Brother MFC-J3520 Service Manual page 216

(5) Release the wiring of the Power supply harness.
(6) Remove the one screw (TAPTITE CUP S M3x8) from the Lower cover.
(7) Release the two Hooks on the Lower cover and remove the Lower power supply
frame from the Lower cover.
TAPTITE CUP S M3x8
<Rear>
Lower cover
Lower power supply frame
Power supply harness
(8) Release the two Hooks and remove the Power supply shield from the Lower power
supply frame.
Power supply shield
Fig. 3-111
Fig. 3-112
3-96
Hooks
<Front>
Hook
Hook
Lower power supply frame
Confidential