Konica Minolta bizhub C25 bizhub C25 Printer / Copier / Scanner User Guide - Page 296

Symptom Cause There are The media transfer toner roller is dirty. smudges on the back side of the page The media path is (whether or dirty with toner. not it has One or more of the been toner cartridges are duplexed). defective. One or more of the imaging units is defective. Solution Clean the media transfer roller. If you think the transfer roller should be replaced, contact Technical Support with the error information. Print several blank sheets and the excess toner should disappear. Remove the toner cartridges and check for damage. If it is damaged, replace it. Remove the imaging units and check for damage. If it is damaged, replace it. Abnormal The laser lens is dirty. Clean the laser lens. areas (white, A toner cartridge may Remove the toner cartridges with the black, or be defective. color causing the abnormal image. color) Replace it with a new toner cartridge. appear in a regular pat- One or more of the Remove the imaging units and check tern. imaging units is for damage. If it is damaged, replace defective. it. Image defects. The laser lens is dirty. Clean the laser lens. A toner cartridge may Remove the toner cartridges and be leaking. check for damage. If it is damaged, replace it. A toner cartridge may Remove the toner cartridge with the be defective. color causing the abnormal image. Replace it with a new toner cartridge. One or more of the Remove the imaging units and check imaging units may be for damage. If it is damaged, replace defective. it. Solving Problems with Printing Quality 10-37