J1 Error, Changed a brand new factory-sealed toner, still getting J1 Error

Make sure you have the right code: J1 or J2.
one is for the drum and the other is for the ink.
Make sure the toner unit is for this model and not for a different model.
If the old modual is still available, check the connectors at the back and see if they are the same.
If anything else Call Xerox for repair. If the cartridge was bought through Xerox have your reciete available for warrenty.
If repairs still need to be made, A Xerox service call may be needed in order to fully repair the copier and warrenty the cartridge.