Brother HL-4140CN - A Routine Maintenance; Replacing the Consumable Items

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A
Replacing the consumable items A
The following messages appear on the LCD in the Ready mode. These messages provide
advanced warnings to replace the consumable items before they reach the end of their life. To
avoid any inconvenience, you may want to buy spare consumable items before the machine stops
printing.
Routine maintenance A
Toner cartridge Drum unit
See Replacing a Toner cartridge on page 62.
Model Name: TN-320BK, TN-325BK, TN-328BK,
TN-320C, TN-325C, TN-328C, TN-320M, TN-325M,
TN-328M, TN-320Y, TN-325Y, TN-328Y,
See Replacing the drum unit on page 68.
Model Name: DR-320CL
Belt unit Waste toner box
See Replacing the belt unit on page 74.
Model Name: BU-300CL
See Replacing the waste toner box on page 80.
Model Name: WT-300CL