Brother HL-L3230CDW Wireless Compact Printer - Manual (Page 291)

CAUTION
We recommend placing the toner cartridge and drum unit assemblies on a clean, flat surface with
disposable paper underneath it in case you accidentally spill or scatter toner.
IMPORTANT
To prevent damage to the machine from static electricity, DO NOT touch the electrodes shown in the
illustration.
3. Clean the corona wire inside the drum unit by gently sliding the green tab from left to right and right to left
several times. Repeat this for all the corona wires.
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