Brother HL-3075CW User Manual page 110

Routine Maintenance
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Push down the green-labeled lock lever (1) and take the toner cartridge out of the drum unit.
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1
WARNING
DO NOT put a toner cartridge into a fire. It could explode, resulting in injuries.
DO NOT use cleaning materials that contain ammonia, alcohol, any type of spray, or any type of flammable
substance to clean the outside or inside of the machine. Doing this may cause a fire or electrical shock. See
Cleaning on page 127 for how to clean the printer.
Be careful not to inhale toner.
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