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Troubleshooting
Understanding the printer messages
Toner cartridge messages
Cartridge, imaging unit mismatch [41.xy]
‑ On
‑ On
If the printer control panel light sequence matches the light sequence in the preceding illustration, then do the following:
1 Check if both the toner cartridge and imaging unit are MICR (Magnetic Ink Character Recognition) or non-MICR
supplies.
Note: For a list of supported supplies, see the “Ordering supplies” section of the User's Guide or visit
www.lexmark.com.
2 Change the toner cartridge or imaging unit so that both are MICR or non‑MICR supplies.
Notes:
• MICR supplies are supported only in select printer models.
• Use a MICR toner cartridge and imaging unit for printing checks and other similar documents.
• Use a non-MICR toner cartridge and imaging unit for regular print jobs.
Troubleshooting 110