Yamaha disklavier MX-100A User manual

MX-100A

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Staticdischargescandestroyexpensivecomponents.Dischargeanystaticelectricityyour
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CONTENTS
TheDisklavierDesign1
Specifications1
NamesandFunctions
•FrontPanel2
•RemorteControlUnit5
•Connectors6
HowtoFormatDisks7
MIDIDataFormat8
MIDIImplementationChart11
MIDITroubleshootingandknow-how12
WarningDisplaysanderrormessages14
Errornumbermeaning15
BlockDiagram16
DisassemblyProcedure17
AdjustmentProcedure
•KeyDriveUnit21
•KeyStopRailUnit21
•PedalDriveUnit22
•PedalCushionUnit23
•SensorUnits24
OperationTestofEachUnitUsingTheTestDisk26
ErrorDisplayLEDsontheI/OBoard31
AdjustingtheTrimmer32
TestProgram33
ProgramFlow-chartandMemoryMapofDisklavier38
ExplanationofSensorSystem39
LSIDataTable41
CPUCircuitBoard57
I/OCircuitBoard59
Sensor,Hammer,Key,M1,K,M2CircuitBoard61
DriveUnit,MIDI,PowerSupplyCircuitBoard63
PartList

TheDisklavierDesign
TheDisklavierconsistsofa controlunitanda driveunitcomprisingofa sensorunit,solenoid
units,powersourceunitandI/Ocontrolunit.
Specifications
Design
Controlunit
Solenoidunit
Sensorunit
Powersupply
•Keyswitches
•LCD
•LEDindicators
•LEDdisplay
•Diskdrive
•Jacks
•Media
•Polyphonicvoices
•Polyphonicvoices
•U.S.& CanadianModels:
•GeneralModel:
•Powerconsumption
•Environmentaltemperature:
Standardequipment
18
Dotmatrix(16charactersx 2 lines)
Power,Record,Volume,Tempo,
Transposition,Metronome,MIDI.
7segmentsx 2 digits
3.5inchmicro-floppydiskdrive
MIDIIN/OUT,footswitchphonejack
Doublesided,doubledensity,doubletrack
3.5inchmicrofloppydisks
Memorycapacity:628kbytes
Numberofpieces:60
Musictitles:32characters
Disktitles:64characters
16
16
120V - 60Hz
220V- 50Hz
250W
4°C~ 40°C
Wirelessremotecontrolunit,prerecordedfloppydisk
*Specificationsandexteriordesignaresubjecttochangewithoutnotice.
1

NamesandFunctions
PowerSwitch
Pressingthisswitchturnspoweron,shownby
thepowerindicatorandtheVolumebutton
indicatorlightingup.Atthesametime,theLCD
willdisplaythemessage"DISKNOTREADY!".
Remotecontrolsignalwindow
Theinfraredsignalsfromtheremotecontrolunit
arereceivedatthiswindow.Besuretoleaveit
uncoveredsothesignalsfromtheremotecontrol
unitcanbereceivedproperly.
Powerindicator
Lightsupwhenpoweristurnedon.
Diskslot
Floppydisksareinsertedhere.
DiskEjectbutton
Pressthisbuttonwhenyouwishtoremovean
inserteddisk.
*Pleasedonotremovethediskduringplayback
orrecordingasthiswilldamagethediskdrive
headandthediskitself.
Musicnumberindication
Displaysthenumberoftheselectedpieceof
music.Confirmthisdisplaybeforeyouplayback
orrecord.
LiquidCrystalDisplay(LCD)
TheLCDdisplaysa varietyofinformationsuch
asthemusictitle,adjustmentvalues,thetimethat
haselapsedsincethebeginningofthepieceof
music,playbackandrecordinglevels,andsoon.
StartPausebutton
Pressthisbuttonwhenyouwanttostart
playbackorrecording.Alsouseitwhenyouwish
totemporarilystop(pause)orrestarta pieceof
musicduringplaybackorrecording.(Ifthisbutton
ispressedduringfastforwardorrewind, playback
willrecommencefromthere.)
TuneSelectReturn-FFbuttons
Instoporrecordstand-bymode,thefunctionof
thesebuttonsistoselectthemusicnumber,while
theyfunctionasFastForwardorReturnbuttons
duringplayback.Tostopfastforwardorrewind
operation,presstherespectivebuttonagain.This
willrestartplaybackfromthepointwherethe
buttonwaspressed.Ifthebuttonisnotpressed
again,fastforwardorReturnwillstopatthe
beginningofthenextpieceofmusicorthepresent
onerespectively.
Stopbutton
Thisbuttonstopsalloperationssuchasplayback
andrecording,fastforwardorrewind.
2

