BenQ MX815ST User Manual
![BenQ MX815ST manual cover](/images/tLYWVyOsJrOBkGHvLTqCOeCO/thumbs/thumb175x175.webp)
To connect your BenQ MX815ST projector to a laptop, use a VGA or HDMI cable. Connect one end to the projector's input port and the other to the laptop's output port. Then, select the appropriate input source on the projector using the remote or control panel.
If the projector does not turn on, ensure it is connected to a working power outlet. Check the power cable and connection. If the problem persists, try resetting the projector by unplugging it for a few minutes. If it still does not turn on, contact BenQ support.
To clean the lens, turn off the projector and unplug it. Use a can of compressed air to remove loose dust. For smudges, gently wipe the lens with a microfiber cloth. Avoid using cleaning fluids on the lens.
A blurry image can be caused by incorrect focus or distance. Adjust the focus ring on the projector lens. Ensure the projector is positioned at the correct distance from the screen according to the manual.
Regular maintenance includes cleaning the air filter every 500 hours of use and checking for firmware updates periodically. Always ensure proper ventilation to avoid overheating.
To update the firmware, download the latest version from the BenQ website. Follow the provided instructions to install the update via USB or another specified method. Ensure the projector is connected to a stable power source during the update.
If there is no sound, check the audio cable connections and ensure the volume is turned up on both the projector and the source device. Verify that the correct audio input is selected.
Overheating can occur if the projector is not properly ventilated. Ensure air vents are not blocked and clean the air filter regularly. If the issue persists, reduce ambient temperature and check for firmware updates.
To adjust the keystone, access the projector's menu and navigate to the keystone correction settings. Use the remote or control panel to adjust the vertical and horizontal keystone until the image is properly aligned.
The BenQ MX815ST supports ceiling mounting. Use a compatible ceiling mount kit and follow the installation instructions. Ensure the projector is securely attached and adjust the image orientation in the settings menu to invert the display.