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Lexmark CS728

Lexmark CS728

Lexmark CS/X72x and XC41xx: How to Locate the Serial Number, TLI, and Machine Type

Affected Products:

Single-Function: C4150, CS720, CS725, CS727, CS728

Multifunction: CX727, XC4143, XC4150, XC4153

Issue Description:

When contacting Lexmark Technical Support or arranging warranty service, you will need to know your printer's machine (model) type and serial number. This article explains how to find information such as the serial number (SN), top-level indicator (TLI), and machine type on the printer.

Locating the Label:

  1. Open the printer's front cover.

  2. Look for a sticker where the information above is located. See the location pointed by the

    red arrow

    on the right-hand image.


    The printer's serial number is also listed on the menu settings page that you can print using the printer.


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