Brother HL-4200CN - Manual (Page 125)

PAPER JAMS 6 - 10
Paper Jams in the 2 Tray Module
Follow the procedure below to remove the jammed paper.
1
Starting with the bottom tray, pull out each tray until
you find the jammed paper.
Paper in the tray module feeds to the printer from
the front of the trays, therefore paper jammed in the
lower tray can block the upper tray of the module or
the paper tray in the printer, preventing you from
opening them. Look for the jammed paper
sequentially, starting with the lowest tray.
2
Remove all the jammed and/or creased paper from
the tray.
3
If there is jammed paper inside the printer, pull it out
carefully to avoid tearing it.