Please check the following points.

• Was the seal of the toner cartridge pulled out?

• The toner cartridge might be old or damaged. We recommend you replace the toner cartridge. To see how to replace the toner cartridge, click here.

• Remove the paper stack from the tray, fan it, and put it back in the tray.

• The power supply might be defective. If the problem continues, contact your dealer or Brother Customer Service.