Samsung M2070F - Page 104

4.AlignmentandTroubleshooting
3)HorizontalBlackBand
Description:Darkofblurryhorizontalstripesoccurintheprintingperiodically.
CheckandcauseSolution
Badcontactsofthevoltageterminalstotonercartridge.CleaneachvoltageterminaloftheCharge,Developing
andTransferroller.(removethetonerparticlesandpaper
particles)
Therollersofdevelopermaybestained.
—OPCDrum=62.9mm
—ChargeRoller=26.7mm
—DevelopingRoller=33.7mm
Replacethetonercartridge.
4)BlackandWhitespot
Description:Darkorblurryblackspotsoccurperiodicallyintheprinting.
CheckandcauseSolution
Ifdarkorblurryblackspotsoccurperiodically,therollersin
thetonercartridgemaybecontaminatedwithforeignmatte
orpaperparticles.(Chargeroller:26.7mminterval/OPC
drum:62.9mminterval)
CleaneachvoltageterminaloftheCharge,Developing
rollerandTransferroller.(removethetonerparticlesand
paperparticles)
Iffadedareasorvoidsoccurinablackimageatintervalsof
62.9mm,theOPCdrumsurfaceisdamaged.
Replacethetonercartridge.
Ifablackimageispartiallybroken,thetransfervoltageis
abnormalorthetransferroller’slifehasexpired.
•Ifthetransferroller’slifeisexpired,replaceit.
•Cleantheinsideofthesetagainstthepaperparticles
andforeignmatterinordernottocausethetrouble.
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