Kurzweil_sp2x 电路图 维修原理图.pdf

SP2X Service Manual 2007Allrightsreserved.KurzweilisaproductlineofYoungChangCo.;KurzweilisatrademarkofYoungChang Co.Allotherproductsandbrandnamesaretrademarksorregisteredtrademarksoftheirrespective companies.Productfeaturesandspecificationsaresubjecttochangewithoutnotice. 收音机爱好者资料库 Ra d i o Fa n s .CN ii CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE THE COVER NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL The lightning flash with the arrowhead symbol, within an equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the products enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the product. IMPORTANT SAFETY B. Objects have fallen onto, or liquid has been spilled into the product; C. The product has been exposed to rain; D. The product does not appear to be operating normally or exhibits a marked change in performance; E. The product has been dropped, or the enclosure damaged. 12. Do not attempt to service the product beyond that described in the user maintenance instructions. All other servicing should be referred to qualified service personnel. 13. WARNING: Do not place objects on the products power supply cord, or place the product in a position where anyone could trip over, walk on, or roll anything over cords of any type. Do not allow the product to rest on or be installed over cords of any type. Improper installations of this type create the possibility of a fire hazard and/or personal injury. RADIO AND TELEVISION INTERFERENCE WARNING: Changes or modifications to this instrument not expressly approved by Young Chang could void your authority to operate the instrument. IMPORTANT: When connecting this product to accessories and/or other equipment use only high quality shielded cables. NOTE: This instrument has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the instrument is used in a commercial environment. This instrument generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this instrument in a residential area is likely to cause harmful interference, in which case the user will be required to correct the interference at his or her own expense. Changes and modifications not expressly approved by the manufacturer or registrant of this instrument can void the users authority to operate this instrument under Federal Communications Commission rules. In order to maintain compliance with FCC regulations, shielded cables must be used with this instrument. Operation with unapproved equipment or unshielded cables is likely to result in harmful interference to radio and television reception. NOTICE This apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications. AVIS Le present appareil numerique nemet pas de bruits radioelectriques depassant les limites applicables aux appareils numeriques de la class A prescrites dans le Reglement sur le brouillage radioelectrique edicte par le ministere des Communications du Canada. SAVE THESE INSTRUCTIONS 收音机爱好者资料库 Ra d i o Fa n s .CN 收音机爱好者资料库 Ra d i o Fa n s .CN iii Young Chang Distributors ContactthenearestYoungChangofficelistedbelowtolocateyourlocalYoung Chang/Kurzweilrepresentative. KurzweilHeadquarters 9FL,102Dong,I PARK,JeoungjaDong, BuandanGu,SeongnamSi,GyeonggiDo,Korea 463859 Tel:182317867900 Fax:182317852703 Web:www.yapiano.co.kr YCNA(YoungChangNorthAmerica) 19060SDominguezHills,DrRanchoDominguez, CA90220,U.S.A Tel:13106372000 Fax:13106372025 Web: YCRDI(YoungChangRitwont work. bkbootblockforkeyboardmodels koperatingsystemsoftwareforkeyboardmodels. Installing the Operating System or Setups Warning:Thisprocedurerequiresperformingahardreset.Alluserprogramsandsetupswill beerased.Beforecontinuing,besuretosavealluserprogramsandsetups. 