Technics SX-PR950P User manual

ORDERNO. EMID0309005C1
A4
Digital Ensemble
SX-PR950P
Colour
(K) ...................Black
SPECIFICATIONS
SPECIFICATIONS

KEYBOARD 88 KEYS
SOUND GENERATOR PCM
MAX.POLYPHONY 64 NOTES
SOUNDS NUMBEROF SOUNDS:1025
SOUNDS(
990 SOUNDS+2ORGAN
DRAWBARS+33 DRUMKITS)
PIANO GROUP:
GRAND, UPRIGHT, ELECTRIC,
MODERN
SOUND GROUP:
STRINGS, VOCAL, GUITAR&
HARPSI,BRASS, SAX&
WOODWIND, ORGAN&
ACCORDION, SYNTH, BASS,
MALLET &ORCH PERC,
WORLD, PIANO MIXTURES,
ORCH MIXTURES, DIGITAL
DRAWBARS, DRUMKITS,
SOUND EXPLORER
SIMPLEPIANO supported
FAVORITES supported
PEDAL DAMPER, SOFT*, SOSTENUTO*
(*PROGRAMMABLE)
PROGRESSIVE PIANIST supported
TOUCH SENSITIVITY supported
EFFECT DIGITAL EFFECT, MULTI
EFFECT, REVERB, CHORUS,
BRILLIANCE
CHORUS supported
CONDUCTOR RIGHT 1, RIGHT 2, LEFT
TRANSPOSE ±12 NOTES
RHYTHMS NUMBEROF RHYTHMS:
128 RHYTHMS ×4VARIATIONS
RHYTHMS GROUP:POP,
ROCK, FUNC &SOUL, DISCO,
POPBALLAD, BALLAD, BALL
ROOM&SHOW,
8BEAT,16BEAT, USA, WALTZ &
TRAD,JAZZ &SWING, LATIN&
WORLD
METRONOME Supported
CONTROLS MAINVOLUME, APC/
SEQUENCERVOLUME,
BALANCE, MUTE, START/
STOP, INTRO &ENDING 1,
INTORO &ENDING 2, FILL IN1,
FILL IN2, COUNT INTRO,
SYNCHRO &BREAK, TEMPO/
PROGRAM,TAPTEMPO, FADE
IN/OUT, SPLIT POINT
AUTO PLAYCHORD MODE:BASIC, ADVANCED1,
ADVANCED2, PIANIST
MEMORY, ONBASS, CHORD
FINDER, LEFT HOLD

MUSICSTYLEARRANGER Supported
SOUND ARRANGER Supported
PIANO STYLIST Supported
ONETOUCH PLAY Supported
TECHNI-CHORD Supported
PANEL MEMORY 3BANKSX8
SEQUENCER 16 TRACKS
RESOLUTION:1/96 PERBEAT
STRAGECAPACITY:
APPROX.40000 NOTES (10
SONGSMAX.)
INPUT MODES:
EASYRECORD, REALTIME
RECORD, STEP RECORD
FUNCTIONS:
RECORD &EDIT,COPY&
PASTE, RANGEEDIT
COMPOSER 8PARTS:
BASS, ACCOMP 1-5,
DRUMS1,2
STRAGECAPACITY:
APPROX.13000 NOTES
INPUT MODES:
REALTIME RECORD, STEP
RECORD
FUNCTIONS:EASY
COMPOSER
PATTERN COPY, SEQ
TOCOMPOSER, LOADSINGLE
COMPOSER
MEMORY: 3BANKS
DISKDRIVE 3.5inch DISKDRIVE FOR2HD
(1.44 MB), 2DD (720 KB)LOAD,
SAVE, DIRECT PLAY, SONG
MEDREY, DISKTOOLS,
PREFERENCES
SOUND PART SETTING, MIXER,
MUSTARTUNING, KEY
SCALING, APCREVERB
SETTING, TECHNI-CHORD,
SOUND LOADOPTION, SOUND
ARRANGER
REVERB &EFFECT MICREVERB &EFFECT, TONE
CONTROL, REVERB, CHORUS,
MULTI, SOUND LOADOPTION,
MIXER
CUSTOMIZE DISPLAYTIMEOUT, DATA
PROTECTION, FAVORITES
SETTING, MIDI SETTING LOAD
OPTION, LANGUAGESETTING,
DISKPREFERENCES
CONTROL INITIAL, PEDAL SETTING,
PANEL MEMORYMODE, MUSIC
STYLEARRANGERMODE,
FADEIN/OUT SETTING

