QRS Music Technologies PMII User manual

QRS MUSIC TECHNOLOGIES, INC.
PMII Installaon Manual
(51074)
QRSPNOmaon
Manual Revision: July, 2013
 
www.qrsmusic.com
QRSMusicTechnologies,Inc.
269QuakerDrive
Seneca,PA16346
(814)676‐6683

Table of Contents
Introducon 3
Parts List 4
GrandKit‐PNOmaonII(815002)WithoutRecord 
UprightKit‐PNOmaonII(815022)WithoutRecord 5
Preparaon 
6
MakeCertainthattheKitwillFit! 
ToolsNeeded 
Regulaon 7
PianoAconRegulaon 
Installaon Procedure 
8‐9 UprightPianoInstallaon‐Recommendaons 
UprightSlotDiagram/TwinSpeakersforUprightInstallaon#76047 
PreparingtheKeySolenoidRail 10
KeySolenoidPlungerThrow 11
KeySolenoidRailAssembly‐SolenoidtoKeyAlignment 12
ModifyingtheKeyframe‐Grand[Perform a PNOscan II Record Installaon Here]  13‐15
CungtheKeybedSlot  16‐17
InstallingtheSo‐ShiLever 18
InstallingtheSustainPedalTrapwork 19‐20
InstallingtheSustainPedalSolenoid‐Grand  21‐22
InstallingtheSustainPedalSolenoid‐Upright  22
InstallingtheUniversalSostenutoAssembly 23‐25
InstallingtheSteinwaySostenutoAssembly[Special Order Part # 70897]  26‐27
Mounng and Connecng the Electronic Components 
28‐29
ElectronicComponents‐Descripon 
  PowerSupply/DriverBoard 
  PMIIProcessor/Pin‐LightExtension(PLx)/Wi‐FiDevice/PoweredSpeaker 
ComponentLocaon‐GrandandUpright  30
Mount&Connect:PowerSupply/Processor/Wi‐Fi/Speaker/PNOscanII(Record)  31
Mount&ConnectthePLx 32
MounttheKeySolenoidRail/Mount&ConnecttheDriverBoards  33
Adjustment Procedures 34
LostMoonAdjustment:Plunger‐PlungerTiptoKeytailHeight 
VerifyOperaon 
35
  ConnecttoPowerandTurnONtoStandbyMode 
  EstablishWirelessConneconandPowerON 
KeyAdjust  36
PedalAdjust 37
PedalTest[TestFiles] 
PNOscanAdjust[PNOscanIImustbeinstalled]  38
InstallRailCover,LyreBracesandDressCables  39
InstallaonisComplete 
User Guide ‐Introducon 
PowerONtothePMIIUserInterface 
WelcometoQRSPNO 
PlayPiano  41
PlaybackSengs 
Wi‐Fi Setup 42
ConfiguraonsforPNOmaonII 
HowtochangeModes:StandAlone&Network 43‐45
Other Kits 46
Technician’sServiceKit 
PMIIUpgradeKit(81525)&PMIIMIDIUpgradeKit(81529)  47
QRS Remote Control 48
Troubleshoong 49
Warranty Informaon 50‐51
5YearWarrantyInformaon[CerfiedInstallerInstallaonsOnly] 
40

Introducon
3
July 2013
QRSispleasedthatyouhavechosentheQRSPNOmaonII™RetrofitKit,thesuperbretrofitkit
forautomangacouscpianos.Thisproductbringsalevelofexcellenceinreproducinglive
performancesonthepiano.Itismadepossiblebymanyremarkabletechnicalinnovaons.
However,inspiteofitshighlevelofsophiscaon,thisretrofitkitiseasytoinstallandservice.

Beforebeginningtheinstallaon,takemetoread“MakeCertaintheKitFits,”toensurethat
thepianowillindeedacceptthekit.This kit will NOT fit into a spinet piano. Familiarizeyour‐
selfwiththepartsinthekitbeforeproceedingandthenlettheinstruconsguideyou.

Allpianokeyshaveatendencytoreactdifferently.Thekeysolenoidsprovidethreeadjust‐
ments:thefirstadjuststheamountofplungerthrowtomatchthatofthekey‐tailli,thesec‐
ondsetsthelostmoonbetweenthekeytailandtheplungerpandthethirdadjuststhe
forceofeachkeysolenoid.

Althoughthekithasbeenprovidedwithenoughsolenoidstoplay80notes,theinstrument
hasbeendesignedtosupporttheenre88‐noterangeofthemodernpiano.Theaddional
partsrequiredmaybepurchasedseparatelyifan88‐noteinstallaonisdesired.

ThestandardPianomaonkitcomeswithapedalsolenoidbutwillalsoruninmagicpedal
modeifthePedalSolenoidisnotpresent.Thepedalsolenoidisconnectedtothepowersupply
bya4posionplug.ThePedalSolenoidwillacvatethetrapwork,thereforeliingthedamp‐
ersoffofthestringsasarealpianistwould.In“MagicPedalMode”thekeysolenoidscontrol
thesustaineventsbyextendingnoteduraonstothecorrespondingpedalONevent.

Theinstrumentusesrelavelylowvoltagessuppliedbyanisolaontransformer.Lowvoltages
eliminatethedangerofelectricalshocktotheinstaller(BelowULlimitof41V).Theelectronics
arefullyshieldedtopreventelectromagnecinterference.

