FUTABA 3PRKA User manual

Thank you for purchasing a Futaba FHSS 3PRKA 2.4GHz system.
This system is based on the combination of the newly developed 2.4GHz transmitter and
its corresponding receiver. Before using your 3PRKA 2.4GHz system, read this manual
carefully and use your R/C set safely.
After reading this manual, store it in a safe place.
FHSS 3PRKA 2.4GHz system
•2.4GHzSS(SpreadSpectrum)radiocommunicationsystem
•Frequencychannelsettingunnecessary:Siftingthechannelswithinthe2.4GHzbandautomatically,this
system minimizes the interference from other 2.4GHz systems.
•AcceptsnounwantedsignalsbyusingIDcode
•Built-inantenna(T3PRKA-2.4Gtransmitter)
•FHSS(FrequencyHoppingSpreadSpectrum)minimizesinterferencefromother2.4GHzsystems.This
system is not compatible with FASST.
Application, Export, and Modication
1.Thisproductmaybeused for modelsonly.Itisnotintendedforuseinanyapplicationother than the
control of models for hobby and recreational purposes.
2.Exportationprecautions:
(a)Whenthisproductisexportedfromthecountryofmanufacture,itsuseistobeapprovedbythelaws
governingthecountry ofdestinationwhich governdevicesthat emit radiofrequencies. If thisproduct is
thenre-exportedtoothercountries,itmaybesubjecttorestrictionsonsuchexport.Priorapprovalofthe
appropriategovernmentauthoritiesmayberequired.Ifyouhavepurchasedthisproductfromanexporter
outside your country, and not the authorized Futaba distributor in your country, please contact the seller
immediately to determine if such export regulations have been met.
(b)UseofthisproductwithotherthanmodelsmayberestrictedbyExportandTradeControlRegulations,
and an application for export approval must be submitted.
3.Modification,adjustment,andreplacementofparts:Futabaisnotresponsibleforunauthorized
modification,adjustment,andreplacementofpartsonthisproduct.Anysuchchangesmayvoidthe
warranty.
Compliance Information Statement (for U.S.A.)
This device, trade name Futaba Corporation of America, model number R203GF, complies with part 15 of
theFCCRules.Operationissubjecttothefollowingtwoconditions:
(1)Thisdevicemaynotcauseharmfulinterference,and
(2) This device must accept any interference received, including interference that may cause undesired
operation.
Theresponsiblepartyofthisdevicecomplianceis:
3002NApolloDriveSuite1,Champaign,IL61822U.S.A.
TEL[phone]orE-mail:[email protected](Support)
TEL[phone]orE-mail:[email protected](Service)
Battery Recycling (for U.S.A.)
The RBRCTM SEAL on the (easily removable) nickel-cadmium battery contained in Futaba
products indicates that Futaba Corporation of America is voluntarily participating in an
industry program to collect and recycle these batteries at the end of their useful lives, when
taken out of service within the United States.The RBRCTM program provides a convenient
alternative to placing used nickel-cadmium batteries into the trash or municipal waste system, which is
illegal in some areas.
You may contact your local recycling center for information on where to return the spent battery. Please
call1-800-8-BATTERYforinformationonNi-Cdbatteryrecyclinginyourarea.FutabaCorporation
of America's involvement in this program is part of its commitment to protecting our environment and
conserving natural resources.
RBRCTM is a trademark of the Rechargeable Battery Recycling Corporation.

3
Safety Precautions ............................. 4
Definition of Symbols ............................................................ 4
2.4GHz System Precautions ................................................. 4
Operation Precautions .......................................................... 5
Storage and Disposal Safety Precautions ........................... 6
Other Safety Precautions ...................................................... 7
Before Operation ................................ 8
System Contents .................................................................... 8
Nomenclature / Handling ....................................................... 9
Assembly / Adjustment ..................... 12
Receiver and Servo Connection ......................................... 12
Receiver Antenna Installation ............................................. 12
Assembly Precautions ........................................................ 13
How to Link Transmitter and Receiver ............................... 14
How to Open Front Cover .................................................... 14
Transmitter Set-Up Procedures .......................................... 15
3PRKA-2.4G Functions ..................... 16
Steering Trim ....................................................................... 16
Throttle Trim ........................................................................ 16
Steering Dual Rates (D/R) .................................................. 17
Steering Servo Reversing .................................................. 17
Throttle Servo Reversing ................................................... 17
Throttle End Point Adjustment (EPA-CH2) ........................ 18
CH3 Function ........................................................................ 18
Fail Safe Function (F/S) ....................................................... 18
MC230CR/MC330CR ............................................................ 19
Reference .......................................... 20
Ratings .................................................................................. 20
Troubleshooting ................................................................... 21
Error Displays ...................................................................... 22
When Requesting Repair .................................................... 22
Table of Contens
Warning: This product contains a chemical known to cause cancer and birth defects (or
other reproductive harm).
•Nopartofthismanualmaybereproducedinanyformwithoutpriorpermission.
•Thecontentsofthismanualaresubjecttochangewithoutpriornotice.
•This manual has been carefully written. Please write to Futaba if you feel that any corrections or
claricationsshouldbemade.
•Futabaisnotresponsiblefortheuseofthisproduct.
Safety
Precautions
Before
Operation
Assembly /
Adjustment
3PRKA-2.4G
Functions
Reference

