Brother HL-5240 - Manual (Page 81)

6. Routine Maintenance
73
Cleaning
Clean the outside and inside of the printer regularly with a dry, lint-free cloth. When you replace the toner
cartridge or the drum unit, make sure that you clean the inside of the printer. If printed pages are stained with
toner, clean the inside of the printer with a dry, lint-free cloth.
Cleaning the outside of the printer
CAUTION
Use neutral detergents. Cleaning with volatile liquids such as thinner or benzine will damage the surface of
the printer.
DO NOT use cleaning materials that contain ammonia.
a
Turn off the printer power switch and then unplug the printer.
b Pull the paper tray completely out of the printer.