl4l kohms150 mV/4 kohmsO,O5% (1V sortie)20Hz_2O |12 +2 dB70 dB (150 mV entre)9 gammes 63 Hz. 1 25 Hz,25OHz, 5OO Hz,1 kHz,2k1z,4kz,8kHz,16kHzRglage de gamme va-riableDure de lchoRetardementEntres MlcTypes de bandeConsommationDimensionsPoidsr- 10 dBvariable 1 sec.-4sec.variable 20 msec. - 100 msec.21Tension dalimentation - 12OV 60 Hz. -22OV 50 Hz,-24OV 50 Hz,110-120V1220-240V50/60 Hz10w435 (L)x 83 (H)x 225 (P) mm3kg* Toutes les spcifications de cet appareil sont donnespour une galisation Plate.2RadioFans.CN 收音机爱 好者资料库FEATURES . MERKMALE . CARACTERISTIOUES1. The audio frequency spectrum is divided into9 bands in steps of 1 octave with 1 kHz asthe basic central frequency.2. Large dynamic range semiconductor inductorsare used in the resonance circuits.3. Built-in electronic echo circuit4. Convenient equalizer selector switches5. Two microphone inputs. Microphone mixingrecording possible.6. Mixing balance adjustment provides conti-nuous variation of mixing ratio.1. Der Audio-Frequenzumfang ist in 9 Bereiche inSchritten von 1 Oktave mit 1 kHz als Grund-mittenf requenz eingeteilt.2. ln den Resonanzschaltungen werden Halblei-ter verwendet, die einen groBen Dynamikbe-reich aufweisen.3. Eingebaute elektronische Echoschaltung4. Leicht zu bedienende Entzerrungswahlschal-ter5. Zwei Mikrofoneingnge. Mikrofonmischauf-nahmen sind mglich.6. Die Mischbalance-Einstellung gewhrleistetstndige Vernderungen des Mischverhltnis-ses.1. Le spectre des frquences audio est divis en9 gammes, par tape de 1 octave sur une fr-quence centrale de base de 1 kHz.2. Des inducteurs pour semiconducteur gammedynamique large sont incorpors aux circuitsde rsonance.3. Circuit dcho lectronique incorpor4. Slecteurs digalisation a accs pratique5. Deux entres pour microphone. Possibilitdenregistrement avec mixage microphone.6. Le rglage dquilibre de mixage permetdobtenir une variation continue du rapport demixage.DISASSEMBLY AND REPLACEMENT.ZERLEGUNG UND AUSTAUSCHE .DEMONTAGE ET REMONTAGEO Removing the printed wiring boardsO Ausbau der LeitterplattenO Dpose des plaquettes circuit imprim3dxoDT (x2)3dX6DT (X2)3x6DT flat head (x5)oXlanhead(xR-3dx60T (x2).-_:-=.-26xg pa neaJV1 txsl ,/DT (X23x6DT flat head (x2)3x6DT,r,*.8Ic-3dx6DT (x3)Fis.1Abb. l-3-HITACHI HGE-21OOADJUSTMENTS . EINSTELLVERFAHREN .a BBD Output Clock Canceller AdjustmentSet the range of the A.C. voltmeter to 1OO mV (Max), Connect topoint A, and set Time/cm on the oscilloscope to 0.5 msec. Ob-serve the waveform on the oscilloscope, and adjust R585 suchthat the BBD output clock elements are eliminated (adjust togive the central waveform in Fig 2)O BBD-Einstellung des AusgangsuhrunterbrechersDas Wechselstrom-Voltmeter auf 1OO mV (max) stellen, anPunkt A anschlieBen und Zeitlcm auf dem Oszilloskop auf 0,5mSek. stellen. Die Wellenform auf dem Oszilloskop beobachtenund den R585 so justieren, daB daB die BBD-Ausgangs-uhrelemente eliminiert werden (so einstellen, daB die in Abb. 2gezeigte Mittenwellenfrom entsteht)O Rglage dannulation