The printer posts an error code 31.6x – Reinstall missing or unresponsive imaging unit (IU), where “x” denotes any numbers from 0 to 6, as listed among the following examples: 31.60, 31.61, 31.62, 31.63, 31.64, 31.65, or 31.66.
A 31.6x error code may be caused by either of the following:
- A non-genuine (third party) imaging unit or smart chip communication issues in the printer.
- A bent imaging unit chip contact pins caused by the installation of non-genuine (third party) imaging unit.
Note: The use of third-party supplies or parts can affect warranty coverage. Should you find the supplies (i.e., toner cartridge and/or imaging unit) are non-genuine (third party), please contact your point of purchase for questions about, or replacement of, the supply. Third party supplies are NOT covered under Lexmark warranty.