Brother HL HL-3070CW User Manual page 116

Routine Maintenance
c
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 flammable substances, any type of spray or any organic solvent/liquids containing alcohol or
ammonia to clean the inside or outside of the printer. Doing this may cause a fire or electrical shock. See
Cleaning on page 128 for how to clean the printer.
Be careful not to inhale toner.
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