I have no reference point to compare against nor firsthand knowledge of your printer to recognize what may be demonstrated in your images.
Any error codes or messages from the printer alerting to a problem?
Looking at your User Manual, print out a Test Print (Page 55) and Color Demo Page (Pages 100 and 119). Both of these appear to be found in the List/Test Print menu on the printer's screen. What I am looking for is a color test pattern that would show swaths of different colors so maybe we can tell what color(s) are at issue.