Brother FAX 1840C - Manual (Page 166)

TROUBLESHOOTING AND ROUTINE MAINTENANCE 12 - 22
10
Pack the printed materials in the original carton as shown below.
Do not pack the used ink cartridges in the carton.
11
Close the carton.
If you are returning your machine to Brother as part of the
Exchange Service, pack only the machine. Keep all separate
parts and printed materials to use with your “Exchange”
machine.
(FAX-1840C and
FAX-1940CN only)
(MFC-3240C and
MFC-3340CN only)