Thanks for prompt replies. I understand the contradiction - but : Prints printed in Black are correct however, when trying to print in Sepia where there are browns the print is correct but where there should be black there is green. Very frustrating. I have changed three cartridges and all are at least 75 %. The new Magneta Cartridge shows full but is barely visible on Print Check.
I have just ordered a Cleaning Cartridge for Magnenta and I hope that this will cure the problem.
Thank you for your further replies. I tried the Test followed by Clean and Magnenta was not completely blank but I am still at a loss to understand why the loss of one colour causes the Sepia and Colour problem. I will update later.
Just wondering if you are using windows own Picture and Fax viewer to print from, or do you print from a photo editing application.
There is a problem printing from windows own wizard with Epson, I had the problem mentioned on the Epson link myself with my Epson R200 and now print from photo editing prog, this is an Epson workaround for the problem to continue printing from the windows wizard. May not be relevant in your case, as you say it happened suddenly,but just wondered.