Brother HL 3070CW - Manual (Page 162)

Troubleshooting
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Take out all four drum unit and toner cartridge assemblies.
IMPORTANT
• We recommend that you place each drum unit and toner cartridge assembly on a clean, flat surface with
a sheet of disposable paper or cloth underneath it in case you accidentally spill or scatter toner.
• To prevent damage to the printer from static electricity, DO NOT touch the electrodes shown in the
illustration.
• Handle the toner cartridges carefully. If toner scatters on your hands or clothes, wipe or wash it off with
cold water at once.
• To avoid print quality problems, DO NOT touch the shaded parts shown in the illustrations.