Xerox DOCUPRINT N4525 Service Quick Reference Manual
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Xerox DOCUPRINT N4525 Service Quick Reference Manual

Xerox DOCUPRINT N4525 Service Quick Reference Manual

Network laser printer
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D O C U P R I N T
N E T W O R K L A S E R P R I N T E R
Ser vice Quick Refe rence Gu ide
Volu me 1 — Pr int E ng ine
Warning
The following servicing instructions are for
use by qualified service personnel only. To
avoid personal injury, do not perform any
servicing other than that contained in
operating instructions unless you are qualified
to do so.
This printing: April 5, 2001
Rev. NEW
721P58090
®
N 4 5 2 5

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Summary of Contents for Xerox DOCUPRINT N4525

  • Page 1 ® D O C U P R I N T N 4 5 2 5 N E T W O R K L A S E R P R I N T E R Ser vice Quick Refe rence Gu ide Volu me 1 —...
  • Page 2 Copyright 2001 Xerox Corporation. Printed in the United States of America. All rights reserved. Contents of this publication may not be reproduced in any form without permission of Xerox, Inc. Xerox, and all product names and product numbers mentioned in this publication are trademarks.
  • Page 3 Users safety summary Terms in manual: Various terms are used throughout this manual to either provide additional information on a specific topic or to warn of possible danger that might be present during a procedure or action. Be aware of all symbols and NOTE , CAUTION and WARNING terms when they are used, and always read messages.
  • Page 4 Power Supply and Electrical Components: Before starting any service procedure, switch off the printer power and unplug the power cord from the wall outlet. If you must service the printer with power applied, be aware of the potential for electrical shock. Do not touch any electrical component unless you are instructed to do so by a service procedure.
  • Page 5 Fuser Components WARNING: This printer uses heat to fuse the toner image to a sheet of paper. The Fuser Assembly is very hot. Switch off printer power and wait at least 30 minutes for the Fuser to cool before you attempt to service the Fuser Assembly or adjacent components.
  • Page 6 Service Safety Summary For qualified service personnel only: Refer also to the preceding Users Safety Summary. Do not service alone: Do not perform internal service or adjustment of this product unless another person capable of rendering first aid or resuscitation is present.
  • Page 7 ® The Laser contained in the DocuPrint N4525 Network Laser Printer meets the following standard: Laser class 3B, maximum 5mW, wavelength 780nm. The following LASER symbol will be displayed at the start of any procedure where possible exposure to the laser beam exists. LUOKAN 1 LASERLAITE KLASS 1 LASER APPARAT...
  • Page 8 Federal Communications Commission Compliance This equipment has been tested and found to comply with the limits set for a Class B digital device, as stated in Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a commercial installation.
  • Page 9 Canadian Notice This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus as described in the radio interference regulations of the Canadian Department of Communications. NOTE: Installation of the Finisher and/or the Token Ring Interface results in a classification change to Class A.
  • Page 10 Manual Organization This Service Quick Reference Guide (QRG) is divided into two volumes. Book I Book I of the QRG contains technical information for the N4525 Print Engine (Volume 1), as well as complete Error Code and Repair Analysis Procedures (RAPs) for the Print Engine and all options for the printer.
  • Page 11 Section 3 - Troubleshooting This section specifically discusses the most common problems (using additional Repair Analysis Procedures) encountered in the following areas:  Printer Performance Problems  Image Quality Problems  Electrical Interference Problems. Section 4 - Diagnostics, Test Prints, Service Tests & NVRAM Adjustments This section provides a wide variety of test prints to assist in evaluating and/or troubleshooting the printer and options.
  • Page 12 Book II Book II contains technical information for all options for the N4525 Network Laser Printer. Information for each option is contained in a separate volume as see below. Volume 2 - High Capacity Feeder (HCF) This section contains information specific to the HCF with General Information, Error Codes, RAPs, RRPs, Parts Lists, Plug/Jack Locators and wiring information.

  • Page 13: Table Of Contents

    Paper Output Devices ...................... 1 - 21 Printing Media Specifications ..................1 - 22 Special Media: ........................1 - 22 Print Media .......................... 1 - 23 Xerox Supplies and Accessories..................1 - 26 Error Codes and Messages 1 - 29 Error messages........................1 - 29 Service Flowchart.......................
  • Page 14 P/J Location Map 8......................1 - 354 Master Wiring Diagram 1 - 355 Wiring Diagrams, Signal Information ................ 1 - 355 Master Connection and Wiring Diagram..............1 - 356 Master Connection and Wiring Diagram, continued..........1 - 357 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 15: List Of Figures

    List of Figures Fig 1-1 Print Engine ........... . 1 - 1 Fig 1-2 Parts of the Printer (Left/Front View) .
  • Page 16 Fig 1-83 Upper Chute Assembly........1 - 249 DocuPrint N4525 Network Laser Printer...
  • Page 17 Fig 1-84 Exit Roller Assembly ......... .1 - 250 Fig 1-85 Face Up Exit Sensor .
  • Page 18 Fig 1-141 Master Connection and Wiring Diagram 1 of 2 ....1 - 356 Fig 1-142 Master Connection and Wiring Diagram 2 of 2 ....1 - 357 DocuPrint N4525 Network Laser Printer...
  • Page 19 Table 1-20 Custom Paper Sizes ......... 1 - 25 Table 1-21 Xerox Professional Printing Papers ......1 - 26 Table 1-22 Xerox Transparency Film .
  • Page 20 Table 1-97 Damaged Prints ......... . . 1 - 139 1-viii DocuPrint N4525 Network Laser Printer...
  • Page 21 Table 1-147 Xerox Transparency Film ........
  • Page 22 Table 1-148 Xerox Labels ........

  • Page 23: General Information

    General Information The DocuPrint N4525 Service Manual is the primary document used for repairing and ® maintaining the DocuPrint N4525 Network Laser Printer. ® To ensure complete understanding of the product, participation in Xerox DocuPrint N4525 service training is recommended.

  • Page 24: Docuprint® N4525 Network Laser Printer Overview

    At 280,000 page count the printer will display a message informing users of the impending need to install the Maintenance Kit. At 300,000 page count the printer will instruct the user to “Install Maintenance Kit.” DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 25: Parts Of The Printer

    Parts of the Printer The printer contains the following major components: Front view Rear view 1. Door A 10. Ground-Fault-Interrupt switch 2. Multi-sheet Bypass Feeder 11. Finisher power connection 3. Door B 12. Hand grips 4. Face-down output bin 13. Controller board with host/network interface 5.
  • Page 26 4525-03 Fig 1-4 Console Configuration with Options: 1. Transport cover 2. Paper transport 3. Finisher access door 4. Finisher output bin 5. Punch bin 4525-49 Fig 1-5 Optional Finisher Components (Stapler/Hole Puncher): DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 27: Control Panel

    Control Panel The Xerox DocuPrint N4525 control panel: Displays printer status and job in process. Provides the means to change printer settings. Allows you to print reports (such as the configuration report, which lists the printer’s current settings). As shown in the following figure, the printer’s control panel has either icons and text, or icons only.
  • Page 28 A tray is empty (in this case, Tray 2 is empty and no longer being used to print): Tray 2 Empty There is a problem (in this case, a paper jam in area A): Paper Jam Clear Area A DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 29: Rear Panel

    Rear Panel Connectors The rear panel of the printer features the host interface connectors: Bi-directional parallel (high density connector). Twisted Pair 10base2 Ethernet connector. Standard USB Port. Serial Port Ethernet Port USB Port Parallel Port LED Windows Network Card S4525-006 Fig 1-8 Rear Panel Volume 1 / Print Engine - General Information...

  • Page 30: Print Engine Assemblies

    Power Supply High Voltage High Voltage Boards Power Supply Power Supply (HVPS) Board AC Plug Connector (HVPS) R2 Transformer Low Voltage (220V Printer Only) Power Supply Fan S4525-002 Fig 1-9 Print Engine Assemblies DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 31 Host Computer Parallel Interface Cable System Controller Board Network Cable Print Engine Controller Board Fuser Laser Print (EP) Cartridge Offset Exit Assembly S4525-003 Fig 1-10 Print Engine Assemblies, continued Volume 1 / Print Engine - General Information...
  • Page 32 Main Drive Assembly Offset Motor Front Cover Interlock Lazer Print (EP) Cartridge Interlock Lift Motor Tray 1 Lift Motor Tray 2 Tray 1 Size Sensor S4525-004 Fig 1-11 Print Engine Assemblies, continued 1-10 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 33 Tray 2 Size Sensor Tray 2 No Paper Sensor Tray 2 Level Sensor Tray 3 Take Away Sensor Options Connector Panel Tray 2 LH Interlock Tray 1 Level Sensor Tray 1 No Paper Sensor Registration Sensor Multi-sheet Bypass Feeder No Paper Sensor Tray 2 Take Away Sensor S4525-005 Fig 1-12 Print Engine Assemblies, continued...

