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CobyElectronicsCorp. 
56-65RustStreet 
Maspeth,NY11378
MPC751
USER'SMANUAL
DIGITALAUDIOPLAYERW/FMTUNER
www.cobyusa.com 
www.ecoby.com
Pleasereadmanualbeforeoperation
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Contents
Contents
GettingStarted
Features....................................................................................
Accessories..............................................................................
SafetyInstructions....................................................................
InstallingabatteryandSD/MMCCard................................
LocationofControls................................................................
LCDDisplay..............................................................................
MENUTable..............................................................................
ConnectiontoComputer
USBDriverInstallation.............................................................
ConnectingtheplayertoPC...............................................
Downloading/Uploadingfiles..............................................
Disconnectingtheplayer......................................................
BasicOperations
PowerOn/Off.........................................................................
EnteringtheMenu..................................................................
SearchingforMusic/VoiceFiles...........................................
MusicPlayback......................................................................
TunerOperation....................................................................
Recording...............................................................................
2
10
11 
12 
13 
13
14 
15 
16 
17 
18 
19
AdvanceSetup
4 
5 
6 
7 
8 
9
Systemsetup...........................................................................
Play/RepeatMode...............................................................
LoopA-BRepeat/Resume..................................................
Delete/Format.........................................................................
Format.....................................................................................
21 
22 
23 
24 
25
CustomerSupport
F/WUpgrade.........................................................................
Troubleshooting.....................................................................
Specifications........................................................................
2
26 
27 
30
3
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Features
512MBBuilt-inFlashMemory
MP3andWMAPlayback
FMtuner
Accessory
RemovableStorageDevice(music,data,pictures,etc.)
PlugandPlay(Noinstallationsoftwarerequirefor 
Window2000/WindowME/WindowXP)
VoiceandFMRecordingupto18Hours
DisplaysSongTitle,AlbumandArtist
UpgradableFirmware(Youcanupgradethefirmware 
whenitbecomesavailable.Pleasecheck 
www.cobyusa.comforupgrades.)
4
2
MP3PlayerUser'sManual
Earphonew/NeckstrapUSBCable
InstallationCD
2
1xAAABattery
5
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SafetyInstructions
1.Donotexposetheunittohightemperatureorhumidity.
2.Donotsubjecttheunittosevereimpact,orplaceheavy 
objectsonit.
3.Donotusestrongdetergentorsolventtocleantheunit.
4.Removebatterywhenthedeviceisleftunusedfora 
longperiodoftime.
5.Donottrytodisassembleandrepairthedeviceyourself.
6.Donotexposetodirectsunlightorheatsources.
7.Donotstoreindustyareas.
WARNING:Handlingthecordsonthisproductwillexposeyou 
tolead,achemicalknowntotheStateofCaliforniatocause 
[cancer,and]birthdefectsorotherreproductiveharm.
Washhandsafterhandling.
Protectyourears:
Hearingexpertsadviseagainsttheconstantuseof 
personalstereoplayedathighvolume.Constanthigh 
volumeusecanleadtohearingloss.Ifyouexperience 
ringingintheearsorhearingloss,discontinueuse 
andseekmedicaladvice.
InstallingaBatteryandSD/MMCCard
InstallingBatteryandSD/MMCCard
1.Openthebatterycover.
2.InserttheAAAbattery. 
Makesuretomatchthe+and-endsofthebatterywith 
thediagraminsidethebatterycompartment.
3.InserttheSD/MMCCard.
(1)(2)(3)
Battery (included): 
Thisunitoperatesononealkalinebattery(AAAsize).
6
Note:ToreleasetheSD/MMCCard,justpressthecard,and
itwillspringbackout.
