Lexmark PRO4000C, 90P3000 manual Resolving intermittent wireless communications issues

Troubleshooting 171

5Click the Ports tab, and then locate the selected port.

The selected port has a check mark beside it in the Port column.

6If the Description column of the selected port indicates that it is a USB port, then scroll through the list and select the port with Printer Port in the Description column. Check the printer model in the Printer column to make sure you select the right printer port.

7Click OK, and then try to print again.

MAKE SURE BIDIRECTIONAL COMMUNICATION IS ENABLED

Note: This solution applies to Windows users only.

1Click , or click Start and then click Run.

2In the Start Search or Run dialog, type control printers.

3Press Enter, or click OK.

4Right‑click the printer, and then select Properties or Printer properties from the menu.

5Click the Ports tab.

6Click the box next to Enable bidirectional support if it is not already checked.

7Click Apply > OK, and then try to print again.

Resolving intermittent wireless communications issues

You may notice that your printer works for a short time and then stops working, although apparently nothing has changed on your wireless network.

Many different issues can interrupt network communications, and sometimes more than one problem exists at the same time. Try one or more of the following:

DISCONNECT FROM ALL VPNS WHEN ATTEMPTING TO USE THE WIRELESS NETWORK

Most Virtual Private Networks (VPNs) allow computers to communicate with only the VPN and no other network at the same time. Disconnect from the VPN before installing the driver on the computer or before running the wireless setup on the computer.

To check if the computer is currently connected to a VPN, open your VPN Client software and check your VPN connections. If you do not have a VPN Client software installed, then check the connections manually using the Windows VPN Client.

If you would like to have the ability to connect to your local network and to a VPN at the same time, then request the system support person for the VPN to allow split tunneling. Be aware that some organizations will not allow split tunneling due to security or technical concerns.

TURN OFF THE ACCESS POINT (WIRELESS ROUTER) AND TURN IT BACK ON

Wait one minute for the printer and computer to reestablish the connection. This can sometimes refresh network connections and resolve connectivity issues.