Hitachi SR-2004 User Manual Download

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Summary of Contents for SR-2004

Page 1: ...mage response ratio Spurious response ratio IF response ratio Alternate channel selectivity NARROW WIDE Capture ratio AM suppression Stereo separation Sub carrier suppression SeA rejection Muting threshold Antenna input 88 108 MHz Mono 8 7 dBf 1 5pV Mono 12 5 dBf 2 3pV Mono 75 dB Mono 0 15 Mono 0 1 Mono 0 25 Mono 0 15 Mono 0 07 Mono 0 2 30 Hz IS kHz C aG 115 dB 120 dB I 5 dB Stereo 24 dBf 8 9pV In...

Page 2: ... dB 20llY IHF ext Antenna 70 dB 90 dB 40 dB 50 dB Ferrite and Separate terminal 200 watts per channel min RMS at 8 ohms from 20 Hz to 20 kHz with no more than 0 08 total harmonic distortion 230W ch 230W ch 8 ohms I kHz T H D 0 08 230W ch 230W ch 4 ohms 1 kHz T H D 0 1 400W ch 400W ch 8 ohms 10 Hz 40 kHz PHONO 30 Hz 15 kHz 0 2 dB AUX 10 Hz 40 kHz 1 5 dB Less than 0 08 Less than 0 03 0 08 0 03 2 5 m...

Page 3: ...for improvement CARACTERISTIQUES TECHNIQUES 85 dB 45 dB 1 dB 60 dB 50 dB 1 kHz 70 dB 70 dB 28 dBf 1411V 300 ohms ponderes 75 ohms non ponderes Mono 0 15 Stereo 0 25 Mono 0 1 Stereo 0 2 Mono 0 25 Stereo 0 3 Mono 0 15 Stereo 0 25 Mono 0 07 Stereo 0 1 Mono 0 2 Stereo 0 3 30 Hz 15 kHz e B 115 dB 120 dB 115 dB SECTION FM Bande de frequence Sensibilite utilisable Seuil de sensibilite 50 dB Rapport signa...

Page 4: ...ble de commande du volume position 33 dB 530 1 605 kHz 370llY m S B 20 dB 20llY Antenne ext IHF 70 dB 90 dB 40 dB 50 dB Antenne de ferrite avec borne separee 200 W ch 200 W ch 8 ohms 20 Hz 20 kHz T H D 0 08 230 W ch 230 W ch 8 ohms I kHz T H D 0 08 230 W ch 230 W ch 4 ohms 1 kHz T H D 0 1 400 W ch 400 W ch 8 ohms 10 Hz 40 kHz PHONO 30 Hz 15 kHz 0 2 dB AUX 10 Hz 40 kHz 1 5 dB 0 08 0 03 0 08 0 03 2 ...

Page 5: ...ly the current limiter circuit is actuated the operation of the power amplifier is not shut down 4 Before taking off the couplers from the PRE OUT and MAIN IN terminals on the rear panel make sure that POWER switch is set to OFF and that the attenuator volume is set to the lower position 00 5 Set the MIC MIXING volume control to OFF when you are not using the microphone total et un circuit de limi...

Page 6: ...ether with the signal meter 10 3 gang Variable Capacitor for High Selectivity AM Reception A 3 gang variable capacitor is provided for achieving high sensitivity and selectivity during AM reception 11 Ceramic Filter ICs in AM Tuner A ceramic filter is employed in the AM tuner to obtain enhanced selectivity and AGC characteristics The exten sive use of Ie s improves stable reception 12 Two Large Ea...

Page 7: ...phonique La detection quadriphonique a l aide de nombreux cir cuits integres permet d obtenir une bande passante tres large et une distorsion faible HITACHI SR 2004 10 Three Speaker Systems Connection Three speaker systems can be connected to the unit and selected with switches 11 Electronic Protection Circuit Hitachi s original highly reliable electronic protection circuit is built in to protect ...

