T52x ‘Network 54 Error’ and how to solve it.


A “Network 54 Error” is reported by the printer at power on, or the printer loses or changes its network settings over time. Affected units may experience one or both of these symptoms intermittently.

How to cure this issue:

  1. Update the failing adapter/printer’s firmware to level 3.20.30 or higher.
    • The firmware can be found on the Lexmark web site in the Firmware section of the Drivers and Downloads page. The download contains the file necessary to update the network firmware as well as a Readme file with detailed instructions for updating the firmware. In addition to the instructions in the Readme file it is also possible to update the firmware using the printer’s web page. Follow these steps to update using the web page:
      • Open a web browser.
      • Enter the IP address of the printer in the address field.
      • This will bring the printer’s web page.
      • Click on the “Configuration” link on the left-hand side of the page.
      • Click on the “Update Print Server Firmware” link.
      • Click on the “Browse” button and locate the firmware file that was downloaded. Note that this file will have a “.psw” extension.
      • Click on the Submit button.
      • When the process is completed, the adapter will reset.
  2. If the printer continues to have problems it may be necessary to reset the NVRAM using the instructions below:
    • Power the printer off.
    • Hold down the > Menu, Select and Go buttons on the printer’s operator panel.
    • Power the printer back on while holding down the buttons.
    • Continue holding the buttons until you see “Performing Self Test / Restoring Factory Defaults” on the display. Then release the buttons.
    • The NVRAM has now been reset.
  3. It may also be necessary to manually set the MAC speed on the printer if there continues to be problems.
  4. If problems persist after performing the above steps or it is not possible to update the printer firmware then it may be necessary to physically replace the adapter or system board.
  5. Contact your next level of support if you have difficulty with these steps.

It is recommended that anyone with the affected products should update to the 3.20.30 level of code immediately. If an affected print server cannot be updated via the network or parallel port, then the print server will have to be replaced.

Clearing up those T64X hazy and foggy prints.


If most of your pages are coming out with a fog or haze of toner on them it generally means that you have a defective toner cartridge, but that is not always the case. In certain situations it could mean there is a damaged printhead cable. If replacing the toner doesn’t get you the print quality you seek, try replacing this instead.

One way you can confirm this issue without inspecting the cables is to
switch the Print Resolution setting from 300 or 600 dpi to 1200 dpi, and vice versa. If
switching between 300/600 dpi and 1200 dpi improves the appearance of the printed
pages, replacing the laser cable assembly will likely correct the issue.

NOTE: This can be a useful diagnostic tool in cases where you are walking a customer
through diagnosing this issue or otherwise cannot visually inspect the printhead cables.

You don’t have to be Tony Stark to reset those Optra S & T printers.


Here’s a couple pointers on quick button resets for the the Optra T & S machines: (excluding the T640)

– If the printer is stuck in DEMO mode, hold down the STOP and SELECT buttons upon power up.
– To get the printer in DIAGNOSTIC mode, hold down the GO and RETURN buttons upon power up.