7
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LocationofControls
Phonejack
NeckStrap 
Hook
USBPort
LCDDisplay
VOLUME+
VOLUME-
MENU
REW
POWER 
ON/OFF 
/ENTER
Hold
LCD 
Display
PLAY/ 
PAUSE
F.FWD
STOP
Mic
REC/A-B 
Button
FileType
VoiceFile 
MusicFile
TotalTracks
FileFormat
WMA 
MP3
Sample
CurrentTrack
EQIndicator
020NORM 
044
MP3MUSIC
44
128
KHZ
KBPS
Bit 
Rate
01:16
Battery 
Indicator
Function 
Indicator
Elapsed 
Time
Frequency
512MB
ModelNo:MPC751
8
BatteryCompartmentand 
SD/MMCCardCompartment
9
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MENUTable
USBDriverInstallation
10
MENU
Music/Voice/Playlist/SD/MMCCard
NAV
MSC
(Music)
FM
(Tuner)
REC (Recording)
SYS
EQ- Normal,Classic,Live,Pop,Rock 
RepeatMode- Normal,One,All,Intro,Random 
Display- ID3Tag,Lyric,Contrast,B-lightTime, 
AutoOff- 30Sec,1Min,2Min,3Min 
Recording- 1.RECMode-Low,Middle,High
Resume-
DeleteFile-Music
FormatĀReset 
Information- 1.F/WVersion
2.VAD-On/Off
1.TrackOn(Off)
2.TimeLineOn(Off)
Voice
1.InternalM.
2.SD/MMCCard
2.InternalM.
3.SD/MMCCard
USBDriversoftwareInstallation:
IfyouareusingWindowsMe/2K/XPorMacX 
(version10.2.6orabove),noinstallationisrequired, 
justconnecttheplayertothecomputer.TheOSwillsetup 
andthentheremovablediskiconwillbeshownin 
"MyComputer"
IfyouareusingWindows98,youmustinstallthedriver.Setup 
willinstalltheupdateutilityandthedriveronyourcomputer.
1.InserttheInstallationCDintotheCD-ROMdrive.
2.ClicktoopenthediscD:(WhereD:\isyourCD-ROM 
drive)anddouble-click"Win98Driver.exe"torunthe 
program.
3.Thesetupdialoguewindowwillbedisplayedonthescreen.
4.Followtheinstructionsonthescreenuntilyoureach 
thesuggestiontorestartyourcomputernoworrestart 
itlater.
5.SelectoneoptionandthenclickFINISH.
(ForMacOSuser,it'llbeshownonthe"Desktop").
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ConnectingtoPC
Downloading/UploadingFiles
ConnectingtheplayertoPC:
1.Makesuretheplayeristurnedoff.
2.Connecttheplayertoyourcomputerwiththesupplied 
USBcable.
3.PCwillautomaticallydetecttheplayerasremovable 
diskunderMYCOMPUTER.
4.GotoMYCOMPUTERandconfirmtheconnection.
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Downloading/Uploadingfiles:
1.ConnecttheplayertoyourcomputerwiththeUSBcable.
2.OpenWindowsExplorer.
3.Selectthefilesthatyouwanttodownloadbyclickingonthe 
fileicon(ifyouwanttoselectmorethanonefile,pressand 
holdthe"Ctrl"or"Shift"keywhenyouareclicking.)
4.Right-clickonthefiles,andamenuappears.Click"Copy".
5.Double-click"RemovableDisk"toopenthedrive.The 
RemovableDiskwindowappears.
6.Right-clickintheRemovableDiskwindo,andclick"Paste".
7.Filetransferbegins.
Note: Donotremovetheplayerwhileit'stransferringfiles.
Itmightcorruptordamagethefirmwareand/orfiles 
ontheplayer.Iftheplayerisaccidentallyremoved 
whiletransferringanddoesnotworkproperly,remove 
thebatteryfor3secondsandreplaceit.
DisconnectingthePlayer:
Afterthefiletransfer,youmustsafelydisconnecttheplayer:
1.Double-clickthegreenarrowinthetaskbaronthe
bottomrightofthescreen.
2.Click"Stop".
3.Whenthe"StopaHardwaredevice"windowappears, 
click"OK".
