Brother HL-1240 - Manual (Page 64)

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6.
Clean the primary corona wire inside the drum unit by gently sliding the blue tab to
the right end and left end several times. Return the tab to the home position before
reinstalling the drum unit assembly.
Fig. 3-10 Cleaning the primary corona wire
!
Caution
Make sure that you return the tab to the home position (▲ mark position) before
reinstalling the drum unit assembly into the printer or printed pages may have
vertical stripes.




7.
Re-install the drum unit assembly into the printer and close the front cover.
Fig 3-11 Re-install the drum unit assembly
Home Position (▲)