2-36 Phaser 4400 Laser Printer Service ManualMaintenance 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.Install or Reseat the Duplex Unit.(E9-1: Duplex Unit Fail)Duplex Unit was removed while power was on.Maintenance Kit Troubleshooting ProcedureStep Actions and Questions Yes No1 1. Install the Maintenance Kit in accordance with theinstructions included with it.Does the warning message reappear?Go to step 2. Problemsolved.2 Perform the Fuser Reset.Does the warning message continue to appear?Go to step 3. Problemsolved.3 Replace the following in order: Engine Logic Board (RRP 9.3 on page 6-89) Image Processor Board (RRP 9.2 on page 6-88) Front Panel (RRP x.x on page 6-14).Duplex Unit Troubleshooting ProcedureStep Actions and Questions Yes No1 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 ConfigurationPage (2-sided Printing)?Problemsolved.Go to step 2.2 1. Enter Service Diagnostics.2. Select Sensor Tests and press OK.3. Scroll to Duplex Unit Presence and press OK.Does the display read ìInstalledî with the unitpresent, and ìNot Installedî without the unitpresent?Replace theEngine LogicBoard (RRP9.3 onpage 6-89).Go to step 3.3 Check the wiring harnesses.Are the wiring harnesses in good condition?Replace theDuplex PWB(RRP 12.4,page 6-144).If theproblempersists,replace theEngine LogicBoard (RRP9.3 onpage 6-89).Replace theDuplexHarnessAssembly,J32/P341(RRP 9.12,page 6-99).