4Safety Precautions
Safety Precautions
2.4GHz System Precautions
󾻨WARNING
󾾛Donotcover/holdthebuilt-in antennapartofT3PRKA-2.4Gtransmitter byyourhand
duringrunning.Donotputanyconductiveplate/stickerontheantennapart.
Otherwise,theoperatingrangemaybecomeshorter.
󾾛Donotperformthelinkingprocedurewhilemotor'smainwireisconnectedortheengineis
operatingasitmayresultinseriousinjury.
󾻪Whilethelinkingisdone,pleasecyclereceiverpowerandcheckifthereceivertobelinked
isreallyunderthecontrolbythetransmittertobelinked.
󾻪AlwaysuseR203GF4.8V~7.4VrechargeablebatteryorregulatedoutputfromESC.
Usingdrycellbatteriesmaycausethesystemtomalfunction.
WhenusinganESC,besurethattheregulatedoutputcapacitymeetsyourusagecondi-
tion.
󾻪Inordertomaintaincompletecontrolofyourcar/boatitisimportantthatitremainsvisible
at all times. Running behind large objects is not suggested. Doing so may result in the
reductionofthequalityoftheradiofrequencylinktothemodel.
For your safety as well as that of others, please read this manual thoroughly prior to
installation and operation of your digital proportional R/C system.
Denition of Symbols
Thefollowingdenesthesymbolsusedinthismanual.
Explanation of Symbols
󾻨DANGER Procedureswhichmayleadtoadangerousconditionandcausedeathor
seriousinjurytotheuserifnotcarriedoutproperly.
󾻨WARNING
Procedureswhichmayleadtoadangerousconditionorcausedeathor
seriousinjurytotheuserifnotcarriedoutproperly,orprocedureswhere
theprobabilityofsupercialinjuryorphysicaldamageishigh.
󾻨CAUTION Procedureswherethepossibilityofseriousinjurytotheuserissmall,but
thereisadangerofinjury,orphysicaldamage,ifnotcarriedoutproperly.
Explanation of Graphic Symbols
󾻨Indicatesanoperationthatpromptsawarning(includingCaution).
󾾛Indicatesanoperationthatmustnotbeperformed.
󾻪Indicatesanoperationthatalwaysmustbeperformed.

5
Safety Precautions
Operation Precautions
󾻨WARNING
󾻪When using a Ni-Cd/Ni-MH battery to power your system, always charge and check the
batteryvoltagepriortooperation.Shouldthebatterydischargebelowtheminimumvoltage
level,controlwillbelost.
󾻪Prior to operationalwaysperform a rangetest. Evenone abnormality in the R/Csystem
maycauselossofcontrol.
[Range Test Procedure]
Haveafriendholdthemodel,orplaceonastandwherethewheelsorpropcannotcome
incontactwithanyobject.Operatefromadistanceofabout100feet.Besuretocheckthe
movementofeachservotomakesureitfollowsthemovementofthesteeringwheeland
throttletrigger.Iftheservosdonotfollowthecommandsfromthetransmitteroranytypeof
interferenceisdetected,Donotoperatethemodel.
󾾛Neveroperateintherainorrunthroughpuddles.
The transmitter, receiver, batteries and most servos, and speed controls are not water-
proof.Contactwithanytypeofmoistureorimmersioninwaterorsnowwillcausedamage
along with possible loss of control. Should any type of moisture enter any component of
thesystem,immediatelystopusingtheR/Csystemandreturnittoourservicecenterfor
inspection.
󾾛Donotoperatewhenvisibilityislimited.
Shouldyoulosesightofthemodel,acollisionorotherdangeroussituationmayoccur.

󾾛Donotoperatenearpeopleorroads.
Donotoperateonanypondwhenboatsarepresent.
Donotoperatenearhightensionpowerlinesorcommunicationbroadcastingantennas.
Priortotheoperationofanymodelbesuretheareayouplantouseissafe.Beawareofall
objectsthatmaybeinthepathofyourmodel.Donotoperatethemodelwherepeopleor
anytypeofmoveableobjectcouldstrayinthepathofyourmodel.Controllossduetointer-
ference,componentfailure,lossofsightorlowbatteryvoltagecouldresultinseriousinjury
toyourselfandothersaswellasdamagetoyourmodel.
󾾛Do not operate when you are tired, not feeling well or under the inuence of alcohol or
drugs.
Yourjudgmentisimpairedandcouldresultinadangeroussituationthatmaycauseserious
injurytoyourselfandothers.
󾻪(Turning on the power switches)
Alwayscheckthethrottletriggeronthetransmittertobesureitisattheneutralposition.
1.Turnonthetransmitterpowerswitch.
2.Turnonthereceiverorspeedcontrolpowerswitch.
(Turning off the power switches)
Alwaysbesuretheengineisnotrunningorthemotorisstopped.
1.Turnoffthereceiverorspeedcontrolpowerswitch.
2.Thenturnoffthetransmitterpowerswitch.
Ifthepowerswitchesareturnedoffintheoppositeorderthemodelmayunexpectedlyrun
outofcontrolandcauseaverydangeroussituation.

