Xerox 4400DT - Phaser B/W Laser Printer, Service Manual, Page: 73 / 503

2-36 Phaser 4400 Laser Printer Service Manual
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.
Install or Reseat the Duplex Unit.
(E9-1: Duplex Unit Fail)
Duplex Unit was removed while power was on.
Maintenance Kit Troubleshooting Procedure
Step Actions and Questions Yes No
1 1. Install the Maintenance Kit in accordance with the
instructions included with it.
Does the warning message reappear?
Go to step 2. Problem
solved.
2 Perform the Fuser Reset.
Does the warning message continue to appear?
Go to step 3. Problem
solved.
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 Procedure
Step Actions and Questions Yes No
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)?
Problem
solved. 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 “Installed” with the unit
present, and “Not Installed” without the unit
present?
Replace the
Engine Logic
Board (RRP
9.3 on
page 6-89 ).
Go to step 3.
3 Check the wiring harnesses.
Are the wiring harnesses in good condition?
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 ).