PIXMA TS6420a prints test pages, won't print a document or only prints select parts of a document

[fdhurry]

I've reloaded Canon's Print Drivers for this particular printer over a dozen times - no change.  I've done the Maintenance Nozzle Check, Cleaning, Deep Cleaning, and Nozzle Alignment - no change.  Any suggestions?  I purchased this printer in December 2024.  My last Canon printer functioned flawlessly for over 15 years.  I'm quite confident that this isn't simply "operator error."