Follow the steps applicable for your case to resolve the issue:

• Case 1: Colored spots at 94 mm (3.7 in.) intervals
• Case 2: Colored spots at 29 mm (1.1 in.) intervals

Case 1: Colored spots at 94 mm (3.7 in.) intervals

1. If the issue is not resolved after printing a few pages, the drum may have foreign material, such as glue from a label, stuck on the drum surface. Clean the drum unit.
   > Click here to see how to clean the drum unit.
2. Install a new drum unit.
   > Click here to see how to replace the drum unit.

Case 2: Colored spots at 29 mm (1.1 in.) intervals

1. Identify the color causing the issue and install a new toner cartridge.
2. To identify the color of the toner cartridge and replace toner cartridge, follow the steps below:

    

   1. > Click here to print the chart. [345KB/ PDF]
   2. Compare your printed document with the printed chart to identify the color causing the issue.
   3. Replace the toner cartridge of the color.
      > Click here to see the details of how to replace the toner cartridge.