Brother HL-L2395DW Online User's Manual page 549

NOTE
DO NOT clean the surface of the photosensitive drum with a sharp object or any liquids.
13. Push the toner cartridge firmly into the drum unit until you hear it lock into place.
Make sure you put the toner cartridge in correctly or it may separate from the drum unit.
14. Install the toner cartridge and drum unit assembly back into the machine.
15. Close the front cover of the machine.
16. Press to turn the machine on.
Related Information
• Clean the Machine
• Improve the Print Quality
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