Thank you for the link to the service manual although I was aware that this was a possible cause for 6c10 and have checked, as best as I can, for any obstructions.
Interesting that Canon support suggested that "there is a hardware related issue related to the print head" but of course I haven't...
Two years and a few months old and after only 5 cartridge changes my (until now) trouble free MG5250 halts on printing with a 6C10 error code.
After trying all the hardware checks and reset commands I could find I have used the service tool to reset the relevant counters but I still get the...