HP Designjet 4500 Series - Quick Reference Guide

15. Pull the front path towards you as far as it will go.
16. Try to move the printhead carriage out of the way.
17. Carefully remove any of the jammed paper that you can lift up and out from the top of the printer.
ENWW A paper jam (paper stuck in the printer) [4500] 127
The problem is... (paper topics)