LV-7280 User Manual

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7. Appendix

Common Problems & Solutions (→ "POWER/STATUS/LAMP Indicator" on page 74.)

Problem Check These Items

Does not turn on • Checkthatthepowercordispluggedinandthatthepowerbuttonontheprojectorcabinetortheremotecontrolison.See

pages 23 and 24.

• Ensurethatthelampcoverorthelampisinstalledcorrectly.Seepage73.

• 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,re-

place the lamp.

• Thelampmayfailtolight.Waitafullminuteandthenturnonthepoweragain.

• Thelamphasreachedtheendofitsusablelife.Replacethelamp.

• Set[Fanmode]to[Highaltitude]whenusingtheprojectorataltitudesapproximately5500feet/1600metersorhigher.Using

the projector at altitudes approximately 5500 feet/1600 meters or higher without setting to [High altitude] can cause the projec-

tor to overheat and the projector could shut down. Also the projector could not turn on due to the increased temperature of the

lamp after power off. If these happen, wait a couple minutes and turn on the projector. See page 63.

• Alsowhenthelampisturnedoff,theprojectorinternaltemperatureishot.Ifthepoweristurnedonbeforetheprojectorhas

cooled down, the fan will run a short time before the lamp will turn on.

• Ifanyoftheaboveisnotthecauseoftheproblem,turnoffthemainpoweranddisconnectthepowercord.Afterallowing5

minutes, plug the power cord and turn on the main power.

Will shut down • EnsurethattheOfftimerorPowermanagementisoff.Seepage64, 65.

No picture • UsetheINPUTbuttontoselectyoursource.Seepage26.

• Ensureyourcablesareconnectedproperly.

• Usemenustoadjustthebrightnessandcontrast.Seepage53.

• Removethelenscover.

•

Reset the settings or adjustments to factory preset levels using the [Reset] in the Menu. See page 68.

• EnteryourregisteredPasswordifthePasswordfunctionisenabled.Seepage40.

• WhenusingwithanotebookPC,besuretoconnectbetweentheprojectorandthenotebookPCbeforeturningonthepowerto

the notebook PC. In most cases signal cannot be output from RGB output unless the notebook PC is turned on after connecting

with the projector.

* If the screen goes blank while using your remote control, it may be the result of the computer's screen-saver or power man-

agement software.

• Seealsothenextpage.

Picture suddenly becomes dark • CheckiftheprojectorisintheForcedcoolingoperationbecauseoftoohighambienttemperature.Ifthisisthecase,lowerthe

internal temperature of the projector by selecting [High] for [Fan mode]. See page 63.

Color tone or Color balance is

unusual

• Checkifanappropriatecolorisselectedin[Screencolor].Ifso,selectanappropriateoption.Seepage59.

• Adjust[Colorbalance]in[Adjustment].Seepage53.

Image isn’t square to the

screen

• Repositiontheprojectortoimproveitsangletothescreen.Seepage28.

• UsetheKeystonecorrectionfunctiontocorrectthetrapezoiddistortion.Seepage31.

Picture is blurred • Adjustthefocus.Seepage29.

• Repositiontheprojectortoimproveitsangletothescreen.Seepage28.

• Ensurethatthedistancebetweentheprojectorandscreeniswithintheadjustmentrangeofthelens.Seepage11, 12, 82, 83.

• Condensationmayformonthelensiftheprojectoriscold,broughtintoawarmplaceandisthenturnedon.Shouldthishap-

pen, let the projector stand until there is no condensation on the lens.

Picture is distorted • MakesuretheVGAcableisconnected.

• PresstheAUTOPCbuttonontheprojectorcabinetortheremotecontrol.Seepage34.

Flicker appears on screen • Set[Fanmode]toothermodethan[Highaltitude]whenusingtheprojectorataltitudesapproximately5500feet/1600meters

or lower. Using the projector at altitudes less than approximately 5500 feet/1600 meters and setting to [High altitude] can

cause the lamp to overcool, causing the image to ﬂicker. Switch [Fan mode] to [Auto] or [High]. See page 63.

Image is scrolling vertically,

horizontally or both

• UsetheINPUTbuttontoselectyoursource.Seepage26.

• Adjustthecomputerimagemanuallywiththe[Horizontalposition]or[Verticalposition]inthe[Adjustment]

→

[Input signal].

See page 55.

Remote control does not

work

• Installnewbatteries.Seepage9.

• Makesuretherearenoobstaclesbetweenyouandtheprojector.

• Standwithin7m(22feet)oftheprojector.Seepage9.

Indicator is lit or blinking • SeethePOWER/STATUS/LAMPIndicatoronpage74.

Cross color in RGB mode • PresstheAUTOPCbuttonontheprojectorcabinetortheremotecontrol.Seepage34.

• Adjustthecomputerimagemanuallywith[Clock]or[Tracking]in[Inputsignal]inthemenu.Seepage54.

Whenever the projector is

turned on, a message prompt-

ing you to clean the ﬁlter will

be displayed

• CleanorreplacethelterandthenresettheFiltercounter.Seepage69, 68.

Press any button on the remote control or the projector cabinet to clear the message.

The projector is behaving in

an erratic way

• Turnoffthemainpoweranddisconnectthepowercord.

Allow 5 minutes and then plug the power cord and turn on the main power.

The [Projector overheating!

See the user’s manual.] mes-

sage is displayed.

• Checkforanyobstacleatventilation(inlet)oftherear.Ifthereisanobstacle,removeitorrelocatetheprojectortoanareawith

proper ventilation. If the ﬁlter is dirty or clogged, clean or replace the ﬁlter. After cleaning or replacing the ﬁlter, reset the [Filter

counter]. See page 69, 68.

For more information contact your dealer.

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User Manual - Page 84