Brother DCP-9045CDN Service Manual page 127

(5) Push both sides of the Separation pad ASSY inwards and put its Pins into the Paper tray.
Note:
Check that the Separation pad ASSY pivots up and down smoothly by pushing it gently.
Pin
Separation pad ASSY
(6) Install the Paper tray into the machine.
(7) After replacing the Paper feeding kit, reset the counter. (Refer to
Function" in this chapter.)
5a
5b
Fig. 2-56
Fig. 2-57
2-33
<Front>
Pin
5a
Paper tray
"2.3 Parts Life Reset
Paper tray
Confidential