Rec.button
Pressingthisbuttoncausesitsindicatortolight
up,enteringrecordstand-bymode.Recordingcan
nowbestartedbypressingtheStart/Pausebutton.
Ifyouwouldliketodeletepartofa recordedpiece
ofmusicandrerecordsomethingelseinitsplace,
firstenterrecordstand-bymodebypressingthis
button.Thendisplaythenumberoftherespective
pieceofmusicwiththeMusicSelection/Return-FF
buttonsandusetheStart/Pausebuttoninorder
tocommencererecording.
Thenumberofpiecesofmusicthatcanbe
recordedona singlefloppydiskis60fora total
recordingtimeofabout90minutes.However,
thisisonlyanapproximationandtheactual
numberofpiecesandlengthofrecordingtime
dependsonthekindofmusicrecorded.
Ifthisbuttonispressedonceagainduring
recordstand-bymode,themodewillchange
to"music/disktitleentrymode",whichisused
toinputthenamesofsinglepiecesofmusicor
entiredisks.
Ifthisbuttonispressedagaintwiceduring
recordstand-bymode,themodewillchange
to"splitpointsettingforseparateleft-and
right-handparts".
Repeatbuttons
Operatethesebuttonswhenyoudesirerepeated
playbackofcertainpiecesofmusicorsections
withinthem.
Volumebutton
Inordertoadjusttheplaybackvolume,pressthis
buttoninstopmode,duringplaybackorplayback
pause,makingsurethatthebutton'sindicator
lightsup.Youcanthenadjustthevolumewith
the+/ - buttons. Theadjustmentrangeis
from-03to+02.Itisusuallysetto00.
Inaddition,thisbuttoncanbeusedtoturnthe
metronomesoundonoroffwhentheMetronome
buttonhasbeenpressedtoselectthe
metronomefunction.
Tempobutton
Whenyouwanttoadjustthetempo(speed)of
apieceofmusicforplayback,pressthisbuttonin
stopmode,duringplaybackorplaybackpause,
makingsurethatthebutton'sindicatorlightsup.
Youcanthenadjustthetempowiththe+ / -
buttons. Theadjustmentrangeisfrom-50%
to+20%.Itisusuallysetto00.
Besides,thisbuttoncanbeusedtoenable
metronometempoadjustmentwhenthe
metronomefunctionison.
3

Trans/Beat
Whenyouwanttotranspose(change)thekey
ofa pieceofmusicforplayback,pressthisbutton
instopmode,duringplaybackorplaybackpause,
makingsurethatthebutton'sindicatorlightsup.
Youcanthentransposethemusicwiththe+ / -
buttons. Thetranspositionrangeisfromtwo
octavesdowntotwooctavesup.Itisusuallyset
to"normal".
Inaddition,thisbuttoncanbeusedtosetthe
metronometimewhenthemetronomefunctionis
on.
-/+buttons
Theseareusedforvariousadjustmentsand
settingssuchasvolume,tempoortransposition.
Pressingthe" - " buttondecreasestherespective
value,pressing" +" increasesit.Withboth
buttons,keepingthemdepressedchangesthe
valuecontinuouslywhilepressingthemshortly
changesthevalueinsinglesteps.
Metronomebutton
TheDisklavierhasa metronomefunctionwhich
allowsyoutorecordmusicwhilelisteningtoa
metronomebeat.Itisalsopossibletousethe
metronomefunctionwhennotrecording.
(However,themetronomecannotbeusedduring
playback.)
Whenyouwishtousethemetronomefunction,
pressthisbutton.
PartCancelbuttons
Itispossibletocanceleithertheleft-handor
right-handpartbypressingthecorrespondingPart
Cancelbuttonwhenplayingbackmusicrecorded
separatelyfortheleftandrighthand.Inother
words,pressingthebutton"L"causesonlythe
soundofthekeysplayedbytherighthandtobe
heard,whilepressing"R"meansthatyouwillhear
onlythepartforthelefthand.
MIDIbutton
ThisbuttonisonlyneededwhenMIDIsignalsare
beingexchangedwithotherconnectedMIDI
equipment.PressingthisbuttonentersMIDI
set-upmodeinwhichtheconditionsforMIDI
communicationareestablished.
4