Page 8: ...nels 5 Attenuateur calibre commande de volume Un attenuateur calibre de far on tres precise et a 32 points de contacts a c1iquets est utilise pour la com mande du niveau sonore Ceci permet de proceder a des reglages nombreux et plus faciles pour obtenir Ie niveau desire de sortie en puissance 6 Commutateur de sourdine audio Ce commutateur est tres utile quand on veut abaisser Ie niveau du son sans...

Page 9: ...hen the input signal is large QS and Q8 operate in addition When the positive input signal at normal level is impressed Q2 and Q6 turn ON and current flows from the B1 power source When the input signal level increases and reaches more than B1 9 HITACHI SR 2004 QI and QS also turn on At this time since the emitter potential of QS exceeds B1 the current does not flow from B1 but only from B2 When t...

Page 10: ...to protect the transistors Q714 Q717 from damage Especially when the voltage VCE between C E of the output transistors is too high the transistors are likely to be damaged when excessive collector current Ie flows In this set the protection circuit is design ed to operate when Ie and VCE exceeds a certain value For protection of Q714 and Q715 Ie is detected by R729 and VCE is devided by R721 and R...

Page 11: ...w voltaoe power supply 1M Allmentat Ion basse tension BIC 40 2V High volt power supply Alimentation haute tension 82 98 8V Fig 2 R703 It II C N IN I 82 t J 1 NPN To the NPN driver I Au transistor de 01 Vldle puissance NPN I I PNP To the PNP driver Au transistor de puissance PNP I T I 82 For temperature compensation of the Idle current ot output tage Pour compensation de temperoture de courant dewa...

Page 12: ...our reproduire des messages it haut niveau sans dis torsion cependant et dans ce cas une haute tension est appliquee au transistor de sortie pour que l alimentation soit plus large Des etudes ont ete faite pour savoir comment on peut parvenir it des puissances de sortie elevees sans augmenter la consommation des transistors de sortie pour assurer une plus grande efficacite C est la raison pour laq...

Page 13: ... puisse tre constante Quand la tension d alimentation chute Ie circuit se met en fonc tion dans Ie sens inverse pour maintenir Ie courant dewatte al etat constant HITACHI SR 2004 6 Circuits de protection 1 Circuit de reglage silencieux Cet appareil contient un circuit de reglage silencieux qui permet de mettre Ie relais hors fonction pendant environ 3 6 secondes apres la mise en fonction de l inte...

Page 14: ...interrupteur d ali mentation Circuit de protection de 1 Aucun son n est obtenu Court circuit des Mettre l interrupteur d alimenta 2 transistor d alimentation 2 Tension anodique de bomes de sortie tion aI arret s assurer que Ies Circuit de protection SCR551 de OV 20V d enceinte bomes d enceinte en sont pas ASO en conditiones normales courtcircuitees et remettre sous tension apres un delai approxi m...

Page 15: ...W B 0 d I I e electrolumj nlscente P W B J j i 7 B _ _ 0 _ oltom plolo t J 8 Plaque inferieure I C I _ 4 J c til Hexagonal wrench Cle a tete six pans Upper cover Cabinet a Ventilator Couvercle superieur Front panel Escutcheon Panneau avant Removing the upper cover front panel bottom plate Deposer Ie couvercle superieur Ie panneau frontal et la plaque inferieure Removing the meters Retirer les comp...

Page 16: ...ance Switch P W B Commutateur P W B 341x6 CT screw X2 Relay P W B Relats P W B 9 nut 3 x 6 CT screw X2 MAl N P W B Ampliflcateur principal P W B 3 x6CTscrew X2 3 x 20 screw X e Fig 7 e 3 x 6 CT screw CX6 DC supply P W B o alimentation C C I DIN P W B Il Tone P W B Pretona lite P W B Il 16 P W B 3 x6 CT screw CX4 AC P W B GA P W B Fig 8 e ...

Page 17: ...0705L 1 R748L B E 0703L R711L _ 0710L 07051 0704L 07 OpL R712L 1 B E B E B E LQ QJ J VA70IL C712L 0 L 0 20702L C720L Z0704L R740L hR72 6L L R735 1 w r D71 I LE j 1 I r R 725L HI R720L B E i 070BL I i o J l r t o o J E r C7191 i I I r i r CD I I 1 1 I Plier Pinoes radio 6 8 9 I Caution In order to keep the distance between the legs of the relay RY901 on the AC PW B and the chassis cut the legs a bi...