SOUND EDIT EASYEDIT, TONE, PITCH,
FILTER, AMPLITUDE, LFO,
EFFECT, CONTROLLER
MEMORY:
40,1USERDRUMKIT
MIDI PART SETTING, CONTROL
MESSAGES, REALTIME
MESSAGES, COMMON
SETTING, INPUT/OUTPUT
SETTING, MIDI PRESETS,
MODESETTING
DISPLAY LCD:
PAGE, CONTRAST, EXIT,
DISPLAYHOLD, OTHERPARTS/
TR
HELP Supported
DEMO Supported
TERMINALS PHONES X2, LINEOUT (R/
MONO,L), AUXIN(R/MONO,L),
MIDI (IN, OUT), PEDAL IN, MIC
(VOLUME)
OUTPUT 80W(40 W×2)
SPEAKERS 14 cm ×2, 6.5cm ×2
POWERREQUIREMENT 110 W
AC120/220/230-240V50/60 Hz
AC120V60 Hz(NORTH
AMERICAAND MEXICO)
DIMENSIONS(W×H×D) 141 cm ×161 cm ×97 cm (55x-1/
2”×63-3/8”x38-3/16”)
NET WEIGHT 98 kg (216.1lbs.)
ACCESSORIES ACCORD, INSULATORx3,
CLOTH, POLISH
2003 Matsushita ElectricIndustrial Co., Ltd. All rights reserved.
Unauthorizedcopying and distribution isaviolation oflaw.
1. Warning
Toprevent the risk of fire, smoke, orelectrical shock and to ensure safe operation, please be
sure to followthe safetyguidelines below.
1. Atplaces wherespecial caution isrequired, thenecessarysafety
precautionsareclearlylabeledor printed, for example, on the
cabinet, or on thepartconcerned. Please followthese safety

precautions, and alsothose listedintheOwner'sManual.
2. Parts whichhaveamarkinthecircuitdiagramor intheparts
list areessential for safety. Whenreplacing these parts, besure
touse onlythespecifiedparts.
3. Use thespecifiedtypes for internal wiring (double-insulated
wiring, etc.).
4. Whenreplacing parts on theACprimaryside(powertransformer,
electricswitch, electrical cord, noise-prevention condenser, etc.),
wind theleadwireand secureitbysoldering.
5. Donotlet thewiring comeintocontact withheat-emitting
devices (fuse resistor, radiator plate, etc.).
6. Whenreplacing thewiring, make surethat itisnotincontact with
theunfinishedor rough edgeofapart.
7. Whenreplacing thepowercord (exceptfor theplug-intype), tug it
from variousdirectionstoconfirm that itdoes notslipoutof
place.
8. Spacing
Ifsoldering was doneon theACprimarycircuit, confirm that the
interval betweenthesolderedterminalsor betweentheterminal
and surrounding metallicparts isat least theminimum required
(betweentheprimarycircuitand thechassis:atleast6.5mm;
betweenprimarycircuitterminals:at least 4.0mm;between
primarycircuitterminalsand secondarycircuitterminals:at least
6.5mm.).
2. SafetyPrecaution
2.1. Safetyprecaution
1. Beforeservicing, unplug thepowercord topreventanelectric
shock.
2. Whenreplacing parts, use onlythemanufacturer’srecommended
components for safety.
3. Check thecondition ofthepowercord. Replace ifwearor
damageisevident.

