Brother HL-7050N - Manual (Page 187)

6 - 19 TROUBLESHOOTING
HL7050_US_UG_FM5.5
JAM D (paper jam in the Duplex unit)
1 Use both hands to slowly pull the jammed paper from the paper
exit of the Duplex unit.
Figure 6-15
2 Use both hands to gently open the Duplex unit cover.
JAM D