Youwillneedsomematerialsnotprovidedwiththekittocompletetheinstallaon.

SteinwaygrandpianosrequirespecialSostenutotrapworknotsuppliedwiththestandardkit.
OrderQRSpartnumber70897

Parts List
Grand Kit ‐Item #815002 [WithoutRecordOpon]
4
July 2013
Item #2 Item #3 Item #4 QTY Descripon
76040  1QRSAmplifiedSpeaker
81500  1PMIIKit‐Grand
8012480124061PMIIPLPxPinLightExtension(PLx)
501282Cable:1/8”Maleto1/8”Male‐6.5’
501262Cable:USBAMaleto5‐PinUSBMiniBMale
501411Cable:USBAMaletoUSBBMale
790185B1Cable:PNOscanextensionribbon,black‐72”
56064334Screw
80108 1PMIIProcessorAssembly
80108A1PMIIProcessor
9900261Cable:1/8”MaletoTwinRCA‐8’
70120 516‐NoteDriverBoardMountedonchassis
701165Screw,6x1/4”SheetMetal
70120C5ChassisREVC
701225DriverCircuitBoards
75210 PowerSupplyRev2
79226 1QRS32GBSDCardw/Music
79232 1Wi‐FiDevicew/PowerAdapterandEthernetCable
82797 1OwnersPackOut
703884AAABaeries
733981PMIIBigBuonRemote
71009 1SplitLoomTubing
71010 3Clamp,RCable(7/8”Black)
70253 1OwnersWarrantyRegistraonCard
60205 1CablePackage:
8114331ProcessortoNoteDriverSignalRibbonCable
8114371PowerSupplytoNoteDriverPowerCable
8114391ProcessortoPowerSupplyRibbonCable48”
81159021UserControlBoxCable(ProcessortoFE6’)
702631PowerCord3’
703481ExtensionCord8’Black
71500B  1Rail&ComponentsAssembly
70050A1NoteRailAssembly‐Grand(2Rails&80Solenoids)
700651SolenoidRailCover
701301PedalSolenoidAssembly
707431UniversalSostenutoAssembly(SteinwaySostenuto70897‐SpecialOrder)
74270D1SustainTrapworkAssemblyREVD
70083F80KeySolenoidPlungers4.5”[FeltTip]“Nokey‐tailfeltrequired”
70400A 1SmallPartsBag:
700582DualSolenoidMounngPlate
700544RailMounngPlateBolt
700564RailMounngPlateNut
700628RailMounngBracket
700788RailBracketMounngScrew10/32x5/16”
700798#10FlatWasher
700758#10ExternalStarLockWasher
7008038#10x1”Screw
702221LeSoShiBracket
702241RightSoShiBracket
702261AxelRod
702281AxelRodlockNut
702362NylonWasher
701135NoteDriverMounngBracket
7013856/32x1/8”TrussHeadScrews
7020410CableTie
702084RibbonCableClamp
702188PowerCordClamp
70129161”CableClampScrew
7007688/32x1/4”Bolt
701904FenderWasher
70178210/32x1/2”Screw

Parts List
Upright Kit ‐Item #815022 [WithoutRecordOpon]
5
July 2013
Item #2 Item #3 Item #4 QTY Descripon
76040  1QRSAmplifiedSpeaker
81502 1 PMII Kit ‐Upright
8012480124061PMIIPLPxPinLightExtension(PLx)
501282Cable:1/8”Maleto1/8”Male‐6.5’
501262Cable:USBAMaleto5‐PinUSBMiniBMale
501411Cable:USBAMaletoUSBBMale
790185B1Cable:PNOscanextensionribbon,black‐72”
56064334Screw
80108 1PMIIProcessorAssembly
80108A1PMIIProcessor
9900261Cable:1/8”MaletoTwinRCA‐8’
70120 516‐NoteDriverBoardMountedonchassis
701165Screw,6x1/4”SheetMetal
70120C5ChassisREVC
701225DriverCircuitBoards
75210 PowerSupplyRev2
79226 1QRS32GBSDCardw/Music
79232 1Wi‐FiDevicew/PowerAdapterandEthernetCable
82797 1OwnersPackOut
703884AAABaeries
733981PMIIBigBuonRemote
71009 1SplitLoomTubing
71010 3Clamp,RCable(7/8”Black)
70253 1OwnersWarrantyRegistraonCard
60205 1CablePackage:
8114331ProcessortoNoteDriverSignalRibbonCable
8114371PowerSupplytoNoteDriverPowerCable
8114391ProcessortoPowerSupplyRibbonCable48”
81159021UserControlBoxCable(ProcessortoFE6’)
702631PowerCord3’
703481ExtensionCord8’Black
70051 1 Rail & Components Assembly ‐Upright
70050A1NoteRailAssembly‐Grand(2Rails&80Solenoids)
70074 80 Foam ‐Lost Moon
701301PedalSolenoidAssembly[OponalVercalPedalSolenoidLier#51045]
70083R 80 Key Solenoid Plungers 4.5” [Rubber Tip]
70400A 1SmallPartsBag:
70061 80 Felt ‐Lost Moon ‐Upright
700582DualSolenoidMounngPlate
700544RailMounngPlateBolt
700564RailMounngPlateNut
70123 8 Rail Mounng Bracket ‐Upright
700788RailBracketMounngScrew10/32x5/16”
700798#10FlatWasher
700758#10ExternalStarLockWasher
7008038#10x1”Screw
702221LeSoShiBracket
702241RightSoShiBracket
702261AxelRod
702281AxelRodlockNut
702362NylonWasher
70115 5 Note Driver Mounng Bracket ‐Upright
7013856/32x1/8”TrussHeadScrews
7020410CableTie
702084RibbonCableClamp
702188PowerCordClamp
70129161”CableClampScrew
7007688/32x1/4”Bolt
701904FenderWasher
70178210/32x1/2”Screw
70084 1 Key Tail Felt 1’‐1/16”

Introducon
6
July 2013
Make Certain that the Kit will Fit!