6Safety Precautions
󾻪Makeall adjustments to theradio controlsystem with enginenot running,or the electric
motordisconnected.
Iftheengineisrunningorthemotorisconnectedwhileadjustmentsaremade,themodel
mayrunoutofcontrol.
󾻪Removethe mainbattery source fromelectricpoweredmodels whentheyare not being
used.
Shouldyouaccidentallyleavethereceiverswitchon,themodelcouldrunoutofcontrol.
󾻪(Fail safe function)
Beforerunning(cruising),checkthefailsafefunction.
Check Method:
Beforestartingtheengine,checkthefailsafefunctionasfollows:
1.Turnonthetransmitterandreceiverpowerswitches.
2.Turnoffthetransmitterpowerswitch.
3.Checkifthefailsafefunctionmovestheservostothepresetpositionwhenreceptionfails.
Thefailsafefunctionisasafetyfeaturethatminimizessetdamagebymovingtheservos
toapresetpositionwhenreceptionfails.However,ifsettoadangerousposition,ithasthe
oppositeeffect.
Setting example:Throttleidleorbrakeposition
󾻨CAUTION
󾾛Donottouchtheengine,motor,speedcontroloranypartofthemodelthatwillgenerate
heatwhilerunning.
Touchinghotpartswillresultinseriousburns.
󾻪Whenthechargerisnot inuse,disconnectitfromtheoutlet.Thiswill preventaccidents,
overheatingandshortcircuits.
Storage and Disposal Safety Precautions
󾻨WARNING
󾻪Attheendofaday'soperation,storethesystemwithNi-Cd/Ni-MHbatterydischarged.Be
suretorechargethesystembeforeitisusedagain.
Youshouldfullydischargeyoursystem'sbatteriesperiodicallytopreventaconditioncalled
"memory".Forexample,if youonly maketworunsin adayoryouregularlyuse asmall
amountofbattery'scapacity,thememoryeffectcanreducetheactualcapacityevenifthe
batteryischargedfortherecommendedamountoftime.

󾾛DonotthrowaNi-Cd/Ni-MHbatteryintoare.Donotdisassembleorattempttorepaira
Ni-Cd/Ni-MHbatterypack.
Overheating,damageandacidleakagemayleadtoburns,lossofeyesightaswellasnu-
merousothertypes ofinjuries.Theelectrolytein Ni-Cd/Ni-MHbatteries isastrong alkali.
Shouldyougeteventhesmallestamountoftheelectrolyteinyoureyes,DoNotrub.Wash
immediately with water, and seek medical attention at once.The electrolyte can cause
blindness.Ifelectrolytecomesincontactwithyourskinorclothes,washwithwaterimmedi-
ately.

7
Safety Precautions
Other Safety Precautions
󾻨CAUTION
󾻪Whenoperatingtwoormoremodelsatthesametime,haveathirdpersonactasaspotter.
Theywillbeinchargeofsafetyandyoushouldfollowtheirinstructions.
󾻪Beginnersshouldreceiveinstructionsregardingsafetyandoperationfromanexperienced
modeler.
󾻪Alwaysuseonlygenuine Futabatransmitter, receivers, servos,andelectronicspeed
controls,alongwithotheroptionalpartsandcomponents.
Futaba will not be held responsible for damages caused by other than genuine Futaba
parts and components. Use only genuine Futaba parts and components listed in the in-
structionmanualandcatalog.
󾾛DonotshortcircuittheNi-Cd/Ni-MHbatteryterminals.
Short circuiting the terminals will lead to sparks and overheating and could cause a re
andburnsaswell.
󾾛Donotexposeplasticpartstofuel,motorspray,wasteoilorexhaust.
Thefuel,motorspray,wasteoilandexhaustwillpenetrateanddamagetheplastic.
<Ni-Cd/Ni-MH Battery Electrolyte>
TheelectrolyteinNi-Cd/Ni-MHbatteriesisastrongalkali.Shouldyougeteventhesmallestamountofthe
electrolyteinyoureyes,DONOTRUB.Washimmediatelywithwaterandseekmedicalattentionatonce.
Theelectrolytecancauseblindness.Ifelectrolytecomesincontact with your skinorclothes,washwith
water immediately.
󾾛Donotleavetheradiosystemormodelswithinthereachofsmallchildren.
Asmallchildmayaccidentallyoperatethesystem.Thiscouldcauseadangeroussituation
and injuries. Ni-Cd/Ni-MH batteries can be very dangerous when mishandled and cause
chemicaldamage.
󾻨CAUTION
󾾛DonotstoreyourR/Csystemwhereitwillbeexposedtothefollowingconditions.
•Extremeheatorcoldness
•Exposedtodirectsunlight
•Wherehumidityishigh
•Wherevibrationisprevalent
•Wheredustisprevalent
•Wherethereissteamandcondensation
StoringyourR/Csystemunderadverseconditionscouldcausedeformationandnumerous
otherproblemswithoperation.
󾻪Ifthesystemwillnotbeusedforalongperiodoftime,removethebatteriesfromthemodel
andstoreinacool,dryplace.
Ifthebatteriesareleftinthemodel,electrolytemayleakanddamagethemodel.
<Ni-Cd/Ni-MH Battery Recycling>
AusedNi-Cd/Ni-MHbatteryisvaluableresource.Insulatethebatteryterminalsanddisposeofthebattery
by taking it to a battery recycling center.

