Xerox 4400DT - Phaser B/W Laser Printer Service Manual page 94

Install or Reseat Print Cartridge.
(J3: Missing EP Cartridge)
1. Print Cartridge is not installed or seated correctly.
2. The installed Print Cartridge is not the correct one.
Print Cartridge Installation Troubleshooting Procedure
Step Actions and Questions
1 1. Open the Front Cover and remove the Print
Cartridge.
2. Inspect the tab on the top center of the Print Cartridge
that actuates the Print Cartridge Sensor Assembly.
Is the tab on the Print Cartridge intact?
2 Press and release the Print Cartridge Sensor Assembly
Actuator.
Does the Print Cartridge Sensor Assembly
Actuator move smoothly?
3 1. Enter Service Diagnostics and select Sensor Tests.
2. Scroll to Print Cartridge Sensor test and press OK.
3. Insert and remove the Print Cartridge a few times.
Does the display alternate between "Not
Installed" and "Installed" as you remove and
replace the Print Cartridge?
4 1. Switch the printer power OFF.
2. Remove the Left Interface Cover (RRP 1.1 on
page 6-6), the Left Cover (RRP 1.2 on
the Left Plate (RRP 1.11 on
3. Install the Print Cartridge. Leave the Front Cover
open.
4. Disconnect P/J25 from the Engine Logic Board.
5. On the Engine Logic Board, check for continuity
between J21-4 and J25-3, and J25-2 and J25-1 as
you insert and remove the Print Cartridge.
Is there continuity between J25-4 and J25-3, and
J25-2 and J25-1 when you insert the cartridge
and no continuity when you remove the
cartridge?
5 Is the Print Cartridge a Xerox Phaser 4400 Print
Cartridge?
Phaser 4400 Laser Printer Service Manual
page 6-7), and
page 6-16).
Yes No
Go to step 2. Replace the
Print
Cartridge (PL
8.1 on
page
Go to step 3. Replace the
Print
Cartridge
Sensor
Assembly
(RRP 7.3 on
page
Replace the Go to step 4.
Engine Logic
Board (RRP
9.3 on
page 6-89).
Replace the Go to step 5.
Engine Logic
Board (RRP
9.3 on
page 6-89).
Replace the Replace
Print Print
Cartridge Cartridge
Sensor with a Xerox
Assembly Phaser 4400
together with Print
the harness Cartridge (PL
(RRP 7.4 on 8.1 on
page 6-81). page
7-20).
6-81).
7-20).
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