Mitsubishi Electronics HC7900DW user manual Replacing the lamp, Interval of lamp replacement

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Replacing the lamp

This projector is equipped with a lamp to project images. This lamp is a consumable. It may burn out or its brightness may decrease during use. In such cases, replace the lamp with a new one as soon as possible. Be sure to replace the lamp with a new lamp sold separately that is exclusive to this projector. Contact your dealer for purchase of the lamp.

Spare lamp VLT-HC7800LP

Warning:

Be careful not to drop the lamp fixing screws inside of the projector. Don’t put a metal piece or flammable object into the projector. Using the projector with any foreign object present inside may result in electric shock or fire. When you can’t remove the foreign object from the inside, contact your dealer for removal.

Do not touch the lamp with bare hands or give a shock to the lamp. Attach the lamp properly. Improper handling may cause explosion.

Be sure to install the lamp securely. When the lamp isn’t installed properly, it won’t illuminate. Improper installation may also result in fire.

Don’t shake the removed lamp or don’t lift it above your face. Your eyes may be injured by flying or falling glass fragments.

Don’t replace the lamp immediately after use because the lamp cover will be very hot. You may get burned. Turn off the power using the POWER button. After the lamp goes out, wait about two minutes until the intake and exhaust fans for cooling the lamp stop rotating. Then unplug the power cord, and wait at least one hour to allow the lamp to cool down enough to the touch.

Keep small parts such as screws out of the reach of babies and children. If swallowed, those parts can cause suffocation. In case a baby or a child swallows them, see a doctor.

Interval of lamp replacement

The recommended interval of lamp replacement is about 5000 hours*1*2 of consecutive use. Such interval differs depending on the operating environment and may be shorter than 5000 hours*1*2. Decrease in luminescence and/or color brightness indicates that the lamp needs to be replaced. When the lamp operation time exceeds 3750 hours*1, the indicator will blink alternately between green and red (while the lamp is lit; when the lamp is not lit, the indicator will be lit red only) and the lamp replacement message will appear on the screen for one minute everytime the lamp is turned on. When the lamp has been used for about 4750 hours*1, the replacement message (LAMP REPLACEMENT) will appear on the screen for one minute every 25 hours*1 thereafter. When the lamp operation time exceeds 5000 hours*1*2, the projector automatically shuts off and can’t be used until the lamp is replaced and the lamp operation time is reset.

*1: Duration when LAMP MODE of the INSTALLATION menu is set to LOW. When it is set to STANDARD, this duration will be shorted.

*2: When LAMP MODE is set to STANDARD, this duration will be shorted to 3000 hours.

Caution:

Don’t remove the lamp for any purpose other than replacement. Unnecessary removal of the lamp may result in a breakdown.

This projector uses a high-pressure mercury lamp as the light source. The high-pressure mercury lamp may explode or fail to illuminate permanently because of an impact, scratch, or deterioration through use. The period of time until explosion or permanent failure to illuminate varies considerably from lamp to lamp, depending on operation conditions. Therefore, the lamp may explode soon after the start of use.

The possibility of explosion of the lamp increases if you use it beyond its replacement period. When the instruction of lamp replacement appears, replace it with a new one immediately even if the lamp is still lighting normally.

When the high-pressure mercury lamp explodes, glass fragments will scatter inside or outside the lamp box and the gas charged inside the lamp will diffuse inside or outside the projector. The gas inside the lamp contains mercury. Be careful not to breathe it or avoid it from entering your eye or mouth. If you should breathe it or if it should enter your eye or mouth, see a doctor immediately.

In the event that the high-pressure mercury lamp exploded, glass fragments may have been scattered inside the projector. Ask your dealer to replace the lamp and to inspect the inside of the projector. When you clean or replace the lamp by yourself, be sure to hold the handle of the lamp. You may get injured by glass fragments.

When removing the lamp from the ceiling-mounted projector, use the lamp replacement attachment packed with the projector or option lamp to prevent glass fragments from scattering.

Be sure to use the lamp exclusive to this projector, VLT-HC7800LP. Use of other lamps may cause a failure of the projector.

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Contents HC7900DW Risk of Electric Shock Do not Open Contents Important safeguards Important safeguards Preparing your projector Inserting the batteries into the remote controlRemoving the batteries from the remote control What’s included in the boxPreparing your projector OverviewControl panel Remote control Picture quality adjusting buttonsPicture quality selection buttons Reception distance Using the remote controlOperational range of the remote control Reception angleWhen the aspect ratio of the screen is Setting up your projectorSetting up the screen 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 projected images are distorted to a trapezoid Adjusting the position of the projected imageWhen fine streaks are seen on projected images Correcting skewed or distorted imageFront projection, ceiling mounting Rear projectionTrigger terminal Basic home theater system connection Connecting the projector to video equipmentViewing video images PreparationConnecting to video equipment having a Hdmi terminal Viewing video imagesConnection for video equipment having an Hdmi terminal Plugging in the power cord Connecting to a DVD player or Hdtv decoderProjecting images To stop projecting Setting the aspect ratio ZOOM1 ZOOM2 Stretch ANAMORPHIC1 ANAMORPHIC2How to change the settings With the remote controlWith the Feature menu See page 29 for menu setting Viewing computer images Connecting the projector to a computerPlugging the power cord About DDCViewing computer images Example of the setting procedure for external output When connecting to a notebook computerSetting of the resolution Auto Position buttonUsable 3D glasses and 3D emitter Installing the 3D emitterViewing 3D images 3D images viewingTo convert 2D images to 3D images To stop the signal emitted from the 3D emitter temporarilyViewing 3D images With the 3D menuEN-27 You can make various settings using the displayed menus Menu operationHow to set the menus Menu operationPress the  or  button to select a menu to use Menu items Image menuPicture Menu Reset Setting Function Advanced MenuSetup Auto Screen SizeInstallation menu Feature menu Signal menu Information menu To adjust the color Color and Tint Adjusting projected imagesTo adjust the brightness Contrast With the Image menuAbout color temperature Adjusting projected imagesTo adjust the tone of white Color Temp 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 use Color Management To adjust the ratio of change in brightness Gamma ModeTo enable the stored gamma mode BLUEMAGENTAREDTo adjust the vertical position LPF Progressive filterTo enable the password function Advanced featuresPassword function To cancel the password functionInterval of lamp replacement Replacing the lampWhen the projector is mounted to the ceiling Replacing the lampReset of the lamp operation time Maintenance Cleaning of the projector and the ventsCleaning of the lens Troubleshooting No image appears on the screen ProblemTroubleshooting No image appears on the screen Problem SolutionImages are not displayed correctly Problem Solution Others Problem Solution EN-49 EN-50 Condition Possible Solution IndicatorsPower Status Condition Normal conditionHdmi SpecificationsDimension drawings unit mm SerialSpecifications Supported input signals3D supported signals COMPUTER/COMPONENT Video Hdmi 1, Hdmi ConnectorsSeparately sold items VLT-HC7800LPZusho Baba, Nagaokakyo-City, Kyoto Japan