Brother MFC-425CN - Manual (Page 40)

3 - 20 FRONT PANEL SETUP
NC9100h_FM6.0
Restoring the Network Settings to Factory Default
To restore all network settings of the internal Print/Scan server to
factory default, please follow the steps below.
(For MFC-425CN)
1 Make sure the machine is not operating, then disconnect all the
cables from the machine (except power cable).
2 Press Menu/Set , 5 , 0 .
3 Press 1 to select Reset .
4 Press 1 to select Yes .
5 The machine will re-start, re-connect cables once this is
complete.
(For DCP-315CN)
1 Make sure the machine is not operating, then disconnect all the
cables from the machine (except power cable).
2 Press Menu .
3 Press ▲ or ▼ to select 3.LAN .
Press Set .
4 Press ▲ or ▼ to select 0.Factory Reset .
Press Set .
5 Press ▲ to select 1.Reset .
6 Press ▲ again to select 1.Yes .
7 The machine will re-start, re-connect cables once this is
complete.