HP Designjet Z2100 Photo printer series - Troubleshooting print-quality issues; General advice; Horizontal lines across the image (banding)

8 Troubleshooting paper issues
The paper has jammed
When a paper jam occurs, you normally see the Possible paper jam message in the front-panel display.
1. Power off the printer at the front panel and also switch it off at the rear.
2. Open the window.
3. Try to move the printhead carriage out of the way.
ENWW The paper has jammed 35
Troubleshooting paper issues