Roller replacement and cleaning:

This is typically caused by worn or dirty paper pick-up rollers. Locate the rubber rollers underneath and at the back of the tray path. Clean them thoroughly with a lint-free cloth dipped in distilled water or rubber rejuvenator to restore grip.

Reseat the printhead. Clean the electrical contacts manually. 3. Disassembly and Teardown Procedures

Perform this step if text characters appear jagged, jagged edges occur on graphics, or horizontal banding is visible. Press and hold the button. Press the Resume button three times . Release the Power button.

Possible causes: clogged printheads, empty ink cartridges, or incorrect paper settings. Run a print-quality diagnostic page from the Toolbox (Windows) or HP Printer Utility (Mac) to identify the source.

Issue B: Print Quality Degradation (Streaks, Missing Colors)

The printer will print an alignment pattern and automatically calibrate its internal optical sensors. 4. Hardware Disassembly and Teardown Procedures

Critical for resolving software-related errors and connectivity issues. You can find the latest downloads on the HP Support Site DIY Maintenance & Repair Tips