Allkitsplay80notes,excludingthefirstandlast4keysofthestandardpianokeyboard.Thefollowingquesons
shouldbeaskedbeforebeginninganinstallaon:

1.Isitagrandoruprightpiano?Thekitwillnotfitintoaspinetpiano.

2.Isthekeybedmadeofwoodorawood‐veneeredlaminate?

3.Doesthepianohavearangeof88notes,extendingfromlowAtohighC?

4.Isthekeyframemadeofwood?

5.Isthepianowell‐regulatedandingoodmechanicalcondion?.

6.Doesthepianohavesufficientspacebeneaththesoundboardorinsideanuprighttomountthepedalsolenoid&
powersupply(5.25"x5.25"x12.5")?

7. Canthebackofthekeyframebecutaway13/16"?
Tools Needed
PaperWoodChisel
PencilAwl
MeasuringTapeWoodGlue
LongStraightedgeSprayPaint(Black)
AdjustableFrameSquareSandpaper(Assortment)
Screwdriver(Assortment)PalmSander(Oponal)
PowerScrewdriver(Oponal)JigSaw
Socket(Assortment)JigSawBlades(Assortment)
11/32”NutDriverPowerDrill(RightAngleOponal)
5/16”NutDriverDrillBits(Assortment)
Hammer 1‐3/4”ForstnerBitorFlat(paddle)Bit
HacksawCenterPunch
MetalFileCircularSaw‐71/2”blade(Oponal)
RaspRouter(Oponal)
UlityKnifeVacuumCleaner
PlascCungBoard 

Introducon
7
July 2013
Piano Acon Regulaon
Thisdiscussionisnotintendedtobeacompletecourseongrandaconregulaon,butrathermayprovehelpfulinrestoringtheacontoproperperformance.Proper
alignmentofaconparts,andkeyeasingareallveryimportantstepsintheregulaonprocedure.Thefollowingprocedureassumesthatthispreliminaryworkhasbeen
checkedandperformedasnecessary.Beforeremovingtheaconfromtheaconcavity,evaluateaconregulaon.Iftheaconisnotwellregulated,properperfor‐
manceofthesystemcannotbeexpected.

DuringtheinstallaonprocessofthePNOmaonIIPlayerSystem,itisquitepossiblethataconregulaonwillbedirectlyaffected.Aporonofthekeyframeandback
railclothwillberemovedsothatthenotesolenoidplungerscancontactthekeytails.Thisoperaonmaycausethekeytailstobelowerthantheiroriginalposion.The
resultoflowerkeytailsisanincreaseinbothkeyheight,andhammerstrikedistance.Restoringthestrikedistancetospecificaonsbyturningoutthecapstanscrewsis
nottheproperremedy.Alwaysre‐workthebackrailheightsothatthekeyheightisatitsoriginalposion.

‐Arethekeyslevel?
‐Dothehammersletoff1/8inthebass,taperingto1/16inthehightreble?
‐Isthedrop1/16belowthepointoflet‐off?
‐Isthehammerlinestraight?
‐Arethehammershanksapproximatelyoneshankthicknessabovethehammerrestrail?
‐Isthereadequateaer‐touch?

Withtheacononaflat,cleanworkbench,measureandrecordthefollowing:
Naturalkeyheightatbassandtrebleends.
Sharpheightabovenaturals.
Keydip;bothnaturalsandsharps.
Theheightofthefirstandlasthammersineachseconoftheacon.

Replacethekeysandaconstackontheaconframe.Refertotheregulaonmeasurementsrecordedearliertoseeifregulaonhasbeenaffectedbythemodificaons
totheaconframe.Ifkeyheight,keylevel,orstrikedistancearedifferentthanpreviouslyrecorded,stepsmustbetakentorestoreproperregulaon.

Torestorekeyheight,replacethebackrailclothwithoneofathickerdimension.Removetheaconstackandkeys.Aerremovingtheoldbackrailcloth,besurethat
alltracesofgluehavebeenremovedfromthebackrail.Replaceafewoftheendkeysandtryvariousthicknessofbackrailcloth,withoutglue,toballparkthecorrect
keyheight.Lightfingerpressureonthecapstanscrewwillapproximatetheforcethatisnormallyonthecapstan.Setkeyheightwiththebackrailclothat,orslightly
belowthedesiredkeyheight.

Whenyouaresasfiedthatyouhavethebestchoiceofbackrailcloth,gluethematerialtothebackrail,leavingtherearedgeunglued.Nameboardfeltisavailableina
fewdifferentthicknesses,andcanbeusedforfineadjustmentswhengluedunderthebackrailcloth.

Althoughkeyheightcanbereestablishedquiteaccuratelyusingtheaboveprocedure,somekeylevelingistobeexpectedwhenreplacingbackrailcloth.

