Brother DCP-9040CN Service Manual page 217

(13) Release the Hook to remove the Speaker hold spring from the Speaker holder.
(14) Remove the Speaker ASSY from the Speaker holder.
Speaker hold spring
Speaker holder
(15) Remove the three bind B M3x8 Taptite screws, and then remove the Top cover USB front
ASSY.
Top cover USB front ASSY
13b
Speaker ASSY
Fig. 3-101
<Bottom>
Fig. 3-102
3-85
Hook
13a
Taptite, bind B M3x8
Joint cover ASSY
Confidential