- 47 -Printing TroublesTroubleshooting12 IndexMaintenancePrint quality is poorMemoz If the problem is not solved using the following methods, contact your designated help desk.Symptom Cause Troubleshooting ReferencepagesWhite stripe in perpendiculardirection.Paper feeding directionLED head is unclean. Wipe LED head with a softtissue paper.page 77Low toner. Replace the toner cartridge. page 55Deposit of foreign substances. Replace the image drum. page 57Window film of image drum isunclean.Wipe window film with a softtissue paper.-Image drum has not been setcorrectly.Please set the image drumcorrectly.page 57Printing is blurred inperpendicular direction.Paper feeding directionLED head is unclean. Wipe LED head with a softtissue paper.page 77Low toner. Replace the toner cartridge. page 55Paper not supported. Use recommended paper. BasicPrinting is light. The toner cartridge is notinstalled correctly.Re-install the toner cartridge. page 55Low toner. Replace the toner cartridge. page 55Paper is moist. Use paper stored at appropriatetemperature and humidity.-Paper not supported. Use recommended paper. BasicPaper not supported.Type and thickness setting ofpaper is inappropriate.Correct [Media Weight] inthe operation panel to theappropriate value. Or, change[Media Weight] to a thickervalue than the present value.AdvancedRecycled paper is used. Correct [Media Weight] inthe operation panel to theappropriate value. Or, change[Media Weight] to a thickervalue than the present value.AdvancedPrinting is blurred in someparts. Solid printing will resultin the appearance of white dotsor lines.Paper contains moisture. Dry it. Use paper stored at appropriatetemperature and humidity.BasicInappropriate settings of [PaperBlack Setting] or [Paper ColorSetting].Change the value of [PrinterSetting]>[Paper Black Adjust]or [Paper Color Setting].AdvancedStripes in perpendiculardirection.Paper feeding directionThere are dents on the imagedrum.Replace the image drum. page 57Low toner. Replace the toner cartridge. page 55