These things can happen and the B200 error is sometimes unavoidable, it’s nobody’s fault, because just turning on the printer can trigger this error to appear, but that doesn’t mean the print head is damaged or has failed.
You’ll need to thread the Pro 10 with a bit more respect, it reacts differently to holding down the power button, (Not good) so try un-plugging it from the wall socket and closing the front paper tray, this will do to start with.
Next leave it turned off for 15 minutes then turn on and when the printer responds, open the top cover only and wait, the print head should move to the centre, and if it doesn’t it may have got jammed in the parking position, most likely caused by poor transportation and handling..
Try this for now and if no success then come back and we can show you how to unlock the print head and move it to the centre position.. Small steps and lots of patients needed..