Brother HL-5340D User Manual page 111

Replacing the drum unit
IMPORTANT
While removing the drum unit, handle it carefully because it may contain toner.
Every time you replace the drum unit, clean the inside of the printer.See Cleaning on page 105.
When you replace the drum unit with a new one, you need to reset the drum counter by completing the
following steps:
a
Press the front cover release button and then open the front cover.
b
Press and hold down the Go for about 4 seconds until all the LEDs light up. Once all four LEDs are lit,
release Go.
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Routine Maintenance
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