TroubleshootingSamsung ElectronicsService Manual 7-57.2 Solution of Image ProblemCause Sequence of TreatmentDriver Installation Problem.Toner cartridge contacts dirty or not makinggood contact or empty Toner Cartridge(when printing a single color image)PTB cartridge contacts dirty or not makinggood contact or Faulty PTB unitLSU cable harness plugs not fitted properlyor faulty LSU.Toner transfer problemTry printing a Demo Page.Check that the operating system driver wasinstalled correctly.Check and clean the toner contacts.Re-seat the Toner Cartridge.Replace the Toner cartridgeCheck and clean the PTB contacts.Re-seat the PTB Unit.Replace PTB UnitCheck the connectors on the LSU Unit andmain PWA are properly inserted.Replace the LSU Unit, cables or MAIN PWAas requiredCheck all HV contacts and cables.Replace the HVPS.- No ImageCause Sequence of TreatmentOPC Drum BIAS contacts dirty or not mak-ing good contact.Charge Voltage of the OPC Drum is unstable.Clean Drum contacts..Replace the Toner Cartridge.Replace the HVPS Board.- Completely Black ImageCause Sequence of TreatmentContamination of the internal mechanism of thetoner cartridgeOPC Drum surface contaminated or damaged.PTB Unit belt is contaminated or damaged.Fuser Unit is contaminated.Replace the Toner Cartridge.Replace the Toner Cartridge.Replace the PTB Unit Belt.Clean or replace the Fuser Unit.- White Spots / Black Spots / Colored Spots
