Pioneer CT-7R Service Manual Download

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Summary of Contents for CT-7R

Page 1: ...icio tratadermétodo aeaiuËe Ëilriil n espaiïor CONTENTS 1 SPECIFICATIONS 2 2 F R O N T P A N E L F A C I L I T I E S 3 3 DISASSEMBLY 5 4 PARTS LOCATION 7 5 EXPLODED VIEWSAND PARTSLIST 9 6 BLOCK DTAGRAM t6 7 p c BoARDSCONNECTTON DTAGRAM le 8 SCHEMATIC DIAGRAM 27 9 10 1 1 12 1 1 12 1 1 12 PACKING ELECTRICAL PARTSLIST MECHAN ICALADJUSTM ENTS ELECTRICAL ADJUSTMENTS nÉcleces nltÉceruroues nÉclacesÉlecr...

Page 2: ... OUTPUT x2 450mV 50kQ Pinjack Headphones 60mV 8Sl 6mm diam iack Subfunctions a Auto reverse auto repeatfunctions MS SKIP MusicSearch Skiplsystem RECMUTEswitch o Dolby NR system B tvpe C tvpe OFF with LED indicatorlamp o Stand by mechanismwith unattended recording and playback o 3 positionAuto tapeselector NoRM CrozlMETAL Full automaticstop mechanism MEMORYSTOPfunction FF REW 2 color digital levelm...

Page 3: ...tch assemblytoward you Level motor assembly removal Control switch assemblV Level meter assembly Fig 3 3 Disassembly HeadAssembly Removal 1 Removethe stopper 2 Turn the head assembly clockwise FWD direction assembly CapstanBelt Removal 1 Remove the four screws ana rcmove the capstanmotor control assembly 2 Remove the capstan belt from the capstan assembly I o _l d __ Sub caostan assemblv ldler Pul...

Page 4: ...tches Recording operations canbe performedwhen the switches with the following symbolsaredepressed PAUSE The tape travel during recording can be temporarily suspended re cording standbymode Depress this switchagainto resumerecording NOTE The tape will not stop whan this switch îs depreæd during fast forqard or rewind operations RECMUTE Recording canbestarted This enablesunrecordedblanksto be creat...

Page 5: ...ction the directionis reversed at the end of the tape the tape starts moving in the reverse direction andthen stopsat the end two sidetravel cr The tapeis repeatedlyplayedback The repeatfunction stopswhen the direction of tapetravelhasbeenreversed eighttimes f trUenstartswitch This switchis oæratedfor unattended recording or play backusingthe timer REC For automaticallyrecordingat the lime set on ...

Page 6: ...ooks of the panelstaywith the smallscrewdriver 2 Pull the indicator panel toward you and re moveit SubpanelR Removal 1 Pull off the INPUT knobs 2 Push ttre four hooks of the panel stay with smallscrewdriver 3 Pull the sub panel R toward you and remove it Switch Escutcheon Removal 1 Push the three hooks O of the escutcheon 2 Pull the escutcheontoward you and remove it Mechanism AssemblY Removal 1 R...

Page 7: ...T o B I 5 EXPLODEDVIEWSAND PARTS LIST 5 1 MECHANISMASSEMBLY A I o C D Îp I r09 Î r ...

Page 8: ...48 ù 87 t I 6 104 0 ...

Page 9: ...he safety factor of the part Therefore when replacing be sure to usc parts of identical designation c For your Parts Stoch Controt the fast mouing items are indioated with the marhs and GENEÀALLY MOVES FAS ER THAN This classification shall be adjusted by each distributor because it depends on model number temperature humidity etc K n o b D R E C R A C 1 9 3 Knob E RAC 194 o 9 o Knob ilNPUT R I nAA...

Page 10: ...nmotor control æsembly C RWX489 Panel stay RNT OI7 Mechanism assemblY RearPanel View Remotecontrol socket RKP 222 Main chassis Terminal LINE RKB O18 Mother assembly RWX497 NR assembly Ll Rwx 499 DOLBY NRassembly Rl RWX 49S Amplifierassembly RWF O95 Jack assembly RWX 498 Switch æsembly Meter drive assembly RWX sOO Bonnet RNA 563 Strain relief REC 376 ...

