How to replace or install the drum unit HLL3210CW HLL3230CDW
After replace the drum unit you need to reset the printer, please check page 3 for more detail
To replace or install the drum unit, follow the steps listed below:
1. Make sure the machine is turned on.
2. Open the top cover until it locks in the open position.
If you've just used the machine, its internal parts will be extremely hot. Wait for the machine to cool down before touching any
internal parts.
3. Remove the drum unit and toner cartridge assembly for the color you're replacing (the color that needs to be replaced will be
shown on the machine's display).
We recommend placing the drum and toner assembly on a clean, flat surface with disposable paper underneath it in case you
accidentally spill or scatter toner.
4. Push down the green lock lever and remove the toner cartridge from the drum unit.
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