RemoteControlUnit
Remotecontrolsignalwindow
Pleaseoperatetheremotecontrolwhilemaking
surethatthisinfraredsignaltransmissionwindow
isaimedatthecorrespondingreceptionwindow
onthefrontpanel.Thecontrolsignalsfromthe
remotecontrolunitaretransmittedfromhere.
Start/Pausebutton
HasthesamefunctionsastheStart/Pause
buttononthefrontpanel.
Stopbutton
HasthesamefunctionsastheStopbuttonon
thefrontpanel.
Rec.button
HasthesamefunctionsastheRec.buttonon
thefrontpanel.
TuneSelectbuttons
Thefunctionofthesebuttonsistoselectthe
musicnumberinstopmode,duringplaybackorin
recordstand-bymode.
5

Return-FFbuttons
Thesebuttonsareforfastforwardandrewind.
Theycanbeoperatedinstopmodeorduring
playback.Fastforwardorrewindcontinuesuntil
therespectivebuttonispressedagain.
Volumebuttons
Thesebuttonsadjustplaybackvolumelevel.
Theycanbeoperatedinstopmode,during
playbackorplaybackpause.
Tempobuttons
Whenyouwanttoadjustthetempoofa piece
ofmusicforplayback,usethesebuttonsinstop
mode,duringplaybackorplaybackpause.
Transposebuttons
Whenyouwanttotranspose(changethekeyof)
apieceofmusicforplayback,pressthesebuttons
instopmode,duringplaybackorplaybackpause.
Repeatbuttons
Operatethesebuttonswhenyoudesirerepeated
playback.
PartCancelbuttons
Theseallowyoutocanceleithertheleft-hand
orright-handpartforplayback ofmusicwith
separatepartsfortheleftandrighthand.
Operationsthatcannotbecarriedoutwiththe
remotecontrol unit:
•Operationswiththemetronomefunctionon
•OperationsinMIDIset-upmode
•Diskformatting,registration
Connectors
MIDIjacks
ThesejacksareusedforMIDIconnections.
WhenyouwanttocontrolotherMIDIequipment
fromtheDisklavierorcontrolthisunitviaother
MIDIequipment,thesejacksenableMIDIsignal
communication.
Footswitchjack
IfanoptionalFC-5footswitchhasbeen
connectedtothisjack,youcanstart,stopand
restartplaybackorrecordingwithyourfoot.(The
footswitchthenhasthesamefunctionsasthe
Start/Pausebuttononthefrontpanel.)
6

HowtoFormatDisks
Afterinsertinga disk,presstheRec.buttonwhilekeepingtheStopbuttondepressed.Youcan
releasethesebuttonswhenthedisplayreads"FORMATOK?".
Inanswertotheabovemessage,presstheStart/Pausebutton.(Ifyoushoulddecidenotto
proceedwithformatting,removethediskinstead.)
ReconfirmtheabovequestionbyagainpressingtheStart/Pausebutton.(Ifyoudecidenotto
proceedwithformatting,removethediskinstead.)
Aftera fewminutes,formattingiscompletedandthedisplaywillchangeasfollows.
Erasingrecordings
Shouldyouwishtodeleteallrecordingsona diskatonce,youcanformatthatdiskasdescribed.
7

MIDIDataFormat
TransmissionConditions
TransmissionData
•CHANNELINFORMATION
KeyOn/Off
Status
NoteNo.
Velocity
10 0 1 n n n n (9n)
0k k k k k k k
0v v v v v v v
n= channelnumber(0~15)
k= 21(A-1)~108(C7):Note1
v=0:keyoff
v=1 ~127: keyon
Note1:Transpositionisalsolimitedtothisrange.
ControlChange
Status
ControlNo.
Controlvalue
ControlNo.
10 1 1 n n n n (Bn)n =channelnumber(0~15)
0c c c c c c c
0v v v v v v v
c=7 volume(MIDIOUTVOL.)
c= 64Sustainpedal
c= 67Softpedal
ProgramChange
Status
ProgramNo.
Controlvalue
v=0 ~127
v=0: off, 31:on
v=0: off, 31:on
11 0 0 n n n n (Cn)n=channelnumber(0~ 15)
0p p p p p p p
p=0~ 127
8
1)CHANNELVOICEMESSAGES