Page 11: ...5 2 EXTERIOR A B a o 70 70 É C s I u 1À 30 D I r0 ll r6 2 t PI ...

Page 12: ...4 T 6l A z ft È I f J 1 ...

Page 13: ...ntrol assemblyC Cord clamper Capstanmotor coil assembly Thrust receptacle Pinch return spring R Sub pinch arm R Pinch pressure spring B Eject lever Side frame B2 assembly Heat sink B Washer YE3OFUC Wæher YS2SFBT Washer ATZ ôPOEOFMC Screw VCZ30P06OFMC Screw BMZ3OP06OFMC Screw 1 0 1 102 103 104 r05 t06 vcz26P100FMc 1 0 7 Y E 2 5 F U C 108 VCZ26P140FMC 1æ ATZ3OPOSOFMC 11 O Y E 2 O F U C 111 WA21D040D...

Page 14: ...SpringL Chassis assembly Steelball 4O Stopper Guideroller Oil stopwæher RatchspringL RatchspringR Subcapstanæsembly Capstanæsembly Capstanbelt Washer 1 RNL 266 2 RBH 849 3 RNL 265 4 RBH 5O 5 RNL 261 REB447 RNL 269 R8H 51 RXB 55O RNL 267 RBH 61 16 RNL 253 17 RNL 254 18 RNL 255 19 HNL 306 20 RNL 305 RNHO77 RXX 3i t6 RXB 548 Lock arm Lever spring Eject prevent lever Spring Cylinder O ring Piston Conn...

Page 15: ... rC40668P I e 0601 503 604 07152473or lcrz 1 g r e jgj i 0 or x884o66BM I usto4o 0 l E F 6 s 5 6 v o H 0 4 0 6 6 8 ç i l r o 6 9 i r r r t à J i à 1 L 1 r à l Ï l i È u t l t o o i À ï é d r T r r _ t t i i 1 I P d ït f i l l J ilg 5 c 1 os0 i r I ç1 t t f r r is l Ï l ii t ç 1 fsi î t i i l 1 j i oi l Ê Ëj iT l ss y Rl RWX 499 o D o o ...

Page 16: ...I I 7 I I ootl SJ POWER CASSETIE HALF S2 TAPECOUNTER CONTROL REMOTE Ags y ...

Page 17: ...I P C BOARDS I lz CONNECTION H t a L q S S t û H a r I DIAGRAM 3 A CONNECTOR Ass y AMP Ass y RwF O95 QSOJ O5Or Q5O7 v Ê 5 0 r L 5 G L 4 B o c D JACK Ass y RfVX 4ge SVt ITCH Ass y 2 ...

Page 18: ... 06 vBæi vR305 v m 0 2 v R 3 0 6 I I I 1 t J I ss y RWX 497 Icrc6 Oæ8 a3O9 a01 Q325 Ic3o7 IcJoi O V R æ 3 L 3 vR304 a 315 319 Q3 4 327 c r Ltil r5c634Nc o 2sct t5 À t i a r t jll oroo 3os 2sc2479ôt 2SDt1a9 ol i e31o31s ZSCaO6O d 2sc2673 Dl MOTHER At Q3æ a331 O306 Q3O7 aoz ta92 lcg Q3o3 w r aû2 Z07 r12 3tt 0 3 3 0 3 3 1 2æ174OLX s 2l tt30 ltE t l T I ...

Page 19: ... REC 355 58 59 RDGO22 RDG_O30 60 REC 376 6 1 62 63 æ 65 66 67 68 REC 369 69 vBz30P060FMc 70 vBz30P080FMC 71 BBZ26P080FNi 72 PMZ30P060FMC 73 FBT40PO6OFMC 74 PMZ30P060FzK 75 v8z4oP12oFMC 76 VBT3OPO6OFMC 77 VPZ3oP100FMC 78 RKP 353 79 RKP 352 80 81 REC 378 42 REC 380 83 RNL 390 84 P KP 222 A No Pan No Do cription Variablecsi er tNpUT Rotary switch A Rotary srrirclr B Jack assembly Jack assembly Power ...