  • Page 34: Paper Path

    Feed Roller Take Away 2 Sensor Pick Roller Take Away Roller, Tray 2 Tray 2 Feed Feed Roller Pick Roller Retard Pad Retard Roller S4525-306 Fig 1-13 Print Engine Paper Path 1-12 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 35: About This Manual

    Book I — Print Engine 1-Print Engine comprises the Service Quick Reference Guide for the DocuPrint N4525 Network Laser Printer. This manual covers the Print Engine, Safety Information, as well as the entirety of Error Codes and Messages, and Diagnostics for the Print Engine and the options below.

  • Page 36: General Specifications

    If flash memory is to be used, this 8-Mbyte Flash DIMM should be installed in the slot labeled J6 (Bootable RAM). Table 1-1 Memory Expansion Options Memory Upgrades: Part Number 16-Mbyte DIMM 097S02356 32-Mbyte DIMM 097S02357 64-Mbyte DIMM 097S02358 8-Mbyte Flash DIMM 097S02360 1-14 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 37: Physical Dimensions

    Physical Dimensions Table 1-2 Physical Dimensions Dimensions Specification Height 486 mm / 19.1 inches +/- 1% Width 645 mm / 25.4 inches +/- 1% Depth 540 mm / 21.3 inches +/- 1% Weight (110 V model) 48.5 Kg / 106.92 Lbs. +/- 1% (65.0 Kg / 143.3 Lbs. packaged for shipment) Weight (220 V model) 53.0 Kg / 116.85 Lbs.

  • Page 38: Electrical Specifications

    FCC Part 15, subpart B, class B (ANSI C63.4/11.4D) 220 V printer: EN55022 (CISPR Publication 22) Class Ozone generation Less than 0.02 ppm in Time Weighted Average (TWA). Measured according to ECMA 129. 1-16 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 39: Functional Specifications

    Functional Specifications Table 1-7 Functional Specifications Characteristic Specification Printing process Electro-photographic (Xerography) monochrome transfer printing Resolution of printed image 600 dpi (dots per inch) Exposure method Data modulated (off/on) laser beam Development method Dry toner and carrier mixture Fusing method Heat and pressure Laser specifications Class 3B, 5 milliwatt semiconductor laser diode...

  • Page 40: Printing Speeds: First Sheet Out

    A3 SEF Simplex 24 ppm 24 ppm 22 ppm A3 SEF Duplex 16 ppm 16 ppm Ledger SEF Simplex 24 ppm 24 ppm 22 ppm Ledger SEF Duplex 16 ppm 16 ppm 1-18 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 41: Paper Input Devices

    Paper Input Devices Trays 1 and 2 for the 500 Sheet Feeder (standard) Standard feeder for the DocuPrint® N4525 Network Laser Printer. Each tray has paper size automatic sensing. Trays 1 and 2 can each hold up to 500 sheets (54 mm (2.126 in.) stack height of 20 lb.

  • Page 42: Table 1-12 High Capacity Feeder Tray 3 Paper Sizes

    DL (River series #01029/Gummed) - 110 mm x 220 mm (4.33 x 8.67 in.) The optional Envelope Feeder replaces the MBF. It has a No Note Paper Sensor and can hold up to 100 of the above envelopes. 1-20 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 43: Paper Output Devices

    Paper Output Devices The printer uses the following paper output/paper size combinations: Face Down Tray (standard) The Face Down Tray is the standard output tray for the printer. Paper is transported out of the printer face down onto the printer Top Cover. This tray holds up to 500 sheets of 20 lb. paper, and comes equipped with Full Stack detection.

  • Page 44: Printing Media Specifications

    110 mm x 220 mm DL (Rivers series #01029/Gummed Postcard A6 - 100 mm x 148 Japanese Official Postcard Please refer to the FRU (Field Replaceable Unit) section for more Note details and part numbers. 1-22 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 45: Print Media

    Print Media Storing paper Store the paper on a flat surface, in a relatively low-humidity environment. Avoid storing paper in such a way as to cause wrinkling, bending, curling, etc. Do not unwrap paper until you are ready to use it, and rewrap any paper you are not using.

  • Page 46: Table 1-19 Supported Media And Media Sizes

    Custom Sizes — see the following page for the range of acceptable sizes. Envelopes, transparencies, labels, and custom sizes cannot be printed in duplex mode. Tray 4 only Not available if Custom Paper Tray is used in Tray 2 or 3 position. 1-24 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 47: Table 1-20 Custom Paper Sizes

    Custom paper sizes Table 1-20 Custom Paper Sizes Acceptable sizes Custom paper tray Multi-sheet Bypass Feeder Width 181 - 298.5 mm 76.2 - 297 mm (7.13 - 11.75 in.) (3 - 11.69 in.) Length up to 431.8 mm 98.4 - 431.8 mm (up to 17 in.) (3.875 - 17 in.) Tray 1...

  • Page 48: Xerox Supplies And Accessories

    Letter (U. S.) 8.5 x 11 in. 30 labels per sheet 003R04469 Letter (U. S.) 8.5 x 11 in. 24 labels per sheet 003R04471 A4 (Metric Letter) 210 x 297 mm 24 labels per sheet 003R97406 1-26 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 49: Table 1-24 Printer Options

    Printer Options Table 1-24 Printer Options Item Part Number Custom Paper Tray 097S02562 Handles continuously variable paper sizes Holds up to 500 sheets of 80 g/m (20 lbs.) stock High Capacity Feeder - 2,500-Sheet Feeder 097S02560 Three additional trays Increased paper-printing capacity Increased printing versatility and convenience Envelope Feeder 097S02567...
  • Page 50 Blank Page 1-28 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 51: Error Codes And Messages

    Error Codes and Messages Error messages The Control Panel displays error codes when it encounters certain system failures or anomalies otherwise undetected by the user. These error codes are discussed in this section. When an error code first occurs, cycle power on the printer to see if the error recurs.
  • Page 52 Use the Removal and Replacement Procedures (RRPs) to replace a part. Final Checkout Test the printer to be sure you corrected the initial problem and there are no additional problems present. S4525-03 Fig 1-14 Service Flowchart 1-30 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 53: The Repair Analysis Procedure Table

    The Repair Analysis Procedure Table If you used the Service Flowchart, it may have directed you to this section. Follow the Repair Analysis Procedure Table located in this section to help you analyze your printer problem. How to Use a Repair Analysis Procedure Table If you have an error code or error message displayed, refer to the Repair Analysis Procedure in this section and locate the ERROR CODE in the “Error Code”...

  • Page 54: General Notes On Using Repair Analysis Procedures

    When a Repair Analysis Procedure instructs you to replace a non-spared component, and that component is part of a larger assembly, you should replace the entire assembly. 1-32 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 55 Repair Analysis Procedures assume there is no malfunction in the Note System Controller Board. If you are unable to fix a problem using the Repair Analysis Procedures, it is recommended that you replace the System Controller board. In some instances, the Control Panel Display may not be sufficiently functional to accurately show error codes and/or messages.

