TS8320 Streaks

[Tigersbite]

This seems like such an odd issue - My TS8320 prints certain types of documents with streaks and others without. Photos and plain text using photo/standard quality print just fine. Others like PDFs and web pages have horrible streaks in them. What's weird is when I rasterize PDFs and print them, there are still streaks. Only by changing the Print Quality to "high" does it remove the streaks. Printing a test page from the maintenance menu yields a perfect print, so there's no print head or ink issues. Anyone else encounter this?

[leithp]

Same issue.  Just started in the last couple of days.  Test page prints beautifully.  High-quality mode produces great results.  Standard produces streaks ... gaps in color and/or black, even in places on text documents.  The doc on the left was printed in high quality mode.  One on the left in standard mode.

I'm bafflled.  I've run clean and deep clean.  Again the test pages look great.