Brother Facsimile Equipment MFC7420 - Manual (Page 103)

Confidential 5 -3 2
(2) Release the three hooks to remove the speaker cover.
(3) Release the one hook to remove the speaker hold spring.
Speaker cover
Hooks
Hook
1
2
3
4
4
1
2
2
Hook
Speaker hold spring
Hook
Machine
Machine
Speaker hold spring