Pixma iP820 Printing with a magenta cast on Mac

[teej]

OS Monterey 12.4

We are having trouble getting the printer to print without a magenta cast and we are out of idea and have tried reinstalling software/drivers etc.

We even had one print come out fine, but it was uncentered on the page. We centered it and printed it again.. and it has a magenta cast.

What are we doing wrong?!

[Patrick]

Hi teej,

With your PIXMA iP8720 powered on, please open the cover and verify that the ink installed is the correct ink.  From left to right, the following ink should be installed:

CLI-251 Black BK
CLI-251 Gray GY
CLI-251 Yellow Y
PGI-250 PGBK PGBK
CLI-251 Cyan C
CLI-251 Magenta M

Next, please close the cover and load plain paper into the rear tray.

Please hold down the Resume button on your PIXMA iP8720 until the Power light blinks 2 times, then let it go

The Resume button is the middle button.

A test page will print.  Please compare your printout with the example at the bottom of this post.

At the top of the page, did a black grid print to the right of |PGBK| ?

Below that, did 3 blue, 3 pink, 1 yellow and 4 gray bars print?