Brother MFC-3420C - Manual (Page 166)

TROUBLESHOOTING AND ROUTINE MAINTENANCE 13 - 19
Cleaning the MFC printer platen
■
Be careful not to touch the paper feed star wheels and flat cable,
and encoding film.
■
Be sure to unplug the MFC from the AC power outlet before
cleaning the printer platen.
To clean your MFC printer platen, wipe it with a soft lint free cloth
that is dry.
Paper Feed Star Wheel
Do NOT Touch!
Encode Film
Do NOT Touch!
Flat Cable
Do NOT Touch!
Printer Platen
Clean Here