It means that a service technician is needed to fix the issue.
What is a hardware escalation?
Sounds like you have tried everything already, so it would be a hardware escalation: 1-800-835-6100.
When printing the Repeating Defects page on our 7760DN we get lines across 11 inch dimension on all colors every 44 mm. The directions say it is caused by the imaging unit but when we put a brand new imaging unit in the printer it does not change anything.