1. ConnectaMIDIcablefromtheMIDIOutportofthecomputerinterfaceorsequencerto theMIDIInportonthePC2. 2. Openthefirst.MIDfileusingthesequencerprogram. 3. TurnontheSP2XandfollowtheproceduretoentertheBootBlock. 4. PresstheEnterbuttontoselect“uOS” 5. Thesegmentshows“uOS”.StartplayingtheMIDIfilefromthesequencer.Whileafileis loading,thebottomlineofthedisplayshowstheprogress.Ifthedisplaycontinuestoshow afterstartingthesequencer,stopandrestartthesequence. 6. Afterthefileisloaded,thedisplaywillshow“oK”. 7. Ifyouhaveadditionalfilestoload,openthefilefromthesequencerandbeginplayingit. 8. PresstheCancelbuttontwicetoreturntothemainmenu.ScrolltoHardResetandselect. Trouble Shooting Installing a New Boot Block 27 Installing a New Boot Block Warning:Thisprocedureperformsahardreset.Alluserprogramsandsetupswillbeerased. Beforecontinuing,besuretosavealluserprogramsandsetups. 1. ConnectaMIDIcablefromtheMIDIOutportofthecomputerinterfaceorsequencerto theMIDIInportontheSP2X. 2. Usingthesequencerprogram,openthefirst.MIDfile. 3. TurnontheSP2XandfollowtheproceduretoentertheBootBlock. 4. PresstheEnterbuttontoselect. 6. Thesegmentshows.Startplaying theMIDIfilefromthesequencer. Whileafileisloading,thebottomlineofthedisplayshowstheprogress.Ifthedisplay continuestoshow afterstartingthesequencer,stopandrestartthe sequence. 7. Afterthefileisloaded,theunitwillreset. Replacing the Battery TheSP2XusesaflatthreevoltLithiumcoincellbattery.Whenthebatteryvoltagerunslow,the unitbootsupwithalowbatterymessage. Note: ThebatteryvoltagecanbecheckedatanytimeusingtheScannerDiagnostics.Seepage 30formoreinformation. Accessing the Battery 1. PlacetheSP2Xupsidedownonaflatprotectedsurface. 2. Removetopassemblyandsetitsafelyaside. Removing the Battery Thebattery(CR2032)intheSP2XismountedintoaholderontheEngineBoardandis accessiblewhentheaccesspanelisremoved. 1. Insertaflatplastictool(plasticknife,pencap,etc.)intooneoftheopeningsbetweenthe batteryandtheholdertoliftthebattery. Trouble Shooting Installing the Battery 28 Insert the tool here to lift the battery. CR2032 Insert the tool between The holder and the to ease the battery out of the holder. Figure 5-1 Battery and holder 2. Easethebatteryoutoftheholder.Ifnecessary,inserttheplastictoolatthebottomofthe holder(closesttotheEngineBoard)toremovethebattery. Installing the Battery 1. PositionthebatteryovertheholdersothatthepositiveterminalispointingtotheEngine Board. 2. Slidethebatteryintotheholderandapplyslightpressureuntilitsnapsintoplace. 4. Installthesevenscrewstosecurethetopassembly Trouble Shooting Power Problems 29 SP2X Scanner Test TheScannerTestsfortheSP2XincludeseparatetestsforthefrontpanelbuttonsandLEDs,front panelknobsincludingtheMasterVolumeslider,theModandPitchwheels,thekeyboard,and thepedals. ToentertheScannerTests,firstturnontheSP2X.OncetheSP2Xisonandreadytoplay, simultaneouslyholddowntheMain,LayerandSplitbuttons.AllfrontpanelLEDswillflash andthesegmentwilldisplaythefollowing: Figure 5-3 Segment example, SP2X scanner tests “SP2”,“SCn”,then“vX.Y”aredisplayedbrieflyinsequencevX.Ymeansversionofthescanner installedtheunit. “bAt”means“Battery”andthevoltageisX.Yvolts.Normalbatteryvoltageisaround3.0volts where3.2vistypicalforanewbatteryandlessthan2.8meansthebatteryisnearingtheendof itslifeandhasonlyafewmonthsleft.At2.2volts,warningwillbegin.Acompletelydeadoe missingbatterymaynotreadexactly0.0vbutwillcertainlyreadlessthan1.0v. Next“PCH”then“XXX”isdisplayedinsequence.