4. Afterservicing, besuretorestoretheleaddress, insulation
barriers, insulation papers, shields, etc.
5. Beforereturning theservicedequipmenttothecustomer, besure
tomake thefollowing insulation resistance test topreventthe
customerfrom being exposedtoashock hazard.
2.2. Insulation resistance test
1. Unplug thepowercord and shorttheprongsoftheplug witha
jumperwire.
2. Turn on thepowerswitch.
3. Measuretheresistance valuewithanohmmeterbetweenthe
jumperedACplug and eachexposedmetal cabinet part, suchas
screwheads, connectors, control shafts, handlebrackets, etc.
Measurements shouldrangefrom 4MOhm toinfinityfor
allexposedparts.
Fig-1
3. Owners manual
4. Howtoassemblethe piano
5. Howtoopen the top cover
6. Keyboard ranges
This keyboardfeatures TouchResponse, bywhichyou control the volume byplaying the keys
harderorsofter.
Fig-2

7. Partslocation Fig-3
Fig-4

8. Disassemblyinstructions
8.1. Removing thetop cover
1. Removethetop coverAfixing pinas shownin Fig-5 .
2. Lift up thetop coverA.
3. Removethetop coverBmounting screws(A×4pcs.)as shown
in Fig-5 .
4. Lift up thetop coverB.
Fig-5
8.2. Removing thekeyboard cover
1. Removethetop cover(see step“Removing the top cover ”).
2. Lift thesupportand removethethetop framewithclothmounting

screws(A. ×3pcs.).
3. Removetheguiderail lidsfrom theguiderails.
4. Matchthegearsofthekeyboard coverwiththenotches inthe
guiderail, and lift up thekeyboard coveras shownin
Fig-6 .
Fig-6
8.3. Removing thecontrol panel
1. Removethekeyboard cover(see step“Removing the keyboard
cover ”).
2. Removethecontrol panel mounting screws(A×7pcs. )as
shownin Fig-7 .
3. Slidethecontrol panel forward and pull out(as shownbythe
arrows).
Fig-7
8.4. Removing thekeyboard assembly

1. Removethecontrol panel (see step“Removing the control panel ).
2. Removethekeyboard assemblymounting screwslocatedon the
bottom ofthecabinet (A×10 pcs.)as shownin Fig-8 .
Fig-8
8.5. Key(s)
Disassembly
1. Removethekeyboard assembly(see step“Removing the
keyboard assembly ”).
2. Whileinserting athinplate topress downaclaw, pushtherearof
thekeyforward todisengagethekeyclawfrom thechassis.
3. Lift thekeyup toremoveit.
Note:
-Thekeyclawiseasilybroken. Donotapplyundueforce. Shoulda
keyclawbreak, itcanstill beused.
-Ifablack keyistobereplaced, itisnecessarytoremoveboth
adjacentwhite keys. Fig-9
/ / / /

Assembly
1. Insertthefrontpartofthekeyintothechassis.
2. Inserttheplate spring intothehammernotchas shownin Fig-10 .
3. Whileslowlylowering thekeyintothechassis, inserttheplate
spring intothenotchat therearofthekey.
4. Carefullyinsertthekeyintotheopening inthechassisand slide
thekeytowardsthereartolock itinplace.
Fig-10
8.6. Disassemblyofthepedal assembly
1. Removethepedal assemblyfrom thepedal box.
2. Disassemblethepedal assemblyas shownin Fig-11 .
Fig-11
8.7. Removing theLCD,CPLP.C.B., INV P.C.B. and CPRP.C.B.
-Removethecontrol panel (see step“Removing the control panel ”).
-Removethebracket mounting screws(A×8pcs.).
-Release theknobs.

