Brother DCP-9055CDN Service Manual page 285

(5) Remove the Screw pan (S/P washer) M3.5x6 screw to remove the NCU shield cover from
the NCU unit.
Screw pan (S/P washer) M3.5x6
(6) Remove the two Taptite cup S M3x6 SR screws to remove the NCU PCB ASSY from the
NCU shield plate.
Taptite cup S M3x6 SR
Fig. 3-136
Fig. 3-137
3-104
NCU shield cover
NCU unit
NCU PCB ASSY
NCU shield plate
Confidential