I was printing a multi page document. After one page the printer stopped and displayed Support Code 7700 "Turn off the device and contact the service center". I haven't found an easy way to "contact the service center". I purchased this printer in May of 2021. I've seen posts that hint that the problem may be that I wasn't using Canon print cartridges, but the cartridges that are installed are the same brand that I have used in the past without any problem. I've had the printer unplugged and it still will only boot up to the point of Support Code 7700. Any ideas???