8Before Operation
Before Operation
System Contents
After opening the container, check the contents for the following items. The contents will
vary with the system purchased.
3PRKA-2.4GHz System Contents
Transmitter T3PRKA-2.4G (x1)
Receiver R203GF (x1)
Servo ----- S3003 (x2) S3003 (x1) S3050 (x1)
E.S.C. ----- ----- MC230CR or
MC330CR (x1) MC330CR (x1)
Switch SSW-GS (x1) ----- -----
Miscellaneous MiniScrewdriver
*Servomountinghardwareandservohorns(onlyw/servoset)
Receiver R203GF Servo S3003/S3050
Connectors
"3":CH3Servo
"2":ThrottleServo(CH2)
"1":SteeringServo(CH1)
"B":Powerconnector
Link Switch LED
Servo Horn
Mounting
Flange
NOTE:FutabaFHSSsystem,T3PRKA-2.4GtransmitterandR203GFreceiver,
doesnot workwith current FutabaFASSTsystems.Please useT3PRKA-2.4Gand
R203GFinpairs.FutabaFASSTsystemandFHSSsystemarenotcompatibleeach
other.

9
Before Operation
POWER
Transmitter T3PRKA-2.4G
Nomenclature / Handling
󾻨WARNING
󾾛Donotcover/holdthebuilt-in antennapart
ofT3PRKA-2.4Gtransmitterbyyourhand
duringrunning.
Donotputanyconductiveplate/stickeronthe
antennapart.
Otherwise,theoperatingrangemaybecome
shorter.
󾻨WARNING
󾻪Aswithallradiofrequency
transmissions,thestrongestareaof
signaltransmission isfromthesides
oftheantenna(built-in).Assuch,the
antenna(arrow direction) should not be
pointeddirectlyatthemodel.
Grip Handle
CH3 Switch
Throttle Trigger
Steering Dual Rate Dial (D/R)
Antenna (Built-in)
Throttle Servo
Reversing Switch
Steering Servo
Reversing Switch
Steering Wheel
Power Switch
Whenslidupward,
thepoweristurnedon.
LED Light
ItblinksatLowBattery.
Controlthespeedofthemodelandmovement
forwardandbackward.
Adjustthesteeringsensitivityacross
theentirerange.
Theantennaisinsidethispart.
Steering Trim
Adjuststhesteeringinsmallincrementsso
themodelwillrunstraight.
Throttle Trim
Adjuststhethrottleinsmallincrementssothe
modelwillnotmoveatneutral.
Front cover
Openthecoverbyslidingitleftuntilyou
heara"click".Thenopenittothisside.
Throttle End Point
Adjustment (EPA-CH2)
Thisfunction isusedto adjustthe
forwardandbrakesideservotravel.
Turnmodeltoleftorright.

10 Before Operation
Battery Replacement Method
(4 AA size batteries)
1Removethebatterycoverfrom the transmitter by sliding it in the
directionofthearrowinthegure.
2Removetheusedbatteries.
3Loadthenew AAsize batteries. Payverycloseattentiontothe
polaritymarkingsandreinsert
accordingly.
4Slide the battery cover back onto thecase.
󾻨CAUTION
󾻪Alwaysbesureyoureinsertthe
batteriesinthecorrectpolarityorder.
Ifthebatteriesareloadedincorrectly,the
transmittermaybedamaged.
󾻪When the transmitter will not be used
foranyshortorlongperiodoftime,
alwaysremovethebatteries.
Ifthebatteriesdohappentoleak,clean
thebatterycaseandcontactsthorough-
ly. Make surethecontactsarefreeof
corrosion.
Check:
Turn the power switch on the transmitter
to the ON position. Check the battery
voltagedisplayontheLEDlight.
Ifthe voltageislow,checkthebatteries
for insufficient contact in the case or
incorrect battery polarity.
Low Battery :
WhentheLEDstartsblinking,changethe
batteries immediately.
POWER
The low battery alarm is meant to be a
safetyfeatureonly.DoNOToperateyour
radio below low battery. Always shut your
radio off as soon as possible after the low
battery warning loss of control.