Page 20: ... FEC S9O3 PLAY S9O4 FÀUSE S96 FF s906 REW s 9 0 7 s T o P s90 DtRæTtr s909 rP sgro tNoEx scaN sgil BLAir SÊARCH S9t2 MUSICREPEAT FTO REV o r 6 F o REC çF PLAY LtE t rc o1 QEE oil oFF oil oFF q oFF ON OFF qr gEq o qE of oFF or oFF ON OFF ON OFF or gEE thr ua fdhad indbot tb rr hn p6nbo 1 B ...

Page 21: ...6 BLOCK DIAGRAM F o t r v G E HEAO FWD E H AO RVE MIC AMP ...

Page 22: ...OLEY NR B C TYPE SYSTEM t1ar226 21 J MP l P e tcæ312 2t ftc swrTcHES Sl FO ER 52 ÎAPE S3OI TP FILIER S3O2 oO BYNR S3O3 DOLBYNR S5O4 FID REV 5306 ilEiilORY S Ol L D S7O2 TIUER Dq BY SW A MUTING SSO rin T ...

Page 23: ...oNIROL Ass y 2 C A p A C T T O R S 1 t i v o r r q r i ôa car on w rhour vo rarr s 50V I O A u iaj Dc vo raç rvr ar no nDlr s qna A Ad usrnq nr rie ô ma k rôuôd on ine rcmrcsr 4 d car6 rhe m podà ce or rh srÊry rac o oi he odd Ïhetrfi whe ræ k q be arp ro r pôilsol deni cà d6 q àrû rh s a rhe bù rhema r àeràm ilr ù æni Æ r mâv B y oue ro mDfov menls d6rqn ...

Page 24: ...smay be usedand are listedin the partslist l I J I N D I C A T O R A y R A W 1 6 2 _ l oOLBY A t1 lRt ôo2 3 oPsld CO TROL A ry REEL MOlOR comRol b t n o I I N 4 J M 2 i I o J t a D l L O L tEo I jr l I lT CPTd CdIru 4 y 3 1 5 l REEL MOÎOR 0ilvE A y 3 1 4 LEVEL METER A y R A W l 6 l _l i 1 II ...

Page 25: ...2 6 o o A3 FUNCTION SWITCH AsCy RWS t38 Do D o o 2 ...

Page 26: ...204 Q205 Q201 0 202 A vR202 B QM Rzos49 a w_ t L f8tùtt R2o7 rooK I vRioz f l l o o K 8 tc2ôtPA2O09 d M LC2a2 I Q20r 2S4934 fiË Q2o2 2sos82 1ô i7so Rzos roK ô H254 t E l l I l l I l_e J TR 55 I 3 6 0 ô a d A l l teJ l3bo t J t Rz5r 350 DRIVEAss ...

Page 27: ... N O F F s s o T s r o p o r o i s 9 o 8 o l R E C t t o N o N _ q _ E S 9 O 9 S K I P O N O F F S 9 I O I N D E X S C A N O N O F F S g t l 8 L A i l K S E A R C H O N q l f 5 9 I 2 M U s I c R P E A Î o N Q f I Th d ilind idicatd rhê ilch æ ilDn l 2 MOTHER A3s y I 3J L C H swrlcH Ér l r R l o 97 3 l v l L 1 f t J soz q J JACK as3 y l 2 Rwx 494 lT l FKr o 5 I Tl lÈa c o og r ql t r T I t o tr a I...

Page 28: ...o 2SAlotg o 2SA937 o 2SA I l27Nc 0320 326 6 4 I tt I 5e MOTHERAe y 3 3 Rwx 497 o30r 2SASL q zSAiOl5 d 2SA937 6 2SAI27NC f C S O f M g 7 4 L S t 2 2 o H O 7 4 L S l 2 2 st 74 LSt22 d DM74LSr22 i L vi r ro4 OsOa 3Og 2sollag or BrÂsÂoJ 2SC2497 o 2SDA82 o 3t2 3 4 J13 3 9 2 SC 7æLX o 2SC2634NC o 2 S C I a l 5 zSC2o2l ol O3lO sl8 23c2060 o 2 s c 2 6 7 3 o 2 S C l 3 8 3 i l C 2SOô00 0 2S0313 P O W E Ê O ...

