Xerox C2424 Service Manual - Page 303

System Self-Maintenance To maintain peak operation, reliability, and print quality, the system has several automatic or semi-automatic maintenance functions. These functions may be started automatically after a certain number of prints or during system power on, or they may be started by the user if a print-quality defect is noted. For DADF/Scanner automatic-calibration, see "Scanner and Document Feeder Calibration" on page 2-8. ■ Printhead Maintenance Cycle (Eliminate Light Stripes) ■ Paper Preheater Cleaning (Remove Print Smears) ■ Transfix Roller Oiling ■ Drum Cleaning (Chase Page) Printhead Maintenance Cycle (Eliminate Light Stripes) The printhead maintenance cleaning cycle removes bubbles or foreign matter that cause printhead jets to malfunction. A maintenance cycle is performed: ■ At system power on ■ If the ink reservoir has cooled to the point a cleaning cycle is triggered ■ When the user selects the Eliminate Light Stripes function from the control panel A cleaning cycle is not performed when the system is coming out of standby mode. Three basic actions take place during a cleaning cycle: ■ Purging ■ Wiping ■ Printing the Cleaning Page For more detailed information on the functions of the printhead maintenance cycle, see the section, "Theory of Operation" on page 2-1. Cleaning and Maintenance 7-3