BenQ MP770 user manual Maintenance, Care of the projector

Page 53

Maintenance

Care of the projector

Your projector needs little maintenance. The only thing you need to do on a regular basis is to keep the lens clean and to clean the dust filter to prevent overheating.

See "Cleaning the lens" and "Cleaning and replacing the dust filter" below for details.

Never remove any parts of the projector except the lamp and dust filter. Contact your dealer if other parts need replacing.

Cleaning the lens

Clean the lens whenever you notice dirt or dust on the surface.

Use a canister of compressed air to remove dust.

If there is dirt or smears, use lens-cleaning paper or moisten a soft cloth with lens cleaner and gently wipe the lens surface.

Never rub the lens with abrasive materials.

Cleaning the projector case

Before you clean the case, turn the projector off using the proper shutdown procedure as described in "Shutting down the projector" on page 43 and unplug the power cord.

To remove dirt or dust, wipe the case with the supplied cleaning cloth.

To remove stubborn dirt or stains, moisten a soft cloth with water and a neutral pH detergent. Then wipe the case.

Never use wax, alcohol, benzene, thinner or other chemical detergents. These can damage the case.

Storing the projector

If you need to store the projector for an extended time, please follow the instructions below:

Make sure the temperature and humidity of the storage area are within the recommended range for the projector. Please refer to "Specifications" on page 64 or consult your dealer about the range.

Retract the adjuster feet.

Remove the batteries from the remote control.

Pack the projector in its original packing or equivalent.

Transporting the projector

It is recommended that you ship the projector with its original packing or equivalent. When you carry the projector yourself, please use the original box or provided soft carry case.

Cleaning and replacing the dust filter

It is necessary to clean the dust filter periodically. If the filter is not cleaned, it can become clogged with dust and prevent proper ventilation. This can cause overheating and a malfunction of the projector.

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Contents Welcome Disclaimer CopyrightTable of contents Troubleshooting Specifications Refer servicing to qualified service personnel Important safety instructionsFuture reference Projector lamp is on Do not look straight at the projectorSafety Instructions Bedding or any other soft surface 10000 Feet Important safety instructionsSafety Instructions Introduction Projector featuresIntroduction Shipping contents Rear side Projector exterior viewFront/upper side Projector Controls and functionsAuto Lamp indicator lightRemote control PIP LED indicator lightMode MuteRemote control batteries Remote control effective rangeChoosing a location Positioning your projectorSafety instructions for ceiling mounting of the projector Obtaining a preferred projected image size Page Screen Center of lens Projection distance Maximum zoom Minimum zoom1219 1500Connecting a computer or monitor Wireless connection optionalConnection Cable connectionVGA Socket, not the DVI-I socket With a VGA cable With a VGA to DVI-A cableBest video quality Connecting Video source devicesBetter video quality Least video qualityConnecting Audio Connecting a DVI source deviceConnecting a Component Video source device Menus. See Audio Settings on page 50 for details To connect the projector to an S-Video source device Connecting an S-Video source deviceConnecting a composite Video source device Operation OperationStart up Setting a password Utilizing the password functionIf you forget the password Up , Right, Down, Left respectivelyDisabling the password function Entering the password recall procedureChanging the password Adjusting the projection angle Switching input signalAdjusting the projected image Fine-tuning the image size and clarity Auto-adjusting the imageSearching for details on the projected image Correcting keystoneYou are satisfied with the shape Control. Go to the Display Keystone menuSelecting the aspect ratio Setting the User 1/User 2 mode Selecting an application modeGo to the Picture Application Mode menu Optimizing the imageAdjusting brightness Fine-tuning the image quality in user modesAdjusting contrast Selecting a color temperatureHiding the image Other adjustmentsOperating in a high altitude environment PIP Picture In Picture operation Creating your own startup screen Remote paging operationsFreezing the image Shutting down the projector Personalizing the projector menu displayPress Message will disappearMenu system Menu operationPC source Brightest Video source Cinema/MovieAdvanced Information ResolutionBasic Use Left/ Right to select the Display menu Using the menusDisplay menu Picture menu Auto Source Source menuDetection Network System setup Basic menu System setup Advanced menu Lamp Timer Mode ResolutionInformation menu SourceCare of the projector MaintenanceClean the Air Filter To clean the filterCheck the Air Filter Replacing the filter spongeCalculation of lamp hour Lamp informationOut of Lamp Usage Time Replacing the lampPage Restart the projector Temperature informationTighten the screw that secures the lamp Stand-by mode IndicatorsPowering up IllustrationLight Status & Description Power Temp Lamp Thermal events Remote control does not work TroubleshootingProjector does not turn on No pictureRemote mouse function does not work Projector specifications SpecificationsSupported timing for PC including DVI-I input Timing chartSupported timing for Component-YPbPrinput Supported timing for Video and S-Video inputsMm W x 94 mm H x 238 mm D 291 Unit mm Specifications DimensionsLimited warranty WarrantyFCC statement Regulation statementsEEC statement MIC statement
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