Yamaha Silent Piano SH Series Manual

Grand Piano
Upright Piano
Feb. 2013 Ver. 1.0
SH Series
MAINTENANCE HANDBOOK
MHB32

Page
1 UnitStructureandNames 4
2 ActionRemovalCaution 6
3 CheckregulationandAdjustmentSilentmechanism 7
4 SensorUnitAdjustment 10
5 CalibrationMode 12
6 TestMode 15
7 ProgramUpdate 20
8 UnitConnectionDiagram 21
9 PartsList 22
TableofContents
Foreword
ThishandbookcoversmaintenancefortheSilentPiano™'sGPS‐SHandUPS‐SHseries releasedinJanuary
2013.
ForthefirsttimeevertheSilentPiano™offerssoundsampledfromtheYamahaCFXfullconcertgrand
pianowithbinauralsamplingsystem,enablingreproductionofnaturalandthree‐dimensionalsound.
Theperformancecanberecordedintwodifferentways.Itcanberecordedeitherdirectlytothebuilt‐in
recorderofapiano,ortoaUSBaudiorecorder,inwhichcasethedatastoredinUSBflashmemoryin
WAVformatcanbeplayedonaPCaswell.WhiletheGrandSilentPiano™requiresleveroperationfor
switchingto"Silent"mode,SHtypeSilentPiano™doesitallviamotoractivationwithasinglepressofa
button.
TheheadphonesthatcomeexclusivelywithSHtypepianosaredesignedinawaythatminimizesthe
strainonusersafterlonghoursofplaying.Thesenewlyemployedheadphonescontributetothe
improvementofsoundqualityaswellastothereductionoffatigueduringperformance.
Operabilityofprogramforservicinghasbeenimprovedasfollows.TheCalibrationmodecanbe
executedbypushingbuttonsonacontrolpanel.Thestateandresultofcalibrationcanbeseenonthe
displayonacontrolpanelaswell.Keysensortest,Hammersensortest,Pedalsensortestare
incorporatedasitemsintheTestmodeprogram.
Sincethishandbookmainlyfocusesoninformationrequiredforserviceandsupport,pleaserefertothe
User'smanualfortheinformationaboutoperation.

1.UnitStructureandNames
■MainUnitandPedals
1SwitchBox
2ShiftPedal
3SostenutoPedal
4DamperPedal
5GMUnit
※ACAdaptor[PJP‐PS04]
4
3
2
1
5
4
3
2
1
5
1SwitchBox
2SoftPedal
3SilentPedal
/SostenutoPedal*Sostenutomodelonly
4DamperPedal
5DCIN Unit(SoundboardSide)
6SilentLever *Sostenutomodelonly
※ACAdaptor[PA‐150A]
※ACAdaptor[PJP‐PS04] *Umodelonly
GrandPiano
UprightPiano
6
‐4‐

■Switch Box
[FrontView]
[BottomView]
■GMUnit
1POWERButton
2QUIETButton(GrandPiano)
PIANOButton(UprightPiano)
3RECButton
4STOPButton
5PLAY/PAUSEButton
6－/NO,＋/YESButton
7FUNC.Button
8FunctionIndicator
9Display
10USBTerminal
11PHONESJacks(StereoMini)
12VOLUMEControl
13DCIN12VConnector
14MIDIIN/MIDIOUTConnectors
15AUXIN/AUXOUTJacks(StereoMini)
1OUTPUTL(L+R)/RJacks
2OUTPUTVOL.Control
10 11 12
14 15
13
123456 78 9
1
2
Upright PianoGrand Piano
GrandPiano
‐5‐

2.Actionremovalcaution
■PullinganAction
■RemovingaHammerSensor
1) Removescrews.(AX4)
2) Loosenscrews.(BX4)
3) SlideHammerSensorUnittowardyou,thenlifttheHammerSensor.
■RemovingLowerFrontboard
Whenpullinganactionfortuningandvoicing,makesuretoturnofftheswitch.
Setcablesasshowninapicture.
Removewhitesquare
connector.
Loosencabletiestoreleasesensor
cablefromHammerrail.
Headphonehanger
A
B
GrandPiano
UprightPiano
WhenanHeadphonehangerisattachedtothebottomoftheSwitchBox,toremovetheHeadphone
hangerloosenthescrewsasshowninthefigurethenslidetheHeadphonehangertowardsyou.
Whenpullinganaction,makesurethattheSilentmechanismisreleasedandremovethewhitesquare
[keysensor]connectorinfrontoftheaction.
‐6‐

3.CheckregulationandAdjustmentSilentmechanism
■Hammershankstoppercheck/adjustment
[Standard]
[Procedure]
■Hammershankstoppingpositionadjustment
[Standard]
[Procedure]
ReplaceHammershankstoppercushioningasneeded.
Shankstoppercushioning
Tickness PartNo.
5.5mm T6210100
5.0mm T6210110
4.5mm T6200120
4.0mm T6210130
3.5mm T6210140
3.0mm T6210150
2.5mm T6210150
Setthehammershankstoppingpositionto5mm–6mmfromthestrings
Fig.1
・TurnnutAtosothatthehammershankstopperis
paralleltothestringswhenthesilentmechanismis
inactive.
・TurnnutBtosothatthehammershankstopperis
verticaltothehammershankwhenthesilent
mechanismisactive. Fig.2
B
A
GrandPiano
Hammershankstoppingpositionto5mm–6mmfromthestrings
AdjustmentofactionintheSilentmodeisdonewiththeSilentmechanismengaged.
Switchingofsilent/normalplayisdonewiththe[POWER]or[QUIET]buttononthefrontpanelfor
GrandPiano,withtheSilentPedal(Center)forUprightPiano.
・Adjustandsetthehammershankstoppercushiontocontactthehammershankvertically.
・Whilethesilentmechanismisdisengaged,hammershanksdonotcontactthehammershank
stopperwhendepressingkeys.(Fig.1)
TurnthestrokeadjustmentscrewsAandBonthetreble
sideoftheKeybed(Fig.2)asnecessarytoadjusttheshank
stopperangle.
Cushionlengthsareall378mm.
Cutasfollows:
Bass:365mm,Middle:375mm,Treble:232mm.
‐7‐