Page 18: ...AFC OUT AFC OUT 19 TP3 B I 229 tlU I C304 1M 3 3u50VR3 0415 R3141 2Klli2W STEREO IND 1 SIND 20 Q 03 3SK 590r3SK39 C22 8P 0 5P RH tFC IN r lJ IN34A 152076 0152 0154 Q2 3SK590r3SK45 RI621K DI54 R213330 C 56 I CI560 047 J I I I I O 047 lJ 41 I r 2 f AM HAI211 HAII37 35K45 2SK55 152692 152076 TP 6 0 II I I L3 RI53 150 DI56 IFRONT END O 3 K lh I I L Q 11 0 FEOOlc247P CH i 19ft I I AM5 AM6 _ _ 24 8 AM7 ...

Page 19: ......

Page 20: ......

Page 21: ...1 DOlO 0009 0008 0007 0006 D005 0004 Cl LoU AUX PHONO 2 PHONO 1 FM AM AUTO LOCK FM STEREO SP C SP B SP A J 8 AMRF 0 GND AMLOC AM GND AM 5 METER GND TPA AM 8 8 AM 001 0 AGe MUTE IN TP TP2 J FIXi8 MUTE OOT AFC CENTER METER COMMON SEPADJ MODE SEP ADJ SIGNAL MFTER MULTIPATHlV FMt R OUT 22 GND 23 T l I ...

Page 22: ...B EV Power amp Dynaharmony Series Pawe amp Dynaharmony Ser e 1 MAIN IN ActiVeL J f rIt P HI LI OUT PRE lOUT I 8alanoe REC2 RJ REC 2 Ll o I U I J __ J J ir t Ih F_ I i w I Low g g A 1r 0 1 EmllCe I rol AXil o r o FOllower I 1 1 J I I AF Amp AUX1 r I I guroove III I M LI sw Hlgn I MIC Lf J j 1 r PLAY 2 LJo i2 or AF AmP l sw Volume REC I Ll ttt j ADAPTOR Louoness l OUT IN sw i PLAyl L Audio Muting SW...

Page 23: ...EAR PHASE FILTER Cl il GN034 1 I C204 I cO Z I GIlD IN13 rn N W TP 5 TP I I I ra TP2 t Yt C HA 1137 MPX PLL H 32 B M l j 2 0 76kHz VCO adj c I I TP 3 I R320 I C 3 0 SCRI OUTPUT LNVEL I F 9 FIX 24 0 _ oFC CENT C Z cp TER Q r 1 C 101 R319 i to Ou Q 2 Tn G L vEL m jIP gWr C Q G 0 l SeRI TRANS I8l g G m R323 I8l SEPARATION R24 0 IF BAND NARRO I J SAN 27 0 _ I r FM S METER D 1 1 501 __ INN 15 I 32 n 5 ...

Page 24: ...T201 Straight line S cllrve T 2 COIJrbe S 10 7MHz lower S curve lK O 1 l upper Straight line Covering REC out fl8MHz 88MHz not necessa ry or SP out 3 Guipage 0 108MHz 108MHz TC 5 ANT Terminal 90MHz 90MHz L 1 2 3 V max 4 Tracking 106MHz 106MHz TC I 2 3 4 Alignement 98MHz 98MHz L4 REC out or SP out T201 bLJ 5 Discri mcs pointer center lower without signal T201 Distortion 6 Distortion 98MHz 98MHz min...

Page 25: ...u canal gauche Let Ie signal pilote ajuster R322 pour que la forme d onde de sortie du canal droit R soit minimale Regler Ie selecteur de bande IF sur la position NARROW et regler Ie signal du canal gauche Let Ie signal pilote puis ajuster R323 pour la forme d onde de sortie du canal droit R soit minimale Rendre R322 et R323 optimum pour que Ie niveau de crete du signal de canal gauche L soit egal...

