Yamaha-MD4S-mdr-sm 维修电路原理图.pdf

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1、SERVICE MANUALMULTITRACK MD RECORDERPA 011433HAMAMATSU, JAPAN1.93K-288 Printed in Japan 99.01CONTENTSDISCS FOR MD4S5SPECIFICATIONS6PANEL LAYOUT 7DIMENSIONS9BLOCK DIAGRAM9CIRCUIT BOARD LAYOUT10DISASSEMBLY PROCEDURE11LSI PIN DESCRIPTION13IC BLOCK DIAGRAM15CIRCUIT BOARDS18ERROR MESSAGES 23INSPECTION SP

2、ECIFICATION24MIDI IMPLEMENTATION CHART30PARTS LISTOVERALL CIRCUIT DIAGRAM19981210-79800RadioFans.CN 收音机爱 好者资料库MD4S2WARNING: CHEMICAL CONTENT NOTICE!The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or plastic (whereapplicable) components ma

3、y also contain traces of chemicals found by the California Health and Welfare Agency (and possiblyother entities) to cause cancer and/or birth defects or other reproductive harm.DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASONWHAT SO EVER!Avoid prolonged,

4、 unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose eyesto solder/flux vapor!If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handlingfood.IMPORTANT NOTICEThis manual has been pro

5、vided for the use of authorized Yamaha Retailers and their service personnel. It has been assumed thatbasic service procedures inherent to the industry, and more specifically Yamaha Products, are already known and understood bythe users, and have therefore not been restated.WARNING:Failure to follow

6、 appropriate service and safety procedures when servicing this product may result in personalinjury, destruction of expensive components and failure of the product to perform as specified. For thesereasons, we advise all Yamaha product owners that all service required should be performed by an autho

7、rizedYamaha Retailer or the appointed service representative.IMPORTANT:This presentation or sale of this manual to any individual or firm does not constitute authorization, certification,recognition of any applicable technical capabilities, or establish a principal-agent relationship of any form.The

8、 data provided is belived to be accurate and applicable to the unit(s) indicated on the cover. The research engineering, andservice departments of Yamaha are continually striving to improve Yamaha products. Modifications are, therefore, inevitable andchanges in specification are subject to change wi

9、thout notice or obligation to retrofit. Should any discrepancy appear to exist,please contact the distributors Service Division.WARNING:Static discharges can destroy expensive components. Discharge any static electricity you body may haveaccumulated by grounding yourself to the ground buss in the un

10、it (heavy gauge black wires connect to thisbuss.)IMPORTANT:Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power to theunit.WARNINGComponents having special characteristics are marked and must be replaced with parts having specification equal to thoseori

11、ginally installed.RadioFans.CN 收音机爱 好者资料库MD4S3TO SERVICE PERSONNELLeakage Current Measurement (For 120 V ModelsOnly).When service has been completed, it is imperative toverify that all exposed conductive surfaces areproperly insulated from supply circuits. Meter impedance should be equivalent to 150

12、0 ohmshunted by 0.15F. Leakage current must not exceed 0.5 mA. Be sure to test for leakage with the AC plug in bothpolarities. POLARIZATION (U, C models)This product is equipped with a polarized alternating-current line plug (a plug having one blade wider thanthe other). This plug will fit into the

13、power outlet onlyone way. This is a safety feature.INSULATINGTABLEEQUIPMENTUNDER TESTAC LEAKAGETESTER OREQUIVALENTWALLOUTLETCAUTION:USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHERTHAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.THIS PRODUCT SHOULD NOT BE ADJUS

14、TED OR REPAIRED BY ANYONE EXCEPT PROPERLY QUALIFIED SERVICE PERSONNEL.PROTECTION OF EYES FROM LASER BEAM DURING SERVICINGThis set employs a laser. Therefore, be sure to carefully follow the instructions below when servicing.1. Laser Diode PropertiesMaterlal :GaAlAsWavelength :780 nmEmission Duration

