02-11-2013 11:45 AM
01-02-2017 12:15 PM
I tried turning the printer off/on and shutting the cartridge door several times with no success. What eventually worked for me was :
Removing the cartridges and cleaning the electrical contacts and the ink inlets; uninstalling the canon printer software; and reinstalling... Not sure which solution worked, but the printer is ok now, if only temporarily.
07-29-2019 01:31 PM
I accept the solution from Patrick, the Canon Expert, and will inquire into the Canon Upgrade Program.
Also, my printer is an MX860, not 870; I mistyped.
In addition, my wife fiwed it by sticking a thin spatula into the printer casing and pressing on the tops of the cartridges. This caused the problem cartridge to seat itself and the error went away.
BTW, I have never had a problem with this printer in its long lifetime. Go Canon!
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