Brother MFC-J2320 Service Manual page 197

(4) Release the five Hooks marked with ▲ on the Head cover to remove it.
Note: When removing the Head cover, do not touch the Inclination adjuster ring.
Head cover
Hooks
Head/carriage
unit
Inclination
adjuster ring
(5) Unlock the Connector on the Carriage PCB ASSY and disconnect the Head flat
cable.
Head flat
cable
Pull here to unlock
Head flat
cable
Fig. 3-64
Connector
Fig. 3-65
3-67
Hooks
Carriage PCB ASSY
Confidential