Brother HL-4200CN - Manual (Page 58)

3 - 10 LOADING PAPER AND USABLE PAPER TYPES
Load A5 Paper in the Paper Tray/Changing the Paper Size from A5
Loading A5 Paper
Follow the steps below to load A5 paper into the paper tray.
Load paper into the optional Tray Module the same way.
1
Gently pull out the paper tray until it stops.
2
Hold the paper tray with both hands as you lift the
front slightly and pull it completely out of the printer.
Place the paper tray on a flat surface.
3
Move the side paper guides to their outermost
positions.