BenQ PB8253 user manual Maintenance, Care of the projector

Page 48

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 filters to prevent overheating.

See "Cleaning the lens" and "Cleaning and replacing the dust filters" 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 40.

To remove dirt or dust, wipe the case with a soft, dry, lint-freecloth.

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. Refer to "Specifications" on page 57 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 filters

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

48 Maintenance

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Contents Welcome Copyright DisclaimerTable of contents Temperature information Important safety instructions Safety InstructionsSafety Instructions Locations near fire alarms Locations with an ambient temperatureBedding or any other soft surface Allow at least 50 cm clearance from wallsSafety Instructions Projector features IntroductionIntroduction Shipping contents Projector exterior view Front/upper sideRear/side view Lower viewConnector panel Controls and functions ProjectorRemote control LED indicator light Volume +PIP POS ModeRemote control effective range Remote control batteriesCeiling rear Ceiling front Floor frontPositioning your projector Choosing a locationSafety instructions for ceiling mounting of the projector Obtaining a preferred projected image size Page Maximum zoom Minimum zoom Screen Center of lens Projection distance1219 1500Connecting a computer or monitor Connecting a computerConnection Connection Connecting a monitor With a VGA cable With a VGA to DVI-A cableVGA to DVI-A Connecting Video source devices Connecting AudioBest video quality Better video qualityConnecting a DVI source device Mute on page 45 for detailsConnecting a Component Video source device Connecting an S-Video source device Connecting a composite Video source device Power on OperationStart up Switching input signal Adjusting the projected imageAdjusting the projection angle Auto-adjusting the image Fine-tuning the image size and clarityAny problems? Searching for details on the imageSelecting the aspect ratio Scales an image so that it is displayed in the centerOptimizing the image Correcting keystoneFor example Selecting a preset mode PC/DVI-A Signal InputYPbPr/YCbCr/DVI-D/S-Video/Video Signal Input Other adjustments Adjusting brightnessAdjusting contrast Selecting a color temperatureOperating in a high altitude environment Personalizing the projector menu displayUsing the laser pointer in the presentation Hiding the imageRemote paging operations Freezing the imageOperation on the remote control PIP Picture In Picture operationOperation in the OSD menus Shutting down the projector On-Screen Display OSD menu operation OSD menu systemUsing the menus Pressing Left/ Right on the projector or remote controlDisplay menu Display menu Image menu Volume Source menuMirror TrebleControl menu PIP menu Maintenance Care of the projectorFront filter Rear filter11, and the other is on the left side see item 16 on Use and replacement of the lamp Lamp informationReplacing the lamp Temperature information Indicators Stand-by modeIllustration Projector is under normal operationPower Temp Lamp Thermal events Troubleshooting Remote control does not workProjector does not turn on No pictureRemote mouse function does not work Specifications Projector specificationsDimensions Timing chartHorizontal Vertical Pixel Resolution Frequency Mode KHz MHz Supported timing for PC including DVI-I inputSignal Format Horizontal Frequency Vertical Frequency KHz Supported timing for Component-YPbPrinputSupported timing for Video and S-Video inputs Warranty Limited WarrantyRegulation Statements FCC statementEEC statement MIC statement