problem with final print outcome

[lindanz]

We have a HP laserjet model MFP M277dw, we love it but have been having a problem with what looks like little pink flies down one side of the paper when it is printed, is there a setting to turn that off or what is causing it, thanks

[lindanz]

a couple of reports for you..... as you can see the what happens when we print in colour on the left hand side all the way down the page

[lindanz]

they are still the original Toner's that came with the Printer when we bought it 

[lindanz]

can anyone help with this please, thanks

[Reskape]

Hello @lindanz

There will be only 2 parts that could possible generate that issue 

either the fuser or the actual toner well now that I think about it maybe the transfer belt 

try running 2 cleaning pages from the service menu and then 3 color calibrations to see if it will solve the issue 

Swapping toners will be a good idea even if you have old ones  to isolate issue to printer or ITB 

[lindanz]

Hi,, have just done what you suggested and it is still doing it. the latest Diagnostic's page for you to see, thanks

[lindanz]

forgot to say we don't have any spare toners to try that 

[tonerspills]

to me, that looks like the magenta cartridge is what is causing this. There is some type of contaminate or flaw with the imaging drum of that cartridge. The reason you are seeing the repeating defect is that as the drum in the cartridge spins around that spot is picking up toner when it shouldn't. Either some type of contaminate has gotten onto the drum, or the photoconductive chemical coating the drum has gotten messed up somehow and the charge wont erase off the drum causing it to continually pick up toner each time it spins.

[lindanz]

so to fix that means we need to buy a magneta toner or is there something we can do to fix it, it is still under Warranty so would the toners be covered as they are still the original

Edit to add that the last time we had a clean print without those on the side was end of May 2016 

[lindanz · Accepted solution]

UPDATE:  Took MFP in and had it checked out by Printer Techie, tried a new toner and made no differenct so he rang HP and they replaced the MFP as it was still under Warranty 

Thanks to those that tried to help