How to fix B200 error Canon MX870 printer

hopefully this will help you if you get this error. this B200 error can be caused by a few issues. from what I have been able to find, it's can be:
old dried up printer cartridges
cheap non OEM cartridges (not always)
empty printer cartridges
printer head system clogged
metal contacts on printer head degraded
automatic head cleaning components (sponge and rubber wiper) clogged with old ink.

the process in the video may or may not resolve your problem, but it did fix mine.

I cleaned my printer heads, replaced all the ink cartridges (I use cheap cartridges from eBay but they are fine), and did this process to get my printer back online. once it booted up I could then run the head cleaning process in the printer settings.

canon MX700 printer fix for B200 error.

cleaning printer head video:
   • How to Unblock and Clean Printer Head...