- 290 -7. TroubleshootingVertical White Lines AppearCause Solution ReferenceThe LED head is dirty. Wipe the LED head with a soft tissuepaper. Cleaning the LED Head (User'sManual)The toner is low. If "Toner Low" or "Toner Empty.Replace with new Toner Cartridge."appears, replace the toner cartridge.Replacing the Toner Cartridges(User's Manual)The lightproof film of the image drumis dirty.Wipe the lightproof film with a softtissue paper.-The image drum is not installedproperly.Install the image drum properly. Replacing the Image Drum(User's Manual)The ADF document glass is dirty. Clean the ADF document glass. Cleaning the Document Glass(User's Manual)Cleaning the Document FeedRollersThere may be foreign objects in theimage drum.Replace the image drum. Replacing the Image Drum(User's Manual)Printed Images are Fading VerticallyCause Solution ReferenceThe LED head is dirty. Wipe the LED head with a soft tissuepaper. Cleaning the LED Head (User'sManual)The toner is low. If "Toner Low" or "Toner Empty.Replace with new Toner Cartridge."appears, replace the toner cartridge.Replacing the Toner Cartridges(User's Manual)The paper is unsuitable. Use recommended paper. Loading Paper (User's Manual)
