The No EP Cartridge error on your HP Printer generally indicates that there is a technical error with the toner cartridge or the DC controller. You can refer to the steps below to fix the No EP Cartridge error on HP Printer:
•Reset the toner cartridge on your printer or try a new one
•Check the High Voltage Contacts and see if there is any damage.
•Replace the High Voltage Power Supply and reseat the HVPS cable
•Replace the DC Controller on your HP Printer and print a test document
If you find that the error persists even after implementing the steps mentioned above you can call the
Hp Printer customer service number
and ask for additional technical assistance.
Hp Printer customer support