HP 640 User Guide - Page 53
If the paper is jammed in the paper feed area, Maintain the print cartridge - fax machine problems
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CARE AND MAINTENANCE If the paper is jammed in the paper feed area 1. Remove the jammed paper as shown. If the paper tears when it is being removed check to ensure that no small pieces have been left inside the machine. 2. Reload new paper with the print side facing toward you. 3. Press Cancel when finished. 4. If this was a fax, reprint the fax. For more information, see Reprinting faxes on page 40. Maintain the print cartridge CARE AND MAINTENANCE CARE AND MAINTENANCE CARE AND MAINTENANCE Maintain the print cartridge To maintain good printing quality, we recommend you occasionally maintain the print cartridge and its associated parts: Clean the print cartridge nozzles If characters are not printing completely or white streaks appear in your text, you may have clogged nozzles. Clean the print cartridge as described below: 1. Press Menu repeatedly until TOOLS appears and press OK. 2. Scroll to Clean Cartridge by pressing and press OK. 3. Examine the printed test pattern. • If print quality does not improve, reinstall the cartridge and repeat these steps. • If the line is still broken, wipe the nozzles and contacts. For more information, see Wipe the print nozzles and contacts on page 47. Wipe the print nozzles and contacts If cleaning the print cartridge nozzles as discussed above does not help and you are certain the cartridge has plenty of ink, the problem may be caused by dried ink on the print cartridge nozzles and contacts or the print cartridge carrier contacts. Follow these two sets of instructions for manual cleaning. Clean the nozzles 1. Press Access Cartridge. 2. Open the control panel and cartridge compartment cover and remove the cartridge. See Replace the print cartridge on page 44. 3. Gently blot and wipe the contacts and nozzles dry. • Use a clean cloth dampened with water to gently clean the entire copper-colored area, including the nozzles and contacts. • To dissolve any dried ink, hold the damp cloth against the nozzles for about three seconds. CARE AND MAINTENANCE CARE AND MAINTENANCE CARE AND MAINTENANCE Care and maintenance 47