Samsung Xpress C480 Series - Image Quality Problems Diagnosis; Vertical Black Line and Band Issues; Vertical White Line Issues

4.AlignmentandTroubleshooting
4.2.3.Imagequalityproblems
1)VerticalBlackLineandBand
•Description:Straightthinblackverticallineoccursintheprintedimage.
CauseandCheckPointSolution
Checkifthesurfaceofthechargerollerisscratchedor
contaminated.
Replacetheimagingunitandtestagain.
Checkiftherearegroovesonthecircumferenceofthe
OPCdrum.
Replacetheimagingunitandtestagain.
CheckifthecleaningbladeisdamagedReplacetheimagingunitandtestagain.
Checkifpapertransferbeltisdamagedorcontaminated.ReplacetheITBunitandtestagain.
2)VerticalWhiteLine
•Description:Whiteverticalvoidsintheimage.
CauseandCheckPointSolution
CheckiftheLSUwindoworinternallensesofLSUis
contaminated.
CleantheLSUwindowwithrecommendedcleaner(IPA).
Cleanthewindowwithacleancottonswab.Ifdirtis
insidetheLSU,replacetheLSU.
Checkiftherearescratchesonthecircumferenceofthe
OPCdrum.
Replacetheimagingunitandtestagain.
Checkiftherearescratchesonthecircumferenceofthe
developingroller.
Replacethecorrespondingtonercartridgeandtestagain.
Checkifpapertransferbeltisdamagedorcontaminated.ReplacetheITBunitandtestagain.
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