NEC UM280X User Manual

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8. Appendix
Problem CheckTheseItems
Mic sound is not heard • CheckifyourmicrophonecableisconnectedtotheMICinputjackcorrectly.
• Checkifyouuseadynamicmicrophone.Pluginpowermicrophonesarenotsupportedbytheprojector.
Mic sound is too loud
or quiet
• Adjust[MICGAIN]fromthemenu.(→ page 92)
Formoreinformationcontactyourdealer.
If there is no picture, or the picture is not displayed correctly.
• PoweronprocessfortheprojectorandthePC.
 BesuretoconnecttheprojectorandnotebookPCwhiletheprojectorisinstandbymodeandbeforeturningon
thepowertothenotebookPC.
 InmostcasestheoutputsignalfromthenotebookPCisnotturnedonunlessconnectedtotheprojectorbefore
beingpoweredup.
NOTE:Youcancheckthehorizontalfrequencyofthecurrentsignalintheprojector’smenuunderInformation.Ifitreads“0kHz”,
thismeansthereisnosignalbeingoutputfromthecomputer.(→page100orgotonextstep)
• Enablingthecomputer’sexternaldisplay.
 DisplayinganimageonthenotebookPC’sscreendoesnotnecessarilymeanitoutputsasignaltotheprojector.
WhenusingaPCcompatiblelaptop,acombinationoffunctionkeyswillenable/disabletheexternaldisplay.Usu-
ally,thecombinationofthe“Fn”keyalongwithoneofthe12functionkeysgetstheexternaldisplaytocomeon
oroff.Forexample,NEClaptopsuseFn+F3,whileDelllaptopsuseFn+F8keycombinationstotogglethrough
externaldisplayselections.
• Non-standardsignaloutputfromthecomputer
 IftheoutputsignalfromanotebookPCisnotanindustrystandard,theprojectedimagemaynotbedisplayed
correctly.Shouldthishappen,deactivatethenotebookPC’sLCDscreenwhentheprojectordisplayisinuse.Each
notebookPChasadifferentwayofdeactivate/reactivatethelocalLCDscreensasdescribedinthepreviousstep.
Refertoyourcomputer’sdocumentationfordetailedinformation.
• ImagedisplayedisincorrectwhenusingaMac
 WhenusingaMacwiththeprojector,settheDIPswitchoftheMacadapter(notsuppliedwiththeprojector)ac-
cordingtoyourresolution.Aftersetting,restartyourMacforthechangestotakeaffect.
 ForsettingdisplaymodesotherthanthosesupportedbyyourMacandtheprojector,changingtheDIPswitchon
aMacadaptermaybounceanimageslightlyormaydisplaynothing.Shouldthishappen,settheDIPswitchto
the13"xedmodeandthenrestartyourMac.Afterthat,restoretheDIPswitchestoadisplayablemodeandthen
restarttheMacagain.
NOTE:AVideoAdaptercablemanufacturedbyAppleInc.isneededforaMacBookwhichdoesnothaveaminiD-Sub15-pin
connector.
• MirroringonaMacBook
* WhenusingtheprojectorwithaMacBook,outputmaynotbesetto1024×768unless“mirroring”isoffonyour
MacBook.Refertoowner’smanualsuppliedwithyourMaccomputerformirroring.
• FoldersoriconsarehiddenontheMacscreen
 Foldersoriconsmaynotbeseenonthescreen.Shouldthishappen,select[View]→[Arrange]fromtheApple
menuandarrangeicons.

NEC UM280X Specifications

General

Brand	NEC
Model	UM280X
Category	Projector
Language	English