Yellow cartridge seems to have leaked and I have a line of yellow on the edge of my prints

Hi, guys any idea how I can fix this? I have replaced the cartridge and cleaned the inside of the printer but still having the same issue.

 

Hi guys, I purchased a new Yellow developer unit and replaced it, whilst giving the printer a good, thorough clean; turning the heads and cleaning everything.

That fixed the yellow problem! However, I'm now presented with a new problem (see the print out below).

Any suggestions?

I'm hoping it's an easy fix, otherwise may have to give up

See the problem here.