Brother HL-5240 Service Manual page 67

CHAPTER 3 PERIODIC MAINTENANCE
!
CAUTION:
Make sure that you put in the toner cartridge properly or it may separate from the drum unit.
(7) Clean the primary corona wire inside the drum unit by gently sliding the blue tab from right
to left and left to right several times.
!
CAUTION:
Be sure to return the tab to the home position (▲). If you do not, printed pages may have a
vertical stripe.
(8) Put the drum unit and toner cartridge assembly back in the printer. Close the front cover.
Fig. 3-9
Fig. 3-10
3-6
Home position
Confidential