Page 29: ...2 o o A3 B C Do o o o FUNCTIONSWITCH Asdy RWS t38 _ tSFl S t2 L l 2 ...

Page 30: ...METERDRIVEAss y RWX 5 o0 6 l l o o 1 o o o o o o o o o o o o o l l 1 l_ _ l ...

Page 31: ... Retay LsO1 L5O2Pe ing coit 3 9mH L503 L504 Trç coil t NJM4558D AN6552 BA4s58 2SC22Q 2SCr 740LN ÉSC2021l 2 S C18 1 s 2SC2634NC 152473 us1040 R801 8828 t OTHERS Mark Pert No Jack assembly t RSR O35 RTF 85 BTF 84 aatt a CEANL1O OM 6 c EA 10 0M16 CEA4R7M50 cEA 330M16 cEA 470M10 CEA R33M50 ccDsl 10rK 50 ccDSL 220Ks0 coMA 103J50 coMA 153J50 coMA 183 50 coMA 182K50 coMA 222K50 coMA 223K 50 cosH 471K 50 ...

Page 32: ...s10 to 1K344 1K60Al oA90l OTHERS Mark P rt No Symbot D criPtaon t ff RSB O29 RSBOæ RCV 96 STO1 Rotary svvitch Al S7O2 Rotary srruitch Bl VRTOI Variablorssistor 100k Al RemoteControl AssemblY Mark P rt No Symbol D Griptaon I I RKP 222 Remote ntrol sockot FunctionSwitchAsembly RWS 1381 ijfùk P rt No RSG 063 RSGO88 RKP 35O s901 5902 5904 S909 S912 Fundaonsu ritch S9o3 SSOS S9O8 Pushwitett CN9OI Conns...

Page 33: ...WF095 RWX 499 RWX 500 RWS 138 RWX 489 HWX 491 Mother assemblv Jack assembly Amplifier assembly DOLBY NR assembly Meter Oriræassemblv Switch assembly Remote Control assembly Function Switch assembly Capstan Motor Control assemblyC Reel Motor Control assemblyB Reel Motor Drive assembly A r RPB 095 RAW 162 RKP 353 RKP 352 MoûrerAssembly RWX 4971 CAPACITORS Merk Pârt No Crar head Indilator æsemblv lAl...

Page 34: ...art t lo Symbol Dercription o302 o3p7 o312 O314 O315 0319 0324 0327 O t30 0331 o310 o318 o311 o313 0316 0308 0309 D3o1 D303 D307 D315 D321 E 323 D325 D329 D335 D322 s3vc10 s3vc10R s2vc10F WO38 wo3c sz l2 J BZ 081 RD5 6EB2 D317 D316 o318 D320 D326 zoæ1 zoæ2 zDæ3 2D304 S1 VITCHES AND GOILS RcP l55 BcP 2001 RCP I88 RCP Iil RCP 199 RDl 4PMÛOTU RM8 lGIJ B RM9 1 BJ B RSlPFlOlJ RDl 2PSF1O2J RDl 2PSF82OJ ...

Page 35: ... oa 90 tctot PA200_7 SIOI CA 3ETTÉ HIL DfrECTOF S I02 EFÀSEP8ÈNT OElECTfi I F O s ro FYoIFEV S CIOF srff taaE mEvÊrT ÉEClOi R Vl M O T H E R A r y REEL MOÎOR CONTROL As3 y RWX 49i I c 2 0 1 PA 2009 1i F it3f eoi REEL MOTOR ORIVE T O T H E R A r r t l 3 1 6 l a 5 2SCI l7 o205 2SC2q5A I o z o q l _ 5 4 so6 auTo r É sÊLEcbF SLN or 25499 ol o 2 S A t O 3 ...

