Check the following points to solve the problem:

NOTE: Illustrations shown below are from a representative product, and may differ from your Brother machine.

1. To get the best print quality, we suggest using the recommended paper. Check that you are using paper that meets our specifications. Click here to see details of the recommended paper.
   
   
2. The drum units or toner cartridges may not be installed correctly. Check that the drum units or toner cartridges are installed correctly.
   
   
   • Click here to see how to install the drum unit.
   • Click here to see how to install the toner cartridges.
   
   
3. Check the machine's environment. Conditions such as low humidity and low temperatures may cause this print quality problem.
   Temperature: 10ºC to 32.5ºC (50ºF to 90.5ºF)
   Humidity: 20% to 80% (without condensation)
   
   
4. Make sure that the media type setting in the printer driver matches the type of paper you are using.
   
   
5. Make sure that the two gray levers inside the back cover are in the up positions (1).
   
   
   
   
   
6. The drum unit may be damaged. Install a new drum unit as follow:
   
   
   1. Click here to print the chart. [345KB/ PDF]
   2. Compare your printed document with the printed chart to identify the color of the drum unit causing the problem.
   3. Replace the drum unit of the color. Click here to see how to replace the drum unit.