Brother MFC-8460N Servise Manual page 262

(36) Slide the Sub duct to the direction of the arrow 36b while pressing the three Hooks and
remove the Sub duct from the Air duct.
Filter
36a
(37) Remove the Filter from the Air duct.
NOTE: The filter is dirt. Be careful when disassembling or assembling it.
Air duct
36b
Hooks
Hook
Fig. 6-25
Filter
Fig. 6-26
6-15
<Back side>
Sub duct
Air duct
Confidential