11
Before Operation
E.S.C. MC230CR / MC330CR
Motor connector
Connects to the motor.
(Orange) is positive. (Blue) is negative.
If the motor rotates in the wrong
direction, interchange the connections of
this connector.
Ni-Cd/Ni-MH battery connector
Connects to the running Ni-Cd/Ni-MH battery.
(Red) is positive. (Black) is negative.
Receiver connector
Connects to the receiver throttle channel.
Miniature screwdriver
Accessory. Use to press the
pushbutton switch.
Checker LED
Power switch
Pushbutton
switch
MC230CR/MC330CR
(Orange)
(Blue)
(Black)
(Red)
Applicable motors (Number of turns is criteria.)
•Use the MC230CR with a motor with 20T or more turns.
•Use the MC330CR with a motor with 13T or more turns.
*If a motor with a number of turns smaller than the above is used, the heat
protector and overcurrent protection circuit may operate. The number of turns
of the motor is only one criteria. Depending on the running conditions, the
protection circuit may operate even if the condition above is satisfied.
Ni-Cd/Ni-MHbattery 6~7 cells (7.2~8.4V)

12 Assembly / Adjustment
Assembly / Adjustment
Receiver and Servo Connection
As you connect the receiver, servos and other components, do so in accordance with the
"Assembly Precautions".
Connections when a E.S.C. MC230CR or MC330CR are used.
Steering Servo
Throttle Servo
Receiver
Receiver
Power Switch
To Receiver
Battery
Steering Servo
E.S.C.
Power Switch
Connects to Motor
Connects to Battery
Gas Powered Model
Receiver Antenna Installation
InstalltheR203GFreceiveronthecarasfollows:
Note: The operating range may become shorter, depending on where the
receiver and the antenna are mounted.
󾻨WARNING
󾻪Installtheantennainthehigherplaceasshowninthegure.
Keepthe antenna asfaraway from themotor,ESC and other
noisesourcesaspossible.
Puttheantennaintheantennatubetoprotectit.
󾾛Donotcuttheantenna.
Donotbendthecoaxialcable.Doingsocausesdamage.
Antenna
tube
Antenna
Coaxial
cable
R203GF

13
Assembly / Adjustment
Assembly Precautions
󾻨WARNING
󾻪Checkthereceiver,servos,andbatteryconnectors,tobesuretheyarermlyconnected.
Ifaconnectorisnotfullyinserted,vibrationmaycausetheconnectortoworkloosewhile
themodelisoperating.Thiswillresultinlossofcontrol.
󾻪Operateeachservohornoveritsfullstrokeandchecktoseethatthelinkagedoesnotbind
orisnottooloose.
Excessiveforceappliedtotheservohornbybindingorpoorinstallationmayleadtoservo
problemsandresultinlossofcontrol.
󾻪(Electric Cars and Boats)
Isolatethereceiverfromvibrationbyattachingtothechassisormountingplatewiththick
doublesidedtape.
(Gas Powered Cars and Boats)
Isolatethereceiverfromvibrationbywrappingitinfoamrubberorsimilartypecushioning
material.Protecttheunitfromwaterdamagebyplacingitinaplasticbagorwaterproofra-
diobox.
Thereceivercontainsprecisionelectronicparts.Thesepartsarevulnerabletovibrationand
shock.Anycontactwithmoisture(waterorcondensation)maycausereceivermalfunction
andlossofcontrol.
󾻪Usetheservohornscrew.
Whentheservohorncomesoff,itbecomeslossofcontrol.
󾻪Keep all devices that emit high frequency noise, such as motors, batteries, and  wiring
thathandlesheavycurrentloads,atleast1/2inchawayfromthereceiverandthereceiver
antenna.
High frequency noise will cause a decrease in operating range and could cause loss of
control.
󾻪Installelectronicspeedcontrolheatsinksaswellasothercomponentsthatconduct
electricitysotheycannotcomeincontactwithaluminum,carbonberorothermaterials
thatconductelectricity.
If,forexample,thespeedcontrolcameloosewhilethemodelwasrunningandtouchedan
aluminumchassis,a short circuitmayoccur thatwould causeirreparabledamageto the
systemaswellaslossofcontrol.
󾻪Noisesuppressioncapacitorsshouldbeinstalledonalmostallmotors.
Ifthepropercapacitorsarenotinstalled,highfrequencynoisewillreducerangeandcause
lossofcontrolalongwithvariousotherproblems.
󾻪Inspectalllinkageinstallationsandanypointwheremetalcouldcomeincontactwithother
metalparts.Makesurethesepartsdonottouchothermetalpartsundervibration.
Shouldalinkageorothermetalpartscomeincontactwithothermetalpartsundervibra-
tion,the high frequencynoise generatedbythis contact willcause interferenceand pos-
siblelossofcontrol.
󾻨CAUTION
󾾛DoNotdisassembleanypartofthissystemthatisnotspeciedintheinstructionmanual.
Futabawillnotberesponsibleforanydamageduetoimproperdisassemblyofanypartof
theradiocontrolsystem.

