Won't print after scanning

The Lexmark X2670 can only connect to a computer using a USB cable. Without it, your computer won't be able to communicate to the printer for printing, copying and scanning. If you lost the USB cable, you may purchase one from any retail stores. The USB cable used for your model has Type A plug on one end and the other end has Type B plug. You may also contact Lexmark Technical Support Center for additional assistance.
I hope this information has been helpful.

Make sure the Lexmark OCR scan software is installed on your laptop. The software is available only on the installation disc that came with your printer. If you still haven't installed the software on your computer and you don't have the installation disc, please contact Lexmark Technical Support Center to request for one.
If you were able to scan documents before using your Lexmark printer, it could be just a slight communication issue. A quick fix for most communication errors can be achieved by resetting the printer and/or rebooting the PC. Simply disconnect the printer from your computer (if USB connected)> reboot your pc > unplug and re-plug the printer into the power source to reset it. When the printer turns on, reconnect it to your computer (if USB connected). Then try to print again once the computer fully recognizes the USB connection or when the WiFi light on the printer turns solid green (if WiFi connected.).

The first thing I would do is remove the program from your computer, then download the latest drivers from lexmark: visit
http://support.lexmark.com/index?locale=en&page=product&productCode=LEXMARK_X5470&segment=SUPPORT&userlocale=EN_US&frompage=null#1
choose your version of OS ( OS 10 X, 10.3, etc) and download the file.
Before you install the software in your computer, I would disconnect the printer's USB cable, and wait for the installation program to prompt you to connect it.
I believe that will take care of your problem.

Your firewall could be blocking some printer communications. Make sure to allow full access to all Lexmark and printer communications in the program rules/permissions for your firewall. For more information on how to configure the settings for your firewall, visit the Lexmark website at http://bit.ly/iNwkNs.

How is your printer connected to your computer, wireless or hardwired with a USB cable? If wireless, check the status of the WiFi light on the printer (green = connected to a network, orange = not connected to a network). Try to turn off/on your printer. Doing this usually fixes minor communication issues. This article in the Lexmark website might also help resolve your scan problem: No Communications Error When Trying to Print or Scan.

Dell don't do drivers for Mac systems as they onlt support windows. If you can find the Lexmark X1150 drivers it is at least worth a try but that model has been discontinued.

try uninstall the driver and insatll it after that reboot and connect printer!

First I try to uninstall the printer, it didn't work, so I reinstall the the printer anyway, it worked for one print only.
As second attempt I disconnected the printer completely, turned the PC off, and after few minutes on again. Uninstalled printer.
Reconnected the cables again, install the printer - it works well!

Connect what two. Computer and printer. Try reinstalling the printer. The cable could be defaulty and If reinstalling the printer does not work, I'll put my money on the cable being defaulty, happens all the time. Exchange it for a working cable. Let me know how it goes.

Cynthia