LCD
1. RemovetheLCD mounting screws(B ×4pcs.).
CPLP.C.B.
1. RemovetheCPLP.C.B. mounting screws(C ×17 pcs.).
INVP.C.B.
1. Release theclawsofthe3P.C.B. holder.
CPR P.C.B.
1. RemovetheCPRP.C.B. mounting screws(D ×14 pcs.).
Fig-12
8.8. Removing theprintedcircuitboards
-Removethekeyboard cover(see step“Removing the keyboard
cover ”).
-Pull outtheconnectorson theprintedcircuitboards.
MAIN P.C.B.
1. Release theclawsofthe4P.C.B. holders.
RELAYP.C.B.
1. Release theclawsofthe5P.C.B. holders.
ASP.C.B.
1. RemovetheAS P.C.B. mounting screws(Ax2pcs.).
2. Release theclawsofthe5P.C.B. holders.
JACK P.C.B.
1. RemovetheJACK P.C.B. mounting screws(B x5pcs.).
2. RemovetheJACK P.C.B. mounting nuts (C x4pcs.).
HP/MIC P.C.B.
1. Removethekeyboard assembly(see step“Removing the
keyboard assembly ”).
2. RemovetheHP P.C.B. mounting screws(D x2pcs.)

3. Removetheheadphonejack mounting nuts (E x3pcs.).
4. RemovetheMICVOLknob.
5. RemovetheMICVOLmounting nuts (Fx1pc.).
8.9. Removing theDisk Driveunit
1. Removethekeyboard cover(see step“Removing the keyboard
cover ”).
2. Pull outtheconnector from theDisk Driveunit.
3. Removethechassison whichDisk Driveunitisattached(G x4
pcs.).
4. RemovetheDisk Driveunitmounting screws(H x4pcs.).
Fig-13

8.10. Removing theSpeakerboxes, wooferspeakersand tweeter
speakers
-Removethekeyboard cover(see step“Removing the keyboard
cover ”).
Removing speakerbox
1. Removethespeakerboxmounting screws(I x6pcs.).
Removing wooferspeaker
1. Removethespeakerbox.
2. Removethewofferspeakermounting screws(J x4pcs.).
Removing tweeterspeaker
1. Removethetweeterspeakermounting screws(K x4pcs.).
Fig-14
9. Service diagnosticfunction

The service diagnostic function makes itpossible to determine whetherthe various testmodes
pass orfail. The testmodes are completelyindependent of one another. Selecta testmode as
necessary, and run the test.
Tosetto the service diagnostic mode:
1. Press and holdtheC#3, D#3, C#4 keys, and thenturn on the
powerswitch. (referto Fig.15 )Fig.15
2. Aftertheservice diagnosticscreenisdisplayedon theLCD,
release thethree keys. (referto Fig.16 )
3. Use thepagebuttonstoselect therespectivetest.
Fig.16
9.1. ROMdevice test Fig.17
-Press theEXECUTE button tobeginthetest.

-Thetest result(OKor NG)isdisplayedwithintwentyseconds. If
thetest resultisNG, notonlytherespectiveIC, butalsoabreak or
shortcircuitintheADDRESS/DATABUS as well as inanyofthe
strobesignal lines maybethecauseofthefailure.(referto Fig.17 )
9.2. RAMdevice test Fig.18
-Press theEXECUTE button tobeginthetest.
-Thetest result(OKor NG)isdisplayedwithinafewseconds. Ifthe
test resultisNG, notonlytherespectiveIC, butabreak or short
circuitintheADDRESS/DATABUS as well as inanyofthestrobe
signal lines maybethecauseofthefailure. (referto Fig.18 )
9.3. Otherdevice test Fig.19
-Press theEXECUTE button tobeginthetest.
-Thetest result(OKor NG)isdisplayedwithinafewseconds. Ifthe
test resultisNG, notonlytherespectiveIC, butalsoabreak or
shortcircuitintheADDRESS/DATABUS as well as inanyofthe
strobesignal lines maybethecauseofthefailure. (referto Fig.19 )
9.4. FloppyDisk SAVE/LOADtest

