Without knowing what printer you own, the advice we can provide will be limited.
You are not going to have success if the nozzle test pattern fails to print. If one or more deep cleanings doesn't resolve the issue, the inks could be old, or dried up. The printhead might be clogged or there might be another electrical related issue.
Bay Area - CA
~R5 C (188.8.131.52) ~RF Trinity, ~RF 100 Macro, ~RF 100~400, ~RF 100~500, +RF 1.4x TC, +Canon Control Ring, BG-R10~DxO PhotoLab Elite ~DaVinci Resolve ~Windows11 Pro ~ImageClass MF644Cdw/MF656Cdw ~Pixel 8 ~CarePaks Are Worth It
So that the Community can help you better, we will need to know more information.
What is the exact model printer you're using (it's usually on the top or front of the unit)?
Do you see any error messages?
Which version of Windows or macOS are you using?
How do you connect to your printer (USB or WiFi)?
Any other details you'd like to give will only help the Community better understand your issue.
If you're in the United States, and this is an urgent support need, please click HERE to visit your My Canon Account to discover your personalized support options.
If you're outside the USA, please click HERE to find support options in your country.
Thanks, and have a great day!
12/05/2023: New firmware updates are available.
09/26/2023: New firmware updates are available.
08/18/2023: Canon EOS R5 C training series is released.
07/31/2023: New firmware updates are available.
05/18/2023: New firmware updates are available.
03/30/2023: New firmware updates are available.