CHECK THAT YOUR COMPUTER IS ABLE TO ACKNOWLEDGE USB ACTIVITY ON THE USB PORT

Open the Device Manager to check if it has activity whenever a USB device is connected to a USB port:

1Click Cannot print and there is a firewall on the computer, or click Start and then click Run.

2In the Start Search or Run box, type devmgmt.msc.

3Press Enter, or click OK. The Device Manager opens.

4Watch the Device Manager window while connecting a USB cable or another device to the USB port. The window refreshes when Device Manager recognizes the USB connection.

•If there is activity on Device Manager but none of the previous solutions worked, call Customer Support.

•If there is no activity on Device Manager, there may be a problem with your computer and its USB support. The computer must recognize the USB connection in order for installation to work.

Cannot print and there is a firewall on the computer

Third-party (non-Microsoft) firewalls can interfere with wireless printing. If the printer and computer are configured correctly, and the wireless network is working, but the printer will not print wirelessly, then a firewall could be the problem. If there is a firewall (other than the Windows firewall) on the computer, try one or more of the following:

•Update the firewall using the most recent update available from the manufacturer. Refer to the documentation that came with your firewall for instructions on how to do this.

•If programs request firewall access when you install the printer or try to print, make sure you allow those programs to run.

•Temporarily disable the firewall and install the wireless printer on the computer. Re-enable the firewall when you have completed the wireless installation.

Communication with printer lost when connected to Virtual Private Network (VPN)

You will lose your connection to a wireless printer on your local network when connected to most Virtual Private Networks (VPNs). Most VPNs allow users to communicate with only the VPN and no other network at the same time. If you would like to have the ability to connect to your local network and to a VPN at the same time, the system support person for the VPN must enable split tunneling. Be aware that some organizations will not allow split tunneling due to security or technical concerns.

Wireless troubleshooting

•“Resetting the wireless settings to factory defaults” on page 159

•“Cannot print over wireless network” on page 159

•“Wi-Fi indicator light is not lit” on page 162

•“Wi-Fi indicator light is green but the printer does not print (Windows only)” on page 162

•“Wi-Fi indicator light is still orange” on page 163

•“Wi-Fi indicator light is blinking orange during installation” on page 164

•“Wireless print server not installed” on page 168

•““Communication not available” message displays when printing wirelessly” on page 169

Troubleshooting

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Lexmark 4444, Pro900, 30E, 301, 90T9105 manual Cannot print and there is a firewall on the computer, Wireless troubleshooting
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301, Pro900, 30E, 4444, 90T9105 specifications

The Lexmark 30E, 301, and S500 series are renowned for their efficiency, reliability, and innovative technologies, making them a preferred choice for small to medium-sized businesses. Each of these models caters to a variety of printing requirements while maintaining high standards in performance and usability.

The Lexmark 30E is recognized for its compact design and versatility. As a monochrome laser printer, it excels in producing sharp, high-quality text documents. With a print speed that can reach up to 40 pages per minute, it is ideal for environments with moderate to high-volume printing needs. The printer is equipped with a robust processor and has a print resolution of up to 1200 x 1200 dpi, ensuring that documents are presented clearly and professionally. Additionally, it features automatic duplex printing, which not only saves on paper costs but also contributes to enhancing overall workplace efficiency.

The Lexmark 301 series builds on this foundation while offering enhanced capabilities and features. This series includes multifunction capabilities, which allow users to print, scan, copy, and fax from a single machine. With an intuitive touchscreen interface, operation is streamlined, making it accessible for all users. It supports mobile printing solutions, enabling users to print directly from smartphones or tablets, a feature that is increasingly crucial in today’s mobile-centric workplaces. The Lexmark 301 series uses advanced imaging technologies, ensuring high-quality output, vibrant graphics, and reliable document consistency.

The Lexmark S500 series stands out with its sophisticated color printing abilities and high-performance features. This series is engineered for higher volume printing, with options for both single and multi-function models. The S500 offers color print speeds that rival many monochrome printers, making it efficient for businesses that require rich, vivid color documents. It features Lexmark's award-winning imaging technology, which guarantees outstanding color accuracy and detail. Advanced security features, such as secure printing and user authentication, are also integrated, ensuring sensitive information remains protected.

In conclusion, the Lexmark 30E, 301, and S500 series printers are designed to meet the diverse needs of modern businesses. With their focus on speed, quality, and user-friendly interfaces, these printers not only enhance productivity but also provide cost-effective solutions for managing office tasks. Whether it’s a small office needing basic printing capabilities or a larger enterprise requiring multifunction devices, these Lexmark models deliver exceptional performance and reliability.
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