Page 26: ...llation I l25Jg o lkQ FM IF IN I AM TP4 l vvv Model SR 2004 e Model SR 2004 FM TP2 AM TP6 tJ I I I QIBIB 00 L J I II lOUT Fig 13 FM IF Discriminator and AM IF alignments FM Step 1 2 AM Step 1 Reglages de discriminateur FM IF et AM IF Operations 1 2 FM et 1AM AM Signal generator k tOP antenna AC Voltmeter Generateur de signal AM en _ _boucle Voltmetre 11 courant alternatif Oscilloscope Fig 14 AM fr...

Page 27: ... DE SON Fig 19 DC volt meter 0711 IolII BlL OUT BlL B HI B iHl Fig 18 R745R 000 D J MAIN P W B L 000 D o MAIN P W B R R745L IDLE CURRENT ADJUSTING POINT IDLE CURRENT ADJUSTING POINT e Test conditions FUNCTION Free VOLUME Minimum Item Measuring instrument Point to be measured Adjust Value adjusted Idle current DC voltmeter Fig 18 R745L R lImV 4 4mV SOmA 20mA Conditions pour les essais FUNCTION Libr...

Page 28: ...e C A aux bornes de haut parleurs 5 Ajuster Ie niveau de sortie OSC et la commande de volume pour que la tension de sortie aux bornes de haut parleurs soit de 28 3V efficaces sans que les haut parleurs ne soient branches Designation Appaeil de mesure Reglage Course de Iaiguille Courant dewatte Voltmetre acourant alternatif R584L R 100W e METER ADJUSTMENT METER SENSITIVITY ADJUSTING VOLUME R584L R5...

Page 29: ... Ceramic discal O OIIJF g 25V C707L R 0247848 Ceramic discal 56pF 5 500V C205 0245017 Ceramic discal 0 0IIJF g 25V C206 0245017 Ceramic discal O OIIJF g 25V C709L R 0252831 Electrolytic 100IJF 50V C710L R 0247845 Ceramic discal 43pF 5 500V C208 0245017 Ceramic discal O OIIJF g 25V C711L R 0243506 Ceramic discal 27OpF 10 500V C209 0245018 Ceramic discal 0 0221JF g 25V C712L R 0243507 Ceramic discal...

Page 30: ...R 0275011 Mylar film 0 01IlF 10 SOY C618L R 0275013 Mylar film 0 022IlF 10 SOY C7S0 0276011 Mylar film 0 1IlF 10 SOY C619L R 0252880 Electrolytic 4 71lF SOY C7S1L R 0252621 Electrolytic 10llF 2SV C620L R 0248664 Ceramic discal lSpF S SOY C7S2L R 0252225 Electrolytic 471lF 6 3V C621L R 0252880 Electrolytic 4 71lF SOY C7S3L R 0248724 Ceramic discal 100pF 10 SOY C622L R 0252225 Electrolytic 471lF C7S...

Page 31: ...0129639 Carbon film 22k n 5 SRD1 8P CO12 0245018 Ceramic discal 0 022 lF r 25V for DIAL MECHANISM ASSEMBLY I 0252225 I I47 lF I R301 0110820 Metal 24k n I RNY B COB Electrolytic 6 3V R302 0129639 Carbon film 22k n 5 SRD1 8P R303 0129631 Carbon film lOk n 5 SRD1 8P R304 0129601 Carbon film 1k n 5 SRD1 8P RESISTORS R305 0129663 Carbon film 120k n 5 SRD1 8P R306 0129565 Carbon fIlm 150 n 5 SRD1 8P fo...

Page 32: ...SROt 4P R735L R 0119447 Metal oxide 3 3kU 10 ROIPA R626L R 0114201 Carbon fIlm 10kU 5 SROt 4P R627L R 0114281 Carbon film 100kU 5 SROt 4P 390U 5 RN B R628L R 0114217 Carbon film 47kU 5 SROt 4P R738L R 0110628 Metal R629L R 0114181 Carbon film 6 8kU 5 SROt 4P R739L R 0114145 Carbon film 390U 5 SROt 4P R630L R 0114217 Carbon film 47kU 5 SROt 4P R740L R 0114177 Carbon film 4 7kU 5 SRO P R631L R 01142...

