Welcome to HP Support Forums. A really great platform for posting all your questions and finding solutions.
I understand that your printer is printing blank pages.
Are you trying to print from your Phone or Computer?
To be able to assist you better, please provide me with the Printer Model or Product Number.
You can refer to this Link: hp.care/2bygf7l for help in locating the Product Number.
Thank you. :)
I Am An HP Employee