Paper jam - already manually cleaned rollers/3 levels of printhead cleaning

[sunsmoo]

The paper keeps jamming and print quality is not fully back to normal - I spent an hour manually cleaning the paper rollers with Q-tips and alcohol wipes, all the build up on the white plastic plate under the cover, took off the back plate and cleaned those rollers. Then I spent 40 minutes doing three levels of printhead cleaning using the HP Smart app. I waited 2 hours and ran the 3 levels of print head cleaning again. The print quality still has streaks, and the paper jams after about 3 pages. 

[Hawks_Eye]

Hi @sunsmoo 

Welcome to the HP Support Community! 

Thanks for posting your query! We're here to help you get back up and running.

It sounds like you've already put in a lot of effort to resolve the paper jamming and print quality issues with your HP OfficeJet Pro 8720. 

Let’s try a few additional steps to tackle these problems:

1. Paper Jamming

• Inspect the Paper Path Thoroughly: Double-check for any tiny scraps of paper or debris in the paper path, including the input tray, output tray, and duplexer. Even small pieces can cause jams.
• Use High-Quality Paper: Ensure you're using paper that meets the printer's specifications. Avoid wrinkled or damp paper.
• Adjust Paper Guides: Make sure the paper guides in the tray are snug against the paper stack without bending it.
• Clean the Rollers Again: If you haven’t already, use a damp lint-free cloth to clean the rollers. Let them dry completely before using the printer.

2. Print Quality Issues

• Align the Printhead: Use the printer’s control panel or the HP Smart app to align the printhead. Misalignment can cause streaks.
• Check Ink Levels: Ensure all cartridges have sufficient ink. Low ink levels can affect print quality.
• Run a Diagnostic Report: Print a diagnostic page to identify specific print quality issues. This can help pinpoint whether the problem lies with the printhead or cartridges.
• Replace the Printhead (if necessary): If cleaning and alignment don’t resolve the streaks, the printhead might need replacement.

3. Firmware Update

• Visit the HP Support website to check for and install the latest firmware updates for your printer. Firmware updates can resolve bugs and improve performance.

4. Reset the Printer

• Turn off the printer, unplug it from the power source, and wait for about 60 seconds.
• Plug it back in, turn it on, and try printing again.

 

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Take care, and have an amazing day!

Regards, 

Hawks_Eye