Samsung ProXpress M387 Series - Page 154

4.AlignmentandTroubleshooting
3)HorizontalBlackBand
Description:Darkofblurryhorizontalstripesoccurintheprintingperiodically.
CheckandcauseSolution
Badcontactsofthevoltageterminalstotonersystem.CleaneachvoltageterminaloftheCharge,Developing
rollerandTransferroller.(removethetonerparticlesand
paperparticles)
Therollersofdevelopermaybestained.
•OPCDrum=76mm
•ChargeRoller=34.5mm
•DevelopingRoller=37mm
Replacethelasertonercartridgeorimagingunit.
4)BlackandWhitespot
Description:Darkorblurryblackspotsoccurperiodicallyintheprinting.
CheckandcauseSolution
Ifdarkorblurryblackspotsoccurperiodically,therollersin
theImagingunitmaybecontaminatedwithforeignmatte
orpaperparticles.
•OPCDrum=76mm
•ChargeRoller=34.5mm
•DevelopingRoller=37mm
CleaneachvoltageterminaloftheCharge,Developing
rollerandTransferroller.(removethetonerparticlesand
paperparticles)
Iffadedareasorvoidsoccurinablackimageatintervalsof
76mm,theOPCdrumsurfaceisdamaged.
Replacethelasertonercartridgeorimagingunit.
Ifablackimageispartiallybroken,thetransfervoltageis
abnormalorthetransferroller’slifehasexpired.
•Ifthetransferroller’slifeisexpired,replaceit.
•Cleantheinsideofthesetagainstthepaperparticles
andforeignmatterinordernottocausethetrouble.
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