Dirt might exist in the paper path. Try printing several blank sheets. If the sam problem remains,the print head cartridge, transfer roll cartridge or fuser unit might be old or damaged. Check the print head cartridge, transfer roll cartridge and fuser unit and replace them as necessary.

• To see how to replace the print head cartridge, click here.
• To see how to replace the transfer roll cartridge, click here.
• To see how to replace the fuser unit, click here.