15、 :ContinuousLaser Output :max. 44.6W*This output is the value measured at a distance of about 200 mm from the objective lens surface on theOptical Pick-up Block.2. When checking the laser diode emission, keep your eyes more than 30 cm away from the objective lens.MD4S4English1THIS LABEL SHOWN ON FIG

16、URE INFORMS THE USER THAT THE APPARATUS CONTAINS A LASER COMPONENT.2THIS LABEL WARNS THAT ANY FURTHER PROCEDURE WILL BRING THE SERVICE PERSONNEL INTO EXPROSUREWITH THE LASER BEAM.CAUTION:INVISIBLE LASER RADIATION WHEN OPEN AND INTERLOCKS DEFEATED.DO NOT STARE INTO BEAM OR VIEW DIRECTLY WITH OPTICAL

17、INSTRUMENTS.Nordic1DENNA MRKNING (SE FIGUR) UPPLYSER OM ATT DET I APPARATEN INGR EN LASERKOMPONENT AV TYP KLASS1.2VARNINGSMRKNING (SE FIGUR) FR STRLNING. INGREPP I APPARATEN BR ENDAST FRETAGAS AV FACKMANMED KNNEDOM OM LASER. APPARATEN INNEHLLER EN LASERKOMPONENT SOM AVGER STRLNINGVERSTIGANDE GRNSEN

18、FR LASERKLASS 1.1MRKAT ER ANBRAGT SOM VIST I ILLUSTRATIONEN FOR AT ADVARE BRUGEREN OM AT APPARATET INDEHOLDEREN LASERKOMPONENT.2DETTE MRKAT OM LASEREN ER ANBRAGT P APPARATET SOM EN OPLYSNING OM AT APPARATET INDEHOLDERET LASERKOMPONENT.VARNING:OSYNLIG LASERSTRLNING NR DENNA DEL R PPNAD OCH SPRRAR RUR

19、KOPPLADE. STIRRA EJ IN I STRLEN OCH BETRAKTA EJ STRLEN MED OPTISKAINSTRUMENT.VARO!:NKYMTNT AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTIINALASERSTEILYLLE. L TUIJOTA STEESEEN LK KATSO SIT OPTISEN LAITTEENLPI.ADVARSEL: USYNLIG LASERSTRLING NR DEKSEL PNES OG SIKKERHEDSLS BRYTES. STIRRIKKE INN I ST

20、RLEN ELLER SE DIREKTE MED OPTISKE INSTRUMENTER.ADVARSEL: USYNLIG LASERSTRLING VED BNING, NR SIKKERHEDSAFBRYDERE ER UDE AFFUNKTION. SE IKKE IND I STRLEN-HELLER IKKE MED OPTISKE INSTRUMENTER.CLASS 1 LASER PRODUCTCAUTION: INVISIBLE LASER RADIATION WHEN OPEN. AVOID EXPOSURE TO BEAM.VARNING: OSYNLIG LASE

21、RTRLNING NR DENNA DEL R PPNAD. STRLEN R FARLIG.VARO!: NKYMTNT AVATTAESSA OLET ALTTIINA LASERSTEIL YLLE. L KATSO STEESEEN.VARNING: OSYNLIG LASERSTRLNING NR DENNA DEL R PPNAD. BETRAKTA EJ STRLEN.VORSICHT! : UNSICHTBARE LASERSTRAHLUNG WENN ABDECKUNG GEFFNET.NICHT DEM STRAHL AUSSETZEN.MD UnitH.B.modelsH

22、.B.modelsDISC FOR MD4SMD4S5Its important that you buy the correct type of disc for use with your MD4S. For 4-track recording and playback, you must use MD DATA discs.Regular MiniDiscs can only be used for 2-track recording and playback (2 TR mode). MD DATA discs are used as a storage media for compu

23、ters. The MD4S uses the MD DATA audio format to store data on them. Regular MiniDiscsare also referred to as MD discs, although they are used only for music.New MD DATA discs do not require formatting before use with the MD4S. Discs that have been used to store computer data, however, must first bef

