HP Designjet 4520 Printer series - Manual (Page 155)

12. Investigate the front of the roll module, behind the drawers.
13. Remove any paper that you see there.
14. Remove any paper trapped between the roll and the small plastic rollers.
15. Go behind the printer and find the three vertical slits at the rear of the roll module.
ENWW A paper jam in drawer 2 [4520] 145
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