Brother MFC-8440 User Manual page 185

10
Pack the drum unit and toner cartridge assembly, telephone line
cord, AC cord and printed materials in the original carton as
shown below:
If you are returning the MFC to Brother as part of the Exchange
Service, pack only the MFC. Keep all separate parts to use with
your 'Exchange' machine.
11
Close the carton and tape it shut.
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