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Replacing supplies A
You must replace supplies when the machine indicates that the life of the supply is over. You can
replace the following supplies yourself:
Using non-Brother supplies may affect the print quality, hardware performance, and machine
reliability.
NOTE
• The drum unit and toner cartridge are two separate parts.
• The drum unit and toner cartridge are two separate supplies. Make sure both are installed. If
the toner cartridge is placed in the machine without the drum unit, the message Drum ! may
be displayed.
Routine maintenance A
Toner cartridge Drum unit
See Replacing the toner cartridges on page 81.
Order No. TN-331BK
1
, TN-331C
1
, TN-331M
1
,
TN-331Y
1
, TN-336BK
1
, TN-336C
1
, TN-336M
1
,
TN-336Y
1
, TN-339BK
2
, TN-339C
2
, TN-339M
2
,
TN-339Y
2
1
Available for MFC-L8600CDW and MFC-L8850CDW
2
Available for MFC-L9550CDW
See Replacing the drum unit on page 90.
Order No. DR-331CL
Belt unit Waste toner box
See Replacing the belt unit on page 96.
Order No. BU-320CL
See Replacing the waste toner box on page 101.
Order No. WT-320CL