■Regulatingrodcheck/adjustment
[Standard]
[Procedure]

 Fig.3 Fig.4
■Silentlet‐off(=Hammerlet‐offintheSilentmode)
[Standard]
[Procedure]
Adjustregulatingrodadjustmentscrew（Fig.5）
[Procedure]
1) Check/adjustmentofnormalhammerlet‐off.
2) Increasethehammerdropofthekeyateachendofeach
regulatingrodto8mm‐9mm.
(Ifthedropisnotincreased,jackescapementcannotbeseen.
ThisistoconfirmjackescapementinSilentmode.) Fig.5
3) ConfirmSilentmodelet‐offonsamplesatbothendsofeachsection.
4) Rotatetheadjustmentscrewofregulatingrodbetweentherepetitionleverstoadjust.
5) Returnthehammerdroponsamplestotheoriginalposition.
Silentlet‐off:Shanksto
pp
in
g

p
osition+1mmto2mm
a
b
Regulatingroddriveleveradjustmentscrew
Regulatingrodadjustmentscrew
・Smalljack’sknob(a)andRegulatingrod(b)respectivelycontactinthecenterposition
whenSilentmechanismisengaged.(Fig.3).
・Smalljack’sknob(a)doesnotcontacttheRegulatingrodwhenSilentmechanismis
disengaged.
AdjustRegulatingroddriveleveradjustmentscrewinstalledinthebackofthe
actiontrebleside(Fig.4)
・Torotateregulatingrodmore:Adjustscrewclockwise
・Torotateregulatingrodless:Adjustscrewcounterclockwise
Silentlet‐offescapesattheshankstoppingposition+1mmto2mm
・TonarrowSilentmodelet‐off:Rotatescrewclockwise
・ToincreaseSilentmodelet‐off:Rotatescrewcounterclockwise
‐8‐

■Hammershankstoppercheck/adjustment
[Standard]
[Procedure]
Adjustturnbuckle.
4.5mm～7mm
UprightPiano
Adjustmentscrews
・Shankstoppositionis4.5mmto7mmateachsectionwhensilent
mechanismisengaged.
・Whilesilentmechanismisdisengaged,hammershanksdonotcontact
thehammershankstopperwhendepressingkeys.
・RotateturnbucklecounterclockwisetomakeShankstoppositionnarrower.
・RotateturnbuckleclockwisetomakeShankstoppositionwider.
IncasetheShankstoppositiondiffersbetweensections,loosenadjustmentscrewsandadjustthe
positionoftherailsofeachsectionontheshankstopperassembly.
‐9‐

4.SensorUnitAdjustment
Adjustmentisrequiredwhentheunitisdetachedorreplaced.
■Keysensorunitadjustment
[Standard]
[Procedure]
■Hammersensorunitadjustment
[Standard]
[Procedure]
1) Turnonthepowerswitchwhilepressingthe[REC]and[PLAY]togetintoTestMode.
2) Select"t04"toactivateHammerSensorTest.
Pleasereferto6.TestMode(Page15).
3) RotatetheadjustmentdialtoadjusttheM2position.
[AdjustmentProcedure]
1) LoosenLonglockscrew(A)
2) LoosenLockscrew(B)
3)
4) TightenLockscrew(B)
5) TightenLonglockscrew(A)
■Pedalsensorunitadjustment
[Damperpedaldetectionpositionadjustment]
[Shiftpedalsensor/Sosutenutopealsensordetectionpositionadjustment]
Adjustmentisrequiredwhentheunitisdetachedforactionregulation.
Fig.6
a
Adjustmentscrews
Fig.7
GrandPiano
Adjustmentdial
(A)
（C）
（B）
Lockplate
Adjustthegapbetweenthebottomsurfaceofablackkey
locatednearthesensorbracketandtheuppersurfaceofthe
keysensorunitto3.0mmto5.0mmwhendepressingthe
blackkeytothelowestpoint,andthegapbetweenthe
keyboardandKeysensorrailsothatitisparallel,alsowhen
depressingtheblackkeytothelowestpoint.(Fig.6)
Adjustfromthebottomofthekeyboardwith2adjustment
screwstomakeagapofappropriatesize.
Adjustmentspots:Sensorbrackets:4
Adjustmentscrews:2each(Fig.7)
M2Buzzersoundpositionis0.5mmto2.5mmbeforeshankstoppingposition.(Fig.8)
DamperpedaldetectionpositionadjustmentshallbedonewithregisteringHalfpointpositioninthe
DamperPedalCalibrationmode.Pleasereferto5.CalibrationMode(Page12).
Shift/Sosutenutopedalsensordetectionpositionadjustmentshallbedonewiththetestmode
buzzersoundingpositions.Pleasereferto6.TestMode(Page15).
Hammershankstoppingpositionto5mm–6mmfromthestrings
M2:Shankstoppingposition0.5mmto2.5mm
Fig.8
Longlockscrew（A）
Hammersensorheightadjuster（C）
Lockscrew（B）
RotateHammersensorheightadjuster(C)toadjusttheM2position.
‐10‐