BenQ MP770 user manual To clean the filter, Clean the Air Filter

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A warning message like the one pictured to the right will be displayed for 10 seconds every 500 hours of use to remind you to clean the filter. To leave the message, press ENTER on the projector or remote control.

Clean the Air Filter

The air filter should be cleaned every 500 hours of use.

If you have not done so, please clean or replace the filter.

To clean the filter

OK

1.Turn the projector off and wait until the fans stop running.

2.Locate the filter case on the back of the projector.

Filter case

3.Release the filter case from the projector by

pressing the filter case into the slot slightly. The filter case springs out of the slot.

4.Pull out the filter case.

5.Use a small vacuum cleaner designed for

computers and other office equipment to clean the filter sponge. Or use a soft brush (such as a clean artist's paintbrush) to gently sweep the dust on the filter away.

If the dirt is difficult to remove or the filter is broken, replace it with the supplied spare filter sponge. See "Replacing the filter sponge" next page.

54 Maintenance

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Contents Welcome Copyright DisclaimerTable of contents Troubleshooting Specifications Future reference Projector lamp is on Important safety instructionsRefer servicing to qualified service personnel Do not look straight at the projectorSafety Instructions 10000 Feet Important safety instructions Bedding or any other soft surfaceSafety Instructions Projector features IntroductionIntroduction Shipping contents Projector exterior view Front/upper sideRear side Controls and functions ProjectorLamp indicator light AutoRemote control Mode LED indicator lightPIP MuteRemote control effective range Remote control batteriesFront Rear Positioning your projector Choosing a locationSafety instructions for ceiling mounting of the projector Obtaining a preferred projected image size Page Projection dimensions Connection Wireless connection optionalConnecting a computer or monitor Cable connectionVGA With a VGA cable With a VGA to DVI-A cable Socket, not the DVI-I socketBetter video quality Connecting Video source devicesBest video quality Least video qualityConnecting a DVI source device Connecting AudioAV device DVI-D or DVI-I cable Audio Audio Cable cable1080i 50/ 60 Hz Connecting an S-Video source device To connect the projector to an S-Video source deviceConnecting a composite Video source device Operation Start upOperation If you forget the password Utilizing the password functionSetting a password Up , Right, Down, Left respectivelyEntering the password recall procedure Changing the passwordDisabling the password function Adjusting the projection angle Switching input signalAdjusting the projected image Remote control. a source selection bar displays. YouSearching for details on the projected image Auto-adjusting the imageFine-tuning the image size and clarity Correcting keystoneControl. Go to the Display Keystone menu You are satisfied with the shapeSelecting the aspect ratio Go to the Picture Application Mode menu Selecting an application modeSetting the User 1/User 2 mode Optimizing the imageAdjusting contrast Fine-tuning the image quality in user modesAdjusting brightness Selecting a color temperatureOther adjustments Operating in a high altitude environmentHiding the image PIP Picture In Picture operation Remote paging operations Freezing the imageCreating your own startup screen Press Personalizing the projector menu displayShutting down the projector Message will disappearPC source Brightest Menu operationMenu system Video source Cinema/MovieInformation Resolution BasicAdvanced Using the menus Use Left/ Right to select the Display menuDisplay menu Picture menu Source menu System setup Basic menu System setup Advanced menu Information menu Mode ResolutionLamp Timer SourceMaintenance Care of the projectorTo clean the filter Clean the Air FilterReplacing the filter sponge Check the Air FilterLamp information Calculation of lamp hourReplacing the lamp Out of Lamp Usage TimePage Temperature information Tighten the screw that secures the lampRestart the projector Powering up IndicatorsStand-by mode IllustrationLight Status & Description Power Temp Lamp Thermal events Plug the power cord into the AC inlet on Make sure that it is switched onRemote mouse function does not work Specifications Projector specificationsSupported timing for Component-YPbPrinput Timing chartSupported timing for PC including DVI-I input Supported timing for Video and S-Video inputsDimensions Mm W x 94 mm H x 230 mm D 298 Unit mm SpecificationsWarranty Limited warrantyEEC statement Regulation statementsFCC statement MIC statement
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