In resolving this issue, follow steps below:
Remove the parallel card.
Upgrade the printer firmware.
Re-install the parallel card back to the printer after a successful upgrade.
Note: This is only an issue on the firmware level prior to FW5.2. After the firmware upgrade to level xxxxx.052.024 or later, updating the firmware will work normally without removing the parallel card.
Refer to Downloading the latest Lexmark printer firmware for the steps in checking, downloading and updating the printer firmware.
If the issue persists, search for more information related to this issue or contact support for further assistance.