Brother HL 4570CDWT - Manual (Page 122)

Routine Maintenance
116
5
c
Wipe the outside of the machine with a dry, lint-free cloth to remove dust.
d Remove anything that is stuck inside the paper tray.
e Wipe the inside of the paper tray with a dry, lint-free cloth to remove dust.
f Put the paper tray back in the machine.
g Connect interface cables and then plug the machine back in. Turn on the power switch.