horaire de soie BBDRgler la gamme du voltmtre de courant secteur 1OO mV(maximum), raccorder en A et rgler le temps/cm sur loscillos-cope 0,5 msec. Tout en observant la forme de londe sur Ios-cilloscope, ajuster R5B5 de sorte que les caractristiques hor-aires de la sortie BBD soient annules (ajuster de manire ob-tenir une onde centrale du type de celle de la Fig. 2).BLOCK DIAG. BLOCKSCHEMA . SCHEMAFig.2Abb.2Fig.3Abb.3I(s60 Is502SOURCE swtc60 I NJM4558DXs60 rJUMPMIC sw& UNE sws603LINE swlMIXING BALANCEADJMIC LEVEL AOJ.o-re!-IAOJR5A Itok*_+tc50 INJM45s8OX(%)I Rsaa 200k*-Irc5os(%) tc5o5(%)s50t-REVERBR586 tokREVERA LEVEL ADJ- I 2oV 6OHz-220V-24OV sOHz- I tGl2OV/-22-24ov 5o/6otu 52 StffisESELECTOR sw PToOIsw POVIERI rilNs(to. Asia & LatinAmerican countries, elc Check that exposed parts are acceptably insulatedfrom the supply circuit before returning the instru-ment repaired to the customer.O Checking method- Power switch is set lo ON -Next, measure the resistance value between theboth poles of attachement cup (Power supplyplug) and the input terminal (outside) of rearplate and check that the resistance value is 500kohms or more.lnsulation tester-4-HITACHI HGE-210OPRINTED WIRING BOARD . PRINTPLATTEN . PLAN DE BASE :Earth, :Otherrot_ll-to=-lREC PLAY-5-A POWER SUPPLY CORD2eowen rRANSAcaourLEr X8l%*.-.VS: for SwizerlandZS, EW i for W. Germany,Asia & LainAmerican countries.etc0(1iltl(ro, vs onry)-5-CIRCUIT DIAGRAM .SCHALTPLAN . PLAN DE CIRCUIT7 -tflfiSame as Lchotor2SD330ASABo8022585lrtAtSTABoR620L 47K IIL#ntAMP INRchIt:c6061 R6051l/50 t6KR648L55 assrL6.8Ko6r2Lc646Lo.rE 2R5O/ - R5l 2c 506-c5r t, ct6R58tSame as MIC I (MlC 2)FEED BACK AHITACHI HGE-21OOc6201n620L 47K t/50Deot ERB12-OtRc 53847/tEfor ZS only , Proot- i-lSUPPLY CORDF, J-2?O-24r50 H:ac r 2OV!oaI.9IE0aJAMPOUThcAMPOUTRchRECRchR565 47KR557 47Ka6l0L-6t8LSEMI-CONDUCTORINDUCTORt/50EED BACK AMPtc504MNStOtCLOCKGENERATOR-6-st-i-rtlcoor:s* 136:R563 L6.AK;t,tool3slt-looER$7,64K R54o GaxR543 3.3K R54A |OOK1c505/2)NJM4558OX cs34OUTPUT FTLTER 22ooPR555 22xc539a20PD503 ts2473HITACHI HGE.2OOREPLACEMENT PARTS LIST . ERSATZTEILLISTE . TABLEAU DES PIECESr$-SYMBOLNOPART NODESCRIPTIONCAPACITORSc501c502c503c504c505c506c507c508c509c510c51 5c51 6c520c521c522c523c524c525c526c527c528c529c530c53 1c532c533c534c535c536c53lC53Bc539c540c541C6O1 LRC6O6LRc6 1 OLRC61 1 LRc6 1 2LRc6 1 3LRc61 6LRc61 7LRc620LRc62 1 LRc622LRc623LR025241 1025281 1025281 1o252521025252102487 1602487 16025281 1025281 10248132o2525250248132o252A1 10248732o252525o249521025281 1025281 10248132o252522024952l025281 1o216013o2760130244101025241 1025281 1024410902525210249521o252521025281 1025281 10244107024410502441090248132025281 1024410502441090248124025281 1o25252502491260252815025281 1ElectrolyticCeramic, discalElectrolyticCeramic, discalElectrolyticElectrolyticCeramic, discalElectrolyticCeramic. discalElectrolWicMylar, filmMylar, filmCeramic. discalElectrolyticElectrolyticCeramic, discalElectrolyticCeramic, discalElectrolyticElectrolyticElectrolyticCeramic, discal()Ceramic, discalElectrolyticCeramic, discalCeramic, 