Dirty yellow (SP-540V)

Has the yellow sucked up some magenta? Common with the shared head. Maybe time for a new cap. Also be sure machine is level. I heard if one cartridge is full and the other near empty it can cause the ink to be sucked back. Do a regular clean until it prints clear, or just print big bars of yellow until it comes clean.

 

Cap tops, clogged/dirty pump lines or pumps going bad can all cause this. I think dampers can possibly cause it also but from my experience it is usually a from the cap tops down issue.

 

This site and YouTube...

 

It's pretty straight forward. Pull the cover and you can access the lines easily.

 

I had that happen to me on a SP-300v. I let the yellow run to low, didn't heed the warnings! So yellow starting printing magenta as well. I turned off the printer with the heads parked and removed the cover that allows access to the pump and lines. Disconnect the magenta/yellow line from the "Y" going to the pump. use a syringe and carefully and very slowly pull ink through the head. Pull just a tiny tiny amount. put it back together, run a medium or powerful cleaning and test print. Hopefully it got better. If need be repeat or run another cleaning and check if it's improved. Good Luck!!