Mitsubishi Electronics HC7900DW user manual Maintenance, Cleaning of the projector and the vents

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Maintenance

Warning:

Do not use flammable solvents (benzene, thinner, etc.) and flammable aerosols when cleaning the projector body and lens. Flammable substances may ignite causing fire or breakdown while the lamp is illuminating.

Caution:

Be sure to turn off the lamp and unplug the power cord from the wall outlet before you perform any maintenance on the projector.

Ask your dealer for annual cleaning of the inside of the projector. If you continue to use the projector with dust inside, it may result in fire or malfunction.

Cleaning of the projector and the vents

Use a soft cloth to clean the projector and the vents. When the vents become dirty, wipe them with a soft cloth dampened with diluted mild detergent, and then wipe them with a dry cloth.

To protect the surface of the projector from fading or deteriorating:

Do not spray insecticide on or inside the projector.

Do not use benzine or thinner to clean it.

Do not let rubber or plastic materials contact with projector.

Cleaning of the lens

Use a standard lens-cleaning brush or a piece of lens tissue dampened with lens cleaning fluid. The lens surface is fragile. Use only recommended, nonabrasive lens-cleaning materials. Do not touch the lens with your fingers.

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Contents HC7900DW Risk of Electric Shock Do not Open Contents Important safeguards Important safeguards Removing the batteries from the remote control Inserting the batteries into the remote controlPreparing your projector What’s included in the boxPreparing your projector OverviewControl panel Remote control Picture quality adjusting buttonsPicture quality selection buttons Operational range of the remote control Using the remote controlReception distance Reception angleSetting up the screen Setting up your projectorWhen the aspect ratio of the screen is Screen size and projection distanceSetting up your projector When the aspect ratio of the screen is 2.351 CinemaScopeWhen the aspect ratio of the image is When fine streaks are seen on projected images Adjusting the position of the projected imageWhen projected images are distorted to a trapezoid Correcting skewed or distorted imageRear projection Front projection, ceiling mountingTrigger terminal Viewing video images Connecting the projector to video equipmentBasic home theater system connection PreparationConnecting to video equipment having a Hdmi terminal Viewing video imagesConnection for video equipment having an Hdmi terminal Connecting to a DVD player or Hdtv decoder Plugging in the power cordProjecting images To stop projecting ZOOM1 ZOOM2 Stretch ANAMORPHIC1 ANAMORPHIC2 Setting the aspect ratioHow to change the settings With the remote controlWith the Feature menu See page 29 for menu setting Plugging the power cord Connecting the projector to a computerViewing computer images About DDCViewing computer images Setting of the resolution When connecting to a notebook computerExample of the setting procedure for external output Auto Position buttonViewing 3D images Installing the 3D emitterUsable 3D glasses and 3D emitter 3D images viewingViewing 3D images To stop the signal emitted from the 3D emitter temporarilyTo convert 2D images to 3D images With the 3D menuEN-27 Menu operation You can make various settings using the displayed menusHow to set the menus Menu operationPress the  or  button to select a menu to use Image menu Menu itemsSetup Auto Setting Function Advanced MenuPicture Menu Reset Screen SizeInstallation menu Feature menu Signal menu Information menu To adjust the brightness Contrast Adjusting projected imagesTo adjust the color Color and Tint With the Image menuTo adjust the tone of white Color Temp Adjusting projected imagesAbout color temperature To enable the stored color temperatureTo change the Iris mode With the remote control To optically brighten or darken projected images IrisTo use BrilliantColor To enable the stored gamma mode To adjust the ratio of change in brightness Gamma ModeTo use Color Management BLUEMAGENTAREDLPF Progressive filter To adjust the vertical positionPassword function Advanced featuresTo enable the password function To cancel the password functionReplacing the lamp Interval of lamp replacementReplacing the lamp When the projector is mounted to the ceilingReset of the lamp operation time Maintenance Cleaning of the projector and the ventsCleaning of the lens No image appears on the screen Problem TroubleshootingTroubleshooting No image appears on the screen Problem SolutionImages are not displayed correctly Problem Solution Others Problem Solution EN-49 EN-50 Power Status Condition IndicatorsCondition Possible Solution Normal conditionDimension drawings unit mm SpecificationsHdmi SerialSpecifications Supported input signals3D supported signals Separately sold items ConnectorsCOMPUTER/COMPONENT Video Hdmi 1, Hdmi VLT-HC7800LPZusho Baba, Nagaokakyo-City, Kyoto Japan