39 ï EnglishDark Spots or MarksThere are dark spots or marks thatappear in a random pattern on thepage.ï The paper path may becontaminated with toner.ï The drum cartridge may bedefective.ï The fuser may be defective.ï The transfer roller may bedefective.Unfused or Partially FusedImageThe printed image is not fully fused tothe paper and easily rubs off.ï The paper may be damp.ï Heavy or unusual paper may be inthe tray.ï The printer may be located in anenvironment with extremetemperature or humidity.ï The fuser may be defective.TroubleshootingPrint Problems (cont.)