24、ormatted.Regular MiniDisc decks cannot play MD DATA discs.Regular MiniDiscs recorded on the MD4S can be played on a regular MiniDisc deck.MiniDisc recordings made on a regular MiniDisc deck can be edited on the MD4S. MiniDiscs containing songs that were digitally copied from acommercial CD, however,

25、 cannot be edited due to the SCMS (Serial Copy Management System) protection system.Songs that were recorded in 8-track mode on a recorder such as the MD8 cannot be played back on the MD4S.MD DATAMiniDiscTypeLogoMD DATA discs are for computer data storage applications.You can purchase them at comput

26、er stores. This is the typeof disc you should buy for 4-track recording and playbackwith your MD4S. Note that there are two types available:playback only and rewritable. Buy the rewritable type.MiniDiscs are used only for music. Two types are available:playback only and recordable. The MD4S can reco

27、rd up totwo tracks on the recordable type and play the playbackonly type.DescriptionSPECIFICATIONSMD4S6RecorderMixerGeneralDigital/AudioRec/PlayLocateCue & reviewDisc EditingSong EditingTrack EditingTitle EditingPanel ControlsMIDIDisplaySampling Frequency: 44.1 kHzCompression: ATRACFrequency Respons

28、e: 20 Hz20 kHz, +1 dB, 3 dBTHD+N: Less than 0.02 % (1 kHz)S/N: 96 dB typ.4-track independent simultaneous record/play (Recording time: 37 min)Dubbing with 4-track playbackAuto & Manual Punch In/Out (11.6 ms accuracy)Four-track (37 min), Stereo (74 min), or Mono (148 min) record/playRepeat play A-B,

29、Single song, All songVari-pitch (+/-10 %)Start and End point of SongDirect Time Locate10 Marker locate points for each songLast Recording In/Out point0.5x, 2x, 4x, 8x, 16x, 32x play speedDisc EraseCopy, Move, Divide, Combine, Renumber, EraseTrack Copy, Part Copy, Track Erase, Part EraseDisc title, S

30、ong titleREC SELECT buttons 14, BUS buttonTransport buttons: PLAY, STOP, PAUSE, REC, REHE, SONG SEARCH, EJECTMode buttons: AUTO PUNCH I/O, EDIT, UTILITY, ADJUST, PITCH, PEAK HOLD, DISPLAY, EXITCURSOR shuttle/DATA dialLocate buttons: MARK, MARK SEARCH, LAST REC (IN/OUT), SEARCH, SET, REPEAT, ABMIDI I

31、N, OUT, THRU jacksFLD (Fluorescent Display)InputsOutputsFrequency responseEQMASTER Channel FeaturesMIC/LINE IN (CH1, 2)Balanced phone jack x2 (10 to 50 dB)MIC/LINE IN (CH1, 2)Balanced XLR x2 (10 to 50 dB)MIC/LINE INPUT (CH34)Unbalanced phone jack x2 (10 to 50 dB)LINE INPUT (CH58)Unbalanced phone jac

32、k x4 (10 dB)INSERT IN/OUT (CH 1, 2)TRS phone jack x2 (10 dB)2 TR IN (L, R)Phono x2 (10 dB)TRACK DIRECT OUT (14)Phono x4(10 dB)STEREO OUT (L, R)Phono x2 (10 dB)MONITOR OUT (L, R)Phono x2 (10 dB)AUX SEND (1, 2)Phone jack x2 (10 dB)PHONES OUTStereo phone jack (840 ohm)20 Hz20 kHz +1, 3 dB3-band, +/-15

33、dB (LOW: 100 Hz shelving, MID: Peaking (2.5 kHz), HIGH: 10 kHz Shelving)Stereo Fader (45 mm), Monitor Level control, Monitor Select buttons (2 TR IN, STEREO, CUE), CUE MIX TOSTEREO buttonsPower RequirementsPower ConsumptionDimensions (W x H x D)WeightOperating ConditionsSupplied AccessoriesOptional

