Lexmark MX431 / MS431 office laser family error codes
Lexmark's compact mono office printers and MFPs in the MX431 and MS431 family show paper-jam, supply-recognition, and user-attendance messages that are common in shared office fleets.
Built around official Lexmark user-guide and service-manual material for the MX431 and closely related mono office models. Exact code behavior can vary a little by print-only versus MFP model and installed options, but the main paper-jam and supply messages stay close across the family.
Brand
Lexmark
Family
MX431 / MS431 office laser family
Guides in this family
6
More Lexmark families
Start with a code, message, or symptom to narrow this family quickly.
29.xx
Low
Packing material is still present on one or more installed supplies.
29.xx shown on the control panel as a user-attendance or supplies message.
31.40
Medium
The toner cartridge is missing or not responding correctly.
31.40 shown on the control panel as a reinstall missing or unresponsive cartridge error.
31.60
Medium
The imaging unit is missing or not responding correctly.
31.60 shown on the control panel as a reinstall missing or unresponsive imaging-unit error.
Paper jam in trays
Medium
Paper is jammed in the tray feed path.
Paper jam message shown on the control panel, often tied to tray-feed guidance in the user guide.
Paper jam in the duplex unit
Medium
Paper is jammed in the duplex path.
Paper jam message shown on the control panel during two-sided printing.
Paper jam in the automatic document feeder
Medium
The original document jammed in the ADF path.
ADF-related jam message shown during copy or scan handling.