NEC PE455UL - Troubleshooting

9. Appendix
143
9-8. Troubleshooting
This section helps you resolve problems you may encounter while setting up or using the projector.
Common Problems & Solutions
Problem Check These Items
Doesnotturnonorshut
down
• Checkthatthepowercordispluggedinandthatthepowerbuttonontheprojectorcabinetorthe
remotecontrolison.(→pages16,18)
• Checktoseeiftheprojectorhasoverheated.Ifthereisinsucientventilationaroundtheprojector
oriftheroomwhereyouarepresentingisparticularlywarm,movetheprojectortoacoolerlocation.
• Thelightmodulemayfailtolight.Waitafullminuteandthenturnonthepoweragain.
• Set[FANMODE]to[HIGHALTITUDE]whenusingtheprojectorataltitudesapproximately5200
feet/1600metersorhigher.Usingtheprojectorataltitudesapproximately5200feet/1600meters
orhigherwithoutsettingto[HIGHALTITUDE]cancausetheprojectortooverheatandtheprojector
couldshutdown.Ifthishappens,waitacoupleminutesandturnontheprojector.(→page74)
 Ifyouturnontheprojectorimmediatelyafterthelightmoduleisturnedo,thefansrunwithout
displayinganimageforsometimeandthentheprojectorwilldisplaytheimage.Waitforamoment.
• Incaseit’shardtothinkthetroubleisnotcausedontheabovementionedconditions,unplugthe
powercordfromtheoutlet.Thenwait5minutesbeforepluggingitinagain.(→page33)
Willturno • Ensurethatthe[OFFTIMER]or[AUTOPOWEROFF]iso.(→page65,78)
Nopicture • Checkiftheappropriateinputisselected.(→page20)Ifthereisstillnopicture,presstheSOURCE
buttonoroneofthesourcebuttonsagain.
• Ensureyourcablesareconnectedproperly.
• Usemenustoadjustthebrightnessandcontrast.(→page58)
• CheckthattheAV-MUTE(imageo)buttonsarenotpressed.
• Resetthesettingsoradjustmentstofactorypresetlevelsusingthe[RESET]intheMenu.
(→page82)
• EnteryourregisteredkeywordiftheSecurityfunctionisenabled.(→page45)
• IftheHDMI1INortheHDMI2INsignalcannotbedisplayed,trythefollowing.
- Reinstallyourdriverforthegraphicscardbuiltinyourcomputer,orusetheupdateddriver.
 Forreinstallingorupdatingyourdriver,refertotheuserguideaccompaniedwithyourcomputer
orgraphicscard,orcontactthesupportcenterforyourcomputermanufacturer.
 InstalltheupdateddriverorOSonyourownresponsibility.
 Wearenotliableforanytroubleandfailurecausedbythisinstallation.
• 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.
* Ifthescreengoesblankwhileusingyourremotecontrol,itmaybetheresultofthecomputer’s
screen-saverorpowermanagementsoftware.
• Seealsothepage145.
Picturesuddenlybecomes
dark
• CheckiftheprojectorisintheForcedECOmodebecauseoftoohighambienttemperature.