- 106 -Other Issues3 3. TroubleshootingItem Symptom Cause/RemedyConfiguration tool Unable to find a printer. If the [Don't allow exceptions] check box is selected onthe [General] tab of Windows Firewall, you cannot searchfor a printer in a segment that is connected to anotherrouter. Only printers within the same segment as the printercan be searched.When you cannot find a printer, enter the printer name(arbitrary) and IP address in [Printer] > [Add or RemovePrinter] and click [Add].Image Quality IssuesMemo● If the following information does not solve your issues, contact your dealer.Symptom Point to check Remedy ReferenceVertical lines appear.Paper feed directionThe LED heads are dirty. Wipe the LED heads with a softtissue paper.page 129The toner is low. Replace the toner cartridge. page 114The image drum is damaged. Replace the image drum. page 119Foreign materials may be presenton the image drum.Replace the image drum. page 119The light-shielding film of theimage drum is dirty.Wipe the film with a soft tissuepaper.-The image drum is not installedproperly.Install the image drum properly. page 119Printed images arefading vertically.Paper feed directionThe LED heads are dirty. Wipe the LED heads with softtissue paper.page 129The toner is low. Replace the toner cartridge. page 114The paper is unsuitable. Use supported paper. page 59Printed images are light. The toner save is enabled. Change the toner save settings. -The toner cartridge is not installedproperly.Install the toner cartridge properly. page 114The toner is low. Replace the toner cartridge. page 114The paper is moist. Use paper stored in propertemperature and humidityconditions.page 59The paper is unsuitable. Use supported paper. page 59The paper is unsuitable.The settings of media type andweight are incorrect.Press the <ENTER> buttonand select [Menus] > [TrayConfiguration] > the paper trayconfiguration you are using, andthen select the proper valuesfor [Media Type] and [MediaWeight]. Or, select a larger valuefor [Media Weight].page 59The paper is recycled.The media weight setting isunsuitable.Press the <ENTER> buttonand select [Menus] > [TrayConfiguration] > the paper trayyou are using, and then select alarger value for [Media Weight].page 59