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1o2528800252875o25288002528791276232o252880121621 102528781215215025281112752130252815121621 11215231121621312752151274235t276212t274214121521602441810244181024417 1o2160t 1024417 1024417 1025273502527350252631025263102441810244181o25263202438990243901ElectrolyticElectrolyticElectrolytic5ElectrolyticMylar. filmElectrolytrcMylar, filmElectrolyticMylar, filmElectrolyticMylar, filmElectrolyticMylar, filmMylar,fm(forUSA &CanCeramic, discal I(exceptUSA &(1pFlpFlOpF4.7 1tFO 47 1tF47 pF33pFO 18pF -+5o/o4.7 pFO.1 1tF +5%2.2uFOO47 pF -r5o/olpFOO22pF -+1a/oO 47 1tFO 1pF +5o/oOOl2pF -r5o/oO22pF !.5o/oOO47pF -+5%56OOpF +5%O.1SpF +5o/o33O0pF -+5%O O68sF -+ 5%ol1tF 33o 1pF 33*o.olpr ff;nO.1 1tF +1O%O O1 1tF $oouool pF ff;r47OpF47OpF1 OOpF1 OOpFo.l pF _*r3o.lpF 1322OpFOO1 uF +trda)O.o1pF f;oozlanada)50v50v16V50v50v50v50v50v50v50v50v50v50v50v50v50v50v50v50v50v50v50v50v50v50v50v50v50v50v35V35V25V25V16V16V25V125V400vRESISTORSR502R503R504R505R506o1 29579o129647o1 2955 Io1 29635o1 29601Carbon film()Carbon 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_r5To4lkA +5o/o39kO _+5%39kfJ -+5%33kO -r5%IOOkO -ts5%47kO +5o/o39kO -+5%33kO +5o/o47OkO +5o/o22kO +5o/o39kO +5%22okg .5%15OkO -r5%4jke _r5%1OOkg r-5%IOOkO -+5%47kA +5%t47kQ t5%sRD 1/4PtsRD 1/4PsRD 1/4P()SRD 1/4PISRD 1/4PsRD 1/4PsRD 1/4PIsRDl/4PsRD 1/4PsRD 1/4PSRD 1/4PsRD 1i4PsRD 1/4PSYMBOLNOPART NODESCRIPTIONR6 1 2LRR6 1 3LRR6 1 4LRR61 sLRR6 1 6LRR6 1 7LRR62OLRR62 1 LRR622LRR623LRR624LRR625LRR626LRR640LRR641 LRR642LRR643LRR644LRR645LRR646LRR647LRR648LRR649LRR65OLRR651 LRR652LRB653LRR654LRR655LRR656LRB657LRR658LRR659LRR66OLRR66 1 LRR662LRR663LRR664LRR665LRR666LRR667LRR668LRR669LRR67OLRR67 1 LRR672LBR673LRR674LRR675LRo1 29667o1 2961 Io129641o129661o1 2963501 29669o129647o1296470129647o129601ol 296 1 5o1296110129647o1 29563o1 29581o1 295810129621o1 29563012958.10129581o129621o1 295490129581o1 29581o129621o1 29531012958ro1 2958 1o129621o129547o1 29581o1 2958 1o129621o1 29549012958ro1 2958 1o12962101 29567o129581o1 29581o129621o1 29567o1 29581o1 29581o129621o129567o1 29581o1 29581o129621Carbon filmCarbon filmCarbon filmCarbon filmCarbon film()SRD 1/4PSRD ,I /4PsRD 1/4PtsRD 1/4P180kO +5o/o56k12;r5%27kO +1Vo1OOkO+5%15kO t-5%22OkA +5%47kA -r5%47kQ +5o/o47kO +5%lkl) +5%3 gkl2 t5%41kO -r5%47kQ -+5%12OA +5o/o680l) t-o/o68012 +5o/o6 8kO -+5%12OQ -r5%68012 -tss%68012 -r5%6.8kO -r5%5612 +5%680lJ +5To68012 -+5%6 8kO +5o/o1OO +5o/o680l) +5o/o680t2 _r5%6 8k!2 -r5%47 A +5o/o68012 +5%680lJ +5o/o6 8kO +5o/o56.0 +5%68012 +5%6g012 -+Eo/oSRD 1/4PSRD 1/4P-8-SYMBOLNOPART NODESCRIPTIONR8(l1$RBO4R902R903R904R910fR9l 4R915fB9 18R9190129581t0129581o1 29653o129631o12962101 29603t01 29603o1 29607s01 29607o1 29603Carbon filmtCarbon filmCarbon filmCarbon filmCarbon filmCarbon filmfCarbon filmCarbon film()Carbon film680f) -r5o/ot680l) -+5o/o82kO -r5%l OkO +5o/o6 8kO !5%1 2kQ +5%oI12kQ !5%1 8kO -r5o/os1 8kl2 -+5%12kO +5%sB