This can be an issue with the following check the comb electrode this is also know as the charge grid is it dirty damaged clean this unit replace comb electrode if damaged is the cleaning blade dirty is the drum being cleaned correctly by the cleaning blade is the drum past its life replace are the mirrors dirty clean them the above will resolve your issue
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This can be an issue with the following check the comb electrode this is also know as the charge grid is it dirty damaged clean this unit replace comb electrode if damaged is the cleaning blade dirty is the drum being cleaned correctly by the cleaning blade is the drum past its life replace are the mirrors dirty clean them
the above will resolve your issue