Rememberthatsubsequentaconregulaonadjustmentswillaffectthosealreadyperformed.Topreparetheaconforfineregulaon,dothefollowingquickly:

Checkorsetrepeonleverheightsoitisslightlyhigherthanthejack.Duringyourfinalregulaon,tripthejacktenderwithyourfingerandreleaseitslowly.Ifregulat‐
edproperly,youwillbeabletofeelthejackbrushingtheknuckleasitisreleased.Thejackmustreturncompletelyundertheknuckle.

Setstrikedistanceto13/4.Besurethathammershanksareabovetherestrail.

Checkorsetjackposionsothatthebackedgeofthejackisalignedwiththebackedgeoftheknucklecore.

Setlet‐off1/8fromstringinthebass,taperingto1/16inthehightreble.Makesurethatyouhavesomedropaerescapement.

Setdropto1/16belowlet‐off.

Withtheabovepreliminarystepscompleted,levelkeysasnecessarytotheirfinalspecificaon.Notethatwithkeyheightatthesamespecificaonasitwasbeforeac‐
onframemodificaon,keydipshouldbecorrect(assumingthatthedipwascorrectpriortotheinstallaonprocedure).Also,damperlimingisreestablished.
Checkorsetrepeonspring.Thespringshouldcarrythehammerupwardwithasteadymoon,withoutkicking.

Withthepreliminaryaconregulaondone,youarereadytoestablishthestrikedistanceandkeydipmeasurementsthatwillresultinproperaer‐touch.Sincethekey
height/keydiprelaonshiphasbeenreestablished,considervaryingonlythestrikedistancetogettheproperaer‐touch.Ifyouareworkingonanolderinstrument,
considervaryingbothstrikedistanceanddiptoarriveatanacceptablecompromise.Selectsamplekeyswithwhichtowork,likethefirstandlasttwokeysineachsec‐
on.

Depressyourfirstsamplekeyveryslowly,stoppingitsmovementjustaerletoff.Looktoseeifthereisaddionalkeytravelle.Ifthereisnoaddionalkeytravel
aertheletoffpoint,thereisnoaer‐touch.Keydipwillhavetobeincreased,orstrikedistancewillhavetobedecreased.Ifthereistoomuchaddionalkeytravel
aertheletoffpoint,thehammermayblockagainstthestringswhenthekeyisplayedfullyintoitsdip.Keydipwillhavetobedecreased,orstrikedistancewillhaveto
beincreased.Besurethatthesharpshavethesameaertouchasthenaturals.Asasecondcheck,seethatwiththekeyfullydepressed,thereissllsometravelleat
thejacktender.

Whenyouhavethekeydip/strikedistanceestablishedonyoursamples,setyourkeydiptoyourestablishedspecificaonuniformlythroughouttheacon.Youarenow
readyforthefinalregulaon.
Usingyournewstrikedistancemeasurements,carefullyrepeattheaboveoutlinedstepsforthefinalme.

Installaon Procedure
8
July 2013
Upright Piano Installaon ‐Recommendaons...
ThisseconoutlinesthedifferencesbetweentheinstallaonoftheQRSPNOmaonIIretrofitkitinagrandpianover‐
susanuprightorvercalpiano.Thedifferencesarerelavelysmall,andaninstallerfamiliarwiththeprocedurefor
installaoninagrandpianoshouldhavenodifficultycomplengthistypeofinstallaon.

Thedifferencesareasfollows:
1.Inavercalpiano,theenremechanismishiddenfromviewwithinthecabinetryofthepianoitself,andconse‐
quentlytheinstallercanplacethecomponentsanywhereitmakessensetodoso.

2.Sincethemechanismishiddenfromview,nosolenoidrailcoverisrequired.

3.Thetrapworkisverydifferentfromthatofagrandpiano,andrequirestheinstallertouseaspecialpedalsolenoid
bracketmadespecificallyfortheupright.Thisisaspecialorderitem!

4.Inavercalpiano,theenrekitisinstalledbelowthekeybed.Inmostcases,thebackrailandbackrailcloth
shouldberelocatedtowardthebackedgeofthepianokeys.IMPORTANT********caremustbetakentofirstmeasure
thekeydipatthebackendofthekeysbeforeanyworkbegins.Secondly,aerthebackrailhasbeenrelocated,you
mustensurethatthekeydipisexactlythesameasitwasbeforestarng.Ifitisnot,youmusteithertrimthebackrail
orshimituptoitsoriginalmeasurement.

5.Specialuprightdriverboardmounngbracketsarerequiredformounngthedriverboardstothesolenoidrail.
Thesebracketsare3”longandwillallowthedriverboardandchassistohangbelowthesolenoidrailwhencompleted.

6.SPECIALNOTE****Ifthedriverboardsaremountedupsidedown,youcanreversetheplayingorderofthenotesby
selecng“InvertKeybed”inthe“PlaybackParameters”seconofPMII.

7.Thepowersupplyandtheprocessorboardaremountedinsidethecabinetofthepianoinanyplaceconvenientto
theinstaller.Makesuretheelectricalcablesdonotinterferewithanyofthemechanicalleverswithinthepiano.

