Brother HL 1650 - Manual (Page 127)

4-6
☛ ☛ ☛ ☛ 3.
Unscrew the two screws that secure the PCB access plate. Remove the plate.
Fig. 4-4
☛ ☛ ☛ ☛ 4.
Remove the two screws securing the Network board cover plate and remove
the plate.
Fig. 4-5
☛ ☛ ☛ ☛ 5.
Unpack the Network board.