14 Assembly / Adjustment
How to link the transmitter and the receiver
Eachtransmitterhasanindividuallyassigned,uniqueIDcode.Inordertostartoperation,
the receiver must be linked with the ID code of the transmitter with which it is being
paired.Oncethelinkismade,theIDcodeisstoredinthereceiverandnofurtherlinking
isnecessaryunlessthereceiverneedstobeusedwithanothertransmitter.(ForT/Rset,
thelinkisalreadydoneatfactory.)
Link procedure
1Bring the transmitter and the receiver close toeachother,within0.5meter.
2Turnonthetransmitterandthereceiver.
Link Switch LED
3PushandholdtheLinkSwitchofthe receiver.
4When the link is complete, the LED in the receiverchangestosolidgreen.
*PleasereferthetablebelowforLEDstatusvsreceiver'scondition.
LED status vs receiver's condition:
Nosignalreception OFF
Receivingsignals On
Receivingsignals,butIDisunmatched. Blink
Receivingsignals,whenF/Sisset. It is turns on and a fast blink for the first one
second.
How to open front cover
Theswitchandthetrimmerwhichadjustsitareinthefront
cover.
Open the cover by sliding it to the left until you hear a
"click". Then open it to side. 󾾛Donotforcethecover
toopen90°ormore.
'Click'

15
Assembly / Adjustment
Transmitter Set-Up Procedures
*Whenmakingthesesettingsadjustments,dosowiththemotordisconnectedor
the engine not running.
NEUTRAL, HIGH, AND BRAKE MAX POINT SETTINGS
Before setting each point, set the transmitter throttle channel trim to neutral.
Turn on the power in transmitter -> amp order.
1
2
Transmitter throttle operation
･Neutral state ･Press the pushbutton switch.
(0.5 secs or longer)
(Confirmation beep sounds)
･Continuous single blink
MC230CR /MC330CR
(Pushbutton switch operation) (Checker LED)
N
N
Full High
Full brake
N
Neutral point
setting
3
･Full high state ･Press the pushbutton switch.
(Confirmation beep sounds)
･Continuous double blink
･Continuous rapid blink
High point
setting
4
･Full brake state ･Press the pushbutton switch.
(Confirmation beep sounds.)
･If the LED goes out,
setting is complete.
Brake MAX
point setting
* Since the data is read at the end of setting of all points, the points cannot be set independently.
* If the amp power was turned off during setting, the setting points cannot be memorized. (The previous settings are retained.)
* The confirmation beep sounds only when the motor was connected.
If the LED does not go off
but blinks rapidly, setting
was not performed
normally. Repeat setting
from "Neutral point
setting".
*When using the another transmitter with ABS
function, after setting up the MC230CR /
MC330CR, stop the reverse function, then turn
on the ABS function. If the ABS function is on,
the MC231CR / MC331CR cannot be set up
correctly.
Set the steering angle adjustment function (E.P.A) to
100% using the transmitter throttle channel function.
Servo Horn Installation Instructions
1Connect the receiver, servos, and other components and thenturnonthepowerswitchestotransmitterandreceiver.
*Both servos will move to the neutral position.
2Atthistimeinstalltheservohorninthemannerdescribedin theinstructionmanualprovidedwiththemodelthissystem
willbeusedin.
Reversing The Servo Operation Direction
Shouldtheservooperateintheopposite direction required for your application,reverse
thedirectionwiththeservoreversing.
E.S.C. MC230CR / MC330CR
POWER
Throttle Servo
Reversing
Steering Servo Reversing
Nor:Normal
Rev:Reverse

16 3PRKA Functions
3PRKA-2.4G Functions
Steering Trim
Throttleneutraladjustmentscanbemade
moving the throttle trim to the left or right.
Racers Tip
Whenusinganelectronicspeedcontrol,setthethrottle
trimtoneutralandmakeadjustmentstothespeed
control. On a gas powered model, set the trim to
neutral and adjust the linkage to the point where the
carburetor is fully closed in accordance with the engine
instruction manual.
Trim Operation and Travel
Trim adjustments will affect the overall servo travel.
Checkthebrakeside(backward)movementwhen
changes are made.
When trim movement is extreme
Ifyouusemostofthetrimmovementtogettheservo
to the neutral position , recenter the servo horn closer
to the neutral position and inspect your throttle linkage.
Throttle Trim
Steeringneutraladjustmentscanbemadeby
moving the Steering trim knob to the left or right.
Racers Tip
When you install a servo, always check to be sure the
servoisatitsneutralposition.Adjusttheservohorn
hole position and linkage so both are parallel.When a
servo saver is used, place it as close to center position as
possible. Be sure the steering trim on the transmitter is at
the neutral position.
Trim Operation And Maximum Travel
Changingthetrimcan affecttheoverallsettings.When
adjustmentsaremadewiththetrims,recheckyour
installationformaximumtravel.(SteeringD/R).
When Trim usage is extreme
Ifittakesmostofyourtrimmovementtogetaservo
to the neutral position, reposition the servo horn or
servo saver on the servo and inspect your linkage
installation.
(Drum Type)
(Slide Type)
Carburetor Fully Closed
POWER
Steering Trim
90°
90°
Parallel
Servo Saver
Direct Servo Saver Horn
POWER
Throttle Trim

