Samsung CLX-8640ND - Page 422

4.Troubleshooting
2)Horizontalwhitebandanddarkband
StepSectionCheckitemResultAction
1ThesurfaceoftheOPCdrumisscratched.YesReplacethedrumunit.
2Dirtyontheoutside.YesClean.
3Contactterminalsmakegoodconnection
betweeneachdrumunitandmachine.
NoCleancontactterminals.
4
DrumUnit
Developingbiascontactterminalmakes
goodconnection.
NoCleancontactterminalandcheck
terminalposition.
5Originalisdamagedordirty.YesChangeoriginal.
6Scannerglasswhitesheetisdirty.YesCleanorreplacethepad.
7Originalglassisdirty.YesWipethesurfacecleanwithasoft
cloth.
8
Scanner
CheckCCDlenssurfaceagainst
contaminationorforeignobjects.
YesCleanthecontaminatedpart.
CAUTION
Fragileparts!
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