These are possible causes and solutions. Try one or more of the following:
Press to turn off the printer.
Remove the jammed banner paper from the printer.
To keep a banner print job from jamming:
Use only the number of sheets needed for the banner.
Select the following settings to enable the printer to feed paper continuously without jamming:
With your document open, choose File Page Setup.
From the Settings pop-up menu, choose Page Attributes.
From the “Format for” pop-up menu, choose the printer.
From the Paper Size pop-up menu, choose A4 Banner or US Letter Banner.
Select an orientation.
Click OK.