Hi there and welcome
Can you perform a clean of the drum unit please.
To do this follow the steps on my instructions below
Once done, run a print and tell me if it now functions correctly please.
ok, follow the cleaning process for 1 and 2 on my link please
If you repeat the process to clean it again, as it can take a few attempts, does it then remain fixed?
It is the print system that has faulted, it is leaking out. This is why it stops working correctly after a print.
I am really sorry about this and you are going to have to return the printer to have this replaced. It will be covered by the warranty if this has not expired, and the replacement will be done at no cost to you.
I am really sorry about this, and if you have problems, or would like any additional information or assistance, please do not hesitate to let me know.
And if you can take a second to rate my service by clicking one of the stars at the top of the page, then submit, that would be greatly appreciated.