PRINTER prints blanks all of sudden. HELP!! URGENT

[jdicresce]

My cannon MG5420 is printing blanks both from wifi and when I use USB port. I have checked the ink levels and even run devuce maintenance on the ink.  All is fine but ANYTHING I print just produces a vertical blue line and NO type/etc..

[Stephen]

Hi jdicresce!

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[Ramona · Accepted solution]

Hi jdicresce,

I would like to have you print a nozzle check pattern from the printer to see if the inkjet nozzles are dispensing the ink correctly.  To do this, please follow the steps located at the link below:

Printing the Nozzle Check Pattern

When the nozzle check pattern printed, did it look like the image below, including the black grid at the top above the colors?

If this is a time-sensitive matter, additional support options are available at Contact Us.

[jdicresce]

It did not print the black grid. I then allowed it to self clean the nozzle head which might have been clogged. No improvement. What now?! I have also replaced the printer cartridge and all of the ink.