  • Page 56: Before Starting The Error Code Repair Analysis Procedures

    Terminal) and appears in the display on the Control Panel as a result of programming. High Capacity Feeder Option Duplex Module Option Envelope Feeder Option Finisher Option Sensor Abbreviated sensor callout identifier Switch Abbreviated switch callout identifier 1-34 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 57: Table 1-27 Repair Analysis Procedure (Rap) Table

    Table 1-27 Repair Analysis Procedure (RAP) Table Displayed Error Fault Description Go To Unit/ Error Code Page Message Clear Area A C1-3 There is a paper jam between Paper Tray 1 and 1-81 Reset Tray 1 the Registration Sensor. 1-30 Logic Control on the print Engine Controller Board sensed that the Registration Sensor did not actuate within the specified time after the Tray 1 Feed Clutch...
  • Page 58 There is a problem with the Tray Take Away 1-86 Clear Areas A,B Sensor. 1-33 Logic Control on the Print Engine Controller Board sensed the Tray 2 Take Away Sensor was on while the printer was in standby. 1-36 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 59 Table 1-27 Repair Analysis Procedure (RAP) Table (cont'd.) Displayed Error Fault Description Go To Unit/ Error Code Page Message Paper Jam C8-3 There is a problem with the Tray 3 Take Away 2-391 Clear Areas B,C Sensor. 2-10 Logic Control on the Print Engine Controller Board sensed the Tray 3 Take Away Sensor was on while the printer was in standby.
  • Page 60 There is a paper jam at the Duplex Exit Sensor. 3-512 Clear Duplx Unit Inverted Printed Page to be outputted to the Face Up Tray did not leave the Duplex Module Exit Sensor within the specified time. 1-38 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 61 Table 1-27 Repair Analysis Procedure (RAP) Table (cont'd.) Displayed Error Fault Description Go To Unit/ Error Code Page Message Paper Jam E8-2 There is a paper jam between the Face Up Exit 3-514 Clear Duplx Unit sensor and the duplex Wait Sensor. Inverted Printed Page to be stationed in the Duplex Unit did not reach the Duplex Unit Wait Sensor within specified time.
  • Page 62 Logic Control on the Print Engine Controller Board 2-15 sensed that the Tray 5 Paper Level Sensor did not actuate within the specified after the Tray 5 Lift Motor was actuated. 1-40 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 63 Table 1-27 Repair Analysis Procedure (RAP) Table (cont'd.) Displayed Error Fault Description Go To Unit/ Error Code Page Message Duplex Unit Fail H2-7 There is a communication problem between the 1-93 Power Off/On printer and the Duplex Unit. 1-38 Logic Control on the Print Engine Controller Board could not initialize the Duplex Unit within the specified time.
  • Page 64 There is a problem with the Start Of Scan (SOS) 1-51 Power Off/On Sensor. Logic Control on the Print Engine Controller Board detected the time between signals from the Start of Scan Sensor was longer than specified. 1-42 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 65 Table 1-27 Repair Analysis Procedure (RAP) Table (cont'd.) Displayed Error Fault Description Go To Unit/ Error Code Page Message Laser Failure U3-4 There is a problem with the Start Of Scan (SOS) 1-52 Power Off/On Sensor. Logic Control on the Print Engine Controller Board detected the time between signals from the Start Of Scan Sensor was shorter than specified.

  • Page 66: System Controller Error Codes

    0010 - DISK Hard disk failure. Format Hard Disk (Call Technical Support for assistance) Replace the Hard Disk (Instructions supplied with the replacement hard disk) Replace the Print Engine Controller Board (RRP 1-73) 1-44 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 67 DIMM 2 failure. Replace DIMM 2. 0103 - DIMM3 DIMM 3 failure. Replace DIMM 3. 2000 - XIE RAM System Controller Xerox Image Enhanced PWPM failure. Replace System Controller Board. Go to RRP 1-73. 2010 - XIE PWPM System Controller Xerox Image Enhanced PWPM failure.

  • Page 68: Fig 1-122 Fuser Assembly

    2. Hand rotate (counter clockwise) the Main Motor. 1-10) Can you easily rotate the Main Motor and do all of the gears on the Main Drive Assembly rotate freely and without binding? 1-46 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 69 Table 1-29 Error Code U1-1 Motor Failure Power Off/On (cont'd.) Step Actions and Questions SUBSYSTEM ISOLATION Replace the Replace the Multi-sheet Main Drive 1. Remove the Multi-sheet Bypass Feeder Feed Clutch Bypass Asembly (RRP 1-29). Feeder Feed (RRP 1-66) 2. Hand rotate (counter clockwise) the Main Motor. Clutch (RRP Can you easily rotate the Main Motor and do all 1-29...

  • Page 70: Table 1-30 Error Code U1-3 Lvpsfan Failure

    Fan High to check the Low Voltage Power Supply Fan function. 1-72) (RRP 1-67) 3. Press [4] to start, [0] to stop. Does Fan rotate when you start theLVPS Fan Output Test? 1-48 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 71: Fig 1-94 Print Engine Controller Board

    RAP 1-3 Error Code U1-4 Drum Mtr Fail Power Off/On There is a problem with the Drum Motor. Logic Control on the Print Engine Controller Board detected a problem with the Drum Motor. Table 1-31 Error Code U1-4 Drum Mtr Fail Power Off/On Step Actions and Questions DRUM MOTOR TEST...

  • Page 72: Table 1-32 Error Code U3-1 Laser Failure Power Off/On

    Wiring and connectors linking the components Interlock switches and circuits Input/Output Board (RRP 1-70). 1-50 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 73: Table 1-33 Error Code U3-3 Laser Failure Power Off/On

    RAP 1-5 Error Code U3-3 Laser Failure Power Off/On There is a problem with the Start of Scan (SOS) Sensor. Logic Control on the Print Engine Controller Board detected that the time between signals from the Start of Scan Sensor was longer than specified. Table 1-33 Error Code U3-3 Laser Failure Power Off/On Step Actions and Questions...

  • Page 74: Table 1-34 Error Code U3-4 Laser Failure Power Off/On

    Repair Analysis Procedure, replace each component or troubleshoot each area listed below, one at a time, until you isolate and solve the problem. Wiring and connectors linking the components Input/Output Board (RRP 1-70). 1-52 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 75: Table 1-35 Error Code U3-5 Laser Failure Power Off/On

    RAP 1-7 Error Code U3-5 Laser Failure Power Off/On There is a problem with the Laser Scanner. Logic Control on the Print Engine Controller Board detected that the Laser Scanner Motor has not come up to full speed within the specified time. Table 1-35 Error Code U3-5 Laser Failure Power Off/On Step Actions and Questions...

  • Page 76: Table 1-36 Error Code U4-1 Fuser Failure Power Off/On

    Repair Analysis Procedure, replace each component or troubleshoot each area listed below, one at a time, until you isolate and solve the problem. Wiring and connectors linking the components Input/Output Board (RRP 1-70). 1-54 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 77: Table 1-37 Error Code U4-2 Fuser Failure Power Off/On

    RAP 1-9 Error Code U4-2 Fuser Failure Power Off/On There is a problem with the Fuser. Logic Control on the Print Engine Controller Board detected the Fuser temperature exceeded the temperature set for Fuser overheat. Table 1-37 Error Code U4-2 Fuser Failure Power Off/On Step Actions and Questions FUSER REPLACEMENT...

  • Page 78: Table 1-38 Error Code U4-3 Fuser Failure Power Off/On

    Repair Analysis Procedure, replace each component or troubleshoot each area listed below, one at a time, until you isolate and solve the problem. Wiring and connectors linking the components Input/Output Board (RRP 1-70). 1-56 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 79: Table 1-39 Error Code U4-4 Fuser Failure Power Off/On

    RAP 1-11 Error Code U4-4 Fuser Failure Power Off/On There is a problem with the Fuser. Logic Control on the Print Engine Controller Board sensed that the Fuser Thermostat opened. Table 1-39 Error Code U4-4 Fuser Failure Power Off/On Step Actions and Questions FUSER REPLACEMENT Go to step 2...

  • Page 80: Table 1-40 Error Code U4-5 Fuser Failure Power Off/On

    Repair Analysis Procedure, replace each component or troubleshoot each area listed below, one at a time, until you isolate and solve the problem. Wiring and connectors linking the components Input/Output Board (RRP 1-70). 1-58 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 81: Table 1-41 Error Code U4-9 Fan Failure Power Off/On

    RAP 1-13 Error Code U4-9 Fan Failure Power Off/On There is a problem with the Fuser Fan. Logic control on the Print Engine Controller Board received a Fan Alarm signal from the Fuser Fan. Table 1-41 Error Code U4-9 Fan Failure Power Off/On Step Actions and Questions FUSER FAN TEST...

