How to replace the rollers in ENVY 6400

[webwah]

I had to remove the rollers to loosen a deep paper jam in my hp envy 6400. Now I am unable to reinstall it, because I can't seem to get the roller mechanism to clip in on both side equally.

[Sneha_01]

Hi @webwah,

Welcome to HP Support Community.

Thank you for posting your query, I will be glad to help you.

When your HP OfficeJet Pro 7740 isn't scanning, it could be due to various reasons. Here's a step-by-step guide to troubleshoot:

Check Connection: Ensure that your printer is properly connected to your computer or network. If it's a wireless connection, make sure the Wi-Fi is working fine and the printer is connected to the same network as your computer.

Restart Devices: Sometimes, a simple restart can resolve connectivity issues. Restart your printer, computer, and router (if applicable).

Update Drivers: Make sure your printer drivers are up to date. You can download the latest drivers from the HP website.

Check Printer Settings: Ensure that the scanner settings on your printer are correctly configured. Refer to the printer manual for guidance on how to adjust scanner settings.

Software Issues: Sometimes, software conflicts can prevent scanning. Make sure there are no conflicts with other scanning software installed on your computer.

Check for Errors: Look for any error messages on the printer display or on your computer screen. These can provide clues about what's causing the issue.

Test with Another Device: If possible, try scanning from another device to determine if the issue is with your computer or the printer itself.

I hope this helps.

Take care and have a good day.

Please mark this post as “Accepted Solution” if the issue is resolved and if you feel this reply was helpful click “Yes”.

Rachel571

HP Support