Try this approach:1. Uninstall your existing printer driver. On your computer, go to Start menu > Programs > Lexmark X5600 Series folder > Tools > Uninstall. After the uninstall process, reboot your pc when prompted.2. When your pc turns on, check if your Windows 7 is running on 32-bit or 64-bit operating system. On your computer, go to Start menu > right-click on Computer > click on Properties. Take note of the System Type.3. Use the link below to download and re-install the corresponding printer driver for your operating system:- Lexmark X5650 Printer Driver for Windows 7 32-bit
- Lexmark X5650 Printer Driver for Windows 7 64-bit
Simply follow the instructions on your computer screen to complete the installation.4. To re-install the Lexmark OCR scan software, insert the printer software installation CD in your pc CD-ROM drive.5. Click on Install > Install Additional Software > select the Lexmark OCR Scan Software > continue with normal installation steps.
Then try to create a PDF or Scan and Edit text (OCR) to verify that the problem is fixed.
If that doesn't help, please contact Lexmark Technical Support Center at 1-800-539-6275 for additional assistance.