5
Pull off the protective cover.
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6
Put the new toner cartridge firmly into the drum unit until you hear it lock into place. If you put it in properly, the lock lever will lift automatically.
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CAUTION icon 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.
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CAUTION icon CAUTION
 
Be sure to return the tab to the home position (Bsymbol.utri) (1). 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.
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