Brother MFC-J2320 Service Manual page 236

(4) Release the Hooks and the Boss on the DX paper guide ASSY, slide it in the
direction of the arrow, and remove the DX paper guide ASSY and the Inner chute
ASSY from the Frame base.
Hook
Assembling Note: After mounting the Inner chute ASSY and the DX paper guide
ASSY to the Frame base, confirm that the Registration actuator operates normally.
Inner chute ASSY
Boss
Fig. 3-122
3-106
DX paper guide ASSY
Hook
Frame base
Hook
Confidential