Brother MFC-9420CN - Manual (Page 148)

Troubleshooting and routine maintenance
C - 23
C
1
Turn off the machine’s power switch.
Unplug the telephone line cord first, and
then unplug the power cord from the AC
power outlet. Open the back cover of the
machine.
2
Clean the registration roller and the
paper pick-up roller with a dry soft,
lint-free cloth to prevent paper jams.
3
Clean the transfer roller unit and the
transfer roller guide with a dry soft,
lint-free cloth to prevent paper jams.
WARNING
■
Be careful you do not break the
actuator while cleaning the registration
roller and paper pick-up roller.
■
Make sure you do not put too much
pressure on the registration roller and
paper pick-up roller. This could
damage them and cause poor print
quality.