Hitachi D-980MU Service Manual

Text of Hitachi D-980MU User Guide:

• Hitachi D-980MU, i 1 I I I HITACHI SALES CORPORATIOÍ{ OF AMERICA Eastern Regional Office '1200 Wall Street West, Lyndhurst, New Jersey 07071 Tel. 201-935-8980 Mid-Western Regional Office 14fi) Morse Ave., Elk Grove Village, lll. 60007 Tel. 3î2-593-î550 Southern Regional Office 5î0 Plaza Drive College Park, Georgia 30349 Tel. 404-763-0360 Western Regional Office 401 West Artesia Boulevard, Compton, California 90220 Tel. 213-537-8383 HITACHI SALES CORPORATION OF }IAWAII, ITC 743-G Waiakamilo Rd., Honolulu, Hawaii96817 Tel. 808-841 -0431 Sweden Tel.08-98 52 80 HITACHI SALES I{O

• I English 5) Set the monitor switch to SOURCE position. Reduce the output of the signal generator (Adiust the attenuator of the signal generator ) so that the VTVM indicates -20 dB from the standard recording level A. Then, set the monitor switch to TAPE position and observe rhe VTVM (This indication is B dB). 6) Set the monitor &a

• Hitachi D-980MU, I o-sso il o-gr SYIIBOL-l{0 P-l{0 DESCRIPTI0l{ SY|,|BOL-NO P-N0 DESCRIPTIoN sEÉ l -c0NDUcr0Rs 0207 5!200ó4 IRANSISToR 2SC458D 0208 5t2l2l2 TRANSISIoR StLlCoN 2SD4ó88 l90r{r{Z 0 .9|J c209 5t2r2l2 ÌRANSISToR StLtCoN 2504ó88 teorlHz 0 .9f o2l0 5t200ó4 îRANSISToR 2SC4580 o2lt 5r206tt TRANSISToR StLtCoN 2SCt2lrc 801{ ozl? 5120ólt TRANSISIoR SlLtCor{ 2SCt2lrC 80H 0t0t 5t20ó43 TRANSISToR StLtCoN 25Ctló2 l5 0H THI 53{0?31 THERTI!STER tt2t02-2 LEO ' tED 4 LEO ' LEol00 tE0l0l LE0 I 02 LED' O O LED! O I LED'02 ct C ILR e2 E zLR et 5!a0t 12 LEo SLP224S 5!60101 RA0laTl0N DI0DE SLP-

• Hitachi D-980MU, zs( I v iA I 1 l l 4 I l I isi lu ,u' I . il le, te I i ,l l t v 'a il -', I English Next, connect the indicated signal source and meazuring instruments as shown in the connection diagram for each adlustment; then Perform the adiustment as described. The adjustment parts are shown in the diagram on the previous Page. 1. Tape speed (motor speed) adjust- ment Setting Playback mode Connection: MTT-111 3000H2(31 50Hz') Adjustment: Warm up the unit for approxirpately 20 minutes; then playback test tape MTT-I 1 I, 3000H2(3150H2*)

• Hitachi D-980MU, English 5. Bias current, record lewl adjust- ment Setting: Recording/Playback mode Connection: 5. Vormagnetisierungsstrom, Aufnah- mepegel Einstellung: Auf nahme/Wiedergabe Anschlússe: LINE lN jacks Abgleich: 1) HITACHI UD-ER C-90 Cassette verwenden. 2) Den Monitor-Schalter auf Posi- tion SOURCE stellen und ein 400 Hz Signal an den LINE lN Buchsen einspeisen. Danach das Dampfungsglied des Signalgenerators so abgleichen, daB die VU-Meter des Geràtes einen Pegel von O VU anzeigen. AnschlieBend den Monitor- Schal

• : ..., . Endi$. KEY TO ILLUSTRATIONS i t' I 2 3 4 5 6 7 8 I 't0 11 12 t3 't4 15 't6 17 f8 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 RECORD INDICATOR PLAYBACK INDICATOR PAUSE INDICATOR 3-HEAD INDICATOR TAPE COUNTER COUNTER RESET BUTTON AUTO-REWIND SWITCH BIAS FINE ADJUSTMENT KNOB METAL SWITCH METAL INDICATOR MEMORY SWITCH TIMER SWITCH VU METER (

