BenQ SP840 Maintenance, Care of the projector, Cleaning the lens, Cleaning the projector case

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Maintenance

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.

Never remove any parts of the projector except the lamp. 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 use any type of abrasive pad, alkaline/acid cleaner, scouring powder, or volatile solvent, such as alcohol, benzene, thinner or insecticide. Using such materials or maintaining prolonged contact with rubber or vinyl materials may result in damage to the projector surface and cabinet material.

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 46 and unplug the power cord.

To remove dirt or dust, wipe the case with a soft, lint-free 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 63 or consult your dealer about the range.

Retract the adjuster feet.

Remove the battery 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 a suitable soft carry case.

English

Maintenance 55

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Contents Welcome SP840 Digital Projector User ManualEnglish Table of contentsImportant safety Warranty and CopyrightSafety Instructions Important safety instructions4 Important safety instructions Safety Instructions Continued12. Do not place this projector in any of the following environments 6 Important safety instructions Ceiling mounting the projectorIntroduction Projector featuresStandard accessories Shipping contentsOptional accessories Front/upper side Projector exterior viewProjector Controls and functionsSee Using the menus on page 26 for details Remote control See Auto-adjusting the image on page 30 for details Operating the LASER pointerSee Switching input signal on page 29 for details Replacing the remote control battery Remote control effective rangeChoosing a location Positioning your projectorPositioning your projector Obtaining a preferred projected image size16 Positioning your projector How to determine the recommended screen size for a given distanceInches SP840 projection dimensions169 screen diagonalTo connect the projector to a notebook or desktop computer Connecting a computer or monitorConnecting a computer ConnectionsTo connect the projector to a monitor Connecting a monitorBetter video quality Connecting Video source devicesConnecting Audio Best video qualityTo connect the projector to an HDMI source device Connecting HDMI source devicesTo connect the projector to a Component Video source device Connecting Component Video source devicesTo connect the projector to an Audio source device To connect the projector to an S-Video source device Connecting S-Video source devicesS-Video Cable AV device Audio Cable To connect the projector to a composite Video source device Connecting Composite Video source devices24 Connections Starting up the projector Operationremote control to turn the OSD menu on Using the menusUsing a security cable lock Securing the projectorSetting a password Utilizing the password functionIf you forget the password password next time the projector is started Entering the password recall procedureChanging the password Disabling the password functionChanging Color Space Switching input signalFine-tuning the image size and clarity Adjusting the projected imageAdjusting the projection angle Auto-adjusting the imageUsing Auto Keystone Correcting keystoneKeystone function Selecting the aspect ratio Magnifying and searching for details32 Operation 4. Letter Box About the aspect ratio5. Real Optimizing the image Setting the User 1/User 2/User 3 modeSelecting a picture mode Adjusting Color Fine-tuning the image quality in user modesAdjusting Brightness Adjusting ContrastSelecting a Gamma Selection Adjusting Clarity ControlSelecting a Color Temperature UserFine Tuning Selecting a Color TemperatureSelecting a White Peaking Adjusting Brilliant Color3D Color Management 2. Press MODE/ENTER and the 3D Color Management page displays Selecting Color Space ConversionSelecting a Video Format 1. Go to the PICTURE Advanced menu and highlight 3D Color ManagementSelecting a Film Mode Remote paging operationsSelecting a 3D Comb Filter Locking control keys Setting the Sleep TimerHiding the image INPUT SOUCER Adjusting the soundFreezing the image Operating in a high altitude environmentTurning off the Power on/off Ring Tone Adjusting the sound levelAdjusting the Treble level Adjusting the Bass levelControlling the projector through a Lan environment Configuring the Lan Control SettingsIf you are in a DHCP environment If you are in a non-DHCP environment Controlling the projector remotely through a web browserii. To switch input source, click on your desired signal Shutting down the projector Personalizing the projector menu displaySub-menu Menu operationMenu system Main menuMute VolumePower on/off Disable/30 min/1 hr/2 hr/3 hr/4 hr/8Equivalent Lamp Hour Description of each menu for details Menu display time Menu position52 Operation Mute default setting DESCRIPTION default setting/valuevalue Care of the projector MaintenanceCleaning the lens Cleaning the projector caseGetting to know the lamp hour Setting Lamp mode as EconomicSetting Auto Power Off Lamp informationMessage Timing of replacing the lampSee Setting Lamp mode as Economic on page Status58 Maintenance Replacing the lamp4. Loosen the screws that secure the lamp SETUP Advanced Lamp Settings Resetting the lamp timerLight IndicatorsPower Power eventsThe projector does not turn on TroubleshootingRemote control does not work The password is incorrectProjector specifications Specifications254325 DimensionsCeiling Mount Installation 132.4Supported timing for COMPUTER input Timing chartEnglish Supported timing for Component-YPbPr inputSupported timing for HDMI HDCP input Supported timing for Video and S-Video inputs68 Specifications Disclaimer Warranty and Copyright informationLimited warranty CopyrightWEEE directive Regulation statementsFCC statement EEC statementRegulation statements Accessibility Requirements for Rehabilitation Act of 1973, Section
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