Fig.20
-Insertaformattedfloppydisk intotheDisk Drive. Press theSTART
button tobeginthetest.
-Thetest iscarriedoutrepeatedly. Data issavedand loaded, and
thenthetwodata sets arecompared. Thenumberoftimes that
thetest results inOKor NG arecountedand displayedon the
LCD. Tointerruptthetest, press theSTOP button.(referto Fig.20 )
-EvenwhentheFloppyDisk Driveisfunctioning properly, thetest
canresultinNG. Ifthishappensfrequently, cleanthemagnetic
headsoftheFloppyDisk Drivewithacleaning disk. Then, change
thedisk usedintesting withanotherdisk andreperformthetest. If
thetroubleisnotsolved, itislikelythat theDisk Driveunitor
someotherpartofthehardwareisbroken.
9.5. Panel SW&LEDtest Fig.21
-Press all thebuttonson theControl Panel and confirm that the
corresponding LEDlights.
-IfanLEDfailstolight, thecause maybeadefectiveswitchor a
break inthesurrounding circuit, etc.

-Afterall thebuttonshavebeenpressed, all thePANELMEMORY
LEDslight. Ifall switches areOK, “ALL DEVICE OK”isshownon
theLCD. (Ifaswitchisdefective, nothing isshown.)(referto
Fig.21 )
-Tolightall theLEDs, press and holdtheDEMO button. IfanLED
failstolight, theLEDmaybedefectiveor theremaybeabreak in
thesurrounding circuit.
9.6. LCD moduletest (LCD adjustmentand confirmation)
Fig.22
-Press theWHITE/BLACK, CROSSTALK, SAMPLE or
CONTRASTbutton tobegintherespectivetest. (referto Fig.22 )
WHITE/BLACK:
All thedots lightinwhite and finallyblack. Thedisplaycanbe
heldbypressing theDISPLAY HOLDbutton.
CROSSTALK:
AnHpattern isshown. LCD crosstalkcanbeevaluated. Toexit
thistest, press theEXITbutton.
SAMPLE:
Several displaypatternsshownduring normal use areshown. The
displaycanbeheldbypressing theDISPLAY HOLDbutton.
CONTRAST:
Thetest pattern isshown. Adjust thecontrast bytheCONTRAST
control on therightoftheLCD. Toexitthistest, press theEXIT
button.
-Ifthecorrect displayisnotshownduring these tests, theLCD or
LCD drivecircuitmaybedefective.

9.7. In&Outinterface test Fig.23
-Theoperation statusofeachinputaction partcanbeconfirmed. If
thepartisoperating properly, “OK”isshown, excluding the
Expression Pedal. (referto Fig.23 )
-Whenakeyboard keyispressed, thecorresponding pitchand
velocityaftertouchisdisplayed(onlyas long as thekeyis
depressed).
-Therespectivestatuses for otherinputaction parts aredisplayed.
(Analog parts areshownas numerical values from 0to255, and
switches areshownas ONor OFF.)
-Ifthedisplayfailstochangewhenthepartisoperated, or ifthe
changeisabnormal, itmayindicate adefectivepart.
9.8. MIDI IN/OUTtest Fig.24
-First, set theCOMPUTERterminal switchtoMIDI.
-Use aMIDI cabletodirectlyconnect theMIDI INand MIDI OUT
terminals.
-Whenakeyboard keyispressed, thetransmittedand receiveddata

arecomparedand theMIDI terminal operation isindicatedas
being OKor NG. (referto Fig.24 )
-IfNG isshown, check boththeINand OUTterminals, as well as
thecircuit.
9.9. WAVE ROMtest Fig.25
-Press theEXECUTE button tostartthetest.
-Thetest result(OKor NG)isdisplayedwithinthirtyseconds. Ifthe
test resultisNG, notonlytherespectiveIC, butalsoabreak or
shortcircuitintheADDRESS/DATABUS as well as inanyofthe
strobesignal lines maybethecauseofthefailure. (referto Fig.25 )
9.10. SOUND SYSTEMtest Fig.26
-Use thebutton intheSOUND GROUP toselect anitemfrom 1to6
(referto Fig.26 and Fig.27 ). Press akeyboard key.
Fig.27