Brother HL-L9300CDW Service Manual page 355

(8) Release the lock of the Fuser cover lock lever L/R to open the Fuser cover ASSY.
(9) Slide the Fuser cover ASSY in the direction of the arrow 9a and remove it to the front.
Fuser cover ASSY
Fuser cover lock lever R
Fig. 7-7
9a
9b
Fig. 7-8
7-6
Main body
Fuser cover
lock lever L
<Back side>
Main body
Fuser cover ASSY
<Back side>
Confidential