4.Whenthe"SafetoRemoveHardware"messageappears, 
youcanremovetheplayersafely.
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PowerOn/Off
EnteringtheMenu
HoldFunction:
HoldOff:SlidetheHOLDswitchtotheoppositedirectionofthe
arrowtounlockandoperatetheplayer. 
HoldOn:SlidetheHOLDswitchtothedirectionofthearrowto 
disable(lock)allthefunctions.Thescreendisplays:
020NORM 
044
HOLD
44
128
KHZ
KBPS
01:16
TurningthePowerOnandOff:
PowerOn: Pressandholdthejoysticktoturnonthepower.
Thedisplayshows"COBY".
PowerOff: Pressandholdthejoysticktoturnoffthepower.
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Toenterthemainmenu,pressMENUbutton.
NAV
RECMSC SYSFM
Inthemainmenu,itwilldisplayNAV,MSC,FM,RECandSYS. 
RefertotheMENUTablefordetail(pg10).
Toexitthemenu,presstheMENUbutton
Note: Whileworkingwithmenu:
1.Usethejoysticktoselectanitem.
2.Pressthejoysticktoconfirm.
3.PresstheMENUbuttontoexitthemenu(orsub-menus).
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SearchingforMusic/Voice/PlaylistFiles
MusicPlayback
TosearchforafileusingtheNAVmenu
1.SelecttheNAVmenufromthemainmenu.
2.Pressthejoysticktoenter.
3.Selectthedesiredsub-menu:MUSIC,VOICE,PLAYLIST, 
SD/MMCCard 
MUSIC:MP3andWMAmusicfiles
VOICE:RecordedvoiceorFMfiles 
PLAYLIST:Playlistfiles 
SD/MMCCard:FilesontheSD/MMCcard(ifinserted).
4.Pressthejoystickupordown/toselectthedesired
folderorfile. 
Pressthejoysticktotheright(orpressthejoystick) 
toopenthefolder. 
Pressthejoysticktothelefttoexitthefolder. 
Pressthejoysticktoconfirmyourchoice.
Note:Thefilesin"PLAYLIST"willnotbeshownwhennavigating
toitthroughthe"MUSIC"sub-menu.Toviewthe 
filesin"PLAYLIST"usethe"PLAYLIST"sub-menu.
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PlayingMusicUsingtheMSCMenu
1.SelecttheMSCmenu.
2.Pressthejoysticktoenter.
3.Pressthejoystickuptoplaythecurrenttrack.
AdjustingTracksDuringPlayback
Pressthejoysticktotherighttoplaythenexttrack. 
Pressthejoysticktotheleftduringthefirstfivesecondsof 
thetracktoplaytheprevioustrack.Pressingthejoysticktothe 
leftafterthefirstfivesecondsofthetrackwillrestartthe 
currenttrack. 
Pressandholdthejoysticktotherighttofastforward. 
Pressandholdthejoysticktothelefttofastbackward.
AdjustingVolume
Pressvolumebuttontoadjustthevolume.
PausePlayback
1.Pressthejoystickuptopauseplayback.
Note: Ifnobuttonsarepressedwithinacertainamountoftime
(Autooffsetting)theplayerautomaticallypowersoff.
2.Pressthejoystickupagaintoresumeplayback.
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TunerOperation
Recording
ListeningtotheFMTuner
1.SelecttheFMmenu.
2.Pressthejoysticktoenter.
3.Pressthejoystickuptotogglebetweenmanualand 
presetmodes.Awillappearneartheupperrightcorner 
inpresetmode,wherexxisthepresetnumber.
CH
xx
ManualMode
1.Pressthejoysticktotheleftorrighttodecreaseor 
increasethefrequency.
2.Pressandholdthejoysticktotheleftorrightforone
secondtoseekthenextstation.
PresetMode
1.Pressthejoysticktotheleftorrighttodecreaseor 
increasethepresetchannel.
