Oki C530dn User Manual page 91

10. Finally, close the top cover and press down firmly so that the
cover latches closed.
Important!
If you need to return or transport your printer for any
reason, please make sure you remove the image
drum unit beforehand and place it in the bag provided.
This is to avoid toner spillage.
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– C330/C530 Replacing Consumables and Maintenance