34、AccessoriesOutput LevelUSA & Canada: 120 V/60 Hz, Others: 230 V/50 Hz24 W413 x 109.5 x 388 mm5.2 kgTemperature: 5 C35 C (41 F95 F), Humidity: 10 %95 %AC power cord, Owners ManualFC5 FootswitchRefer to the INSPECTION SPECIFICATION Section of this manual.0 dB is referenced to 0.775 V r.m.s.TOC WRITERE

35、HERECPLAYSTOPPAUSEINOUTSONG SEARCHLAST REC SEARCHMARK SEARCHREPEATAUTOPUNCH I/OABDATACURSORPHONESPUNCH I/OPITCHEJECTADJUSTEDITUTILITYCH1BUSCH2REC SELECTCH3CH4LRLRPEAK HOLDDISPLAYMULTITRACK MD RECORDER1234EXITENTERSETMARK11GAINCUEHIGHLINEFLIPMIC/LINEMICLR01015+15MID15+15LOW15+15PANLRAUX12PB1098765432

36、10PANLEVEL22GAINCUEHIGHLINEFLIPMIC/LINEMICLR01015+15MID15+15LOW15+15PANLRAUX12PB109876543210PANLEVEL33GAINCUEHIGHLINEFLIPMIC/LINEMICLR01015+15MID15+15LOW15+15PANLRAUX12PB109876543210PANLEVEL44GAINCUEHIGHLINEFLIPMIC/LINEMICLR01015+15MID15+15LOW15+15PANLRAUX12PB109876543210PANLEVEL5 / 67 / 8010010STER

37、EOMONITOR LEVELCUESTEREO2TR INCUE MIX TO STEREOMONITOR SELECT109876543210109876543210MINMAXPANEL LAYOUTMD4S7Control PanelMD4S8POWER switchAC INAUX SEND 1, 2 jacksMONITOR OUT jacksSTEREO OUT jacks2TR IN jacksTRACK DIRECT OUT 1-4 jacksMIDI IN, OUT, THRU connectorsRear PanelRear PanelMIC/ LINE INPUT 1,

38、 2 terminalsINSERT I/O 1, 2 jacksMIC/ LINE INPUT 3, 4 jacksLINE INPUT 5-8 jacksGAIN controlFLIP switchCUE PAN/ CUE LEVEL controlsEQ (HIG, MID, LOW) controlsAUX controlPAN controlFaderLevel (5/ 6), (7/ 8) controlsCUE MIX TO STEREO switchMONITOR SELECT (2TR IN, STEREO, CUE) switchesMONITOR LEVEL contr

39、olSTEREO faderDisk transport (REHE, REC, PLAY, PAUSE, STOP/ TOC WRITE) buttonsAUTO PUNCH I/O buttonSONG SEARCH ( , ) buttonsA B repeat buttonLAST REC SEARCH (IN, OUT), SET buttonsREPEAT buttonMARK SEARCH ( , ), MARK buttonsDisc compartmentBUS buttonREC SELECT buttonsEJECT buttonPEAK HOLD buttonDISPL

40、AY buttonFunction (PITCH, ADJUST, EDIT, UTILITY)buttonsEXIT buttonENTER buttonDATA dial (DATA + -)CURSOR shuttlePHONES jackPUNCH I/O jackControl PanelTop panel connectorsMono InputsStereo InputsDisc transport sectionFront PanelTitle and function displayTime counter modeMIDI indicatorsTrack level met

41、ersStereo level meterPitch indicatorStatus indicatorsTOC EDIT indicatorRepeat indicatorMarker indicatorsTime counterIN, OUT indicatorsAuto punch indicatorTrack recording indicatorsCUE MIX indicatorDisplayDisplayMD4S9DIMENSIONSW: 413H: 109.5D: 388Unit : mmBLOCK DIAGRAMMEMORYCONTROLATRACAUDIOINTERFACE