8.Itisnecessarytocuta1”holedirectlythroughthesoundboardofthepianotowardstheboomofthepianoatthe
endwherethepowersupplyismounted.Thiswillallowthemainpowerplugtoeasilybepluggedintoawalloutlet.
Thisholewillnotaffectthesoundofthepianoinanyway.

9.Alignmentofthesolenoidrailismadebylayingawoodensckatthetopbackedgeofthekeysandcarefullytrans‐
ferringthecenterlineofeachkeyontothewoodensck.Thissckwillbecomeyouralignmentsck,andthesemarks
willbeusedtolocatetheproperposionforyousolenoids.Rememberthatastandardinstallaonis80notesandthe
pianos88notes.Startwithnote#5andendwithnote#84andslideeachpairofsolenoidsindirectalignmentwith
yourmarksonthealignmentsckandghtenthe11/32”nuts.

10.Smallerspeakersaresuppliedwiththeuprightkit.
GeneralRecommendaons

Installaon Procedure
9
July 2013
...Upright Piano Installaon ‐Recommendaons
Mount two brackets. One on each side of each speaker . Use two screws per bracket.
Attach brackets to piano.
Twin Speakers for Upright Installaon # 76047

Installaon Procedure
10
July 2013
Preparing the Key Solenoid Rail
Inthischapter,wedeterminethethrowofthekeysolenoidplungerinrelaontothepianoacon’skey‐tailtravel.
Wealsowalkthroughtheprocessofkeysolenoidalignmentwithrespecttothepianoaconskeytails.Whenthis
chapter’sworkhasbeendone,thesolenoidrailwillhavetheproperrailheightandplungerthrow.Themounng
bracketswillbeinplaceandreadyformounngtothepiano.


Toolsneededincludethe2oponalrailsupportbracketsa11/32"nutdriver,
tworailbracketmounngscrews,screwdriver,hacksaw,metalfile,rulerandapencil.Thepianoaconisonyour
workbenchandthekeysarefacingawayfromyou.

ThePianomaonKeySolenoidRailisshippedassembled.
Itscomponentpartsareasfollows:
Key Solenoid Plunger Throw...
Step 1.TotakeadvantageofPNOmaon'sbestreproducingcapabilies,itisessenalthattheplung‐
erthrowisslightlygreaterthanthekeytailli.

Notethefollowingmeasurements:
B.MeasuretheboomofthekeytailtothekeybedattheKEYTAILUPposion.
A.MeasuretheboomofthekeytailtothekeybedattheKEYTAILDOWNposion.
A
B
Keybed
Keyframe
Step 2. Takethekeylimeasurement“C”aboveandadd1/16"tocompensateforthefeltplung‐
erp.Thisisthemeasurementusedtofindtherestposionoftheplunger.
B=___________
A=___________

B‐A(C)=__________
Plunger Throw = C + 1/16” ______________

Installaon Procedure
11
July 2013
...Key Solenoid Plunger Throw
Step 3.Holdtheplungerinits"ON‐HOLD"posion.
ThisOn‐HoldposioniswheretheTOPofthePlungerBodyisflushwiththe
topofthesolenoid.
Posionagauge,apieceofwoodorcardboard,andmarkthelocaonoftop
ofthePlungerTip.
Releasetheplunger.
Step 5.TurntheKeySolenoidCaptomovethePlungerTiptoyourmark.

NOTE:Ifthecapwon’traisetheplungerhighenoughbecauseitisght
againstthesolenoidhousing,nomorethreads,removetheplungersand
insertLost‐Moonfeltwashers.

Step ‐Final.Adjustalllostmooncapstothesameposion.
Step 4.Fromtheposionmarkedinstep3,usearulertomeasurethe
Plunger Throw distance(step2)andmarkyourgauge.
Plunger Tip-Felt
Plunger Stem
Plunger Body
Key Solenoid
Solenoid Cap
Used to adjust Plunger Throw

Installaon Procedure
12
July 2013
Key Solenoid Rail Assembly ‐Solenoid to Key Alignment
Withthepianoacononyourworkbenchandthefrontsofthekeysfacingawayfromyou.Placethesolenoidrailon
theworkbenchinfrontofthekeytailsandputtheplungersinsidethesolenoids.Turnthesolenoidrailassemblyonits
side,sothattheplungersarenowparalleltotheworkbenchsurfaceandthefeltplungerpsaretouchingtheback
endsofthepianokeys.Thefirstplungershouldstartallthewaytothelesideoftherail.Securetherailandacon
withthetwoclampssotheywillnotmoveduringthealignmentprocess.Markwhichsideisbassandtreble.Make
sureallthesolenoidplatesarefreemoving.Iftheyarenot,usean11/32”nutdrivertoloosenthem.

Thespacingbetweenseconshasbeenheldincheckbytheintroduconofsolenoidassemblypairsadjacenttothe
breaks.Becausenotallseconsonapianowillhaveanevennumberofnotesplayedinthem,thosewhichhavean
oddnumberwillrequireamodifiedsolenoidassemblytoprovidetheaddionalnoterequired,andthismodifiednote
willbeplacedadjacenttoaseconbreakorateitherend.

Countthenumberofkeystobeplayedineachsecon.Ifthereisanevennumber,alignthesolenoidswithplungers
alreadyontherailwiththecentersoftheirrespecvekeytails.Ifthenumberofkeystobeplayedisodd,simplyre‐
moveoneofthesolenoidsfromthedoublemounngbracketandconnuetothealignmentofthenextsecon.
Ifnecessary,cutawaytheunusedporonoftherailendswithahacksawandfileoffallburrswithametalfile.Be
carefulnottocutawaytherailbracketmounngholes,orcutanysolenoidwires.

