User manual HP D640

[. . . ] HP 5000 Cut Sheet Printers User Manual Model D640 (Printer and Accessories) HP 5000 D640 Cut Sheet Printer User Manual (Printer and Accessories) Hewlett-Packard Company C5620-90024 E0397 Notice Hewlett-Packard makes no warranty of any kind with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Hewlett-Packard shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material. Hewlett-Packard assumes no responsibility for the use or reliability of its software on equipment that is not furnished by Hewlett-Packard. This document contains proprietary information which is protected by copyright. [. . . ] Print several test pages of your typical work output and compare the print quality to the samples. The print samples provided here are generic, that is, they show specific problems. Your own print samples are typical of your printout problems and so you must compare problem effects and not the actual print pattern. Generate test prints to compare with the quality samples. (See Appendix E for more information. ) Identify a print quality sample included in this section that has the same flaws as your print test. Review and complete the actions listed under the print sample in the order in which they are listed, generating a print after you complete each action. Check the print's quality; if the flaw or flaws are still present, continue to the next action in the list. If the flaws are repaired, you do not have to complete the remaining actions. 2. 5. If you complete all the recommended actions, including changing consumables, and the print quality doesn't improve, you may need to call your service representative to resolve the problem. Refer to "Where To Call For Help" on page F-1 for the telephone number of your nearest Hewlett-Packard service representative. Be prepared to give the service representative the error code and any messages that appear on the Control Panel to assist in troubleshooting. Print Quality Problems When you have any print quality problems, check the following items before starting your troubleshooting: 1. Check the Control Panel for any messages about consumables. If there is a "Consumable at end life" message, replace the consumable and retest for print quality. Check whether the paper being used meets Hewlett-Packard standards. (Refer to "Using Paper" on page D-1. ) Check whether the paper is handled correctly (especially for creases or wrinkles). Check whether the environment for the printer and the paper meets Hewlett-Packard standards - especially for humidity. Refer to Table C-5, "Printer environmental specifications". Check whether the rollers and the paper guides are clean (especially for scattered toner or developer, accumulated paper powder and paper pieces). Check the Economode setting; be sure it is OFF. (See "Economode" on page 2-17. ) Adjust the print density. (See "Density" on page 2-25. ) 5. 7. 6-2 Advanced Topics Maintaining Print Quality Good Quality Print Sample Figure 6-1 Good quality print sample Advanced Topics 6-3 Advanced Topics Maintaining Print Quality Specific Print Quality Problems All sample pages are shown in Letter size and portrait orientation. [. . . ] The warranty period begins on either the date of delivery, or, where the purchase price includes installation by Hewlett-Packard, on the date of installation. To have your HP5000 Model D640 printer serviced by HP, contact the closest HP Service Center. Exclusions The warranty on your HP5000 Model D640 printer and accessories shall not apply to defects resulting from: · · · · · · Improper or inadequate maintenance by customer. Customer supplied software or interfacing. Operation outside of the environmental specifications for the product. [. . . ]