17
3PRKA Functions
Usethisfunctiontoadjustthesteeringtravelofyour
model.Ifthemodelundersteerswhilecornering,add
steeringbyturningCWoftheD/Rbutton.When
the model oversteers, take away steering by turning
CCWoftheD/Rbutton.
This function reverses the
rotation direction of the
Steering servo.
Whenthetrimpositiondeviatesfrom
the center, the deviation will be on the
opposite side when the servo is reversed.
Throttle Servo Reversing (REV-CH2)
This function reverses the rotation direction
of the throttle servo.
Whenthetrimpositiondeviatesfrom
the center, the deviation will be on the
opposite side when the servo is reversed.
󾻨WARNING
󾻪Besure thatthe steeringlinkage doesnot bind orcome incontact with anysuspension
partsor arms.Ifunreasonableforceisapplied tothe servo,the servomaybedamaged
andresultinlossofcontrol.
Steering Dual Rates
Steering Servo Reversing
Throttle Servo Reversing
POWER
Steering Dual Rates
POWER
Steering Servo Reverse
Nor: Normal
Rev: Reverse
POWER
Throttle Servo Reverse
Nor: Normal
Rev: Reverse

18 3PRKA Functions
󾻨WARNING
󾻪Besurethatyourthrottlelinkagedoesnotapplyexcessiveforcetotheservo.
If your linkage installation causes an unreasonable amount of force to be
appliedtotheservo,theservomaybedamagedandresultinlossofcontrol.
Throttle End Point Adjustment(EPA)
CH3 Function
Fail Safe Function (F/S)
POWER
Thrittle EPA
Hight: Forward side
Low: Brake side
WhenESCisusedwith
an electric car, two EPA
trimmers are right fully
turned beforehand.
CH3 cannot operate EPA function and servo linearly.
Foranelectriccar(E.C.Suse),
link the transmitter and the
receiver at neutral position.
For the engine car,
link the transmitter and the
receiver at braking position.
POWER
CH3 Switch
One other Channel can be used besides the steering wheel and
the throttle operation. Right and left operation of two actions
can be done by using the servo.
ON-OFFtheheadlightetc.canbeoperatedbyusing"CPS-1"
(soldseparately).
This function moves the throttle
servo to a preset position when the
receiver cannot receive the signal
from the transmitter for some
reason.
Whenthesignalfromthe
transmitter can be received again,
this function automatically resets.
The throttle position at the link
operationismemorized.(P.14)
This function is used to adjust the forward and brake side
servotravel.Eachdirectioncanbeadjustedindependentof
eachother.Usethisfeaturetosetthethrottleservotravel.
＜OneexampleusingCPS-1 ＞
ON
R203GF
※ＬＥＤFastblinkTurningoff
ᾢᾦ
While pressing
the link button switch, set the power switch to ON.
(Link switch operation) (Receiver Power switch)
Release of
Fail Safe
Function
ᴾ

19
3PRKA Functions
MC230CR/MC330CR
BRAKE/REVERSE OPERATING INSTRUCTIONS
Operation can be switched to reverse operation by returning the throttle trigger (or throttle stick) from the brake
position to the neutral position.
CANCELLING THE REVERSE FUNCTION
The amp reverse function can be cancelled by the following method so that the model can be used even in races
that prohibit reverse running. (Brake operation only)
While pressing
the pushbutton switch, set the power switch to ON.
ON
MC230CR / MC330CR
(Pushbutton switch operation) (Power switch)
1
Reverse
function
cancellation
* When desired, you can enable the cancelled reverse
function by repeating the operation shown at the left.
(The reverse function is switched alternately.)
CHECKER LED DISPLAY
The amp operates linearly in proportion to the amount of forward, reverse, and brake operation. The amp operating
state can be checked with the checker LED as shown below.
PROTECTION CIRCUIT OPERATION
The following protection circuits are built into the MC230CR / MC330CR. When a protection circuit operates,
remove the cause before operating the model again.
Operation
Amp power ON
Checker LED display
(Reverse operation set)
Single blink
(Single confirmation beep)
(Only brake operation set)
Off
On
On
Off
Off
Double blink
(Two confirmation beeps)
Blinks. (Confirmation
beep also sounds.)
* Confirmation beep only sounds when the motor was connected.
High point
Neutral point
Brake MAX point
*Becomes brighter nearer the high
point.
*Becomes brighter nearer the
brake MAX point.
*Not used with PCM receivers.
*When the transmitter is OFF, this function is
not performed in environments such that the
servo operates erroneously.
When an overcurrent flows due to an output short circuit, etc., the overcurrent protection circuit automatically
limits the current to protect the FET.
Remove the cause of the short circuit, etc. before operating the model again.
(Amp power left on alarm)
When the transmitter power
was turned off first.
Forward
Reverse
/brake
Overcurrent
protection
When abnormal heating of the FET due to an overload, etc. is detected, the heat protector operates so that
the speed is gradually reduced.
When the FET temperature drops, the heat protector automatically resets. However, remove the cause
of the overheating before operating the model again.
Heat protector
When the Ni-Cd/Ni-MH battery voltage drops, this function limits the motor output current and ensures steering
operation.
After the speed drops, immediately recover the vehicle.
Low voltage
operation

