Oki B721 User Manual

Also see for B721: User manual User manual

Contents

Oki B721 User Manual Manual pdf 114 page image

- 114 -Image Quality Issues4 Troubleshooting●● Image Quality IssuesMemo● If the following information does not solve your issues, contact your dealer.Symptom Cause Remedy ReferencePageVertical lines appear.Paper feed directionThe LED heads are dirty. Wipe the LED heads with a softtissue paper.page 134The toner is low. Replace the toner cartridge. page 122The image drum is damaged. Replace the print cartridge. page 122Foreign materials may be presenton the print cartridge.Replace the print cartridge. page 122The light-shielding film of the printcartridge is dirty.Wipe the film with a soft tissuepaper.–The print cartridge is not installedproperly.Install the print cartridge properly. page 122Printed images arefading vertically.Paper feed directionThe LED heads are dirty. Wipe the LED heads with a softtissue paper.page 134The toner is low. Replace the toner cartridge. page 122The paper is unsuitable. Use supported paper. page 38Printed images are light. The toner save is enabled. Change the toner save settings. AdvancedThe toner cartridge is not installedproperly.Install the toner cartridgeproperly.page 122The toner is low. Replace the toner cartridge. page 122The paper is moist. Use paper stored in propertemperature and humidityconditions.page 42The paper is unsuitable. Use supported paper. page 38The paper is unsuitable.The settings of media type andweight are incorrect.Press the button and select[Menus] > [Tray Configuration]> the paper tray configurationyou are using, and then select theproper values for [Media Type]and [Media Weight]. Or, select alarger value for [Media Weight].page 33Recycled paper is used.The media weight setting isunsuitable.Press the button and select[Menus] > [Tray Configuration]> the paper tray configuration youare using, and then select a largervalue for [Media Weight].page 33Printed images arepartially faded. Spotsand lines appear.The paper is too moist or dry. Use paper stored in propertemperature and humidityconditions.page 42[Paper Black Setting] isimproperly configured.Press the button and select[Menus] > [Print Adjust], andthen change the value for [PaperBlack Setting].–