Page 33: ... R410L R 0114161 Carbonmm 1k l1 5 SROY P R919 0114217 Carbon mm 47k l1 5 SROv P R411L R 0114163 Carbonmm 1 2k l1 5 SROv P R920 0114289 Carbon mm 220k l1 5 SRO P R412L R 0114149 Carbon mm 560 l1 5 SROv P R921 0114179 Carbon film 5 6k l1 5 SROv P R413L R 0114219 Carbon mm 56k l1 5 SROv P R922 0114135 Carbon film 150 l1 5 SRO P R414L R 0114301 Carbon mm 680k l1 5 SROv P R923 0114221 Carbon mm 68k l1 ...

Page 34: ... IN34A D153 23370II IS2076 I e D154 2337011 IS2076 for TONE PRINTED WIRING BOARD II D155 2337011 IS2076 D156 2337011 IS2076 Q501 I 2327903 I 2SA872A II VA301 2347042 MV 5W Q502 2327923 2SCI775A D201 2337381 IS2692 D202 2337381 IS2692 Q504 I 2327363 I 2SC1345 II D203 2337011 IS2076 Q505 2327363 2SC1345 D204 23370II IS2076 D205 0575019 IN60P II Q601L R 2327923 2SCI775A Q602L R 2327923 2SCI775A II D3...

Page 35: ...51284 300k n B for separation adj 0584L R 0575002 IN34A R323 0151284 300k n B for separation adj for DC POWER SUPPLY PRINTED WIRING BOARD for MAIN AMPLIFIER PRINTED WI RING BOARD Z0551 2337068 AWOI 20 R745L R I 0151301 I 300 11 B Z0552 2337122 HZ 6B Z0801 2327075 AWOl 30 Z0802 2327075 AWOI 30 for TONE PRINTED WIRING BOARD ZD803 2337068 AWOI 20 Z0804 2337068 AWOI 20 R651L R 0159141 162k n 32 contac...

Page 36: ...RING BOARD F701L R I F702L R F002 F901 F903 FOOl FUSES 2727548 Wired in fuse 6A 2727548 Wired in fuse 6A for AC PRINTED WIRING BOARD 2727547 I Wired in fuse 5A 2727546 Wired in fuse 4A 2727591 Thermal fuse 2A for CHASSIS ASSEMBLY 2727571 I Fuse I5A J501 2506721 2506731 2506641 2506741 2506791 2506781 2506761 2506751 2506771 4567414 2667284 2667281 4567411 2677441 2677441 4785121 IF printed wiring ...

Page 37: ...CHANISM ASSEMBLY 4567433 3 x 10 CT bind screw Black 4567453 3 x 10 CT bind screw Silver 3199933 Dial scale 4568853 3 x 10 CT screw 4400611 Blind 4568832 3 x 8 CT screw 3387261 Dial pointer 4784106 3 x 10 CT bind screw 0666704 Clip 2748781 AC power cord 3337201 Spring 2657461 Socket AC socket 3900241 Lamp cover assembly 2687794 4P push terminal 4684741 LED cover 2677371 4P US pin jack 4684742 LED c...

Page 38: ...ENCE MOYENNE o COMMANDE D AIGU o COMMANDE D EQUILIBRAGE 8 COMMUTATEUR DE SOURDINE AUDIO o COMMANDE DE VOLUME Cl J COMMUTATEUR DE COPIE DE BANDE CD COMMUTATEUR DE CONTROLE DE BANDE D COMMUTATEUR DE FONCTION til PRISE DE MICROPHONE 4J COMMANDE DE VOLUME DU MELANGE MICRO BOUTON D ACCORD 41 LAMPE INGICATRICE DE PROTECTION 4B WATTMETRES Cl INTERRUPTEUR DE HAUT PARLEURS 4D COMMUTATEUR DE FILTRE PASSE BA...

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