Brother HL-7050 Service Manual page 203

CHAPTER 5 PERIODIC MAINTENANCE
<Replacement Procedure>
(1) Open the top cover of the printer.
(2) Pull out the drum unit assembly (drum
unit with the toner cartridge). (Fig.5-1)
!
CAUTION:
It is recommended to place the drum unit assembly on a piece of disposable paper or cloth in
case you accidentally spill or scatter toner.
(3) While pressing the Blue lock lever, pull
the toner cartridge out of the drum unit
assembly. (Fig.5-2)
(4) Unpack the new drum unit,
and remove the protective materials.
(5) Install the toner cartridge into the new
drum unit until you hear it lock into place
with a click. When the toner cartridge is
installed correctly, the Blue lock lever is
lifted automatically. (Fig.5-3)
(6) Put the drum unit assembly back in the printer.
(7) Reset the page counter referring to the instructions supplied with the new drum unit.
(8) Close the front cover.
5-2
Fig. 5-1
Fig. 5-2
Fig. 5-3