20 Reference
Reference
Ratings
Communication method:
One-wayoperationsystem
Maximum operating range:
80m(Optimumcondition)
For safety:
F/S (Throttle), ID (About 4 billion ways of pair
identications)
Transmitter T3PRKA
(FHSSsystem,wheeltype,3channels)
Transmitting frequency:
2.4GHz band
Power requirement:
(Drycellbattery)Penlightx4(6V)
Current drain:
100mA or less
Transmission antenna:
1/2λdi-pole(Built-in)
Receiver R203GF:
(FHSS/S-FHSSsystem,3channels)
Power requirement:
4.8V～7.4VRechargeablebattery
Size:
26x39x10mm(excludingaprojectionpart)
Weight:
8g
Servo S3003
(Standardservo)
Power requirement:
6V(commonwithreceiver)
Current drain:
8mA(at6V/Idle)
Output torque:
4.1kg-cm(57in.-oz.)at6V
Operating speed:
0.19sec/60degreeat6V
Size:
40.4x19.8x36mm(1.59x0.78x1.42in.)
Weight:
37.2g(1.31oz.)
Servo S3050
(Standarddigitalservo)
Power requirement:
6V(commonwithreceiver)
Current drain:
8mA(at6V/Idle)
Output torque:
6.5kg-cm(90.3oz.-in.)at6V
Operating speed:
0.16sec/60degreeat6V
Size:
40.0x20.0x38.1mm(1.57x0.79x1.50in.)
Weight:
49g(1.72oz.)
E.S.C. MC230CR / MC330CR
(Electronicspeedcontrol)
Operating system:
Forward, reverse, and brake operations are all
linear.
Power requirement:
Ni-Cd/Ni-MHbattery6-7cells(7.2to8.4V)
PWM frequency:
1.5kHz(xed)
Setting:
One-touchinputbypushbuttonswitch.Setdatais
savedtobuilt-inEEPROM.
Current capacity (FET rating):
Forward=90A/200A,reverse=45A/100A
Size:
27.1x33.3x12.8mm(1.07x1.31x0.50in.)
(excludingprotrudingparts)
Silicon cord gauge size:
AWG16/AWG14equivalent
Weight:
44/45g(1.55/1.59oz.)
(includingconnectorsandswitches)
BEC voltage:
6.0V
*Specicationsandratingsaresubjecttochangewithoutpriornotice.
NOTE: Futaba FHSS system,T3PRKA transmitter and R203GF receiver, does
notworkwithcurrentFutabaFASSTsystem.PleaseuseT3PRKAandR203GFin
pairs.FutabaFASSTsystemandFHSSsystemarenotcompatibleeachother.

21
Reference
Ifyoursystemfailstooperateoryouexperienceashortrangeproblemorerraticcontrol,
check the table below for possible causes. If after you have followed the suggestions
listed the problem is not corrected, return the system to our service department for
inspection and repair.
(Item Check)
Troubleshooting
Transmitter
Battery
Deadbattery Changethebatteries.
Batteriesinsertedincorrectly. Reloadthebatteriesinaccordancewiththe
polaritymarkings
Faultycontact Checktoseeifthecontactsarebentandnotmakinggood
contact
Dirtycontacts Cleanthecontactsandcheckforcorrosion.
Receiver
Battery
Deadbattery Replaceorrecharge
Wrongpolarity Checkconnections
Antenna
Nearotherwiring Moveawayfromwiring
Wasantennacut Requestrepair
Istheantennainstalledcorrectly Refertothereceiverinstallation.
Monitor LED
ChecktheLEDofthereceiver.
Refertothe"Howtolinkthetransmitterandthereceiver".
Connector connections
Wiringincorrect Insertallconnectorsrmly
Looseconnections Pushtheconnectorinrmly
Linkage
Bindingorloose Adjustthelinkageinmodel
Ismovementstiff Adjustlinkageinmodel
Motor (Electric powered)
Noiseproblems Installcapacitorsonmotor