StoringStationsAutomatically
Pressandholdthejoystickdowntostarttheauto-search 
function.Theplayerwillscantheentirebandandsavelocated 
stationsintothetwentypresetmemorychannels,overwriting 
thepreviouslystoredchannels.
StoringStationsManually
1.Tunetothestationyouwishtostore.
2.Pressthejoystick,andwillappearandstartflashingnear 
theupperrightcorner.
3.Pressthejoysticktotheleftorrighttoselecta 
presetchannelnumber.
4.Pressthejoysticktostorethecurrentstation.
18
CH
01
VoiceRecording:
1.PresstheMENUbuttonwhileinMUSICorRECORDmode.
1.SelectRECmenufromthemainmenu.
2.Pressjoysticktoenter.
3.Theplayerwillstartrecordingimmediately.Ablinkingwill 
appearontheleftsideofthescreen.
Note:WhileplaybackisstoppedorpausedinMUSICorRECORD
mode,youcansimplypresstheRECbuttontostart 
recording.
PauseRecording:
1.PresstheRECbuttontopauserecording.
Note: TheAutooffsettingdoesnotapplyhere.Theplayerwill
NOTautomaticallypoweroffwhenidleandarecording 
ispaused.
2.PresstheRECbuttonagaintoresumerecording.
StopRecording:
Pressthejoystickdowntostopandsavethecurrentrecording.
Note: Pressingthejoysticktotherightduringrecordingor
pausedrecordingwillstopandsavethecurrentrecording 
andstartanewone.
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Recording
SystemSetup
PlayRecordedVoiceFiles
1.EnterNAVfromthemainmenu.
2.EntertheVOICEsub-menu.
3.Pressthejoystickup/down/toselectthefile 
youwishtoplay.
4.Pressthejoysticktostartplayback.
Note:IfyouareinRECORDmode,pressthejoystickup
tostartplayback.
Note:VoicerecordingsaresavedautomaticallyintheVOICE
folderwiththefilenamesMIC001.MP3,MIC002.MP3,etc.
FMRecording
1.Tunetothestationthatyouwishtorecord.
2.Followthedirectionsforvoicerecording.
Note:FMrecordingworksthesamewayasvoicerecording
exceptthatyoumustbeinFMmode.
Note:FMrecordingsaresavedautomaticallyintheVOICE
folderwiththefilenamesFM001.MP3,FM002.MP3,etc.
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Thesystemmenucontainsthefollowingsub-menus.
1. EQ: Changetheequalizersettings (Normal,Classic,Live,Pop,Rock).
2. REPEATMode: Changetherepeatoptions.(refertopg.22).
3. Display: Adjustthescreendisplaysettings. 
ID3TAG:IfafilehasanID3tag,thetrackinformationsuch
asartist,songname,andalbumname,willbe
LYRIC:Ifthereisacorrespondinglyricsfile(.lrc),thelyrics
CONTRAST:AdjustcontrastofLCD. 
B-LIGHTTIME:Adjustbacklightilluminationtime
4. Autooff: Adjustthetimefortheplayertopoweroff.
5. REDORDING: Adjusttherecordingoptions. 
RECMODE:Adjusttherecordingquality. 
VAD:VoiceActivatedDetection.
6. RESUME:
7. DELETEFILE: Deletefiles.
8. FORMAT: FormattheinternalmemoryorSD/MMCcard.
9. Reset: Resetallsettingtothefactorydefault.
10. Information-1.F/WVersion: ViewcurrentF/Wversion.
displayedonthescreeninsteadofthefilename.
willbedisplayedonthescreen.
automaticallywhenitisleftunattended.
Whentheplayeristurnedbackon,itwillresume 
]playbackfromthepointatwhichitwasturnedoff.
Formattingwilleraseallofthefilesstoredinmemory.
2.INTERNALM.:Viewmemorystatus.
3.SD/MMCCard: ViewinfoofSD/MMCCard.
