BenQ W770ST Remove the lamp cover from the projector, Loosen the screw that secures the lamp

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3.Remove the lamp cover from the projector.

2.Loosen the screws that secure the lamp cover on both sides of the projector until the lamp cover loosens.

3.Remove the lamp cover from the projector.

•Do not turn the power on with the lamp cover removed.

•Do not insert your fingers between the lamp and the projector. The sharp edges inside the projector may cause injuries.

1

2

4.	Disconnect the lamp connector from the projector.
5.	Loosen the screw that secures the lamp.	2
6.	Lift the handle so that it stands up.	1
6.	Lift the handle so that it stands up.	3

7. Use the handle to slowly pull the lamp out of the projector.

• Pulling it too quickly may cause the lamp to break and scatter broken glass in the projector.

• Do not place the lamp in locations where water might splash on it, children can reach it, or near flammable materials.

• Do not insert your hands into the projector after the lamp is removed. If you touch the optical components inside, it could cause color unevenness and distortion of the projected images.

	8.	As shown in the figure, lower the new lamp.
	9.	Reconnect the lamp connector to the projector.
	10.	Tighten the screw that secures the lamp.	2
	11.	Ensure the handle is fully laid flat and locked in place.	2
	11.	Ensure the handle is fully laid flat and locked in place.	3
	•	Loose screw may cause a bad connection, which could result in	1
		malfunction.
	• Do not over tighten the screw.

50 Using the projector

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Contents W750/W770ST Digital Projector Home Cinema Series User ManualWarranty and Copyright Table of contentsConnecting with video Positioning your projectorImportant safety instructions Do not cover the projector with any item Disposal Moisture condensationAvoid volatile liquids Lead, which is contained in solder Mercury, which is used in the lampSome of the accessories may vary from region to region Shipping contentsOverview Remote controlCeiling mounting the projector Replacing the remote control batteriesRemote control effective range 8 Overview High brightness Projector featuresHigh picture quality Vivid color reproductionFront and upper side view Projector exterior viewSee Connecting with video equipment on page 19 for connection details Rear and lower side viewControls and functions Control panelRemote control Positioning your projector Choosing a locationHow to determine the recommended screen size for a given distance Obtaining a preferred projected image sizeHeight Projection dimensionsDiagonal WidthVertical offset inchImage Installation for a 43 ratio screenLowest lensDiagonal Preparations Connecting with video equipmentConnecting HDMI devices 20 Positioning your projector Connecting component-video devicesConnecting S-Video or video devices Connecting a computer Connect the projector to a computer with a VGA cableUsing the projector Turning the projector onENTER Fine-tuning the image size and claritySelecting an input source Securing the projector Using the menusUsing a security cable lock If you forget the password Utilizing the password functionSetting a password Input Password page displaysDisabling the password function Entering the password recall procedureChanging the password 26 Using the projectorCorrecting picture distortion Adjusting the projected imageAdjusting the projection angle Fine-tuning the selected picture mode Using the preset and user modesSelecting a preset mode Setting the User 1/User 2/User 3 modeAdjusting Brightness Fine-tuning the picture qualityResetting the picture mode Adjusting ContrastAdjusting Sharpness Adjusting ColorAdjusting Tint Selecting a color temperatureSetting a preferred color temperature Advanced picture quality controlsSetting Black Level Controlling image clarityColor Management Selecting a Gamma settingAdjusting Brilliant Color among Red , Green , Blue , Cyan , Magenta and Yellow Setting Film ModeSetting 3D Comb Filter Turning off the Power On/Off Ring Tone Adjusting the soundAdjusting the sound level Muting the soundSelecting the aspect ratio About the aspect ratioMagnifying and searching for details OSD menus can be displayed on those unused black areasConnecting 3D video devices Watching 3D contentOperating in a high altitude environment Using the 3D menusTake appropriate breaks when watching 3D content Stop watching 3D content if you feel fatigue or discomfortTurning the projector off Personalizing the projector menu displayLocking control keys On-Screen Display OSD structure On-Screen Display OSD menusPreset Mode Cinema/Dynamic/Standard/User 1/User 2/User 3/3DAdvanced System SetupBasic InformationPicture menu Audio Setup menu Display menuSystem Setup Basic menu Resetting the lamp timer on page 51 for details System Setup Advanced menuReset Lamp Timer Closed Caption EnableInformation menu This menu shows you the current operating status of the projectorAdditional information Care of the projectorExtending lamp life Lamp informationGetting to know the lamp hour Install a new lamp for optimal performance. If the projector is Timing of replacing the lampReplacing the lamp until the next hour lamp warning appearsLoosen the screw that secures the lamp Disconnect the lamp connector from the projector3. Remove the lamp cover from the projector Lift the handle so that it stands upResetting the lamp timer The projector needs to cool for 90 seconds after the power IndicatorsPowering up Powerblocked The internal temperature is too highThe intake ventilation or the exhaust ventilation is The projector may be in a poorly ventilated locationring. See page Troubleshootingswitched on. See page necessary. See pageElectrical SpecificationsOptical Mechanical127.7 Unit mmCeiling mount screws M6 x 8 Max. L = 8 mm 76.5133.97 74.5102.84 253.47XGA120 FrequencyXGA60 BenQ NotebookSupported timing for 3D signal with Top-Bottom and Side-by-Side format XGA120 H. Freq. KHz Supported timing for 3D signal with Side-by-Side formatRefresh rate Hz Pixel Freq. MHzSupported timing for Video and S-Video inputs 62 Using the projectorSupported timing for EDTV and HDTV via Component inputs NTSCCopyright Warranty and Copyright informationWarranty Disclaimer