Page 36: ...74LS122 DM74LS122 tR24æ AN6552 844558 NJM4558D M5218L Lot No ternalApprearance of Transistors andlCs 881 LotNo 2SC2458 Type No 2SC2673 25C2497 rlra I Type No 25D313 25D880 2SC1 173 25D8 t2 P42007 PA2009 PA3010 TD62504P TD62507P tR2EO2 Typq No Type No 1015 r815 2240 Type No I 8 7 Type No ...

Page 37: ...ds ndEar6 rhe m ænace ol lhe etety l ror ot rhe oâd Thêrelore when r kinq h e ro ue Èd3 ot ideni catdsignarion T O T H E R Â t t a t B l 1 A t swt Tc HEs SIO1 CASSETTE tsÂlF OETECIOR NO BALF HALF sro2 ERAf pRMNI DETECTOFI FW6 Æ NO POLE slo3 M REV SELECrcR Fwo _ REv sr EFÂ5É pcLvENr oF c op roF Èo E o Ho Ê 5p5 TO aPt SELEC æ æM_re 516 ÂUTo APE SELFC oR cIAN I G c oN _ M TAL orF The uhdenind rdicalf...

Page 38: ...9 PAEKING a PartsList Mark No PartNo 1 2 3 4 5 6 RHG 437 RHA 239 RHXO3t RR8 152 RDE OlO RCH 1 19 Dercdption Packing case Pad Shoot C Operating instructions Connection cord Styrene paper ...

Page 39: ... 341A lo rt ptuyuu t adjustment STD 608A NORMAL blank tape STD 603 CrO blank tape STD 604 METAL blank tape Audio oscillator AC millivoltmeter AC mV Attenuator Oscilloscope Resistor5OkSl 1 4W L E V E L d B I 6 12 1 DOLBY NR ADJUSTMENT Step 1 Setting Mode Record pause InputSignal 7OOHa 10dBv from INPUT 316mV AC mV meter 1 TP601 of the DOI BY NR assembly L Rch AC mV meter 2 TPG 2of the DOI BY NR asse...

Page 40: ...J SEMICONDUCTORS Mor PartNo RCP n9 RDl 4PMtrtrtrJ RD1I2PS2R2J SEMICONDUCTORS Mlrk PartNo VR101 Semi fixed22k SPEED R101 Rî04 R107 R110 R105 tc101 rc102 Dl01 Dl02 D103 H101 H012 Hall device ffi 2SC24S8 ff 2sct173 OTHERS Mark PartNo tc201 1c202 o201 4202 o205 4204 Svmbol Dæcriotion ffi PAæO9 PAæ10 2SA934 2SA881 I 25D882 2SC24971 2SDI 18Érl Symbol Do criptaon PA2û7 ff PA2012 wo3B wo3c 1s 2473 Rcx 010...

Page 41: ...tension on a within 3 5 t REVERSE tension on 2 3 4 4 5 11 6TAPESPEED ADJUSTMEiIT 1 Connect the frequency c PUT terminal L or R Load the STD 301 test beginningof REW 3 Set the DIRECTION switc andthen the modeto PLAY lr 4 Adjust VR101 so that a counter is 3005 t I0 Hz at tape rewinding 5 Set the DIRECTION swi REVERSE ter is within and a reading of frequency 3000t20H2 at the beginn mg tape rewind Ree...

Page 42: ... Set the DIRECTION switch to REVERSE 4 Adjust the azimuth screw using a screwdriver as shown in Fig 1L 2 3 so that the distance B between housing and rotating base is 1 5mm Rotating base Fig 11 3 AzimuthPreadjustment 11 3TAPE TRANSPORT ADJUSTMENT 1 Load a mirror equipped cassettehalf 2 Set the DIRECTION switch to FORWARD and then the mode to PLAY 3 Adjust the adjust nut Q so that no curling takes ...

Page 43: ...REV position AC mV meter reads180mV rever rdB ù 5dE Procedure 1 Adjust the INPUT level so tàat the AC mV meter reads 27dBv v 2 Set the CT R to the FWD and record and playback the input 333H2 and Adjust the so that the 6 3kHz onto the VR301 Lch and VR303 difference betweentwo is 1 3 Likewise set the CT R to and record and playback sdB 333H2 and 6 3kHz onto Then adjust the VR302 Rch so that the diff...

