Action Yes No
Step 5
a Make sure the MPF gearbox is free of debris.
b Check the gears and spring of the MPF gearbox for wear or damage.
Are they free of damage?
Go to step 6. Replace the MPF
gearbox. See
“MPF
gearbox removal” on
page 174.
Step 6
Does the error remain?
Contact the next level
of support.
The problem is solved.
Understanding the printer messages
Cartridge, imaging unit mismatch [41.xy]
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:
• 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.
Cartridge low [88.xy]
You may need to order a toner cartridge. If necessary, press on the printer control panel to clear the message and
continue printing.
Cartridge nearly low [88.xy]
If necessary, press on the printer control panel to clear the message and continue printing.
Cartridge very low, [x] estimated pages remain [88.xy]
You may need to replace a toner cartridge very soon. For more information, see the “Replacing supplies” section of
the User’s Guide.
If necessary, press
on the printer control panel to clear the message and continue printing.
4514
Diagnostic information
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