Brother DCP-8070D Service Manual page 219

(28) Remove the four bind B M4x12 Taptite screws from the Joint cover.
(29) Release all Hooks of the Joint cover and lift up the front side of the Joint cover.
(30) Pull out the Joint cover's Bosses to the front side.
Bosses
30
<Left side>
Taptite bind B M4x12
Hooks
(31) Slide the Sub duct to the direction of 32b while pressing the Hook to the direction of 32a
and remove the Sub duct from the Air duct.
31a
29
Fig. 4-62
Air duct
31b
31c
Sub duct
Hook
Fig. 4-63
4-40
Joint cover
Taptite bind B M4x12
Hooks
Hooks
<Front side>
Taptite bind B M4x12
<Back side>
Confidential