Page 44: ...Y NR OFF IJsingSTD 604 with DOLBY NB ON B type tlsing STD 604 with DOLBy Nn ON C type 63Hz 125H2 333H2 lkHz Fig 12 5 Frequencyresponse 12 8 RECORDINGLEVEL ADJUSTMENT Mode Record Record Playback Input Srgnal 333H2 10dBv from INPUT 316mV Testtape STD 608A NORM AC mV meter STD 603 CrOz sTD 604 METAL TP601of the DOLBY NR assemblyL TP601of the DOLBY NR assembly R I I 333H l6av t3r6mvl 6ixz t25xz 333n2 ...

Page 45: ...performed wD 333H2OdB DOLBY L DOLBY R Â Y f æHz 4GBv I 1omv 4 5 takes place on REC PB h headguide asshown in Fig 1 Setthe DIRECTION switch Adjust the adjust nut occurs on REC PB head head guide VERSE 6 Play a tape in both FORWA d REVERSE directions and check that no found g on tape rs Capstan Screwdriver 1 2 3 9r 5 0 k 1 r 3 t v M à v Record Pause 7OOHz 40dBv 1OmV TP603 of the DOLBY NR assembly Pr...

Page 46: ...nd VR5O2 Rch of the AMP assembly so that the AC mV meter reads 7 2dBv 8Z1mV Procedure Play the 3B3Hz and 6 BkHz portions of the test tape Check that the difference between the two output levelsdoesnot exceed 0 bdBr2dB ys5g3 TP6O3 AMP assembly VR5O2 Rchl P B levet adj DolbyNRassembly Lchl rP6ogi Dolby NR assembty Rchl VRSOI Lchl P B tevet ddi Fig 12 4 Adjustmentpoints ...

Page 47: ... 603 I switch to the ON positioni switch to the ON position back the input signal adjust the C mV meter ON position position and nal onto the Lch and meter reads DOLBY NR record and and play sTD 604 rn OUTPUT playback the input signal e STD 603 Confirm that the AC mV 1 5d8 653mV 462mV r 5 2dBvt 4 Set the test tape STD 604 DOLBY NR Confirm that the AC mV r 5 2dBvt 1 5dB 653mV 462mV Dolbv assembly D...

Page 48: ...T ADJUSTMENT Step 1 Setting Procedure 1 Confirm that the AC mV meter reads 10dBv 0 6V P Psquarewave 2 If l 10dBv is exceeded bridge the sectionshown in Fig 12 7 by soldering Soldering point TP601 of the NR assemblyL TP601 of the NR assemblyR 333H2 lfrBv 316mvl I Mode Input Slgnal DC mV meter Stop 2kHz 17dBv 0 4V P P Sin wave to TP302 of the Mother assembly TP303 of the Mother assembly Procedure 1 ...

Page 49: ...ur OFF sauf indication contraire Equipements outils d esai requis 1 Banded essai STD 331A STD 341A STD 6O8A STD 603 Bande CrO2 vierge STD 604 Bande METAL vierge OscillateurBF Millivoltmètre altematif mV CA Atténuateur Oscilloscope Résistance 50 kSt ll4W Niveau dBl 0 20 12 1 RÉCUCe DU CIRCU T Etape 1 Montaç Mode Signald entrée de INP I Millivoltmètre alternatif 1 Millivoltmètre lalternatif 2 DqLBYN...

Page 50: ...re Montage Mode Lecture FWDetREV Banded essai STD 841A partiede 10kHz Procédure Lire la bande en sens avant et en sens arrière Régler la vis d azimut de tête sur la position donnant le niveau de sortie maximum 12 3 NÉCUEE DE L ENTRAINEMENT DE LA BANDE Chargerune demi cassettemunie d un miroir Placer le commutateur de DIRECTION sur la position FOR IIARD avant et le mode sur Placer le commutateur de...