• REPLACEMENT PARTS LIST Ersatzteilliste Liste de pièces de rechange sYi80L-N0 P-l{o 0EscRtPttoit SYllB0L-1,10 P-NO OESCRlPllOll CAPAC I fORS 0tlr 0lt5 012 0 Dtzt otz2 0l2lLR 0 12{ ot27 Dlr0 D 150 0t5t 0 200 D 201 D ?02 D?02 020 I D20{ D205 D20ó 0212 0 21! D2t4 D 215 0 21ó 02lt 0 218 Dt00 D t0l 0t0 I Dt02 0r0t LE 0t 04 lc I tC ILR lc z. IC 'LR lc { I ct00 LED

• Schéma Blockschema BTOCK DIAGRAM F t 0 t! e. o o f' o o t- -o o b G J I I ff J 6 I i àî9 Fq 2 r 6 NU -I at o F = o E z ó o ! I __l- ao< -.;Io ( -u e bì6 ONI F ) o 2 c) [,F tt >> o \t nF ""4 F f o oP g< ed oo F< u I È U t! ) q ,lgi -al d1 .Rè erÉ oNx ztt - -- q r.t R )).. -N l: oo; c rl nÍr u!31 f3l HI I i 9r =H=h ilF E g - .9 2 ts z U É 5

• Hitachi D-980MU, oll2 Qro4L Qtz DtO7,Ol.oe,DEt,Dt22 oilO OiltL 29Cl? 13 2SCr74o ?Sct t62 ts2473 25A673 2SD467 BrAs @NTRoL HEADPHoNEaMe voLT:sîAB ÉEói. swlrin-rnc ùúÍiùò Stromlaufplan DlOl L DzL Ot2O OsL l_. _.. __-ls_?tz3 ts2473 HV_46 esCtT+o DoLBy REcr FoR Dolay REcr FoR oot-.By iiÈci_ REc.- Éii. lúúp. Q207 02t r o20s 0208 2SC458p - D zsct2t 3C 2SD468B 2SD468B ------------5WmFIN6-ERT-- Schéma de montage Dt5t I s2473HC LED I LED2 LED3 LED4 sLP-248 SLP-248 SLp-22451 SLp-248 'tNPUT' "souRcE" -ourpur" 'REc" 0206 q209 02ro Q2t2 .2SD4688 2SD46AB 2cC458 2SCt2t3C ffi _Qlo Dro q

• Hitachi D-980MU, 8 57 (Fùr U, C, AU) 5s (Fúr W, BS, FS) 2 48 (Fùi U,-C) 47 (Fúr W, BS, FS, AU) 12 Viertelspurgerat, Stéreo Cassetten-Tonband (C-30, 60, 90) 4,75 cm/sek Wechselstrom-Vormagnetisierung, 85 kHz Wechselstrom - Lòschu n g >65 dB (bei 1 kHz) 20 bis 18.000 Hz 30 bis 17.000 Hz (+3 dB) 30 bis 17.000 Hz' 20 bis 20.000 Hz 30 bis 18.000 Hz (t3 dB) 30 bis 18.000 Hz' 20 bis 18.000 Hz 30 bis 17.000 Hz (+3 631 30 bis 17.000 Hz' 20 Hz bis 21 kHz 30 Hz bis r9 kHz (+3 dB

• Hitachi D-980MU, D-98Otrt ^ English 6. Dolby NR adiustment 6.-l Record Setting: Recording Mode Connection: 6. Réglage de Dolby NR 6.-1 Enregistrement Réglage: Mode d'enregistrement BÌanchement: TP1L, R (TP2L, R) ^ A Adjustment: Feed a SkHz signal into LINE lN, so that the voltage at TPl L, R becomes -30.4dBm. Then, set the DOLBY NR Switch to ON. Adjust RTl(L,R) so that the voltage at îP2L, R becomes -22.4dBm. 6.-2 Playback Setting Playback mode Connection: Réglage: Appliquer un signal de $H. ru" prises d'entrée de ligne LINE lN pour que le niveau de sortie aux broches TP1L. R soit égal

• Hitachi D-980MU, SCHEMATTC DTAGRAM (DTRECT DR|VE MOTOR SECTTON) Stron D3,04 [ rs2076x2 rsÍ AMPLI TUDE TEMI LIMITER ol 2S C 458D HALL CELL BIAS CURRENT CONTROL l-------r MAIN P.C.B L-----J INVERSE AMP ct2 lszrzs INPUT DIFFERENTIAL FORM PLASTIC cil o.( JI I D4 ct3 o.o22 I I I I I I I I I L I I I I -t. z2/16 c2 033/25 -22-

