Xerox Phaser 4400 Laser Printer
Service Manual

$9.99
Xerox Phaser 4400 Laser Printer<br> Service Manual
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The Xerox Phaser 4400 Laser Printer Service Manual is the primary document used for repairing and
maintaining the troubleshooting.

CONTENTS
General Information 1-1
Section Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Phaser 4400 Laser Printer Overview . . . . . . . . . . . . . . . . . . . . 1-2
Parts of the
Printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Machine Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
Menu Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
Printer Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
Error Messages and Codes 2-1
Section Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Service Diagnostics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Printer Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Image Processor POST Error Codes . . . . . . . . . . . . . . . . . . . 2-58
Troubleshooting 3-1
Section Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Troubleshooting Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Image-Quality Checkout Procedures . . . . . . . . . . . . . . . . . . . 3-41
Image-Quality Troubleshooting Procedures . . . . . . . . . . . . . . 3-53
Tests Prints, Adjustments, and NVRAM Reset 4-1
Section Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Service Test Prints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Resetting NVRAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
xiv Phaser 4400 Laser Printer Service Manual
Cleaning and Maintenance 5-1
Service Preventive Maintenance Procedure . . . . . . . . . . . . . . . 5-1
FRU Disassembly 6-1
List of Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Covers and Trays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Tray 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18
Paper Feed (Tray 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-28
Paper Feed (MPT). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-44
Paper Transportation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-57
Exit Assembly and Fuser. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-65
Xerographics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-79
Main Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-84
Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-87
Stacker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-101
Optional Paper Feeder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-120
Duplex Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-141
Envelope Feeder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-157
Parts Lists 7-1
Parts List Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Using the Parts Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Theory of Operation 8-1
Section Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
Print Process Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3 Print Process Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5
The Paper Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11
Drive Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-14
Engine Logic Board and Front Panel Functions . . . . . . . . . . . 8-22
Image Processor Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-22
Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-23
Interlocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-24
Phaser 4400 Laser Printer Service Manual xv
Laser Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-25
Fuser Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-26
Erase Cycle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-28
Fan Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-28
Duplex Printing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-29
Envelope Feeder. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-33
Stacker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-37
Option Feeder Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-42
Wiring Data 9-1
Section Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2
Base Engine Wiring Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4
550-Sheet Feeder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-22
Duplex Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-26
Stacker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-31
Envelope Feeder. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-37
xvi Phaser 4400 Laser Printer Service Manual
Phaser 4400 Laser Printer Service Manual 1-1
General Information
The Xerox Phaser. 4400 Laser Printer Service Manual is the primary document used for repairing, maintaining and troubleshooting.
To ensure complete understanding of the product, participation in Xerox Phaser 4400 Service Training is recommended.
Section Contents
Phaser 4400 Laser Printer
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Printer Memory Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Monitoring Consumables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Repackaging Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Parts of the Printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4
Base Configuration Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Internal Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Printer Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Front Panel Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Image Processor Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Machine Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-12
Menu Map. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-13
Printer Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-14
Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
Media and Tray Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
Functional Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18
Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19
Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19

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We are in business since 2002 and do our best to give our customers perfect service!

  H. Graham Jackson 2011-12-23 14:39:51  
  This is the best $9.99 I have ever spent. My much used and carefully maintained Epson R1800 stopped working shortly after the dreaded notice appeared 'Service required.......' I had always been careful to soak up the excess ink in the sponge ink reservoir and the printer was still working beautifully. Thank goodness I looked on Google for a solution and it came up with you guys, like the cavalry coming over the hill to rescue me! the reset worked perfectly and my beloved printer is once again up and running. Thank you so much, I can unreservedly recommend your software.
  Mark Wainwright 2022-11-15 18:03:40  
  Very impressed! After a fruitless search for official Epson support for the Waste Ink error I found a YouTube video showing how to remove and clean the ink pads but still needed to reset the counter. After some initial "Is this unofficial 3rd Party Solution a scam?" trepidation I took a chance on the WIC reset tool and now, about half an hour (mainly spent drinking tea and waiting for the key to be emailed) and 6 quid later I have a fully functioning XP-342. In the meantime, Epson UK responded to a message I sent them on Twitter, telling me that I could send the printer away to their service centre for an unspecified period of time and pay them £48 to have the ink pads changed and the counter reset. All with a caveat that having "tampered" with the ink pads myself, the service centre might refuse to fix the printer. Thanks for a great piece of kit which has saved me a lot of time, effort and money.
  alla melouk 2010-09-17 06:59:02  
  Thank you for WIC Reset Utility it worked 3 times with no problem I have Epson Artisan 810 and Epson D78
  rob cantrill 2006-07-30 09:41:39  
  Your Epson C42 Service Program worked a treat to clear the counter. So easy even I could do it
  FATIH AKINCI 2018-04-19 20:11:07  
  Very practical and safe program, total guarantee. He used it several times
  algeria16 algeria 2011-07-26 16:04:21  
  I AM FROM ALGERIA I CANT BUY THIS SOFT BECAUSE THERE IS NOT A WAY FOR PAYMENT !!! ------------------------------------------ You can pay by Western Union
  DJURA ATILA 2011-05-21 12:45:55  
  Great program !!! I reset my Epson P50 very easy. Thx a lot!
  mirza subing 2008-02-20 08:03:51  
  thanks for you give my software if you want helped call me now
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