Are you kidding? You will find the user manuals on
www.hp.com
Enter
www.hp.com-website
Click on the "Support" Link on the upper side, there on "Support & Troubleshooting"
Under "Find my product", set "HP Scitex FB700" or "HP Latex 3000"
Regularly 1 Match is found. Click on the link.
Next page you will find categories like "Download options", "Top issues", but "Manuals" too. Click on the "Manuals" Link.
There you can choose language and manual type. Klick on that link.
For user guide, you will often find more than one option, for example for the FB700 a Rigid Media Guide and a User Guide
Select what you want to download and click
Check your download folder
Double-click on the appropriate PDF-File