Mountall8railsupportbracketstotherailwiththe10‐32X7/16"screwsand#10externalstarwashers.

Note: The distance from the boom of the keybed to the boom of the keytail felt should be equal to the distance
from the top of the solenoid plunger to the top of the rail mounng brackets.

Atthisstage,thekeysolenoidshavebeenmatchedupwiththeircorrespondingkeytails.Therailhasbeencutto
length,andtherailbracketsaachedinplace.Puttherailasideforfutureinstallaoninthepiano.


Installaon Procedure
13
July 2013
Modifying the Keyframe ‐Grand...
If you are installing a QRS PNOscan II record system you should incorporate it’s installaon while modifying the pi‐
ano acon. The PNOscan II has it’s own installaon manual.

TheKeyframewillprobablyrequiremodificaontoaccommodatetheKeySolenoidRailAssembly.Thekeytailsmust
protrudeoverthebackoftheaconframe,sotherearofthekeyframemustbecutaway.

Toolsneededforthischapter:pencil,paper,woodchisel,straightedge,jigsaw,palmsander&sandpaper,ulityknife,
woodglueandanassortmentofscrewdrivers.

Atthispointintheinstallaon,thepianoisonitslegs,thefallboard,keyslip,andcheekblockshavebeenremoved,
andthelyreissllinplace.ThepianohasbeenmeasuredtoverifythattheNoteRailAssemblywillfit.

Measurethedistancetheaconshiswhenthele (unacorda)pedalispressed.(Ifahammerli railisinstalled,
measurethedistancethehammersliforagivenmovementofthesopedallyrelirod.)Measurethedistancethe
so shi (unacorda)pedalli rodtravelswhenthepedalisdepressed.Writethesemeasurementsdownforlater
trapworkinstallaon.

Removetheenregrandoruprightpianoaconfromthepianoandplaceitonaclean,levelworkbench.Donotde‐
pressthekeyswhileslidingtheaconinoroutofthepiano,orbrokenhammerswillresult.

Examinetherelaonshipsofthekeytailstotherearedgeofthekeyframe.Eachkeytailmusthaveatleast1‐1/4"ex‐
posedbeyondtherearedgeofthekeyframe.Ifthisisnotthecase,thenthekeyframemustbemodified.Ifmodifica‐
onsarerequired,followthesesteps:

IMPORTANT:Before removing the hammer acon from the key frame acon you must first measure the distance
from the boom of the key frame acon to the boom of the piano key. Next, depress the key and measure once
again, from the boom of the key frame acon to the boom of the key. Write these measurements down for later
use.

Withascrewdriverremovethewoodenkeystoprailfromthekeyframe.
Withascrewdriverremovethehammeraconfromthekeyframe,beingcertaintonoteanyscrewlengthdifferences
inthe8or10woodscrewsusedtosecuretheacontothekeyframe.Itisalwaysadvisabletoputthesamescrewinto
thesamehole.
Verifythatthekeysareproperlynumberedbeforeremovingthem.Removeallkeysexceptkeynumbers5,84,andthe
breakkeys.Withapencil,mark1‐1/4"infromtheendsofthekeytailsontothekeyframe.Allowanaddional1/4"at
eitherendofeachsecon.Withastraightedgetoguideyou,connectthemarksineachsecon.Removaloftheback
railfeltmayberequiredbeforethisstep.(Figure1)

Thebackrailfeltrestsbeneaththekeytails,andcanberemovedbyusingasharpulityknifeorinsomecasesawood
chisel.Placetheremovedbackrailfelttothesideforfutureusewhenrelocangandre‐gluinginitsnewposion.

Installaon Procedure
14
July 2013
...Modifying the Keyframe ‐Grand...
Thekeyframemustnowbecut.Removeallkeys.Withajigsaw,followthepencillineandcutawaytheframeineach
seconbetweenthebreaks.
Withthepalmsander,cleanupalltheroughedges.

Theaconisnowreadytobeusedtolocatetheposionsoftheslotsthroughthepiano'skeybed.

Placethekeyframeintothegrandpianocaseandsecureitwiththerightandlecheekblocks.Withashort,sharp
pencil,reachintothekeyboardcompartmentandmarkthenotchedrearmostlimitsofthekeyframe,includingthe
rightandleextremesofeachnotch.Theselineswillbeusedtoidenfytheexactlocaonsofthekeybedslotsonthe
undersideofthekeybed,sobecertaintomakewell‐definedpencillines.

Removethekeyframeandregluethekeytailfeltflushwiththebackofthekeyframe.Measuringthekeydipbefore
andaerreposioningthefeltisrecommended.Ifitisthesame,lessregulaonwillberequired.Ifithaschanged,
simplyshimthebackedgewithathinpieceofcardboardtomaintaintheoriginalkeydip.

Newerkitsincludekeysolenoidplungerswithfeltps.Thereforewenolongerprovidethefeltstripbelow.

Note:Thisisagoodmetoinstalltheoponal88noterecordstrip(70014).SeethePNOScanrecordstripinstallaon
manual.

Placeallofthekeysbackonthekeyframe.

Re‐installthehammeracononthekeyframe,usingthesame8‐10screwsyouremovedearlier.