“PCH”meansthePitch(left)WheelandXXX isitscenterreadingatpoweron.Ideallythisis128butanythingbetween120and136is acceptable.Newunitsshouldbeadjustedtobebetween126and130toallowfordriftoverthe lifeoftheunit. Lastisadisplayofwhichoptiondiodeshavebeeninstalled.First“jPr”isdisplayedbrieflythen 4verticallineswillshowbriefly.EachlinerepresentsanoptiondiodefromOpt1(leftmost)to Opt4(rightmost)Alongline(2segmentslong)mansthecorrespondingdiodeisinstalledwhilea shortline(1segment)isnotinstalled.Optionsettingsnormallytellthescannersoftwarethe keyboardlengthandweightandshouldmatchtheactualunit. Front Panel Buttons Whenabuttonispressed,itsLED(ifany)turnsonanditsmatrixaddressisshowninthe display.EachpressofKnobModewillrightthenextKnobModeLEDinatopdownsequences. RhythmandProgrambuttonhastwocolorled,eachbuttonpress,REDandGREENLEDsturns onalternatively. Front Panel Knobs Whenaknoborthevolumesliderismoved,itsnameisshownbrieflythenitschangingvalueis displayed.Thenamesare “vol”volumeslider, “KnA”KnobA, “Knb”KnobB, “KnC”KnobC, “Knd”KnobD. Thenameshouldbecorrectandthevaluenumbersshouldrunsmoothlyfrom0(or1)upto 255(254)asslidermovedupwardortheknobclockwise.Whenturnedveryslowly,thenumber displaywilltypicallychangeinstepsoftwo(1,3,5,,or2,4,6,,,,)andmayevenswitchfromevento Trouble Shooting Keyboard Problems 30 oddandbackwhichisnormal.Bigjumpsofmorethan3countswhichturningslowlymay indicateaproblem however,Whenthecontrolisreleased,itslastreadingshouldremainwithoutchangingbymore than2counts. Keyboard Whenakeyboardkeyispressed,thekeysmusicalpitchshouldbeshowninthedisplay.The firstcharactershouldbethenotename.Thesecondcharactershouldbeblankforwhitekeysora “higho(sharpsign)forblackkeys.Thethirdcharactershouldbetheoctavenumberfrom0to8. ThusMiddleCwillbeshownas“C4” Besidesthekeyname,the3decimalpointsinthedisplayrevealimportantinformationabout therubberswitchesunderthekeybeingpressed.Whenthekeyispressedpartially,theleft decimalpointwillindicatethatthefirstrubberswitchandmadecontact.Whenthekeyis pressedfurther,themiddledecimalpointindicatesthatthekeyispressedfurther,themiddle decimalpointsindicatesthatthesecondrubberswitchhasalsomadecontact.Thuswhenakeyis pressedslowly,thefollowingsequenceshouldbeobservedexactly0. BlankDisplayCorrectKeynameandleftdecimalpointCorrectlyKeynameandleftand centerdecimalpoints Ifthecorrectkeynameandonlythecenterdecimalpointlights,thenthereisadefectassociated withthefirstswitch.Ifall3decimalpointslight,theneithermorethanonekeyisprocessingat onceorthereisashortcircuitintheconnectingorontheconnector. Switch Pedals IfasingleswitchpedalispluggedintotheSWjack,operatingitshouldcasearesponseinthe display.ForKurzweilpedals,pressingthepedalshouldcause“S1C”tobedisplayedwhile releasingitshouldcause“S1o”tobedisplayed.Othervenderspedalsmaycausetheopposite response.Ifadualpedalispluggedin,thentheSustain(right)pedalshoulddisplayasdescribed above.TheSoftpedal(left)shouldcause“S2C”and“S2o”todisplay.Aswiththebuttons,the displayshouldrespondimmediatelyandwithoutflickeringifpedalworkingproperly. Continuous Pedals IfcontrolpedalispluggedintotheCCjack,operatingitshouldcausethedisplaytoshow“CP1” brieflythenitschangingvalues.Aswiththevolumesliderandknobs,thevaluedisplayshould smoothlyincreasefrom0to1upto254or255asthepedalispressed.Thisistheidealrangeofa perfectlycalibratedKurzweilpedal.Manypedalsmayonlyreach248250whichacceptable.All shouldgodownto0or1however Trouble Shooting Power Problems 31 Power Problems Dead 1. Beforeopeningtheunit,verifythefollowing: TheACoutletissupplyingpower. TheACadapterisproperlyconnectedtotheunit. 