Page 51: ... FORWARDet la position de fonctionnement surSTOP Tête de reproduction R E V Fig 1 3 Préréglage de I az 11 3 REGLAGE D ENTRAINE BANDE 1 2 Chargerune cassetteà miroir Régler le commutateur DI WARD et la position de f PLAY 3 Régler l écron de réglage Q ne s enroule pas sur le gui reproduction enregistrement a la tête d effacement comme Fig 77 4 4 Régler Ie commutateur REVERSE 5 Régler l écrou de régl...

Page 52: ...R ryARD et le mode de fonctionnement sur PLAY 4 Régler le VR101 de manière à ce que le fré quencemètreindique 3005ttOgz au début du rebobinage de la bande 5 Régler le commutateur DIRECTION sur REVERSE Le fréquencemètre doit indiquer 3000 t 2OHz au début du rebobinage de la bande Moteurdtntrainement du cabestanMoteur d entrainement du mécanisme de bobinæe Fig 11 7 Réglage de la vitesse de la bande ...

Page 53: ...3kHz ouT Procédure Régler VR501 canal de gauche et VR502 canal de droite de I ensembleAMP de mianièreà ce que le millivoltmètre altematif indique 1 2dBv 871mV Procédure Lire les parties 333H2 et 6 de la bande d essai Vérifier que la dif fé ntre les deux niveaux de sortie ne dépassepas B rzdB TP6trI ys5s3 TP6O3 o EnsembleAMP EnsembleDolby de droite R f VR501 canatde Réglage du va l tùd ô Ftu L VR5O...

Page 54: ...rÉG Niwau 6 3kHz niwau g3Hz tdB rdB VR30l lcoôl gâuds lLll VRAn3 Cs l dro t Rl vR cmd dê lL l vRS 4 lhd drdt lBl sÉniolouTPuT tj J Proédure 1 Régler le niveau d entrée INPUT de manière à ce que le millivoltmètre alternatif indique 27dBv 44 6mV 2 Placer le CT 7R en position de défilement avant F D puis enregistrer et lire les signaux d entrée 333H2 et 6 3kHz sur STD OOBA Régler VR301 canal de gauch...

Page 55: ... 3 Ponerel selectorde DIRECTION en la posiciôn de inversiôn REVERSE 4 Ajustar el tornillo del acimut empleando un destornillador de cabezahorizontal como se muestra en Ia Fig L 2 3 de modo que la distancia B entre el emplazamientoy la base de rotaciôn seade 1 5 mm Basede rotaciôn Cabeza de B I 1 2 Fig 11 3 Preajuste del acimut 11 3 AJUSTEDEL TRANSPORTE DE CINTA Insertarun caseteprovisto de espejo ...

Page 56: ...livoltmètre alternatif indique 5 2dBv x2dB 12 10NÉCIACC DE LA DETECTION D AMORCE Etape1 Montaç Mode Signald entrée Procédure 1 Vérifier que le millivoltrnètre alternatif indique 10dBv ondecarrée de0 6Vcc 2 Si la valeur 10dBv est dépassée ponter par soudune la partieindiquéeàla Fig 12 7 Pointdesoudure Fig l2 7 Pointde soudure 333H l Av 3r6hv o Arrêt STOP 2kIJz 17dBv onde sinusoi dalede 0 4Vc c à TP...

Page 57: ...H2333H2ttttz Fig 12 5Réponse en 12 8 nÉCLACE DU NTVEAU MENT Montage Mode Signald entrée àrNPUT Banded essai E 333H 316m STD 6 STD 6 Millivoltmètre alternatif Tp601 Dolby L TP6Ol Dolby R 1OkHz NR ENCLENCHE Utilisation de STD 603 auec Dolby NR 3dB f 4dB 10 k H z DECLENCHE Utilisation de STD 603 auec Dolby NR ENCLENCHE type B 4 5d8 ri 1 ni Utilisation de STD 60J auec Dolby NR ENCLENCHE type C 63Hz 12...

Page 58: ...alternatif indique 5 2dBv 5a9mV 3 Installer la bande d essai STD 603 et placer le commutateur Dolby NR sur la position ON enclenché puis enregistrer et lire le signal d entrée zur STD 603 Vérifier que le milli voltmètre alternatif indique 5 2dBv t1 5dB 653mV à 462mV 4 Installer la bande d essai STD 604 et placer le commutateur Dolby NR sur la position ON enclenché puis enregistrer et lire le signa...

