MX812ST

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Why does the projector not respond to any command when powering on or turning off?
How to resolve the "Illegal Format" message that popped up when I was inputting RS232 commands?
Which reminder messages will stop being displayed after "Reminder Message" is switched off?
Can I control the BenQ projector with a remote control designed by other manufacturers?
How do I use a RS232 cable to power on or power off the projector?
How do I use a RS232 cable to control the volume and sound on the projector?
Does the projector support changing slides on PowerPoint using a remote which emulates page up and page down commands for both Windows PC and MacOS?
How should I choose a projection screen?
How to change the lamp and reset the lamp timer?
How do I clean my projector lens?
How do I mute the projector?
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 ?
How many pairs of 3D glasses can BenQ projectors sync with at once?
Can I change the projector lamp myself?
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?
For projectors that use an anamorphic lens, there are Anamorphic 2.4:1/Anamorphic 16:9 options in the Aspect Ratio setting. May I know what they are for?
My remote control is not working. What can be done to fix it?
Why can’t I use a QR code to log in to the AMS system when the projector is turned on?
Why doesn't the projector accept content formatted in 3D?
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?
Which 3D glasses are recommended for BenQ projectors with 3D features?
Which types of BenQ projectors require a power cycling process?
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