Lexmark 840dn - W B/W Laser Printer Troubleshooting Manual

1, Lexmark 840dn - W B/W Laser Printer Lexmark™ W840 Troubleshooting Guide Online technical support Technical support is available on our Lexmark Web site at www.lexmark.com. Checking an unresponsive printer If the printer is not responding, first make sure: • The power cord is plugged into the printer and a properly grounded e…

2, Page Protect is set to On Set Page Protect to Off from the Setup Menu. For more information, see the Menus and Messages Guide. Job prints from the wrong tray or on the wrong paper or specialty media Make sure the Paper Size and Paper Type specified in the printer driver match…

3, Solving 2000-sheet drawer problems The elevator tray does not raise when the loading door is closed, or the elevator tray does not lower when the door is opened and the elevator button is pushed Check the following: • The printer is properly attached to the 2000- sheet drawer. • The print…

4, Blank pages feed into the output bin Load the correct type media for your print job, or change the Paper Type to match the type of media loaded. For more information, see the Menus and Messages Guide. Original documents misfeed in the ADF • Adjust the guides toward the media until they lig…

5, Toner fog or background shading appears on the page • Check the print cartridge to make sure it is installed correctly. • The Toner Darkness setting may be too dark. Change the Toner Darkness setting in the Quality Menu. • Verify the environment is Class B. • Replace th…

6, The job prints, but the top and side margins are incorrect • Make sure the Paper Size setting in the Paper menu is correct. • Make sure the margins are set correctly in your software application. Ghost images appear • Make sure the Paper Type setting in the Paper menu is correct. �…