Brother HL-S7000DN - Manual (Page 142)

Troubleshooting
136
6
Jam F OP Tray (paper jam in the optional output tray)
6
If the LCD shows Jam F OP Tray, a paper jam occurred in the optional output tray. Follow these steps:
a Open the back cover of the optional output tray.
b
Using both hands, gently pull the jammed paper out.
c
Close the back cover of the optional output tray.