e-STUDIO163/203 TROUBLESHOOTING © December 2005 TOSHIBA TEC5 - 202) Background foggingFig. 5-2Defective area Step Check items PrescriptionDensity reproduction 1 Check the reproduction of the imagedensity.Adjust the density.Background reproduction 2 Check the background reproduction. Adjust the background.Printer section 3 Check test print image (07-113). Go to step 4 if there is any problemon image.Scanner 4 Are the original glass and CIS unitdirty?Clean them.Auto-toner 5 Is the auto-toner sensor normal? Check the performance of the auto-toner sensor and readjust.6 Is the toner supplied normally? Check the motor and circuits.High-voltage transformer(Main charger / Developerbias)7 Is the high-voltage transformer out-put defective?Adjust the output, or replace thetransformer.Developer unit 8 Is the contact between the drum anddeveloper material normal?Adjust the doctor-sleeve gap andpolarity.Developer material/Toner/Drum9 Using the specified developer mate-rial, toner and drum?Use the specified developer material,toner and drum.10 Have the developer material anddrum reached their PM life?Replace the developer material anddrum.11 Is the storage environment of thetoner cartridge 35°c less withoutdew?Use the toner cartridge stored in theenvironment within specification.Drum cleaning blade 12 Is the drum cleaned properly? Check the pressure of the drumcleaning blade.Toner dusting 13 Is toner heaped on the seal of thedeveloper unit?Remove the toner and clean thedeveloper unit.Feeding direction
