HP LaserJet 4250 Service Manual - Page 411

Table 7-35 Scattered lines Table 7-36 Blurred print Possible cause Recommended action(s) The media does not meet specifications or is not stored correctly. 1 Turn over the stack of media in the tray. Also try rotating the media 180°. 2 Check the media for type and quality. Replace the media if it does not meet specifications, and advise the customer to use the HPrecommended media and to store it correctly. See Media specifications. The operating environment does not meet specifications. The toner-density setting is incorrect. The high-transfer setting is turned off. The line-detail setting is turned off. Make sure that the printer is installed in an area that meets the environmental specifications. See Operating environment. Open the print-quality menu at the control panel and adjust the tonerdensity setting. See Print-quality submenu. Open the print-quality menu at the control panel (see Print-quality submenu). Select OPTIMIZE and set HIGH TRANSFER=ON. Open the print-quality menu at the control panel (see Print-quality submenu). Select OPTIMIZE and set LINE DETAIL=ON. Possible cause Recommended action(s) The media does not meet specifications or is not stored correctly. 1 Turn over the stack of media in the tray. Also try rotating the media 180°. 2 Check the media for type and quality. Replace the media if it does not meet specifications, and advise the customer to use the HPrecommended media and to store it correctly. See Media specifications. The operating environment does not meet specifications. The toner-density setting is incorrect. Make sure that the printer is installed in an area that meets the environmental specifications. See Operating environment. Open the print-quality menu at the control panel and adjust the tonerdensity setting. See Print-quality submenu. Image-formation troubleshooting 397