  • Page 82: Table 1-42 Error Code U6-2 Iot Memory Fail Power Off/On

    Repair Analysis Procedure, replace each component or troubleshoot each area listed below, one at a time, until you isolate and solve the problem. Wiring and connectors linking the components Input/Output Board (RRP 1-70). 1-60 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 83: Table 1-43 Error Code U6-3 Iot Nvm Fail Power Off/On

    RAP 1-15 Error Code U6-3 IOT NVM Fail Power Off/On There is an unnamed problem with non-volatile memory. Logic Control on the Print Engine Controller Board had a problem with NVRAM. Table 1-43 Error Code U6-3 IOT NVM Fail Power Off/On Step Actions and Questions RESET...

  • Page 84: Table 1-44 Error Code U6-4 Iot Nvm Fail Power Off/On

    Repair Analysis Procedure, replace each component or troubleshoot each area listed below, one at a time, until you isolate and solve the problem. Wiring and connectors linking the components. 1-62 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 85: Table 1-45 Error Code U6-5 Iot Asic Fail Power Off/On

    RAP 1-17 Error Code U6-5 IOT ASIC Fail Power Off/On There is a problem with ASIC-CRUM. Logic control on the Print Engine Controller Board detect an ASIC-CRUM control circuit error. Table 1-45 Error Code U6-5 IOT ASIC Fail Power Off/On Step Actions and Questions RESET...

  • Page 86: Fig 1-117 Registration

    Registration Sensor, and does it show “without paper” when you remove the paper? PRINT ENGINE CONTROLLER BOARD Go to step 7 Problem REPLACEMENT solved Replace the Print Engine Controller Board (RRP 1-72). Does the error code appear? 1-64 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 87 Table 1-46 Error Code E1-1 Paper Jam Clear Area A (cont'd.) Step Actions and Questions The following printer components and areas are associated with this specific problem. One or more of these components or areas may have failed partially or completely.

  • Page 88: Table 1-47 Error Code E1-2 Paper Jam Clear Area A

    Go to step 7 Go to step 9 Open the Left Upper Cover (A) and observe the position of the jammed paper. Did the sheet of paper stop on the Drum? 1-66 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 89 Table 1-47 Error Code E1-2 Paper Jam Clear Area A (cont'd.) Step Actions and Questions DRUM INSPECTION Replace the Go to step 8 Laser Print Open the Left Upper Cover (A) and open the Drum (EP) Shutter. Cartridge Are the stripper fingers damaged or is there paper stuck under the fingers or stuck between the Drum and Laser Print (EP) Cartridge frame?
  • Page 90 Repair Analysis Procedure, replace each component or troubleshoot each area listed below, one at a time, until you isolate and solve the problem. Wiring and connectors linking the components Input/Output Board (RRP 1-70). 1-68 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 91: Table 1-48 Error Code E1-3 Paper Jam Clear Area A

    RAP 1-20 Error Code E1-3 Paper Jam Clear Area A There is a paper jam between the Fuser Exit Sensor and the Face Up Exit Sensor. Logic Control on the Print Engine Controller Board sensed the Face Up Exit Sensor was not actuated within the specified time since the Fuser Exit Sensor was actuated Table 1-48 Error Code E1-3 Paper Jam Clear Area A Step...
  • Page 92 Repair Analysis Procedure, replace each component or troubleshoot each area listed below, one at a time, until you isolate and solve the problem. Wiring and connectors linking the components Input/Output Board (RRP 1-70). 1-70 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 93: Table 1-49 Error Code E1-6 Paper Jam Clear Area A

    RAP 1-21 Error Code E1-6 Paper Jam Clear Area A There is a problem at the Registration Sensor. Paper is detected on the Registration Sensor. Table 1-49 Error Code E1-6 Paper Jam Clear Area A Step Actions and Questions SENSOR INSPECTION Go to step 2 Clean or clear paper from...

  • Page 94: Table 1-50 Error Code E3-1 Paper Jam Clear Area A

    4. Hand rotate (counter clockwise) the Main Drive Motor. Do the Offset Rollers rotate? PRINT ENGINE CONTROLLER BOARD Go to step 7 Problem REPLACEMENT solved Replace the Print Engine Controller Board (RRP 1-72) Does the error code appear? 1-72 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 95 Table 1-50 Error Code E3-1 Paper Jam Clear Area A Step Actions and Questions The following printer components and areas are associated with this specific problem. One or more of these components or areas may have failed partially or completely. If you cannot isolate this problem using the steps in this Repair Analysis Procedure, replace each component or troubleshoot each area listed below, one at a time, until you isolate and solve the problem.

  • Page 96: Table 1-51 Error Code E3-6 Paper Jam Clear Area A

    Repair Analysis Procedure, replace each component or troubleshoot each area listed below, one at a time, until you isolate and solve the problem. Wiring and connectors linking the components Input/Output Board (RRP 1-70). 1-74 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 97: Table 1-52 Error Code E4-1 Paper Jam Clear Area A

    RAP 1-24 Error Code E4-1 Paper Jam Clear Area A There is a paper jam at the Face Up Exit Sensor. Logic Control on the Print Engine Controller Board sensed that during Face-Up-Mode, the Face Up Exit Sensor did not de-actuate within the specified time after actuating.

  • Page 98: Table 1-53 Error Code E4-3 Paper Jam Clear Area A

    Repair Analysis Procedure, replace each component or troubleshoot each area listed below, one at a time, until you isolate and solve the problem. Wiring and connectors linking the components Input/Output Board (RRP 1-70). 1-76 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 99: Table 1-54 Error Code E4-5 Paper Jam Clear Area A

    RAP 1-26 Error Code E4-5 Paper Jam Clear Clear A There is a problem near the Fuser Exit Sensor. The inverted page to be stationed in the Duplex Module did not reach the Face Up Exit Sensor within the specified time. Table 1-54 Error Code E4-5 Paper Jam Clear Area A Step Actions and Questions...

  • Page 100: Table 1-55 Error Code E4-6 Paper Jam Clear Area A

    Repair Analysis Procedure, replace each component or troubleshoot each area listed below, one at a time, until you isolate and solve the problem. Wiring and connectors linking the components Input/Output Board (RRP 1-70). 1-78 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 101: Table 1-56 Error Code E5-1 Close Door A

    RAP 1-28 Error Code E5-1 Close Door A The Left Door (A) is open. The Left Door (A) is closed, but Logic Control on the Print Engine Controller Board sensed the Left Door (A) Interlock Switch indicates the door is open Table 1-56 Error Code E5-1 Close Door A Step Actions and Questions...

  • Page 102: Fig 1-92 Input/Output Board

    Repair Analysis Procedure, replace each component or troubleshoot each area listed below, one at a time, until you isolate and solve the problem. Wiring and connectors linking the components Input/Output Board (RRP 1-70). 1-80 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 103 RAP 1-30 Error Code C1-3 Clear Area A Reset Tray 1 There is a paper jam between Paper Tray 1 and the Registration Sensor. Logic Control on the Print Engine Controller Board sensed that the Registration Sensor did not actuate within the specified time after the Tray 1 Feed Clutch was actuated.
  • Page 104 Repair Analysis Procedure, replace each component or troubleshoot each area listed below, one at a time, until you isolate and solve the problem. Wiring and connectors linking the components Input/Output Board (RRP 1-70). 1-82 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 105 RAP 1-31 Error Code C2-2 Clear Area A,B Reset Tray 2 There is a paper jam between Paper Tray 2 and the Take AwayRoller 2 Sensor. Logic Control on the Print Engine Controller Board sensed that the Take Away Roller 2 Sensor did not actuate within the specified time after the Tray 2 Feed Clutch was actuated.

  • Page 106: Table 1-59 Error Code C2-2 Clear Area A,B Reset Tray 2

    Repair Analysis Procedure, replace each component or troubleshoot each area listed below, one at a time, until you isolate and solve the problem. Wiring and connectors linking the components Input/Output Board (RRP 1-70). 1-84 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 107: Table 1-60 Error Code C2-3 Paper Jam Clear Area A

    RAP 1-32 Error Code C2-3 Paper Jam Clear Area A There is a paper jam between Paper Tray 2 and the Registration Sensor. Logic Control on the Print Engine Controller Board sensed that the Registration Sensor did not actuate within the specified time after the Tray 2 Feed Clutch was actuated.

