Overview
The Fax function option does not appear when pressing the pause button on the printer control panel. This happens when the printer is on a certain level of firmware and configured with Common Access Card (CAC) authentication. See the table below to verify the printers and firmware levels affected.
| Printer models | If… | Then… |
| X792 | The Firmware code is .P286… | Hitting the pause button gives a beep, but no fax function displays. |
| The Firmware code is .P290 or .P294… | The fax function displays and will allow you to send a fax. |
| X95x – X950, X952, and X954 | The Firmware code is .P294… | No fax function displays. |
| The Firmware code is .P291… | The fax function displays and will allow you to send a fax. |
Recommended Action
Lexmark recommends users to update the printer’s firmware to LHS23.MR.P297. See section below.
Firmware Update Steps
Step 1: Check Device Base Code Firmware Level
Obtain the MFP's current device firmware level. You may use either Options 1 or 2 for ways to determine printer firmware code levels.
Option 1
Print the Menu Settings Page. Do this from the printer's operator panel:
| Step | Action |
| 1 | Press the Menu button on the Control Panel. |
| 2 | Select Reports. |
| 3 | Print the Menu Settings Page.
Note: The printer should read ‘Printing Menu Settings Page’ and the menu settings page(s) should print out.
|
| 4 | Check the code level under the Device Information section on the menu settings pages. |
Option 2
Access the printer's Embedded Web Server (EWS). Before you begin, a functional network installation (wired or wireless – not a local USB installation) is required for access to the web server of any Lexmark network printer.
| Step | Action |
| 1 | Determine the print server's IP address within the printer/MFP. |
| 2 | Launch your preferred web browser application (e.g., Firefox, Safari, Internet Explorer). |
| 3 | In the address field after the http://, enter the printer's IP address (e.g., http://192.168.1.5 or http://169.254.1.42). |
| 4 | Click on Reports. |
| 5 | To check for the code level, click on Device Information. |
Step 2: Identify Fix Firmware for your MFP
Please contact Lexmark Technical Support to obtain the LHS23.MR.P297 software code recommended to fix your problem.
IMPORTANT! This firmware was specifically created to address only the issues specified in this article. If your printer is not listed and not experiencing the error, DO NOT update the firmware.
Step 3: DLE’s and Special Firmware
Certain functions or applications may require special firmware.
WARNING! If you are unsure, make this information known to the Lexmark Technical Support Agent and do not attempt to update the MFP firmware.
Any MFP with any one of these following downloadable language emulators (DLE) may require special firmware versions:
• Bar Code• IPDS• PrintCryption• Forms• Prescribe• ImageQuick
Step 4: Need Help Updating Firmware?
After you have contacted Lexmark for the firmware, extract the .fls file to a known, easy-to-find directory, and for an extensive list of the firmware update procedures.
NOTE: Follow any of the update procedures.
RECOMMENDATION: The printer's web page has an Update Firmware feature that is easy to use.
Still need help?
Please contact Lexmark Technical Support if you need additional assistance.
NOTE: When calling for support, you will be asked for your machine/model type and serial number (SN).
Please call from near the printer in case the technician on the phone asks you to perform a task involving the printer.
LEGACY ID: TE555