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Troubleshooting
WorkCentre 6400 Multifunction Printer
User Guide
210
Toner Smudges Appear on the Back of the Page
Probable Causes Solutions
The media transfer roller is dirty. Check the transfer roller for toner accumulation.
Replace if necessary.
The media path is dirty with toner. Print several blank sheets and the excess toner should
disappear.
Foreign material has entered the printer. Check the transfer belt for foreign material or
damage.
Check the fuser for foreign material.
One or more of the imaging units may be defective. Remove the imaging units one at a time, and check
for damage. If it is damaged, replace it.