General Troubleshooting 4-79Paper Path and Media-Based ProblemsFor paper path and media-based problems, first check the displayed error codes usingthe Error Code Definition Table beginning on page 3-9 to help determine where theerror is occurring. Run paper path diagnostics to help eliminate problems with printercomponents.Media-Based Problems1. Check that the correct type of media is being used, for information on the correctmedia type and sizes refer to the Paper Tips page, which is printable from theprinters Control Panel Menu.2. Ensure the printer is operating under the right environmental conditions, seeChapter One for more information.3. Ensure the correct weight of paper is being used.4. Ensure that envelopes are of an acceptable size and oriented with the flap up forTray 1 and the flap down for Trays 2, 3, and 4.5. Ensure that the correct media is in the correct media tray. The paper guidesindicate to the printer the size of media being used. Ensure that the media guidesin the tray are set correctly.6. Inspect the paper for bent, torn or folded corners.7. Check to ensure no small pieces of paper are in the paper path.8. Run the paper path status test in service diagnostics to ensure all sensors areoperating correctly.9. Try printing from a fresh, unopened ream of paper.Paper-Pick Errors - Trays 2, 3, and 4Paper-pick errors occur when the media in the media tray mispicks or the printerdouble-picks two or more sheets of paper.1. Inspect the paper path for obstructions.2. Ensure that the side guides are set correctly by sliding the guide gently againstthe media.3. Try printing from a fresh, unopened ream of paper.4. Flip over the media in the tray.5. Ensure the pick rollers for Trays 2, 3, and 4 are installed correctly.6. Clean the pick roller using the cleaning procedures. Paper dust can coat the pickroller and affect its ability to grip the paper and pull it out of the tray. Also cleanthe transport rollers if they are visibly dirty. Refer to page 7-4 for proper cleaningprocedures.