What is a b200 error code

It indicates a bad print head. You can try the following:

Update drivers (corrupt driver may be the cause).

Remove print head and clean it and its connection thoroghly.

Replace ink cartridges.

Unplug and leave without power for 2 hours.

If it turns out that you need a new print head, you might as well get a new printer, the difference in money is only slight.