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MX812ST

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How can I extend lamp life?
Why does projector have black line or flicker on the display?
Please don't place the projector in any of the following environments.
After covering the lamp lens while projector is on, the image is now blurred.
Can I leave my projector turned on 24/7?
What is BenQ Short-Throw Technology?
How long is the life-span of the light bulbs of the projector?
Why is the lamp is not as bright (or dimmed) after using for a period of time?
What is the difference between DLP projectors and LCD projectors?
The lamp is not on but the fan remains running, what is happening?
How do I clean the lens?
What reason will cause lamp to breakdown?
What's different between native resolution and supported resolution?
Projection is blurry, what can I do?
Why does projector have some noise?
How to change the lamp?
My projector powers off randomly. What is causing this?
Can I use the projector in a smoky and dusty environment?
My projector is suffering auto shutdown, what can I do?
The projection is out of position or not displayed in full, what can I do?
Why projector shows "USB Display detected", but no image is displayed on the screen ?
What is LAN Web Control?
Why is there slight scent of burning or plastic smell when using projectors？
Why I cannot use PointDraw on my ChromeBook?
May I use QPresenter in my mobile phone?
Please don't place the projector in any of the following environments.
Can I leave my projector turned on 24/7?
How to clean the lens?
The lamp is not on but the fan remains running, what is happening?
Why the keystone value can not be saved after turning off the projector?
The eco mode is much darker than SmartEco mode. Is it normal?
Projection is rather blurry, what can I do?
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