Mitsubishi Electronics HC900 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 separately sold that is exclusive to this projector. Contact your dealer for purchase of the lamp.

WARNING:

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

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. You may be injured in your eye by flying or falling glass fragments.

Don’t replace the lamp immediately after use because the lamp cover is 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.

Interval of lamp replacement

The recommended interval of lamp replacement is about 2000 hours*1 *2 of consecutive use. Such interval differs depending on the operating environment and may be shorter than 2000 hours*1 *2. Decrease in luminescence and/or color brightness indicates that the lamp needs to be replaced. When the lamp operation time exceeds 1500 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 1900 hours*1, the replacement message (LAMP EXCHANGE) will appear on the screen for one minute every 10 hours*1 thereafter.

When the lamp operation time exceeds 2000 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 When LAMP MODE of the INSTALLATION menu is set to STANDARD. When it is set to LOW, this duration will be extended.

*2 When LAMP MODE is set to LOW, this duration will be extended up to 4000 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 in- struction 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 has 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.

Don’t replace the lamp with the projector installed on the ceiling. Glass fragments may fall from the projector, entering your eye or mouth causing injury.

When placing the projector upside down to replace the lamp or conduct maintenance, ensure that the projec- tor is securely placed before working with it.

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Contents HC900 When using the projector in Europe Compliance NoticeContents Important safeguards Do not modify this equipment Place of installationNever remove the cabinet Do not block the air inlet and outlet grillesInserting the batteries into the remote Checking accessoriesPreparating your projector ControlTerminal panel OverviewControl area ButtonAdjustment foot Front Lamp cover Adjustment feet Rear Remote controlUsing the picture quality adjusting buttons Preparating your projector ContinueUsing the remote control Operational range of the remote controlReception angle Basic setup Setting up your projectorSetting up the screen Adjusting the projection angleWhen the aspect ratio of the screen is Screen size and projection distanceBasic home theater system connection Connecting the projector to video equipmentViewing video images PreparationsConnecting to a Video player, etc Connecting to a DVD playerWhen a TV tuner or VCR is connected Plugging in the power cord Connecting to video equipment having a DVI-D terminalViewing video images Projecting images PreparationWhen projected images are distorted to a trapezoid To stop projectingCineFocus button With the remote control Setting the aspect ratioHow to change the settings With the Feature menuViewing computer images Connecting the projector to a computerPlugging the power cord For digital connectionEN-19 Viewing computer images When connecting to a notebook computerExample of the setting procedure for external output Auto Position buttonHow to set the menus Menu operationMenu operation Available settings in the menusInstallation menu Image menuFeature menu Signal MenuTo adjust the color Color and Tint Adjusting projected imagesTo adjust the brightness Contrast and Brightness To sharpen or soften the projected image SharpnessTo adjust the tone of white Color Temp About color temperatureTo enable the stored color temperature Adjusting projected images To adjust the vertical positionLPF Progressive filter To enable the password function Advanced featuresPassword function To cancel the password functionHow to install Advanced featuresInstallation other device’s remote commands How to use the installed functionsAsking for installation Dimension Drawings unit mmInterval of lamp replacement Replacing the lampCleaning of the lens MaintenanceCleaning of the projector and the ventilation slots Reset of the lamp operation timeTroubleshooting No image appears on the screen Problem SolutionProblem Solution Images are not displayed correctlyTroubleshooting Others Problem SolutionTemperature Abnormal condition IndicatorsNormal condition Status ConditionSpecifications Replacement part Option / Not included in the boxConnectors DVI-D HdcpMitsubishi Projector Contact Information North America