42、IC 101IC 203ROMIC 104AD / DAIC 301IC 302SRAMIC 103M-ComIC 109DRAMIC 102FL DISPLAYSUB SHEETMDMECHAUNITMAIN PartTRACK 1TRACK 2TRACK 3TRACK 4RECORDERSTEREO METERMIC/LINEINSERT I/O1,22TR INLRPANCUE PANFLIPLOW HIGHMIDGAINMONITORSELECTAUX2TR INSTEROCUESTEREOFADER12AUX SENDRLRLSTEREOOUTMONITOROUTPHONES1234

43、TRACKDIRECTOUTMONITORLEVELDIRECT1,2PB1,2CUE1,2M/LPBM/LPBSTEREOCUEAUXLRLRCUE 1 4PB 1 4DIRECT 1 41234LRRLAD1AD2AD3AD4DA1DA2DA3DA4PBRECPBRECPBRECPBREC12MIC/LINE3,4PANCUE PANFLIPGAINAUXFADERDIRECT3,4PB3,4CUE3,4M/LPBM/LPB1,2LINE 6,8LINE 5,7INPUT LEVELCUE MIX TO STEREOCUE LEVELCUE LEVELIC101IC103,104IC107

44、IC109VR101VR201VR102VR202VR103VR203VR104VR204LOW HIGHMIDVR302VR402VR301VR401SW103SW104VR303VR403VR304VR404VR105VR205VR108VR109,209SW105SW106SW107SW108VR106,206VR107,207VR309,409VR306,406VR307,407VR208VR305VR405VR308VR408VR501VR5021,767213,51,73,51,7IC108IC105,1063,5127IC1021,761,7IC113VR5036721IC114

45、67IC120751321IC1196721IC118VR5046721IC1166721IC1176721IC11267IC11167IC11221IC1156721IC11121IC1103,51,7SW101SW102KEC-92344MD4S10Mixer PartCIRCUIT BOARD LAYOUTSUB 2/3SUB 3/3SUB 1/3MIX 2/2 (INPUT)MIX 1/2MAINPower transformerMD mechanical unitMD4S11520A: Bind Head Tapping Screw-B 3.0 X 8 MFZN2BL (EP6001

46、90) (Fig. 1)Bottom cover520A520ADISASSEMBLY PROCEDURE1.Bottom Cover1-1Remove the twelve (12) screws marked 520A.The bottom cover can then be removed. (Fig. 1)2.MAIN Circuit Board2-1Remove the bottom cover. (See Procedure 1.)2-2Remove the screw marked 530 and the three(3) screws marked 520B. The MAIN

47、 circuitboard can then be removed. (Fig. 2)3.MD Mechanical Unit3-1Remove the bottom cover. (See Procedure 1.)3-2Remove the four (4) screws marked 520C andthe screw marked 520D. The MD mechanicalunit can then be removed. (Fig. 2)4.SUB 1/3 Circuit Board4-1Remove the SHUTTLE knob and JOG knob. (Fig.3)4

48、-2Remove the bottom cover. (See Procedure 1.)4-3Remove the MD mechanical unit. (See Procedure 3.)4-4Remove the two (2) screws marked 520E andthe four (4) screws marked 500. The sub chassiswith the SUB 2/3 circuit board and powertransformer can then be removed. (Fig. 2, 3)4-5Remove the SUB 1/3 circui

49、t board while pressingthe twelve (12) hooks marked A. (Fig. 5)5.SUB 2/3 Circuit Board5-1Remove the bottom cover. (See Procedure 1.)5-2Remove the two (2) screws marked 520E, thesix (6) screws marked 520F and the four (4)screws marked 520G. The SUB 2/3 circuitboard can then be removed. (Fig. 2, 3)5-3R

50、emove the POWER button from the SUB 2/3circuit board.6.SUB 3/3 Circuit Board6-1Remove the bottom cover. (See Procedure 1.)6-2Remove the two (2) screws marked 520H. TheSUB 3/3 circuit board can then be removed.(Fig. 2)6-3Remove the two (2) U-shaped holders marked410A, then remove the support JACK fro