2. Checkthepowerswitch,powerjackandACadapter. 3. RefertotheInterconnectDiagram.Seepage5XX.Checkallrelatedconnections. 4. RefertotheConnectorBoardschematicsandcheckallsupplyvoltages. Audio Problems No Audio 1. RuntheScannerDiagnosticstocheckthevolumeslideroperation. 2. RefertotheInterconnectDiagram.See5XX. 3. CheckthestandardwirefromJ9ontheEngineBoardtoJ15ontheConnectorBoard. 4. Checkthesolderconnectionsattheconnectors. 5. RefertotheEngineBoardschematicsandcheckthesignalactivityontheDAC,U28. 6. Tracethesignalpath. Front Panel Problems Buttons, Knobs or Controllers not working 1. RuntheScannerTests. 2. RefertotheInterconnectDiagram.Seepage5XX. 3. Checkallrelatedcables. 4. Disconnectandreseatthecables. 5. Checkthesolderconnectionsattheconnectors. 6. Checkfrontpanelribboncable(s). 7. RefertotheConnectorBoardschematicsandcheckU12,ICScanner38869,forsignal activity. Keyboard Problems Dead Keyboard 1. ChecktheflatribboncablesconnectingthekeyboardBassandTrebleContactBoardstothe ConnectorBoard,locationsJ2andJ3.Becertainthatthecablesarenotlooseordamaged. 2. Disconnectandreseatthecables. Trouble Shooting Keyboard Problems 32 3. RefertotheConnectorBoardschematics. 4. CheckU12,ICScanner38869ontheConnectorBoardforkeyboardsignals. 5. Tracesignalpath. . Findandreplacebadcomponent(s)ororderaboardreplacement.DeadNote(s) One or More in a Section 1. Removerelatedcontactboard. 2. Checkcontactstripfordirt,damageorwearing.Cleandirtycontactswithdenatured alcohol.Replacedamagedorworncontactstrip. 3. Installcontactstrip. 4. Ifsectionisstilldead,removestripandcheckcontactboardforshorts,coldsolderjoints, etc. 5. Findandreplacebadcomponent(s)ororderreplacementboard. Mechanical Noise 1. Checkkeyboardforbrokenkeyweights,supportbrackets,orrippedcontacts. Trouble Shooting SP2 Interconnection Diagram 33 SP2X Interconnect Diagram 34 Chapter 6 Parts Lists Introduction ThepartslistsincludedinthischaptercoverallmodelsoftheSP2X.Someprintedcircuitboards andassembliesareusedinmorethanonemodel.Therefore,thepartslistsonthefollowingpages arelistedundertheseheadings: Thefollowingtwotableslisttheprintedcircuitboardsandassembliesbymodel. SP2X Printed Circuit Boards and Assemblies Part No. Description Pag e Nxxxxxxx Final Assembly, SP2X page 36 N012131702 Engine Board page 37 N012300063 Pitch & Mod Wheel Assembly page 40 N012131802 Connector Board page 41 N012131901 Front Panel Board page 44 Part List Final Assembly 35 Final Assembly Part No Item Description UnitQty Location N013030951bending strip(Iron) EA10 N015048226FELT 1TX16X1350 BLK KEYBOARD PC88/MX/PC1/2X EA1 N022003720CABLE CLAMP 20PIN EA4 N022003726CABLE CLAMP 26PIN EA2 N025224508TAPPING SCREW-2 BH 3.5X8 WHITE With washer EA32 N025223307TAPPING SCREW-2 BH 3.5X6 BLK EA2 N025223410TAPPING SCREW-2 BH 3X10 BLK EA2 N025323408MACHINE SCREW BH M4X8 BLK EA13 N025323414MACHINE SCREW BH M4X14 BLK EA13 N025323422MACHINE SCREW BH M4X25 BLK EA6 N025328822MACHINE SCREW BH 5X22 BLK With washer EA9