Samsung ML-451 Series - Background; Ghost; Stains on back of page

4.AlignmentandTroubleshooting
Thetonerlevelisnotevenontheimagingunitrollerdue
tothebadblade.
Replacetheimagingunit.
8)Background
Description:Lightdarkbackgroundappearsinwholeareaoftheprinting.
CheckandcauseSolution
Doesrecyclepaperbeused?Usetheproperpapers.
ThelifeoftheimagingunithasbeenexpiredReplacetheimagingunit.
TheoutputfromtheHVPSisabnormal.ReplacetheHVPSboard.
9)Ghost
Description:Ghostoccursat94.2mmintervalsoftheOPCdrum.
CheckandcauseSolution
Thehighvoltageterminaliscontaminated.Cleanthehighvoltageterminals.
ThelifeoftheimagingunithasbeenexpiredReplacetheimagingunit.
Thelifeofthetransferrollerhasbeenexpired.Replacethetransferroller.
10)Stainsonbackofpage
Description:Thebackofthepageisstained.
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