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Play/RepeatMode
LoopA-BRepeating/Resume
SettheRepeatMode
1.Gotothe"RepeatMode"sub-menu: 
MainmenuSYSmenuRepeatMode
2.Pressthejoysticktoenter"RepeatMode"
3.Pressthejoystickleft/right/toselectthedesired 
playmodeandpressthejoystick.
4.Toexitthemenu,pressMENUbutton.
NORMAL:Theplayerwillplaythetracksinnormalorder. 
ONE:Theplayerwillrepeatthecurrenttrack. 
ALL:Theplayerwillrepeatallofthetracks. 
INTRO:Theplayerwillplayeachtrackforafew
seconds.
RANDOM:Theplayerwillplayallofthetracksinrandom
order.
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StartingPoint"A"
Whileplayingmusicorvoicefiles,presstheA-Bbutton 
whenyouwanttosetthestartpointoftheloop.
appearsneartheuperrightcornerofthedisplay.
EndingPoint"B"
PresstheA-Bbuttonagaintosettheendpointoftheloop.
appearsinthedisplay.
Theloopwillplaybackrepeatedly.
PresstheA-Bbuttonagaintocanceltheloopplayback.
SettingtheResumeFunction
1.GototheRESUMEmenu.
2.Pressthejoysticktotherightto 
selet"ON"andpressthejoysticktoconfirm.
3.Ifyouwantittoalsoremembertheelapsedtime, 
pressthejoysticktotherighttoselet"ON"andpressthe 
joysticktoconfirm.
4.Whentheplayeristurnedbackon,itwillresume 
playbackfromthepointatwhichitwasturnedoff.
RESUME
1.TRACK ON
2.TIMELINE
OFF
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Delete/Format
Format
Delete
1.Gotothe"DeleteFile"submenu. 
MainmenuSYSmenuDeleteFile
2.The"DeleteFile"menudisplaysMusicandVoice. 
Pressthejoysticktoconfimanoption.The"DeleteFile" 
windowappears
3.Pressthejoysticktothelefttoselect"Yes"andpress 
thejoysticktodeletefile.
4.Pressthejoysticktotherighttoselect"NO"andpress 
thejoysticktoconfirm.Itwillskiptothenextfile.
MUSIC
DELETEFILE?
Format
Note: WhenyouwanttoformatthisMP3playeroran
SD/MMCCard,doNOTusetheformatcommand 
ofyourcomputer'soperatingsystem.Pleasefollow 
theinstructionsonthenextpage.
24
Format
1.Gotothe"Format"sub-menu. 
MainmenuSYSmenuFormat
2.The"Format"menudisplaysINTERNALM.andSD/MMCCard. 
Pressthejoysticktoconfimanoption.The"Format"window 
appears.
FORMAT
3.Pressthejoysticktothelefttoselect"Yes"andpressthe 
joysticktoformat.
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F/WUpgrade
TroubleShooting
DownloadingF/WUpgrade
Whenyouupgradethefirmware,makesuretouseanew 
batterybecauseittakesalargeamountofpowerto 
upgrade.Ifthebatteryrunsoutofpowerduringupgrading, 
theflashmemorymaygetdamaged.
1.Makesuretheplayeristurnedoff.
2.Connecttheplayertothecomputer.
3.Thecomputerwillautomaticallydetecttheplayerasa 
"Removabledisk"underMYCOMPUTER.
4.DownloadtheavailableF/WUpgradefromourwebsite.
5.SelectthenewF/Wupgradeanddrag-anddropitintothe 
removablediskicon.
Note: Aftercompletingthefiletransfer,disconnectthe
playerusing[StopaHardwaredevice].Referto 
page13fordetailnote"Disconnectingtheplayer".
6.Afterremovingtheplayer,turnonthepower.
Note: Theplayerwillautomaticallyupdateitselfwhenit
isturnedon.
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Theplayerdoesnotwork
1.Checkthebatterycapacity.
2.Checktoseeifthebatteryisinsertedproperly.
