Xerox 4400DT Service Manual - Page 73

Maintenance Kit is Near End of Life. Indicates that the parts that make up the Maintenance Kit (Fuser, Transfer Roller, Feed and Retard Rollers) are nearing the end of their rated useful life. Maintenance Kit Troubleshooting Procedure Step Actions and Questions Yes No 1 1. Install the Maintenance Kit in accordance with the Go to step 2. Problem instructions included with it. solved. Does the warning message reappear? 2 Perform the Fuser Reset. Go to step 3. Problem Does the warning message continue to appear? solved. 3 Replace the following in order: I Engine Logic Board (RRP 9.3 on page 6-89) I Image Processor Board (RRP 9.2 on page 6-88) I Front Panel (RRP x.x on page 6-14). Install or Reseat the Duplex Unit. (E9-1: Duplex Unit Fail) Duplex Unit was removed while power was on. Duplex Unit Troubleshooting Procedure Step Actions and Questions 1 1. Switch the printer power OFF. 2. Remove and reinstall the Duplex Unit. 3. Switch the printer power-on. 4. Print Configuration Pages. Is the Duplex Unit listed on the Configuration Page (2-sided Printing)? 2 1. Enter Service Diagnostics. 2. Select Sensor Tests and press OK. 3. Scroll to Duplex Unit Presence and press OK. Does the display read "Installed" with the unit present, and "Not Installed" without the unit present? 3 Check the wiring harnesses. Are the wiring harnesses in good condition? Yes Problem solved. No Go to step 2. Replace the Engine Logic Board (RRP 9.3 on page 6-89). Go to step 3. Replace the Duplex PWB (RRP 12.4, page 6-144). If the problem persists, replace the Engine Logic Board (RRP 9.3 on page 6-89). Replace the Duplex Harness Assembly, J32/P341 (RRP 9.12, page 6-99). 2-36 Phaser 4400 Laser Printer Service Manual