Image formation troubleshooting Before beginning image formation troubleshooting: 1 Verify the media type is set correctly in the printer control panel, and that the media type selected in the printer driver matches the media being printed on. 2 Verify that the media meets the specifications listed in the HP LaserJet Printer Family Paper Specification Guide. The following media-related items are responsible for many image- formation and print-quality defects:
• rough paper • transparencies thicker or thinner than the specified thickness of 5 mil • heavy paper (heavier than 58 lb, or 216 g/m 2 bond) • paper that has absorbed moisture from the atmosphere • room environment (humidity too high or low) 3 Print a configuration page. The configuration page tests the ability to print each primary and process color. For information about printing a configuration page, see page 415. In addition to items listed above, the configuration page does the following:
• shows that all colors print • checks that the room humidity is within specifications • shows varying levels of color • shows that the formatter board is working properly 4 Print a demonstration page to check the following: • image quality • half-tones • process colors 438 Chapter 7 - Troubleshooting EN