Brother HL-7050N - Manual (Page 162)

ROUTINE MAINTENANCE 5 - 13
HL7050_US_UG_FM5.5
4 Wipe the outside of the printer with a soft cloth to remove dust.
Figure 5-17
5 Remove anything that is stuck inside the paper tray.
Figure 5-18
6 Put the paper tray back in the printer, and then close the
multi-purpose tray.
7 Plug the printer power cord back in, and then turn the printer
power switch back on.