Never did solve the MX870 problem. New printers being as cheap as they are and service costs being as high as they are, it was cheaper and easier to get a new printer. Good luck with resolving the problem.
Different customer but same problem. B200 message appears. When the printer is open, the print carriage does not move to an area where the ink cartridges and print head can be accessed. This happened immediately after a new print head was installed....