• Hitachi D-980MU, English Technische Daten : Bertúckung : lCs Transistoren FET Dioden LED Spursyrlcm : lonband : Bondgcrchwindigkcir : Aufnahmo:y:tom und Vormognctiríorungrlrrquonr : Lii*hryrtcm : Liirchtliimpfung : Frcquenzgong : UD-ER (NOR) UD-EX (CrOz) FeCr Metall Frcmdsponnungrqbrlond : ohne Dolby : mit Dolby : Glcichloufrchwonkungon : Eingongrcnpfindlichkcir ond lmpodonz : Mikrofon : Line in : Dl N (Auf nahme/Wiedergabe) : Aurgongrpcacl : Abschlu0impcdonz : Line-out : DIN (Auf nahme/Wiedergabe) : Kopfhórer : Klirrgrod : Úbmprrchdómplung : Zwischen Spuren : Zwischen Kanalen : Schnollvoilouf -odcr Rùckloufrcit : Nclzrponnung und-lrrriucriz : Lci:lung:oufnohmo

• Hitachi D-980MU, SERYICE TUIANUA1 Englirh This unit employs the UD-l standard mechanism. When inspecting and re' pairing this unit, read this together with the service manual (No. 11551 of the UD mechanism (UD-l). PREGAUTION; The following precartions strould bo obsened when relicittg. l. Since mEny perts in thc uniî have special safety mlabd charc- tsristics, ahrayr u$ gcruinc Hitrcfii's repbccmcnt partr. Espccially critical plrts in tho porvcr cimrit block should not be replad with th

• Hitachi D-980MU, 1) relschalter (Netischalter, Monitor, Vormagne- Dolby-NR) und die Pegeleinstellknópfe (Aus- pegel) kónnen I von der Frontplatte einfach der Vormagnetjsierungs-Feineinstellknopf, die pf fùr Rùcklaufàutomatik, die Dolby-Kalibrier- librierregler sindivon der Rúckseite abzunehmen, e entfernt wurdg. ll n, nachdem die Knópfe der Hebelschalter, die :r Cassettenfach{eckel entfernt wurden. lalibrier-Platine {AUU. Zl 10) i auben des Cassetten-Chassis entfernen, die in den reigt sind. ': ,Frh:h.gais

• Hitachi D-980MU, Englistr 4. Playback output and VU adjustment Setting Playback mode Connection: 4. Wiedergabepegel und Pegelmesser Einstelluqg Wiedergabe Anschlibse: 4. Róglage de niveau de roÉie ds lecture et dlindicatsurs de nireau Réglage: Mode de lecture Branchement: TP3L, R motetr :s I \ s IU VI LINE lN jacks VTVM Attenuator D-980n I Abgleich: 1l Monitorschalter auf Position SOURCE stellen. Ein 400 Hz Signal an den LINE lN Buchsen einspeisen und den Signalge- nerator einstellen, bis an den Stiften TP3L, R eine Ausgang- sspannung von 0.775

• Hitachi D-980MU, D-980 trt CIRCUIT BOARD DIAGRAM : Ground Printplattenansicht : Signal, *B SWITCH P.C.B. l{7o8 / z, DRIVING COIL P.C.B. 3-HEAD INDICATOR P.C.B. -24- Schéma de plaque de càblage : Component side pattern ldoll òoll .l.m.ni. D îhql l.rml.or. rith r.d pini. or. cmaatad !o tla Dollrrn tl harr.) on th. PC boord I ./ ,J fop Vlar J

• Hitachi D-980MU, t Í I i ll I' rì1_ l-- L ! '! - t . ' CAUTION AGAINST FUSE REPLACEMENT J ' FOR CONTINUED PROTECT]ON AGAINST FIRE HAZARD, REPLACE ONLY WITH SAME TYPE AND SAME RATING FUSE IN ACCORDANCE WITH THE FI.JSE SYMBOL LAVEL. Tàe follówing js indication of the fuse symbol label which is affixed adiacent to the fuse in the equipment. * Example This symbol indicates Slow Operating Type 14,250V Fuse. This symbol indicates Slow Operating Type 24, 250V Fuse. ',.. PRECAUTIONS A PRENDRE POUR LE REMPLACEMENT DE FUSIBLE Pourassureruneprotectioncontinuecontrelesrisq

• Hitachi D-980MU, Schéma de montage Stromlaufplan D5 t s 2473 TEMPERATURE Q2 Q3 o4 250468 C DRIVE AMP Q5 2 S8562 C DRIVE AMP t 2SD468C 25B562C DRIVE AME DRIVE AME -t I I I I B CLASS AMP SLI CER :ff c5 o,t5/25 DRIVE COIL -23-

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