Hardware troubleshooting and FAQs ← Knowledge Base Image alignment and projector troubleshooting Touch isn't working Touch bubbles/circles on the screen when no one is touching the surface No ink or poor ink There's no touch on one side of a double-panoramic system/touch driver icon is red Why is there color variance between the projectors? My projector image is blurry – how do I fix it? What is the IP range for the image alignment module and can it be customized? Warranty, warnings and important information How do I deal with warranty and product defects? How do I get both projectors to have the same color? How long will it take to fix my defective product? Why isn't touch working properly? How often should I change the projector dust filter? Reduce fan noise with ECO mode Can I connect a computer monitor to the PC connected to the projector? Can I connect my PC wirelessly to the projector? Can I use Span™ software with other interactive displays? What are the best USB extenders to use with the Span™ system?