Brother HL-3450CN Service Manual page 203

(2) Holding the handle located on the top
of the drum cleaner, push it
backwards.
(3) Remove the drum cleaner by lifting it
out. (Fig.6-25)
(4) Clean the area where the drum cleaner
is mounted. (Fig.6-26)
(5) Install a new drum cleaner into the
printer.
When installing the drum cleaner, be sure to put it into the printer correctly, indicated by a
click.
Sequence of Assembling
(1) Install the cleaner cover.
(2) Close the top cover.
(3) Press the power button to turn on the printer.
(4) Upon completion of the warming-up process.
(5) Press any of the Menu buttons (+, -, Set or Back) to take the printer Off Line.
(6) Press + or – until "RESET MENU" appears.
(7) Press Set to proceed to the next menu level, and then press + or – until "PARTS LIFE"
appears.
(8) Press Set, and then press + until "240K KIT" appears.
(9) Press Set, and then press Go. The printer is now in the READY state.
Drum cleaner
CAUTION
6-31
HL-3450CN SERVICE MANUAL
Fig. 6-26
Fig. 6-27