  • Page 108: Table 1-61 Error Code C8-2 Paper Jam Clear Areas A,B

    Repair Analysis Procedure, replace each component or troubleshoot each area listed below, one at a time, until you isolate and solve the problem. Wiring and connectors linking the components Input/Output Board (RRP 1-70). 1-86 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 109: Table 1-62 Error Code C9-2 Paper Jam Reset Env/Bypass

    RAP 1-34 Error Code C9-2 Paper Jam Reset ENV/Bypass There is a paper jam between the Multi-sheet Bypass Feeder and Tray 2 Take Away Sensor. Logic Control on the Print Engine Controller Board sensed that when paper was fed from the Multi-sheet Bypass Feeder, Tray 2 Take Away Sensor did not actuate within the specified time after the Multi-sheet Bypass Feeder Feed Clutch was actuated.
  • Page 110 Repair Analysis Procedure, replace each component or troubleshoot each area listed below, one at a time, until you isolate and solve the problem. Wiring and connectors linking the components Input/Output Board (RRP 1-70). 1-88 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 111: Table 1-63 Error Code C9-3 Paper Jam Reset Env/Bypass

    RAP 1-35 Error Code C9-3 Paper Jam Reset ENV/Bypass There is a paper jam between the Multi-sheet Bypass Feeder and the Registration Sensor. Logic Control on the Print Engine Controller Board sensed that when paper was fed from the Multi-sheet Bypass Feeder, the Registration Sensor did not actuate within the specified time after the Multi-sheet Bypass Feeder Feed Clutch was actuated.
  • Page 112 Repair Analysis Procedure, replace each component or troubleshoot each area listed below, one at a time, until you isolate and solve the problem. Wiring and connectors linking the components Input/Output Board (RRP 1-70). 1-90 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 113 RAP 1-36 Error Code H1-1 Insert Tray 1 There is a Lift Up problem with Tray 1. Logic Control on the Print Engine Controller Board sensed that Tray 1 was not raising into position in Feeder 1. Table 1-64 Error Code H1-1 Insert Tray 1 Step Actions and Questions Tray 1 LIFT MOTOR TEST...
  • Page 114 Repair Analysis Procedure, replace each component or troubleshoot each area listed below, one at a time, until you isolate and solve the problem. Wiring and connectors linking the components Input/Output Board (RRP 1-70). 1-92 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 115: Table 1-66 Error Code H2-7 Duplex Unit Fail Power Off/On

    RAP 1-38 Error Code H2-7 Duplex Unit Fail Power Off/On There is a communication problem between the printer and the Duplex Unit. Logic Control on the Print Engine Controller Board could not initialize the Duplex Unit within the specified time. Table 1-66 Error Code H2-7 Duplex Unit Fail Power Off/On Step Actions and Questions...
  • Page 116 Repair Analysis Procedure, replace each component or troubleshoot each area listed below, one at a time, until you isolate and solve the problem. Wiring and connectors linking the components Input/Output Board (RRP 1-70). 1-94 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 117 RAP 1-40 Error Code H4-2 Load Tray 2 There is a problem with paper fed from Tray 2. Tray 2 out of paper or size/type incorrect for printed job. Table 1-68 Error Code H4-2 Load Tray 2 Step Actions and Questions Tray 2 PAPER GUIDE CHECK Go to step 2 Adjust the...

  • Page 118: Table 1-69 Error Code J1-2 Replace Print Cartridge

    Repair Analysis Procedure, replace each component or troubleshoot each area listed below, one at a time, until you isolate and solve the problem. Wiring and connectors linking the components Input/Output Board (RRP 1-70). 1-96 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 119: Table 1-70 Error Code J3-1 Install Print Cartridge

    RAP 1-42 Error Code J3-1 Install Print Cartridge The Laser Print (EP) Cartridge is not installed or is not installed correctly. Logic Control on the Print Engine Controller Board sensed that the Laser Print (EP) Cartridge Interlock Switch was not actuated. Table 1-70 Error Code J3-1 Install Print Cartridge Step Actions and Questions...

  • Page 120: Table 1-71 Error Code J6-1 Replace Print Cartridge

    Repair Analysis Procedure, replace each component or troubleshoot each area listed below, one at a time, until you isolate and solve the problem. Wiring and connectors linking the components Input/Output Board (RRP 1-70). 1-98 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 121: Table 1-72 Error Code J8-1 Print Cartridge Oem Id Mismatch

    RAP 1-44 Error Code J8-1 Print Cartridge OEM ID Mismatch The wrong Laser Print (EP) Cartridge is installed in the printer. Logic Control on the Print Engine Controller Board sensed that the Laser Print (EP) Cartridge installed is not compatible with the printer. Table 1-72 Error Code J8-1 Print Cartridge OEM ID Mismatch Step Actions and Questions...

  • Page 122: Table 1-73 Error Code J8-3 Install Print Cartridge

    Repair Analysis Procedure, replace each component or troubleshoot each area listed below, one at a time, until you isolate and solve the problem. Wiring and connectors linking the components Input/Output Board (RRP 1-70). 1-100 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 123: Table 1-74 Error Code J8-4 Crum Failure Power Off/On

    RAP 1-46 Error Code J8-4 CRUM Failure Power Off/On A Laser Print (EP) Cartridge memory communication error occurred. Logic Control on the Print Engine Controller Board could not access Laser Print (EP) Cartridge Memory data. Table 1-74 Error Code J8-4 CRUM Failure Power Off/On Step Actions and Questions LOW VOLTAGE POWER SUPPLY +5VDC...

  • Page 124: Table 1-75 Error Code J8-5 Crum Failure Replace Cru

    Repair Analysis Procedure, replace each component or troubleshoot each area listed below, one at a time, until you isolate and solve the problem. Wiring and connectors linking the components Input/Output Board (RRP 1-70). 1-102 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 125: Troubleshooting

    Troubleshooting This topic discusses troubleshooting the printer. Troubleshooting is discussed in the following areas: Printer Performance Problems: Refer to the Printer Performance Problems Repair Analysis Procedure (RAP) Table on page, 1-105. Image Quality Problems: Refer to the Image Quality Problems Repair Analysis Procedure (RAP) Table on page, 1-113.

  • Page 126: Image Quality Problems Repair Analysis Procedure (Rap) Table

    Table 1-78 Electrical Interference RAP Table Problem Go To RAP No. Page Electrical Interference - Something is generating RAP 1-80 on page, 1-147 electrical noise that may be interfering with the normal operation of the printer. 1-104 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 127: Printer Performance Problems

    Printer Performance Problems RAP 1-50 Inoperative Printer The printer appears to be dead. When you switch on the printer, the Control Panel LEDs do not light, the display remains blank, the Fuser Fan does not rotate, and the printer does not warm-up.
  • Page 128 Fault Isolation Procedure, replace each component or troubleshoot each area listed below, one at a time, until you isolate and solve the problem. Wiring and connectors linking the components Interlock switches and circuits. 1-106 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 129: Table 1-80 Erratic Printer Operation

    RAP 1-51 Erratic Printer Operation The printer has a variety of problems that are not identified by displayed error codes or messages. Problems may range from incomplete or garbled display text to intermittent power shutdowns. Table 1-80 Erratic Printer Operation Step Actions and Questions PRINTER OPERATING ENVIRONMENT CHECK...
  • Page 130 Wiring and connectors linking the components Interlock switches and circuits Xerographic components and High Voltage Power Supply (RRP 1-69) Computer Interface Cable Control Panel (RRP 1-7) AC Driver Board (RRP 1-68). 1-108 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 131: Fig 1-41 Control Panel

    RAP 1-52 Blank, Erratic, or Inoperative Control Panel The Control Panel Display is blank or displays garbled text, or the Control Panel does not respond to user input. Table 1-81 Blank, Erratic, or Inoperative Control Panel Step Actions and Questions PRINTER STATUS TEST Go to step 2 Go to RAP...

