NEC PE455UL - Troubleshooting Check List

9. Appendix
152
9-11. Troubleshooting Check List
Before contacting your dealer or service personnel, check the following list to be sure repairs are
needed also by referring to the “Troubleshooting” section in your user’s manual. This checklist below
will help us solve your problem more eciently.
* Print this page and the next page for your check.
Frequency of occurrence:
□always □sometimes(Howoften?_________________________) □other(_____________________)
Power
□
Nopower(POWERindicatordoesnotlightblue).Seealso“Status
Indicator(STATUS)”.
□
Powercord’splugisfullyinsertedintothewalloutlet.
□
MainpowerswitchispressedtotheONposition.
□
NopowereventhoughyoupressandholdthePOWERbutton.
□
Shutdownduringoperation.
□
Powercord’splugisfullyinsertedintothewalloutlet.
□
[AUTOPOWEROFF]isturnedo(onlymodelswiththe[AUTO
POWEROFF]function).
□
[OFFTIMER]isturnedo(onlymodelswiththe[OFFTIMER]
function).
Video and Audio
□
NoimageisdisplayedfromyourPCorvideoequipmenttothe
projector.
□
StillnoimageeventhoughyouconnecttheprojectortothePC
rst,thenstartthePC.
□
EnablingyournotebookPC’ssignaloutputtotheprojector.
• Acombinationoffunctionkeyswillenable/disablethe
externaldisplay.Usually,thecombinationofthe“Fn”key
alongwithoneofthe12functionkeysturnstheexternal
displayonoro.
□
Noimage(blueorblackbackground,nodisplay).
□
StillnoimageeventhoughyoupresstheAUTOADJ.button.
□
Stillnoimageeventhoughyoucarryout[RESET]intheprojec-
tor’smenu.
□
Signalcable’splugisfullyinsertedintotheinputterminal
□
Amessageappearsonthescreen.
(_____________________________________)
□
Thesourceconnectedtotheprojectorisactiveandavailable.
□
Stillnoimageeventhoughyouadjustthebrightnessand/or
thecontrast.
□
Inputsource’sresolutionandfrequencyaresupportedbythe
projector.
□
Imageistoodark.
□
Remainsunchangedeventhoughyouadjustthebrightness
and/orthecontrast.
□
Imageisdistorted.
□
Imageappearstobetrapezoidal(unchangedeventhoughyou
carryoutthe[KEYSTONE]adjustment).
□
Partsoftheimagearelost.
□
StillunchangedeventhoughyoupresstheAUTOADJ.button.
□
Stillunchangedeventhoughyoucarryout[RESET]inthe
projector’smenu.
□
Imageisshiftedintheverticalorhorizontaldirection.
□
Horizontalandverticalpositionsarecorrectlyadjustedona
computersignal.
□
Inputsource’sresolutionandfrequencyaresupportedbythe
projector.
□
Somepixelsarelost.
□
Imageisickering.
□
StillunchangedeventhoughyoupresstheAUTOADJ.button.
□
Stillunchangedeventhoughyoucarryout[RESET]inthe
projector’smenu.
□
Imageshowsickeringorcolordriftonacomputersignal.
□
Stillunchangedeventhoughyouchange[FANMODE]from[HIGH
ALTITUDE]to[AUTO].
□
Imageappearsblurryoroutoffocus.
□
Stillunchangedeventhoughyoucheckedthesignal’sresolution
onPCandchangedittoprojector’snativeresolution.
□
Stillunchangedeventhoughyouadjustedthefocus.
□
Nosound.
□
Audiocableiscorrectlyconnectedtotheaudioinputofthe
projector.
□
Stillunchangedeventhoughyouadjustedthevolumelevel.
□
AUDIOOUTisconnectedtoyouraudioequipment(onlymodels
withtheAUDIOOUTterminal).
Other
□
Remotecontroldoesnotwork.
□
Noobstaclesbetweenthesensoroftheprojectorandthe
remotecontrol.
□
Projectorisplacednearauorescentlightthatcandisturbthe
infraredremotecontrols.
□
IDfortheprojectorandfortheremotearesame.
□
Buttonsontheprojectorcabinetdonotwork(onlymodelswiththe
[CONTROLPANELLOCK]function)
□
[CONTROLPANELLOCK]isnotturnedonorisdisabledinthe
menu.
□
StillunchangedeventhoughyoupressandholdtheINPUT
buttonover10seconds.