Brother DCP-L8400CDN Service Manual page 309

(5) Remove the two Screw bind M3x8 screws from the Main PCB plate.
Release the two Hooks and remove the Main PCB plate from the Main body.
Main PCB insulation sheet
Main PCB plate
Screw bind M3x8
(6) Release all the wiring from the PF cable rack.
(7) Remove the Taptite cup S M3x8 SR screw from the PF cable rack. Release the six Hooks
and slide the PF cable rack in the direction of the arrow and remove it from the Main body.
Hook
Hook
Hook
PF cable rack
Taptite cup S M3x8 SR
<Left side>
Main body
<Left side>
Fig. 3-200
7a
7b
Hook
Main body
Fig. 3-201
3-145
Hook
Confidential