Lexmark PRO4000C, 90P3000 Cannot delete documents from the print queue, Cannot print through USB

Troubleshooting 141

RECONNECT THE PRINTER POWER SUPPLY

1Turn off the printer.

Note: Make sure the printer is not in Sleep mode. Press and hold for three seconds to turn off the printer.

2Unplug the power cord from the wall outlet, and then pull out the power cord from the power supply.

3After one minute, reconnect the power cord into the power supply, and then plug the power cord into the wall outlet.

4Turn on the printer.

Cannot delete documents from the print queue

If you have jobs stuck in the print queue and cannot delete them to get other jobs to print, then the computer and printer may not be communicating.

RESTART THE COMPUTER AND TRY AGAIN

REMOVE AND RECONNECT THE USB CABLE CONNECTED TO YOUR PRINTER

Cannot print through USB

If the "Before you troubleshoot" checklist does not solve the problem, then try one or more of the following:

CHECK THE USB CONNECTION

1Check the USB cable for any obvious damage. If the cable is damaged, then use a new one.

2Firmly plug the square end of the USB cable into the back of the printer.

3Firmly plug the rectangular end of the USB cable into the USB port of the computer.

The USB port is marked with .

Note: If you continue to have problems, then try another USB port on the computer. You may have connected to a defective port.

MAKE SURE THE USB PORT IS ENABLED IN WINDOWS

1Click , 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.

4Click the plus sign (+) beside Universal Serial Bus controllers.

If USB Host Controller and USB Root Hub are listed, then the USB port is enabled.

For more information, see the computer documentation.