Downloadfailure
1.ChecktoseeifthedriverisinstalledcorrectlyonthePC.
2.Checktheconnection.
3.Checkifthememoryisfull.
4.Checkthebattery.
Thebuttonsdonotwork
1.Checktheholdswitch.
2.Removethebatteryonceandtheninsertitagain.
Poorsoundquality
1.Checkthequalityofthemusicfile. 
Downloaditagain.
Something'swrongwiththeLCDdisplay
1.Removethebatteryandtheninsertitagain.
TheLCDdisplaysnothing
1.CallcustomerserviceforHot-keyreboot.
Tel)1-718-416-3197,1-800-681-2629
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TroubleShooting
TroubleShooting
Whatdoes"FILEOPENERROR"mean?
ThiserrormessageindicatesthatthefileisDRM(Digital 
RightsManagement)protectedanditcannotbereador 
thefileisanincorrectfile.
WhydoesmyMP3playerread"NOFILE"?
IfyourMP3playerreadsnofileafteryouhavetransferred 
filesintotheunitthenitsimplymeansyouhavetransferred 
aninvalidfileformatintotheunit.Makesurethefileisan 
MP3orWMAfile.
WhydoesmyMP3playerread"SYSTEMERROR"?
IfyourMP3playerreadssystemerror,itmeansthefirmware 
iscorrupted.Youwillneedtoresetthefirmwareontheunit 
(seethenextpage).
WhydoIreceivean"OUTOFMEMORY"Errormessage
whenaddingsongstomyMP3player? 
ThiserrormessageindicatesthattheMP3player 
memoryisfull.ToaddnewsongstotheMP3player, 
youwillneedtocreatespacebydeletingexistingfiles.
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HowdoIreset/upgradethefirmware?
1.Makesuretheplayeristurnedoff.
2.ConnecttheMP3playertothecomputer.
3.Thecomputerwillautomaticallydetecttheplayer
as"RemovableDisk"underMyComputer.
4.Selectthefirmwareanddrag-and-dropitintothe
removablediskicon.Toobtainthefirmwarefile, 
pleasevisit:
http://www.cobyusa.com/support/support.php?sub_cat=manual
anddownloadtheMPC751"DRIVER"file.
5.Afterthefiletransfer,disconnecttheMP3playerusing 
the"SafelyRemoveHardware"toollocatedinthesystem 
tray.
6.OncetheMP3playerissafelyremovedfromyour
computer,turnonthepower.
IfyouarestillhavingdifficultysettingupyourMP3player, 
pleasecontactCustomerServiceorTechnicalSupport, 
Monday-Friday8:00AM-11:00PMEST, 
SaturdayandSunday9:00AM-11:00PMEST. 
Youcanalsoreachusonlineatcustomerservice@cobyusa.com 
ortechsupport@cobyusa.com 
1-800-681-2629OR718-416-319
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Specifications
Power--------------------------------------------------------1xAAABattery 
Memory-----------------------------------------------------------------512MB 
Size(WXHXD)-----------------------------------------------2.2"x2.87"x0.82" 
Interface---------------------------------------------------------USBRev.1.1 
Display-------------------------------------128x64dotsDot-MatrixLCD 
Processor---------------------------------------------------------65MIPSDSP 
AudioPlaybackFormat------------------------------------MP3/WMA 
VoiceRecording-----------------------------IMA-ADPCMencoding
32hoursrecording 
SignaltoNoiseRatio--------------------------------------------------90dB 
FrequencyResponse---------------------------------------20Hz~20KHz 
Output----------------------------------------------->5mW(eachoutput) 
DistortionOutput----------------------------------------------0.01%~0.1% 
FMtuner----------------------------------------------------87.5-108.0MHz 
Ports--------------------------------------------------------------------------USB 
WMAFormat---------------------------------------------------32-192Kbps 
MP3Format--------------------------BitRate:96-320Kbps,Variable 
SD/MMCCard-------------------------------------------Maxsize512MB
30
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