It may well work fine for some printers and not at all for others. The only way to know for sure if it would work on yours is to try it and see.

 

Read this: Canon Knowledge Base - Printer Shows a B200 or Related Error (Models with Individual Ink Tanks) but before buying the Head, go here>Canon U.S.A., Inc. | PIXMA iX6820 and if you don't already have it, get the complete driver update which was put out only 2 months ago. See if it changes anything.

 

My Pixma ix6820 is throwing a B200 error code, which according to Canon, means the print heads are bad and that the printer must be serviced or replaced.

Yes, it mostly means the printer detects high temperatures and says the print head burned.

I've read up on this issue over at the Canon community forums and some people have reported they had good luck just be thoroughly cleaning the print heads. So I did this. And then I let the printer sit for almost two days to make sure everything was bone dry when I reassembled it. But no luck for me, it's still throwing the B200 code

Many users also report following the open/close procedure works, there are videos on youtube showing this regarding turning the printer on, letting it do it's thing and then trying to change cartridges etc etc and closing the lid at specific timing - position, came across this by accident.

My question goes out to anyone familiar with the maintenance of these printers. Will a replacement print head unit clear the B200 code?

Here, I came across this situation on similar models by Canon, the closest being the IX6810 (cousin of your printer). Just before talking about replacing the print head, let's talk about something you haven't tried: deep cleaning.

Remove the print head and soak it in warm water (no minerals, make sure it's the cleanest you can get, no tap water). Lots of ink will flow out of the print head, replace the water and repeat. After a while (half a hour or 1 hour) do it again with more water not hot, but hotter than before, apply gentle pressure via syringe, remember... gently... and push and pull the liquid in order to absolutely remove the old ink inside. Eventually you have to get clean water with no signs of ink. The key here is to be patience, I've done this with great results taking the full afternoon, not kidding. You might also try placing the print head on some clean cloth so the ink will move from the inside to the cloth pulling water from the top naturally.

After making sure you completed this patiently, place the print head and try again, don't give up. I recovered print heads this way, the thing is sometimes ink is left inside in non-liquid state, and that's why the nozzles get so hot and fail to move the ink, in fact it gets worse, you might recover the print head but it's possible that you will loose a few nozzles, you won't know until you try.

In my experience, sometimes printers of this type accept other print heads but just temporarily, sometimes it works out of the box. Just remember, if you manage it to recover the print head, or if it never failed, the key here is to NEVER stop printing, don't let the ink sit.