  • Page 132: Table 1-82 Printer Does Not Display And Error Code When Out Of Toner

    Fault Isolation Procedure, replace each component or troubleshoot each area listed below, one at a time, until you isolate and solve the problem. Wiring and connectors linking the components Laser Print (EP) Cartridge. 1-110 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 133: Table 1-83 Printer Does Not Offset Paper

    RAP 1-54 The Printer Does Not Offset Paper The offset function does not work or does not work correctly. Table 1-83 Printer Does Not Offset Paper Step Actions and Questions MAIN DRIVE ASSEMBLY INSPECTION Go to step 2 Replace the Main Drive 1.
  • Page 134 Fault Isolation Procedure, replace each component or troubleshoot each area listed below, one at a time, until you isolate and solve the problem. Wiring and connectors linking the components Low Voltage Power Supply (RRP 1-67). 1-112 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 135: Image Quality Problems

    Image Quality Problems RAP 1-60 Light (Undertoned) Prints PROBLEM The overall image density is too light. The image may also be unfused due to insufficient image density. THE PRINTER DISPLAYS NO ERROR CODE. S4525-06 Fig 1-15 Light (Undertoned) Prints Table 1-84 Light (Undertoned) Prints Step Actions and Questions PAPER INSPECTION...
  • Page 136 Fault Isolation Procedure, replace each component or troubleshoot each area listed below until you isolate and solve the problem. Laser Scanner Assembly (RRP 1-47) Print Engine Controller Board (RRP 1-72) Input/Output Board (RRP 1-70). 1-114 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 137: Table 1-85 Blank Prints

    RAP 1-61 Blank Prints PROBLEM The entire image area is blank. THE PRINTER DISPLAYS NO ERROR CODE. S4525-07 Fig 1-16 Blank Prints Table 1-85 Blank Prints Step Actions and Questions CONTROLLER OR HOST SOFTWARE Troubleshoot Go to step 2 ISOLATION or replace the System Generate a Grid Test Print.
  • Page 138 Replace the Print Engine Controller Board (RRP 1-72) Input/Output Board (RRP 1-70) Refer to the wiring diagrams Section 14 and check for a broken wire or loose connection between components in the Xerographic sections of the printer. 1-116 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 139: Table 1-86 Black Prints

    RAP 1-62 Black Prints PROBLEM The entire image area is black. There is no image visible on the page. THE PRINTER DISPLAYS NO ERROR CODE. S4525-08 Fig 1-17 Black Prints Table 1-86 Black Prints Step Actions and Questions CONTROLLER OR HOST SOFTWARE Replace the Go to step 2 ISOLATION...
  • Page 140 Low Voltage Power Supply (RRP 1-67) Input/Output Board (RRP 1-70) Refer to the wiring diagrams Section 14 and check for a broken wire or loose connection between components in the Xerographic sections of the printer. 1-118 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 141: Table 1-87 Vertical Band Deletions

    RAP 1-63 Vertical Band Deletions PROBLEM There are areas of the image that are extremely light or are missing entirely. These missing areas form lines or bands that run vertically along the page in the direction of paper travel. THE PRINTER DISPLAYS NO ERROR CODE. S4525-09 Fig 1-18 Vertical Band Deletions Table 1-87 Vertical Band Deletions...
  • Page 142 Refer to the wiring diagrams, See “Master Connection and Wiring Diagram” on page 356. and check for a broken wire or loose connection between components in the Xerographic sections of the printer. 1-120 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 143: Table 1-88 Horizontal Band Deletions

    RAP 1-64 Horizontal Band Deletions PROBLEM There are areas of the image that are extremely light or are missing entirely. These missing areas form lines or bands that run horizontally across the page perpendicular to the direction of paper travel. THE PRINTER DISPLAYS NO ERROR CODE.
  • Page 144 Laser Print (EP) Cartridge Connector and Contact Springs (PL 7.2) Print Engine Controller Board (RRP 1-72) Input/Output Board (RRP 1-70) Fuser Assembly. 1-122 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 145: Table 1-89 Vertical Streaks

    RAP 1-65 Vertical Streaks PROBLEM There are black lines running vertically along the page in the direction of paper travel. THE PRINTER DISPLAYS NO ERROR CODE. S4525-11 Fig 1-20 Vertical Streaks Table 1-89 Vertical Streaks Step Actions and Questions PAPER PATH INSPECTION Go to step 2 Remove contamination...
  • Page 146 Refer to the wiring diagrams Section 14 and check for a broken wire or loose connection between components in the Xerographic sections of the printer Input/Output Board (RRP 1-70). 1-124 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 147: Table 1-90 Horizontal Streaks

    RAP 1-66 Horizontal Streaks PROBLEM There are black lines running horizontally across the paper perpendicular to the direction of paper movement. THE PRINTER DISPLAYS NO ERROR CODE. S4525-12 Fig 1-21 Horizontal Streask Table 1-90 Horizontal Streaks Step Actions and Questions LASER PRINT (EP) CARTRIDGE Problem Go to step 2...
  • Page 148 Print Engine Controller Board (RRP 1-72) Input/Output Board (RRP 1-70) Laser Print (EP) Cartridge Connector and Contact Springs (PL 7.2). 1-126 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 149: Table 1-91 Spot Deletions

    RAP 1-67 Spot Deletions PROBLEM There are areas of the image that are extremely light or are missing entirely. These missing areas form non-uniform spots that are localized to small areas of the page. THE PRINTER DISPLAYS NO ERROR CODE. S4525-13 Fig 1-22 Spot Deletions Table 1-91 Spot Deletions...
  • Page 150 Fuser and after the image exits the Fuser. inside of the Is the image on the paper normal before it printer. enters the Fuser, but there are spot deletions visible when it exits the Fuser? 1-128 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 151: Table 1-92 Spots

    RAP 1-68 Spots PROBLEM There are spots of toner scattered randomly across the page. THE PRINTER DISPLAYS NO ERROR CODE. S4525-14 Fig 1-23 Spots Table 1-92 Spots Step Actions and Questions LASER PRINT (EP) CARTRIDGE INSPECTION Replace the Go to step 2 Laser Print 1.
  • Page 152 3. Examine the paper areas before the image enters the Fuser and after the image exits the Fuser. Is paper clean before it enters the Fuser, but there are spots on the paper when it exits the Fuser? 1-130 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 153: Table 1-93 Residual Image Or Ghosting

    RAP 1-69 Residual Image or Ghosting PROBLEM There are faint, ghostly image appearing randomly on the page. The images may be images from a previous page. THE PRINTER DISPLAYS NO ERROR CODE. S4525-15 Fig 1-24 Residual Image or Ghosting Table 1-93 Residual Image or Ghosting Step Actions and Questions CUSTOMER USAGE INSPECTION...
  • Page 154 Fault Isolation Procedure, replace each component or troubleshoot each area listed below, one at a time, until you isolate and solve the problem. Print Engine Controller Board (RRP 1-72). 1-132 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 155: Table 1-94 Background

    RAP 1-70 Background PROBLEM There is a light gray dusting of toner on all or most of the printer page. THE PRINTER DISPLAYS NO ERROR CODE. S4525-16 Fig 1-25 Background Table 1-94 Background Step Actions and Questions LASER PRINT (EP) CARTRIDGE Problem Go to step 2 REPLACEMENT...
  • Page 156 Replace the paper with another brand of paper High Voltage Power Supply Assembly (RRP 1-69) Print Engine Controller Board (RRP 1-72) Input/Output Board (RRP 1-70). 1-134 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 157: Table 1-95 Toner On Back Of Print

    RAP 1-71 Toner on Back of Print PROBLEM There is toner contamination on the back of the fused sheet of paper. THE PRINTER DISPLAYS NO ERROR CODE. S4525-17 Fig 1-26 Toner on Back of Print Table 1-95 Toner on Back of Print Step Actions and Questions PAPER JAM HISTORY...
  • Page 158 High Voltage Power Supply (RRP 1-69) Print Engine Controller Board (RRP 1-72) Input/Output Board (RRP 1-70). 1-136 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 159: Table 1-96 Skewed Image

    RAP 1-72 Skewed Image PROBLEM The image is either twisted on the page or is not parallel to the sides of the page. THE PRINTER DISPLAYS NO ERROR CODE. S4525-18 Fig 1-27 Skewed Image Table 1-96 Skewed Image Step Actions and Questions PAPER FEED INSPECTION Go to step 2 Reload the...
  • Page 160 Fault Isolation Procedure, replace each component or troubleshoot each area listed below, one at a time, until you isolate and solve the problem. Laser Scanner Assembly (RRP 1-47) Bias Transfer Roller Assembly. 1-138 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 161: Table 1-97 Damaged Prints

    RAP 1-73 Damaged Prints PROBLEM The printed page exits the printer either wrinkled, creased, folded or torn. THE PRINTER DISPLAYS NO ERROR CODE. S4525-19 Fig 1-28 Damaged Prints Table 1-97 Damaged Prints Step Actions and Questions PRINTER INTERIOR INSPECTION Go to step 2 Clean the printer interior 1.
  • Page 162 2. Open the Left Upper Cover just after the lead edge of Assembly the sheet of paper has exited the Fuser. 3. Inspect the sheet of paper. (RRP 1-54) Is the sheet damaged as it leaves the Fuser? 1-140 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 163: Table 1-98 Unfused Image Or Image Easily Rubs Off Of Page

    RAP 1-74 Unfused Image or Image Easily Rubs Off of Page PROBLEM The toner image is not completely fused to the paper. THE PRINTER DISPLAYS NO ERROR CODE. S4525-20 Fig 1-29 Unfused Image or Image Easily Rubs Off of Page Table 1-98 Unfused Image or Image Easily Rubs Off of Page Step Actions and Questions...

