Brother 4000CN - Manual (Page 84)

4-13
4.
Gently lift the end paper guide to move
it, and insert the pins at the bottom of
the guide in the holes (indicated by the
mark) corresponding to the paper
size that you want to load. Make sure
that the end guide is properly inserted
into the appropriate holes for the paper
size.
Look
6
Only a small amount of movement of
the end paper guide can make
automatic paper size detection
impossible. If this occurs, move the end
paper guide all the way to its outermost
position again, then realign it with the
appropriate paper size mark.
A5
B5
5.
Grip the A5 spacer, gently lift it up
while pulling it forward and remove it
from the tray.
6.
Align the A5 spacer with the paper
guide slot and push it down until it
clicks.