Please check the following points to solve the problem:
NOTE: Illustrations shown below are from a representative product and may differ from your Brother machine.
- The back cover of the machine is not closed completely. Close the back cover of the machine.
- The duplex tray is not installed or not installed correctly. Re-install the duplex tray. Duplex tray is located in the rear of the Brother machine.
To help us improve our support, please provide your feedback below.