Re‐installtheKeyStopRail.

Atthispoint,thegrandaconmodificaonsarecomplete.
For best player performance it is important that the acon be regulated properly.

Installaon Procedure
15
July 2013
...Modifying the Keyframe ‐Grand
1-3/4” to 2” slot
1/4”
Back edge of the
keyframe drawn on
the top of the keybed.
Ends of the sot.
Lines transferred from the
top of the keybed.
Lyre
Treb
Leg
Bass
Leg

Installaon Procedure
16
July 2013
Cung the Keybed Slot...
Toolsneededforthischapterincludeacircularsaw(sabresawwithasufficientlylongblade/routermaybeused),a
powerdrillwithasharp1‐3/4"Forstnerbit(orwoodboringbit),variousscrewdrivers,aframesquare,apencil,atape
measure,andpaintthatmatchestheundersideofthepiano.

Atthispointthepianoisonitslegs,theaconisoutsideofthepianocaseandhasbeenmodifiedtoallowthekeytails
toprotrudeovertherearofthekeyframeby1‐1/4".Feltsareaachedtotheundersidesofeachkeytail,andthe
originaltrapworkissllinplace.

Next,haveanassistantpressthesustainpedal.Whilehedepressesit,measurethedistancethepedallyreli rod
movesandwriteitdown.Likewise,measurethedistancethedamperli railriseswhenthepedalispressed.This
measurementcanbetakenfrominsidethecase.Next,marktheexactlocaonoftheupwardextensionofthepedal
lyre'svercalrodsontothekeybedboom.Setthesemeasurementsasideforlatertrapworkinstallaon.

RepeattheabovestepwiththeSostenutopedal(ifitexists).

Theremaybetwoormoreaconstopblocksinsidethecase.Theseblocksstoptheinseronofthegrandpianokey‐
boardattheproperlocaonandpreventitfromliingupoffthekeybed.Intheeventthattheseinterferewiththe
slottobecut,removebyforceappliedbyasharpchiselandhammer.

Removethelyrefromthepiano.

Turnthepianoonitsflatorbasssideandsecureit.Makeavisiblepencilmarkoutliningthebassandthetreblelegs.
Next,removeeachlegmarkingthemaccordingly(bass,treble,tail)andplaceinasafeareatopreventdamage.

Useapencilandmarkthelyrerodstrikepoints(wherethelyrerodshittheoriginaltrapwork)ontheboomofthe
keybed.Removealltrapwork,andotherpartsthatmayinterferewiththekeybedmodificaonsfromtheundersideof
thepiano.

Usingatapemeasure,recordthedistancefromthefrontofthepianocasetothemarksyoupreviouslymadeinside
thecase.Dothisonboththebassandtrebleend.Callthisthedepthmeasurement.
Transfertheslotmarksmadeontheinsideofthepianocasetotheundersideofthekeybed.
For Upright installations, See Page 9.

Installaon Procedure
17
July 2013
...Cung the Keybed Slot
Takingintoaccountanyvariaonsinthecontourofthefrontofthepianoandusingtheframesquarealignedwiththe
markjustmadeonthefrontundersideofthekeybed,measureandmarkthedepthmeasurementontheundersideof
thekeybed.Next,measure1/4"towardthefrontofthepianoscribingastraightlinebetweenthebassandtreble
notes.Thenmeasure1‐3/4"towardtherearofthepianofromthenewlyscribedline.Wheneverpossiblewerecom‐
mendkeepinginthebreaks.

Eachslotshouldbeatleast1‐3/4"wide(2”Maximum).Thelongitudinalcenterofeachslotmustcorrespondtothe
centerlineofthefeltpaddedkeytails,whichis1/2"infromtheendofeachkey.

Verifythemarksjustmade.Drillasmallexploratoryholewithineachslotandcomparetheposionoftheslotwiththe
marksmadeinsidethecase.Correcteachslotposionasrequired.

Usinga1‐3/4"Forstnerbit,drillholescenteredattheendsofeachslot.

Cutthelengthsofeachslotwithasabresaw,circularsaworrouter(beingextremelycarefulwithallpowertools),con‐
necngtheendholesjustmade.Avoidcungawaythebreaksbetweentheslotsifpossible.

Rasporsandtheslotssmoothandsquarewiththesurfaceofthekeybed.Bevelthetopmostslotedgeswithcoarse
sandpaper.Theslotsshouldbesealedwithpaintmatchingtheboomofthepiano,oraclearsealanttoretarddrying
ofthewood.

Atthispointtheslotshavebeenposionedandcut.NowisthemetoremounttheSoShiLever.
SideViewofModifiedKeyframeandKeybed

Installaon Procedure
18
July 2013
TheSoShi(unacorda)pedalmechanismusuallyincludesalong,cast‐ironbellcrankleverwhoseshortarmpro‐
trudesthoughthekeybedtoengageagroovecutintheboomofthekeyframesomewherebeneaththetreblesec‐
on.Theshipedalinthisconfiguraondoesnothavetopassthroughthesolenoidrailand,therefore,mayoenbe
leuntouched.However,onsomepianosyoumayhavetomovethesoshitowardthefrontofthepianotoaccom‐
modateforthewidthoftherail.Forthepianosthatneedmodificaon,bracketshavebeenincludedinthekitforeasy
readjustment.It is a good idea to leave one of the original wooden blocks aaching the soshilever to the key
bed, and only use one of the brackets supplied. This will make adjusng the SoShilever much easier.Thebrack‐
etscanbeaachedtothekeybedwithfour#10x1”mounngscrews.Thepedalmustshitheaconthesamedis‐
tanceasbeforewiththesamepedalmovement.Refertothemeasurementstakenwhenthetrapworkwasremovedto
verifythatthisbehaviorhasbeenretained(See“ModifythePianoAcon”secon).

