PIXMA PRO-100 ink levels are OK but computer says they're low and won't print

[NM_Bruce]

My PRO-100 printer prints all colors at the push of the front buttons.  No ink level warning lights are flashing.  Yet, my computer says the PM cartridge is low on ink and refuses to print.  What could be causing this?  Thanks in advance.

[jrhoffman75]

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@NM_Bruce wrote:

My PRO-100 printer prints all colors at the push of the front buttons.  No ink level warning lights are flashing.  Yet, my computer says the PM cartridge is low on ink and refuses to print.  What could be causing this?  Thanks in advance.

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Is it a Canon OEM ink cartridge?

What is the exact warning? My Pro-100 will print when a cartridge has the exclamation point. Only stops when the red X warning appears. 

[NM_Bruce]

The cartridge in there was not OEM.  I replaced it with a Canon cartridge.  Performed PDPU... even unplugged both the printer and computer and reinstalled the printer on the computer.  Happens with both a Windows 10 and a Windows 11 computer.

[NM_Bruce]

Also, computer give the standard 1600 warning for low ink level.

[jrhoffman75]

Does the printer produce a proper nozzle check pattern?

[NM_Bruce]

Yes.  A hint of streaking in the nozzle check, but even the printhead alignment looks good with all colors printing.