  • Page 164: Table 1-99 Repetitive Marks On Each Page

    2. Open the Upper Left Cover when the sheet of paper is approximately half-way through the Fuser. 3. Inspect the Test Print. Does the mark appear on the paper after Fusing? 1-142 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 165: Table 1-100 Lead Edge Registration Is Not Correct

    RAP 1-76 Lead Edge Registration Is Not Correct PROBLEM The printed image is not centered on the page. The lead edge margin of the printed image is either too narrow or too wide, and either cuts off the lead edge of the printer image or starts the lead edge of the printed image too far into the page.
  • Page 166 Registration Sensor (PL 6.1.7) Registration Clutch (RRP 1-41) System Controller Board (RRP 1-73) Input/Output Board (RRP 1-70). 1-144 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 167: Table 1-101 Side-To-Side Registration Is Not Correct

    RAP 1-77 Side-to-Side Registration Is Not Correct PROBLEM The printed image is not centered on the page. The side margins are not equal and the image may be cut off on either the left or right side. THE PRINTER DISPLAYS NO ERROR CODE. S4525-23 Fig 1-32 Side-to-Side Registration Is Not Correct Table 1-101 Side-to-Side Registration Is Not Correct...
  • Page 168 Registration Chute Assembly (RRP 1-44) Laser Print (EP) Cartridge System Controller Board (RRP 1-73) Input/Output Board (RRP 1-70). 1-146 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 169: Electrical Interference Problems

    Electrical Interference Problems RAP 1-80 Electrical Interference Something is generating electrical noise that may be interfering with the normal operation of the printer. The interference generator may be either external or internal to the printer. Table 1-102 Electrical Interference Step Actions and Questions EXTERNAL NOISE Go to step 2...
  • Page 170 Lift Motors Feed Clutches Laser Scanner Assembly (RRP 1-47) Offset Unit (RRP 1-54) System Controller Board (RRP 1-73) Input/Output Board (RRP 1-70). 1-148 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 171: Diagnostics, Test Prints, Service Tests And Nvram Adjustments

    Diagnostics, Test Prints, Service Tests and NVRAM Adjustments The printer has four modes of operation: On-Line Mode Power Saver Mode Diagnostic Mode Menu Mode. On-Line Mode On-Line is the printer’s normal operating mode. In this mode, the printer is On-Line, under the control of the System Controller Board, and ready to generate output.
  • Page 172 The Menu Mode also enables the operator to set, change or adjust various features/options available int he DocuPrint N4525 Network laser Printer. If an option is not installed, the menu items for that option will not be displayed.

  • Page 173: Maintenance Reset Procedure

    The Maintenance Kit is a customer purchased / customer replaced unit (CRU). The interval for replacement is 300K prints. For Maintenance Kit part numbers, see Xerox Supplies and Accessories in the FRU Parts Lists on page 1-338. Volume 1 / Print Engine - Diagnostics, Tests & NVRAM...

  • Page 174: Test Prints

    While in the menu mode, press [1] or [5] until “PRINT MENU” is displayed. Press [2] or [6] until “Test Print” is displayed. Press [4] and the System Controller test page will be printed. 1-152 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 175 Fault History: The fault history provides two columns of figures to help track faults. A Page Count, which refers to the actual page count of the printer where a problem occurred. The Fault Description column lists the Fault (Error) Codes pertaining to the problem. In many cases, these codes can be found in the Error Codes section of this manual as an aid to troubleshooting.

  • Page 176: Print Engine Controller Board Test Prints

    When requested for password, sequentially press [0], [7], [3], [4] to gain entry. To exit Diagnostics, you must power OFF the printer, wait 20 - 30 Note seconds and power ON the printer. 1-154 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 177: Print Engine Controller Test Prints

    Print Engine Controller Test Prints The Print Engine Controller Board Test Prints require entering Diagnostics Mode. Refer to page 1-154 for instructions on how to enter Diagnostics Mode. The Control Panel Test Legend to the right will aid in navigating through the variety of test prints available. Menu Up Item Up Value Up...
  • Page 178 (1) If the High Capacity Feeder is installed. (2) If the Face Up Tray is installed. (3) If the Finisher is installed. (4) If the Multi-sheet Bypass Feeder or Envelope Feeder is desired. * = Default 1-156 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 179: Analyzing The Test Print

    Analyzing the Test Print Test prints provide several uses in troubleshooting printer problems. Isolating problems to either the print engine or to the System Controller Board and host software. Locating feed and paper transport problems. Detecting print quality and image registration problems. Using Test Prints to Isolate a Problem to the Print Engine or to the System Controller Board You can use test prints to determine if a problem is caused by a faulty print engine or by a...

  • Page 180: Nvram Counters Menu

    DM {Duplex Module} ROM Release - Press [4] Finisher ROM Version - Press [4] Finisher ROM Release - Press [4] HCF {High Capacity Feeder} ROM Release - Press [4] HCF {High Capacity Feeder} ROM Release - Press [4] 1-158 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 181: Nvram Adjustment Procedures

    NVRAM Adjustment Procedures The NVRAM Adjustment Procedures instruct you in adjusting registration globally, as well as for each individual tray and for simplex and duplex operations. In addition, the adjustments in the table below enable you to adjust a variety of fuser temperatures and to toggle Trail Force Erase on and off.
  • Page 182 (210 NVM Fuser Adj. TM2 Temp TM2 Temp Each value step = .80 (165 (195 (200 NVM Fuser Adj. TE1 Temp TE1 Temp Each value step = .80 (170 (200 (210 1-160 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 183 Table 1-104 NVRAM Adjustment Table (cont'd.) Press (3) or (7) to display “value”. Value Up (3) / Value Continue pressing [3] or Down (7) [7] to adjust “value”. Adjustment Range Line Press [1] or [5] Press [2] or [6] Press [4] to write to to display: ß...

  • Page 184: Tray Size Test

    Press [4] start, [0] stop MBF Tray Size MBF Tray paper size is displayed Tray Size Test Press [4] start, [0] stop Env Tray Size ENV Tray envelope size is displayed 1-162 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 185: Checking Lead Edge Registration

    Checking Lead Edge Registration NVM (Non-Volatile Memory) and NVRAM (Non-Volatile Random Note Access Memory) are synonymous. NVM is displayed by the Control Panel. NVRAM appears in documented text. Use only A4 paper or 8.5” x 11” paper and make certain the tray Note being tested is the only tray installed when generating the test print.
  • Page 186 The larger the value, the closer the print will move toward the side Note edge. Each incremental change of the NVM value is equal to .252 mm when adjusting the side edge registration. 1-164 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 187 Continue to press [3] or [7] to change the side edge registration value. Press [4] to write the new value into NVRAM. Recheck the new side edge registration by repeating the Checking Feed Tray Side Edge Registration test above. Volume 1 / Print Engine - Diagnostics, Tests & NVRAM 1-165...

