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BenQ SP831 The picture contains static or noise, The remote mouse function does not work

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The computer projected picture is too big for the screen or appeared to be cutoff

Cause	Remedy
The computer's resolution does not	1.	Make sure the H Position and V Position
match the projector's resolution.		settings are correct in the Display >
		Position menu.
	2.	Configure the computer's external
		display resolution to the projector's
		native resolution (1280 x 768 for SP830/
The computer's external monitor		SP831). If this option is not available,
setting is locked in 640 x 480.		select one of the compatible listed in
		"Supported timing for PC (including DVI-
		I) input" on page 77.
	3.	Check if your presentation files are
		created for a different resolution.

My Window Media Player program works great on my computer, but the movie window is dark on my projector, while the Media Player tools display OK.

	Cause	Remedy
		Change the Display settings. Click Start >
		Control Panel > Display > Settings >
		Advanced > Display. See you computer
	The computer external display is set	documentation for details, if you cannot find
	The computer external display is set	the Display settings by following the
	as a secondary display.	the Display settings by following the
	as a secondary display.	instructions above. Set the Monitor to Primary,
		instructions above. Set the Monitor to Primary,
		and the Panel to Secondary. You will see the
		movie window on the projection screen, while
		the Panel movie window will be dark.

The remote mouse function does not work.

	Cause	Remedy
	The USB cable is not correctly	Check the connection. See "Connecting a
		computer" on page 23 for details.
	connected to the projector or
		If it still doesn't work, check the mouse driver.
	computer.
		See the mouse documentation for details.

The picture contains static or noise.

	Cause	Remedy
	You are using a computer cable longer	Change you signal cable to a regular length
	than 6 feet (2 meters), or an extension	and avoid using extension cables.
	cable.
	Your computer and video cables	Keep your computer and video cables away
	Your computer and video cables	from the power cord as much as possible to
	interfere with each other.	from the power cord as much as possible to
	interfere with each other.	prevent interference.
		prevent interference.

Troubleshooting 75

Contents

SP830/SP831 Digital Projector User Manual Table of contents Important safety instructions Introduction Positioning your projector Connection Maintenance Troubleshooting Specifications Warranty and Copyright information Regulation statements 1. Important safety instructions Page Page Ceiling mounting the projector 2. Introduction Projector features Page Projector exterior view Controls and functions Projector Remote control Page Operating the LASER pointer Making the remote control a wired control Remote control effective range Installing remote control batteries 3. Positioning your projector Choosing a location Obtaining a preferred projected picture size How to determine the position of the projector for a given screen size How to determine the recommended screen size for a given distance Projection dimensions Page Page 4. Connection Connecting a computer Connecting a monitor Connecting Video source devices Connecting a DVI source device Connecting a Component Video source device Page Connecting Audio device 5. Operation Starting up the projector Using the menus Securing the projector Using a security cable lock Utilizing the password function Setting a password If you forget the password Changing the password Disabling the password function Switching input source Auto-adjustingthe picture Fine-tuningthe picture size and clarity Correcting picture distortion Correcting pincushion distortion and barrel distortion Two parallel sides No parallel sides Pincushion/Barrel correction Page Page Magnifying and Searching for details on the projected picture Selecting a picture mode Fine-tuningthe selected picture mode Setting the User 1/User 2/User 3 mode Renaming user modes Resetting the picture mode Fine-tuningthe picture quality Advanced picture quality controls Selecting a color temperature Setting a preferred color temperature Color Management Selecting a Gamma setting Color Space Transfer Operating in a high altitude environment Hiding the picture Displaying more than one picture source simultaneously Splitting the screen PIP (Picture In Picture) operation Split Screen and PIP source conflict list Disabled functions for the active windows The Split Screen display way Creating your own startup screen Personalizing the projector menu display Adjusting the sound Remote paging operations Freezing the picture Locking control keys Shutting down the projector Menu operation On-ScreenDisplay menu structure Display System Setup Setup Information Picture --Basic menu Picture --Advanced menu Display menu System Setup menu Advanced Setup menu Information menu 6. Maintenance Care of the projector Cleaning the lens Cleaning the projector case Storing the projector Lamp information Getting to know the lamp hour Extending lamp life Timing of replacing the lamp Replacing the lamp Page Resetting the lamp timer Indicators 7. Troubleshooting The remote mouse function does not work The picture contains static or noise 8. Specifications Projector specifications Timing chart Supported timing for PC (including DVI-I)input Supported timing for Component Video input Dimensions 9. Warranty and Copyright information Limited warranty Copyright Disclaimer 10. Regulation statements FCC statement EEC statement MIC statement WEEE directive