A. The projector would need to come to us for repair.
If your projector is still within the warranty period of 5 years please contact us directly at custadmin@casio.co.uk, if the projector is out of warranty, please follow the instructions on the link below on how to send the projector in.
https://casiouksupport.zendesk.com/hc/en-gb/p/ServicingAndRepairs