NEC P452H - Common Problems & Solutions

127
9. Appendix
Common Problems & Solutions
(→“POWER/STATUS/LAMPIndicator”onpage125.)
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 11, 12)
• Ensurethatthelampcoverisinstalledcorrectly.(→ page 121)
• Checktoseeiftheprojectorhasoverheated.Ifthereisinsufcientventilationaroundtheprojectororifthe
room where you are presenting is particularly warm, move the projector to a cooler location�
• Checktoseeifyoucontinuetousetheprojectorforanother100hoursafterthelamphasreachedtheend
of its life� If so, replace the lamp� After replacing the lamp, reset the lamp hours used� (→ page 68)
• Thelamp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4000feet/1200
meters or higher� Using the projector at altitudes approximately 4000 feet/1200 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 59)
If you turn on the projector immediately after the lamp is turned off, 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 24)
Will turn off
• Ensurethatthe[OFFTIMER]or[AUTOPOWEROFF]isoff.(→ page 52, 62)
No picture
• Checkiftheappropriateinputisselected.(→ page 14) 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 45)
• CheckthattheAVMUTE(imageoff)buttonsarenotpressed.
• Resetthesettingsoradjustmentstofactorypresetlevelsusingthe[RESET]intheMenu.(→ page 68)
• EnteryourregisteredkeywordiftheSecurityfunctionisenabled.(→ page 30)
• 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�
• SignalsmaynotbesupporteddependingontheHDBaseTtransmissiondevice.IRandRS232Ccannotbe
used in certain cases as well�
• 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next page�
Picture suddenly
becomes dark
• CheckiftheprojectorisintheForcedECOmodebecauseoftoohighambienttemperature.Ifthisisthe
case, lower the internal temperature of the projector by selecting [HIGH] for [FAN MODE]� (→ page 59)
Color tone or hue is
unusual
• Checkifanappropriatecolorisselectedin[WALLCOLOR].Ifso,selectanappropriateoption.(→ page
51)
• Adjust[HUE]in[PICTURE].(→ page 45)
Imageisn’tsquareto
the screen
• Repositiontheprojectortoimproveitsangletothescreen.(→ page 16)
• UsetheKeystonecorrectionfunctiontocorrectthetrapezoiddistortion.(→ page 21)
Picture is blurred
• Adjustthefocus.(→ page 19)
• Repositiontheprojectortoimproveitsangletothescreen.(→ page 16)
• Ensurethatthedistancebetweentheprojectorandscreeniswithintheadjustmentrangeofthelens.(→
page 69)
• Hasthelensbeenshiftedbyanamountexceedingtheguaranteedrange?(→ page 73)
• Condensationmayformonthelensiftheprojectoriscold,broughtintoawarmplaceandisthenturned
on� Should this happen, let the projector stand until there is no condensation on the lens