Check the following points to solve the problem:
NOTE: Illustrations shown below are from a representative product, and may differ from your Brother machine.
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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.
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The drum units or toner cartridges may not be installed correctly. Check that the drum units or toner cartridges are installed correctly.
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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)
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Make sure that the media type setting in the printer driver matches the type of paper you are using.
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Make sure that the two grey levers inside the back cover are in the up positions (1).
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The drum unit may be damaged. Install a new drum unit as follow:
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Click here to print the chart. [345KB/ PDF]
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Compare your printed document with the printed chart to identify the colour of the drum unit causing the problem.
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Replace the drum unit of the colour. Click here to see how to replace the drum unit.