Question about Lexmark T642 Laser Printer

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SE Menu for Lexmark T640

Hi there,

I was hoping someone knows how to access the SE Menu on a Lexmark T640 printer. I need to reset the NVRAM.

Thank you

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  • Filard Jul 31, 2008

    I actually found my own answer. You have to scroll to the TCP/IP setting, then press the left and right buttons at the same time. This will bring you to the SE menu. In there you will find the NVRAM.


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Its a two key combo. Try the following;

Press and Right arrow and menu together and power on printer OR
Press and Right arrow and GO together and power on printer

Posted on Sep 11, 2008

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Lexmark T642, I forgot my Admin password

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Forgot admin password

Hi, What you need to do is to reset the NVRAM. That will also delete your network information and passwords you set for the printer. Please see steps below: Method 1 (from Standard Menu): - Network/Ports -> press LEFT ARROW button and RIGHT ARROW button simultaneously -> Select NVRAM -> Select "Reinit NVRAM" Method 2 (with Config Menu): - Press CHECK button and RIGHT ARROW button while POR -> Select "Factory Default" -> Select "Restore Network" -> Press CHECK button If you have questions about your Lexmark printer, please feel free to contact us at

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Lexmark t644 how reset nvram

Entering Configuration Menu
1. Turn off the printer.
2. Press and hold and .
3. Turn on the printer.
4. Release the buttons when Performing Self Test displays.
The message CONFIG MENU displays on the top line of the operator panel.
Then Go to Factory Defaults
This setting enables a user to restore all the printer settings to the original factory settings. Selections are Restore Base and Restore Network. Network does not appear unless you have a network printer. The following settings are not changed:
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This resets the non-critical areas of the user NVRAM

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There is an internal counter that prompts this message. There is software to reset the counter called MPTool. But why complicate things when it can be reset manually using the following steps.

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This link explains error 900 on a Lexmark printer. It includes troubleshooting steps in trying to resolve the issue.

If problem persists, contact the manufacturer.

I hope this works for you!


"Understanding explains better..."

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I need a manual for lexmark lase printer t640 or


You can download the complete user manual from the manufacturer's website by clicking this link
  • You'll require Adobe PDF Reader installed on your PC to view this manual. If it is not already installed on your PC, download it free from:
Hope this solves your problem. Thanks for using FixYa

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