Measuringfromthefrontedgeoftheslotthereshouldbe2‐1/4inchestothefrontedgeoftheso‐shihole.
Installing the So‐ShiLever
Slot
2-1/4”
Lyre Brace

Installaon Procedure
19
July 2013
Installing the Sustain Pedal Trapwork...
Whenyouareatthepointwhereyouarereadytostartremovingtheoriginaltrapworksystemfromthepianowerec‐
ommendthatyoutracearoundthetrapcomponentsbeforeyouactuallyremovethem.Thisisjustagoodreference
shouldyouhavequesonsaboutleverage,strokeorplacementaeryouhaveremovedeverything.Youshouldalso
tracearoundanythingelseyouwillberemovingsuchasthepianolegs.

Itisnormallyagoodideatoinstallthenewtrapcomponents(exceptfortheSostenuto)aeryouinstallthesolenoid
railbecausethereisonlyonecorrectplacetherailcanbeinstalled,whereasthetrapcomponentsaresomewhatflexi‐
bleintheirplacement.Thefirstisdecidingifyouneedtomillanyareasofthekeybedbesidestherailslotitself.The
mostlikelyplacesthatwouldrequirespecialmillingwouldbetomillarecessfortheSostenutoactuatorassemblysoit
canbemountedabovethesolenoidrail.Anothercasewouldbetomillapocketinthekeybedtoaccommodatetheup
mostposionofthesoshileversuchasonaSteinway.Youmightbemillingaslotperpendiculartothesolenoidslot
tofitabridgesupportifyoucan’tleaveonewhenyoucutthemainslot.Dependingonthesituaonyoumayneedto
drillanewholeforthesustaindowel.Itisimportanttorealizethesepossibiliesbeforeyoucuttheslot.Youdon’t
wanttocuttheslot,cleanupthemessandinstallthesolenoidrailjusttofindoutyouneedtocutmorematerialto
accommodateapieceofthetraphardware!

Onceyouhavetheslotlaidoutontheboomofthekeybed(werecommendusingasoapstoneormedpgrease
pencil),itwillbemucheasiertoconceptualizehowyouwillconfigurethetrapsystem.Withthelinesdrawnexactly
wheretheslotwillbecut,youwillbeabletotellwhatobstacleswillneedtobemoves,modifiedorworkedaround.
Forinstanceifyouareinstallinga88noterail,youwillimmediatelyseewhatneedstobedonetothepianolegs.(you
shouldhavetracedaroundthelegsbeforeyouremovethem.)Youcanmeasurethetotalwidthofthesolenoidrailand
soshileverassembly,referencethismeasurementoffthefrontoftheslotlineyoudrewanddecideifyouneedto
movethelyreassemblyforwards.

Thechaptersthatfollowthisoverviewwillprovideexplanaonsandgraphicdetailsthatwillhelpyourealizetheideas
behindthehardwaredesign.Forthemostpart,youwillfindthatthehardwarewesupplywilladapteasilytoatypical
installaonbitkeepinmindthatthehardwarewehavedesignedcanbeeasilymodifiedtoadapttouniqueapplica‐
ons.Ifbendingalevertofityourparcularinstallaonfitsthebill,thenbendasneeded.It’syouringenuitythatfinal‐
izesthehardware’sconformity.
GeneralRecommendaons

Installaon Procedure
20
July 2013
1DrawaStraightlinebetweenthesustainholeinthekeybed,lyresustainpushrodandthePedalSolenoid.
11NotchtheSolenoidRailcoverwheretheTrapworkStraightBarenters
2Placethetrapworkonthekeybedsothatitfollowsthatline
3Fastenthetrapworktothekeybedwiththe4,31/2”screwsprovided.
4Screwthelockingnylonnutsontothe#8DamperTrayPushRodsothatitsupportsthedampertray.Screwthe2#8
nutswithawasherontheotherend.
5Insertthe#8DamperTrayPushrodontotheDamperTray.
6Alignthe#8DamperTrayPushRodwiththepredrilledholeintheTrapworkStraightBar.PuttheNylonCollarinthat
hole.
7PlacefeltorleatherontheAdjustableLyreRodLeverwherethesustainpushrodmakescontactwiththeAdjustable
LyreRodLever.
8AdjusttheLyreRodLeverunlitreachesoverthelyressustainpushrod.
9Adjustthe2#8Nutssothatthedampersfalltoafullrestonthestrings
10Tightenthenutsaerallthelostmoonisout.
12AdjustthePedalsothatthereis1/4”lionthedampertray
...Installing the Sustain Pedal Trapwork
1LyreRod 5NylonCollar9CarriageBolt13NylonMounngBlock
2AdjustableLyreRodLever6Nut10CarriageBoltNut14TrapworkStraightBar
3AdjustableLeverBolt7LockWasher11TrapworkBar“S”Shaped 
4SolenoidRailCover8DamperTrayPushRod12NylonWasher