Page 59: ...Conjunto de control del motor del eje de Conjunto de control del mOtor del carrete Fig 11 7 Aiustede lavel 11 7 COMPROBACIÔN DEL DETORSIÔN DETRANSPORTE RAPI FAST 1 Montar un casete tipo del par de torsiôn 2 Ponerel selectorde DI en la posiciôn 11 6 AJUSTEDE LA VEL CINTA 2 3 4 1 Conectar el frecuencfm salida OUTPUT L izquie Cargarla cinta de prueba ST en el principio de REW Poner el selectorde DIRE...

Page 60: ... DOLBYNR Paso1 Ajuste Modo Sefralde entrada desdeINPUT Voltfmetro de CA1 escalade mV Voltfmetro de CA2 escalade mV Grabaciôn pausa 7O0Hz 10dBv 316 mV TP601 del conjunto DOLBY NR canalesizq y der TP602 del conjunto DOLBY NR canalesizq y der 6 7æH2 1ùSv t3l6mV 7 Procedimiento 1 Ajustar el control de nivel de entrada INPUT de modo que el voltfmetro de CA escalade mV 1 indique 2 2dBv 775 mV 2 Ajustar ...

Page 61: ...s de 6 3kHz en la STD 608A Repuesta globalen frecuencia Utilizando la STD 608A con el NR en Ia posiciôn OFF lll canal izq y el VR303 de modo que la diferencia entre am 1à sdB 3 De igual forma ajustar et CT n la posici6n REV y grabar y reproducir de entrada 333H2 y 6 3kHz en la Después ajustar el VR302 canal izq VR304 canal entre las dos der de modo que la dife salidasseade ldB tf dB Como indica en...

Page 62: ...I ri 1 l Iltilizando Ia STD 804 con el interntptor DOLBY NR en h posiciôn OFF Utilizando la STD 604 con NR en h posiciônON tipo B el interntptor DOLBY tltitizando ta STD 604 con el intenaptor DOLBY NR en la posiciôn ON tiPo C s 63Hz 125H2333H2lkHz 12kHz Fig 12 5Respuesta en frecuencia 12 8 A USTE DEL NIVEL DE GRABACIôN Aiusæ Modo Grabaciôn Grabaciôn reproducciôn 333H2 10dBv a I Seflal de entrada d...

Page 63: ...n ambas comprobar direcciones de ida y que no ocurra oscilaciôn en Capstar punto de 3 5 6 on v rta oi r S A L I O A a à F M à r l v e ruio fio REV FWD Voltfmetro de CA escala de mV STD posiciôn toL nto R b l Procedimiento 1 Ajustar el control del nivel de entrada INPUT de modo que el milivoltfmetro de CA indique 32 6dBv 23 4mV 2 Poner el intemrptor DOLBy NR en Ia posi_ ciôn ON y en la posici6nC 3 ...

Page 64: ...cia entre los dos niveles de salida no soprepase 0 5d8 t 2dB 12 5 COMPROBACIôN DEL ECUALIZADOR DE REPRODUCCIôN Ajuste Modo Cinta de pnreba Voltfmetro de CA escalade mV CAgEZA REPROOUC l b l I _ I t ffisa _ 1 r ær 16 i q lbt l rP6ort t d Reproducciôn FWDy REV STD 341A posiciônes 333H2y 6 3kHz Terminales OUTPUT AMP Conjunto del VR5O2 Canal der Aiustedel nivelde reproducciôn Conluntodel Dolby NR Cana...

Page 65: ...tro indique 5 2d 3 Poner la cinta de prueba ruptor DOLBY NR en la grabar y reproducir sefrales STD603 Confirmar que CA indique 5 2dBv t 1 462 mV 4 Poner la cinta de prueba mptor DOLBY NR en la de entrada R604 canal de modo que mv y el inter iôn ON y el entrada en la tfmetro de 653 mV a I y el inter ON y grabar la STD604 CA indique y reproducir sefralesde Confirmar que el voltf 5 2dBvt 1 5d8 653 mV...

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