Solution to the “Replace MK” Message on Kyocera Printers

Background

Kyocera ECOSYS PA4000wx printers may display a “Replace MK” message during normal use. On some printers, however, the message may persist even after the Maintenance Kit has been replaced, preventing normal printing.

This article explains how to resolve the “Replace MK” message on the Kyocera ECOSYS PA4000wx, with practical troubleshooting steps for service engineers.

Figure 1: Message “Replace MK”

Solution

Printer Model: Kyocera ECOSYS PA4000wx High-Speed Monochrome Laser Printer

Issue: The printer displays a “Replace MK” message. Normally, the message should disappear after the Maintenance Kit is replaced. However, on some printers, the message persists even after a new Maintenance Kit has been installed, preventing normal printing.

Solution: Follow the steps below to reset the life counter and clear the message.

Step 1: Enter Maintenance Mode

From the printer’s home screen, enter [10871087] to access Maintenance Mode. Then press the Menu button on the printer.

Figure 2: Enter Maintenance Mode

Step 2: Reset the Life Counter

From the menu, navigate to Adjust/Maint. → Service Setting → Drum, then select Yes.

Figure 3: Reset the Life Counter

Step 3: Save the Settings and Restart the Printer

Press the OK button to save the settings. The printer will restart automatically. Once it restarts, the “Replace MK” message should disappear, and the printer should resume normal operation.

Figure 4: Save the Settings

Conclusion

Replacing the Maintenance Kit should normally clear the “Replace MK” message. If the message persists after installing a new Maintenance Kit, enter Maintenance Mode and reset the Life Counter to resolve the issue.

If you have any questions, please contact your sales representative or send your queries to info@zhono.com.

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