•SYSTEMINFORMATION
1)SYSTEMREALTIMEMESSAGES
Note3:Whenthepreferreddata,includingactivesensing,hasbeentransmitted,ifdata
isnottransmittedwithinanintervalofapproximately80milliseconds,themain
clockistransmitted.
*ThesystemrealtimemessagesTimingClock,Start,Continue,andStopcanbetransmitted
onlywhenthemetronomefunctionis ON.
*Whenplayingbacka diskrecordedon anothersystem(E-seq),allsysteminformationas
wellassystemexclusivemessagescanbetransmitted.
*InMIDIOUT= DELAYOUTconditions,andalsoinStoporRecordingmode,delaythedata
receivedthroughMIDIINby500msec,andmergeitwithMIDIOUTwithoutanychanges.
9

ReceptionConditions
ReceptionData
•CHANNELINFORMATION
1)CHANNELVOICEMESSAGES
KeyOff
Status
NoteNo.
Velocity
KeyOn/Off
Status
NoteNo.
Velocity
10 0 0 n n n n (8n)
0k k k k k k k
0v v v v v v v
10 0 1 n n n n (9n)
0k k k k k k k
0v v v v v v v
ControlChange
Status
ControlNo.
ControlValue
ControlNo.
n= channelnumber(0~15)
k=21(A-1)~108(C7)
v= ignored
n= channelnumber
k= 21(A-1)~108(C7)
v=0:keyoff
v= 1~127:keyon
10 1 1 n n n n (Bn)n= channelnumber(0~15)
0c c c c c c c
0v v v v v v v
c= 64Sustainpedal
c=67Softpedal
ControlValue
v=0: off, 31:on
v=0: off, 31:on
•SYSTEMINFORMATION
1)SYSTEMREALTIMEMESSAGES
ActiveSensing
Status 1 1 1 1 1 1 1 0 (FE):Note4
Note4:Whenthiscodeisreceived,sensingbegins.Ifthereisneitherstatusnordata
foranintervalof300msec,thepianokeyboardandpedalsbecomeOFF,asdo
theNoteONofMIDIOUTandtheSustainPedalON.
10

MIDIImplementationChart
(DISKLAVIER)
Model MX100A MIDI Implementation Chart
Date: 2/4,1986
Version: 1.0
11

MIDITroubleshootingandKnow-how
WhenMIDIIsconnected,therearea fewmistakesandproblemsthatoccurfrequently.
AsoundsourceinstrumenthasbeenconnectedtotheMIDIOUTterminal,butnosound
isproducedbytheexternalinstrument.
•AreyousuretheMIDIcableisfirmlyconnectedbetweentheMIDIOUTterminalofthe
DisklavierandtheMIDIINoftheexternalinstrument?
•Doesthereceptionchanneloftheexternalinstrumentmatchthetransmissionchannelof
theDisklavier?
•Ifyouareperforming,istheMIDIOUTswitchedtoKEYBOARDOUT?
•Duringplayback,istheMIDIOUTswitchedtoDELAYOUT?(Inthiscase,thetransmission
channeloftheDisklaviercannotbechanged.)Or,ifitisKEYBOARDOUT,isthevolume
settingoftheMIDIOUTVOL.orthepianovolumetoolow?
AkeyboardorsequencerisconnectedtotheMIDIINterminal,andperformancetook
placeontheexternalinstrument,butthepianokeyswerenotstruck.
•IstheMIDIcablefirmlyconnectedbetweentheMIDIOUTterminaloftheexternalinstrument
andtheMIDIINoftheDisklavier?
•Isthepoweron,andhasa floppydiskbeeninserted?
•DoesthereceptionchanneloftheDisklaviermatchthetransmissionchanneloftheexternal
instrument?
•Isthevolumesettingofthepiano(MIDIINVOL.)toolow?
AkeyboardorsequencerisconnectedtotheMIDIINterminaloftheDisklavier,and
performancetookplaceontheexternalinstrument,butthepianokeyswerestruck
withdelay.
•Ittakesabout0.5secondsfromthetimetheinformationisreceiveduntilthetimethepiano
keysarestruck.
Thereisa differenceinpitchbetweenthepianoandtheexternalinstrument.
•Isthetranspositionfunctionon?
•IstheTRANS/BEATsettosomethingotherthan"normal"?
Thevoicingoftheexternalinstrumentcannotbechanged.
•DoesthetransmissionchanneloftheDisklaviermatchthereceptionsignaloftheexternal
instrument?(Iftheydonotmatch,thevoicingcannotbechanged.)
TheMIDIOUTVOL.functiondoesnotoperatefortheexternalinstrument.
•DoesthetransmissionchanneloftheDisklaviermatchthereceptionchanneloftheexternal
instrument?(Iftheydonotmatch,switchingisnotpossible.)
Duringperformanceorplaybackonthepiano,thereisnoproblemwiththepiano,but
theupperorlowertonesarenotproducedonanotherkeyboard.
•Areyouplayingmusicseparatedforleftandrighthand?
•Isthesplitfunctionon?
12

