Brother DCP-L8400CDN Service Manual page 347

(3) Remove the Taptite pan B M3x10 screw from the High-voltage power supply PCB ASSY.
Release the eight Hooks and remove the High-voltage power supply PCB ASSY from the
Main body.
Hook
Hook
Taptite pan B M3x10
Main body
Hook
A view
High-voltage power supply PCB ASSY
<Right side>
<A view>
Main body
Hook
Taptite pan B M3x10
<Front side>
Hook Hook
High-voltage power supply PCB ASSY
Fig. 3-267
3-183
Confidential