Brother MFC-8220 Service Manual page 109

(5) Release the four hooks, and then remove the handset holder upper.
Handset holder upper
Hooks
Handset holder lower
(6) Release the hook, and then remove the hook PCB ASSY.
Handset holder lower
Fig. 4-54
Hook PCB ASSY
Hook
Fig. 4-55
4-31
SERVICE MANUAL
Hooks
MFC-8220