Canon MG2900 series Online Manual page 692

168A
Cause
The FINE cartridge is not installed properly, or the FINE cartridge not compatible with this machine is
installed.
Action
Retract the output tray extension and the paper output tray, open the cover, then remove the FINE
cartridges.
Make sure that the FINE cartridge compatible with the machine is installed.
Then install the FINE cartridges again. Push up the FINE cartridge until it clicks into place.
After installing, close the cover.
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