Split,transpositionfunctionsdonotworkontheexternalinstrument.
•IstheMIDIOUTsettoDELAYOUT?(IfitisnotsettoKEYBOARDOUT,thesefunctionswill
notoperate.)
•DoesthetransmissionchanneloftheDisklaviermatchthereceptionchanneloftheexternal
instrument?
Whenplayingensemblemusic,theexternalinstrumentreceivesallparts.
•IsthereceptionchanneloftheexternalinstrumentsettoOMNION?
TheMIDIOUTCH.wasspecified,butinformationisnotoutputthroughthespecified
channel.
•IstheMIDIOUTsettoDELAYOUT?(Iftheperformanceinformationtransmissionchannel
wassettoKEYBOARDOUTonly,youcan changetotheoriginalchannelandtransmit.)
VoicingdatawasdumpedfromthekeyboardorotherinstrumentconnectedtotheMIDI
INterminaloftheDisklaviertothekeyboardorinstrumentconnectedtotheMIDIOUT
terminaloftheDisklavier,butontheDisklavier,"MIDIDATAERROR"isdisplayedand
thecommandisnotimplemented.
•Ifa largevolumeofdataistransmitted,dumpwithoutsendingthedataviatheDisklavier.
Yourecordedensemblemusicyourself,butwhenyouplayitback,therhythmgoes
haywire.
•Sometimesiftheamountofdataistoolarge,therhythmgoeshaywire.
Toprotectthepiano,avoidsendingoverlylargeamountsofdata.Also,avoidenteringquick
repeatednotorsuccessiveorlongscoresasmuchaspossible.
Thepianorepeatsthesamenoteoverandover.
•Istherea loopinthewiringoftheMIDIcable?
PlaybackisstartedontheDisklavier,andyouwantedtostarttherhythmmachineand
sequencersimultaneouslybyusingsystemrealtimemessages,butcannotstartthem.
•TimingClock,Start,Continue,andStopcanbetransmittedonlyinStoporRecordingmode,
whenthemetronomefunctionisON.
13

WarningDisplaysandErrorMessages
ThisDisklavierwilldisplaywarningsanderrormessagesonitsLCDwhenoperationhasbeenincorrector
otherproblemshavearisen.Shouldthishappen,pleasetaketheappropriatemeasuresafterhavingfound
outwhatthetroubleisbyreferringtothetablebelow.Pleasenotethatsomeoftheseproblemsareeasyto
mistakeformalfunctionsthoughtheyareactuallyveryeasytosolvebyyourself.
14

Whenerroroccurred,theerrornumberwillbeindicatedonthe7 segmentLEDwithpushingtheL and
Rbuttonsata time.
15
ErrorNumberandDescriptioninDetails

BlockDiagram
16

DisassemblyProcedure
1.RemovingtheCasePartsandAction
Whentuning:
1)OpenandlocktheTopBoard.
2)Loosenthescrewsandsecuring fastenersonthe
insideoftheleftSideBoard.(SeeFigure1.)
3)RemovetheUpperFrontBoard.
4)RemovetheFallBoard.
5)RemovetheMufflerAssembly.
Whenregulating:
6)RemovetheKeyStopRail.
7)Removethethreescrewsshownat(A)inFigure
2,andtheboltshownat(B).RemovetheKey
StopperAssembly.
Figure1.
Figure2.
Figure3.
Figure4.
17
8)RemovethestopperscrewfromtheLowerFront
BoardSpring.
9)Whilepressing onthespring,pulltheknob
towardsyou,andremovetheLowerFrontBoard.
(SeeFigure3.)
Removingthepianoaction:
10)Disconnectthefourconnectorsfrombothsides
oftheactionbracket.
11)Takeofftheknobbolt,andremovetheaction
unit.(SeeFigure4.)