Yamaha disklavier MX-100B User manual

MX-100B
CONTENTS
DisklavierDesign2
Specifications2
Panel Layout3
HowtoFormatDisks4
MIDIBlockDiagram5
MIDIDataFormat6
MIDIImplementationChart10
TestProgram11
AdjustingtheVariousUnits13
UnitWiring18
BlockDiagram20
CircuitBoards21
PartsList
OverallCircuitDiagram
PP
008556
YAMAHACORP.
HAMAMATSU,JAPAN
13K-625
PrintedinJapan'90.8

MX-100B
IMPORTANTNOTICE
ThismanualhasbeenprovidedfortheuseofauthorizedYamahaRetailersandtheirservicepersonnel.
Ithasbeenassumedthatbasicserviceproceduresinherenttotheindustry,andmorespecificallyYamaha
Products,arealreadyknownandunderstoodbytheusers,andhavethereforenotbeenrestated.
WARNING: Failure to follow appropriate service and safety procedures when servicing this product
mayresultinpersonalinjury,destructionofexpensivecomponentsandfailureofthe
producttoperformasspecified.Forthesereasons,weadviseallYamahaproductowners
thatallservicerequiredshouldbeperformedbyanauthorizedYamahaRetailerorthe
appointedservicerepresentative.
IMPORTANT: The presentation or sale of this manual toany individual or firm does not constitute
authorization,certification,recognitionofanyapplicabletechnicalcapabilities,or
establisha principle-agentrelationshipofanyform.
Thedataprovidedisbelievedtobeaccurateandapplicabletotheunit(s)indicatedonthecover.The
research,engineering,andservicedepartmentsofYamahaarecontinuallystrivingtoimproveYamaha
products.Modificationsare,therefore,inevitableandchangesinspecificationaresubjecttochangewithout
noticeorobligationtoretrofit.Shouldanydiscrepancyappeartoexist,pleasecontactthedistributor's
ServiceDivision.
WARNING:Staticdischargescandestroyexpensivecomponents.Dischargeanystaticelectricityyour
body may have accumulated by grounding yourself tothe ground buss inthe unit (heavy
gaugeblackwiresconnecttothisbuss).
IMPORTANT: Turn the unit OFF during disassembly and parts replacement. Recheck all work before
youapplypowertotheunit.
1

MX-100B
TheDisklavierDesign
Specifications
Design
Controlunit• Keyswitches 18
•LCDDotmatrix(16charactersx 2 lines)
•LEDindicatorsPower,Record,Volume,Tempo,
Transposition,Metronome,MIDI.
•LEDdisplay7 segmentsx 2 digits
•Diskdrive 3.5inchmicro-floppydiskdrive
•JacksMIDIIN/OUT,footswitchphonejack
(ExcludingtheunitwithSpecificationsforWest
Germany)
•MediaDoublesided,doubledensity,doubletrack
3.5inchmicrofloppydisks
Memorycapacity:628kbytes
Numberofpieces:60
Musictitles:32characters
Disktitles:64characters
Solenoidunit• Polyphonicvoices16
Sensorunit• Polyphonicvoices16
Powersupply•PowerrequirementLocalACvoltage
•Ambienttemperature4°C(40°F)~ 40°C(104°F)
Standardequipment
•Wirelessremotecontrolunit
•Prerecordedfloppydisk
•Blankfloppydisk
*Specificationsandexteriordesignaresubjecttochangewithoutnotice.
2

MX-100B
PanelLayout
•FrontPanel
•ExternalMIDIPanel
•RemoteControlUnit
3

MX-100B
HowtoFormatDisks
Afterinsertinga disk,presstheRec.buttonwhilekeepingtheStopbuttondepressed.Youcan
releasethesebuttonswhenthedisplayreads"FORMATOK?".
Inanswertotheabovemessage,pressthePlay/Pausebutton.(Ifyoushoulddecidenotto
proceedwithformatting,removethediskinstead.)
ReconfirmtheabovequestionbyagainpressingthePlay/Pausebutton.(Ifyoudecidenotto
proceedwithformatting,removethediskinstead.)
Aftera fewminutes,formattingiscompletedandthedisplaywillchangeasfollows.
4

MX-100B
MIDIBlockDiagram
5

MX-100B
MIDIDataFormat
1.TransmissionConditions
6

MX-100B
2.TransmissionData
•CHANNELINFORMATION
1)CHANNELVOICEMESSAGES
•SYSTEMINFORMATION
1)SYSTEMREALTIMEMESSAGES
Timingclock
Status11111000(F8):Note2
Note2:Theclocktempocanbechangedwithina variablerangeof
=40~ 230.
Start
Status11111010(FA)
Continue
Status11111011(FB)
Stop
Status11111100(FC)
Activesensing
Status11111110(FE):Note3
Note3:Whenthepreferreddata,includingactivesensing,hasbeentransmitted,ifdata
isnottransmittedwithinanintervalofapproximately80milliseconds,themain
clockistransmitted.
7
KeyOn/Off
Status
NoteNo.
Velocity
10 0 1 n n n n (9n)
0kkkkkkk
0vvvvvvv
n=channelnumber(0~ 15)
k=21(A-1)~108(C7):Note1
v=0:keyoff
v=1~ 127: keyon
Note1:Transpositionisalsolimitedtothisrange.
ControlChange
Status
ControlNo.
Controlvalue
10 1 1 n n n n(Bn)
0ccccccc
0vvvvvvv
n=channelnumber(0~ 15)
ControlNo
c=7 volume(MIDIOUTVOL.)
c= 64Sustainpedal
c=67Softpedal
Controlvalue
v=0~ 127
v=0: off, 31:on
v=0: off, 31:on
ProgramChange
Status
ProgramNo.
11 0 0 n n n n (Cn)
0ppppppp
n=channelnumber(0~ 15)
p=0~ 127

MX-100B
*ThesystemrealtimemessagesTimingClock,Start,Continue,andStopcanbetransmitted
onlywhenthemetronomefunctionisON.
*Whenplayingbacka diskrecordedonanothersystem(E-seq),allsysteminformationas
wellassystemexclusivemessagescanbetransmitted.
*InMIDIOUT= DELAYOUTconditions,andalsoinStoporRecordingmode,delaythedata
receivedthroughMIDIINby500msec,andmergeitwithMIDIOUTwithoutanychanges.
3.ReceptionConditions
8

MX-100B
4.ReceptionData
•CHANNELINFORMATION
1)CHANNELVOICEMESSAGES
KeyOff
Status
NoteNo.
Velocity
KeyOn/Off
Status
NoteNo.
Velocity
•SYSTEMINFORMATION
1)SYSTEMREALTIMEMESSAGES
ActiveSensing
Status11111110(FE):Note4
Note4:Whenthiscodeisreceived,sensingbegins.Ifthereisneitherstatusnordata
foranintervalof300msec,thepianokeyboardandpedalsbecomeOFF,asdo
theNoteONofMIDIOUTandtheSustainPedalON.
9
ControlChange
Status
ControlNo.
ControlValue
10 0 0 n n n n (8n)
0kkkkkkk
0vvvvvvv
10 0 1 n n n n (9n)
0kkkkkkk
0vvvvvvv
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)
0ccccccc
0vvvvvvv
n= channelnumber(0~15)
ControlNo.
c=64Sustainpedal
c= 67Softpedal
ControlValue
v=0: off, 31:on
v=0: off, 31:on