Brother HL-L8350CDWT - Manual (Page 208)

Troubleshooting
201
6
Settings Reset
6
This operation will reset all the machine's settings back to the defaults that were set at the factory.
a
Disconnect the network cable from the machine; otherwise the network settings (such as IP address) will
not be reset.
b
Press a or b ( + or -) to choose Reset Menu. Press OK.
c
Press a and Cancel at the same time. Press OK after Settings Reset appears.
d Press a to choose Reset.
e Press a to choose Yes. The machine will restart automatically.