Canon B200 Error

A problem with the print head or the ink system. The printer stops rather than continue, because the fault it has detected is one that can damage the head permanently if printing carries on, usually overheating or a short across the head's contacts. The order things are worth trying in matters here. Switch the printer off and unplug it for a few minutes, since the code latches and a genuine power cycle clears the latch on its own more often than people expect. If it returns, open the cover, take the cartridges out, and lift the print head out of the carriage. Look at the gold contacts on the head and at the matching contacts in the carriage: dried ink, a smear, or a trace of moisture across them produces exactly this fault, and cleaning both sides with a dry lint free cloth and letting them dry completely is the repair in a large share of cases. Put the head back so it seats fully, then the cartridges, then power on. Refilled and third party cartridges are worth suspecting if you use them. Ink that runs at a different resistance, or a chip the printer cannot read, can present as a head fault rather than an ink fault. Fitting genuine cartridges, even briefly, is a quick way to establish which it is. The honest part: if it comes back immediately after a clean reseat with cartridges the printer accepts, the head itself has usually failed. Replacement heads are sold separately and can be fitted at home, but on most consumer models the head costs enough that it is worth comparing against the price of the printer before ordering one.

This one usually points at a hardware fault rather than something a setting will clear, so treat an unchanged result after a power cycle as a reason to contact the manufacturer rather than to keep trying.