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Try turning Off the printer, overnight.
Look inside the printer, where the carriage and the cartridges are - is there any dust or dirt in the interior of your printer, discernible ?
The error B200 is usually significant of either a failure in electronics, or a failure to 'read' a strip, owing to its having gotten dusty.
To rest the printer overnight, and then be advised how to try cleaning the strip (carefully! and don't try it now, it may not even be necessary), is what I advise.