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10. Tilt your left hand up to lift the frame so the numbered grid is visible, as shown. Use your right hand to rotate
the drum while you look for marks or debris on the drum surface.
Use the column numbers next to the drum roller to find the mark. For example, a dot in column 2 on the
Drum Dot Check Sheet would mean that there is a mark in the “2” region of the drum.
11. Wipe the surface of the drum gently with a dry cotton swab until the mark on the surface comes off.
NOTE
DO NOT clean the surface of the photosensitive drum with a sharp object or any liquids.
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