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Lexmark MS621

Lexmark MS621

843.01 and 842.01 Error Messages Appear when Using Pharmacy Label on the ADF

Affected products



in the title section above.

Issue description

When copying/scanning a document through the automatic document feeder (ADF) using a Legal sized pharmacy label (or any label with thin adhesive strips), the printer posts an 843.01 or 842.01 error message.

Pharmacy Label stuck on the ADF backside calibration strip


It was found that a portion of the pharmacy label had peeled off and attached itself to the backside calibration strip. Every time the scanner ran through calbration, the back side calibration strip would not move and the machine posted the error message.


There is currently no solution when using any type of media which has something that peels off and attaches to the ADF backside calibration strip.

Should the issue occur, make sure to remove the label that is stuck on the ADF backside calibration strip and perform a power-on reset (POR) to clear the error message.

Still need help?

If you need additional assistance, please close this browser tab or go to the Lexmark support site, type your printer model and locate

Get in Touch with Lexmark! for contact information.
When calling for support, you will need the following:

  • Affected printer model/s
  • Printer serial number

Please be near the product/s described in this article to expedite the support process and reduce callbacks.


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