  • Page 188: Service Tests

    2. Open Tray 1 Cover B. 3. Press [0] to end test. IOT Unit Close 1. Press [4] to begin test. Front Cover Open 2. Open Front Cover. 3. Press [0] to end test. 1-166 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 189 Table 1-106 Component Control Input Tests Press [1] or [5] until to display: Main Menu Comp Input Test (cont'd.) Press [2] or [6] to Press [3] or [7] to display: ß display: ß Action To Take Displayed Result IOT Unit With paper 1.
  • Page 190 3. Press [0] to end test. Duplex Unit Without Paper 1. Press [4] to begin test. Wait Sensor With Paper 2. Open Duplex Unit/Actuate Wait Sensor at bottom. 3. Press [0] to end test. 1-168 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 191 Table 1-106 Component Control Input Tests Press [1] or [5] until to display: Main Menu Comp Input Test (cont'd.) Press [2] or [6] to Press [3] or [7] to display: ß display: ß Action To Take Displayed Result Comp Input Test MBF/ENV Unit Without Paper 1.
  • Page 192 3. Press [0] to end test. Finisher Unit Without Box 1. Press [4] to begin test. Punch Dust Box With Box 2. Remove Punch Dust Box/ Reinstall. 3. Press [0] to end test. 1-170 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 193 Table 1-106 Component Control Input Tests Press [1] or [5] until to display: Main Menu Comp Input Test (cont'd.) Press [2] or [6] to Press [3] or [7] to display: ß display: ß Action To Take Displayed Result Finisher Unit Close 1.

  • Page 194: Table 1-107 Component Control Output

    Places Laser Scanner Motor in standby for duration or Press [0] to stop. Tray 1 Lift Mot 2 sec. Press [4] to start test. Actuate Tray 1 Lift Motor for duration or Press [0] to stop. 1-172 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 195 Table 1-107 Component Control Output Press [1] or [5] to display: Main Menu Comp Output Test Press [2] or [6] to Press [3] or [7] to Turn -On display: ß display: ß Duration Comment Tray 2 Lift Mot 2 sec. 1.
  • Page 196 1. Press [4] to start test. Exit Motor Open 2. Actuates Exit Motor Open function. Finisher Unit 2 sec. 1. Press [4] to start test. Exit Motor Close 2. Actuates Exit Motor Close function. 1-174 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 197 Table 1-107 Component Control Output Press [1] or [5] to display: Main Menu Comp Output Test Press [2] or [6] to Press [3] or [7] to Turn -On display: ß display: ß Duration Comment Finisher Unit 2 sec. 1. Press [4] to start test. Shift Motor Rear 2.
  • Page 198 1. Press [4] to start test. H Tran Gate Pull 2. Opens the Horizontal Transport In-Gate. Finisher Unit 2 sec. 1. Press [4] to start test. H Tran Gate Push 2. Closes the Horizontal Transport In-Gate. 1-176 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 199: Scheduled Maintenance

    Maintenance and Cleaning Scheduled Maintenance The DocuPrint N4525 is designed and tested to require little maintenance. A User Maintenance Kit (P/N 109R00048 for 110 volt printer and 109R00049 for 220 volt printers) contains: Replacement Fuser Bias Transfer Roller Feed Rollers (15 ea. - three for each paper input Bin) Rubber gloves for handling Feed and Bias Transfer rollers Cleaning cloth.

  • Page 200: Cleaning (General - If Needed)

    Remove the paper Bins. Slide out the Finisher (if installed). Clean all printer rollers, except the Bias Transfer Roller, with alcohol-dampaned wipes only. Never apply alcohol to the Bias Transfer Roller. 1-178 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 201 Clean the laser window with puffs of air from the suction bulb. Alternately, you can vacuum the window clean. Vacuum out the interior of the printer. Carefully clean the area around the bias transfer roller for impacted toner. Remove the bias transfer roller. Vacuum any toner visible.
  • Page 202 Blank Page 1-180 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 203: Key Fru Removal / Replacement Procedures (Rrps)

    Key FRU Removal / Replacement Procedures (RRPs) Contents - Removal and Replacement Procedures Preparation 1-183 Work Notes 1-183 Notations in the RRP text 1-184 RRP 1-1 Fuser Cover (PL 1.1) 1-185 RRP 1-2 Top Cover Assembly (PL 1.1). 1-186 RRP 1-3 Front Cover Assembly (PL 1.1) 1-187 RRP 1-4 Front Inner Cover (PL 2.3) 1-188...
  • Page 204 RRP 1-70 Input/Output Board (PL 11.2) 1-260 RRP 1-71 Left Cover Interlock Switch Assembly (PL 11.2) 1-261 RRP 1-72 Print Engine Controller Board (PL 11.3) 1-262 RRP 1-73 System Controller (PL 11.3) 1-264 1-182 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 205: Removal And Replacement Procedures (Rrps)

    Removal and Replacement Procedures (RRPs) This section contains the removal and replacement procedures for selected parts of the printer. Not all Replacement Procedures are included in this Quick Reference Guide. In most cases, to reinstall a part, simply reverse the Removal Procedure shown. In some instances, the Replacement Procedure is included because it may contain special steps.
  • Page 206 For more detailed instructions and for RRPs not listed in the Note QRG, refer to the CD-ROM (on-line) version of the N4525 Service Manual and/or to Xerox Service and Support Resources “On-Line Service Files” for this printer. 1-184 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 207 RRP 1-1 Fuser Cover (PL 1.1) S4525-74 Fig 1-35 Fuser Cover Removal Remove the Finisher, if installed. Open the Duplex Module, if installed. Pull back and remove the Paper Assembly Damper (PL 1.1.7). Open the Left Upper Cover Assembly (A) and remove the machine screw securing the Fuser Cover to the frame (see figure).
  • Page 208 Carefully lift the Top Cover a few inches off of the printer frame. Disconnect the P/J417 from the Control Panel, and lift the Top Cover Assembly off of the printer frame. 1-186 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 209 RRP 1-3 Front Cover Assembly (PL 1.1) Right hinge Strap Metal hinge S4525-76 Front Cover Assembly Fig 1-37 Front Cover Assembly Removal Open the Front Cover. Remove the black self-tapping screw securing the plastic strap to the printer frame and free the strap. Remove the black machine screw securing the metal hinge to the printer frame.
  • Page 210 It is not necessary to reconnect them to the same terminal on the Interlock Switch. If you are replacing the Interlock Switch, squeeze the latches securing the Interlock Switch to the Cover and slide the Switch out of the Cover. 1-188 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 211 RRP 1-5 Rear Cover Assembly (PL 3.3) S4525-78 Fig 1-39 Rear Cover Assembly Removal Remove the AC power cord from the rear of the printer. Remove the two machine screws securing the Rear Cover Assembly to the printer frame. Lift the Rear Cover 1/4” (6 mm), then pull the bottom of the Rear Cover away from the printer frame and slide the cover down to remove it.
  • Page 212 Remove the two machine screws securing the Top Cover and the Right Cover to the printer frame. Carefully raise the right end of the Top Cover and at the same time lift the Right Cover up and away from the printer frame. 1-190 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 213 RRP 1-7 Control Panel (PL 1.1) S4525-80 Fig 1-41 Control Panel Removal Remove the Top Cover (RRP 1-2). Disconnect the P/J417 from the Control Panel. Push in on the four tabs securing the Control Panel to the Top Cover, while you press the Control Panel out of the Cover.

  • Page 214: Fig 1-42 Rear Lower Cover

    Disconnect all option plugs from the Plug Jack located at the rear of the printer. Remove the two screws securing the Rear Lower Cover to the printer frame. Lift up on the Cover and remove it from the printer frame. 1-192 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 215: Fig 1-43 Tray 1 Lift Motor

    RRP 1-9 Tray 1 Lift Motor (PL 3.1) (P/J203) S4525-82 Fig 1-43 Tray 1 Lift Motor Removal Slide Tray 1 halfway out of the printer. Remove the Rear Cover (RRP 1-5). Disconnect the P/J203 from the rear of Tray 1 Lift Motor. Remove the three long screws securing the Motor to the printer frame.

  • Page 216: Fig 1-44 Tray 1 Feed Clutch

    RRP 1-10 Tray 1 Feed Clutch (PL 3.2) S4525-83 Fig 1-44 Tray 1 Feed Clutch 1-194 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 217 Removal Remove the Rear Cover (RRP 1-5). Open the Duplex Module, if installed. Open the Left Upper Cover (A). Disconnect the Tray 1 Feed Clutch (P/J202). Remove the E-ring that is securing the Feed Clutch to the shaft. Slide the Feed Clutch away from the printer frame, then rotate the Clutch until you have enough clearance from the Support Spring to slide the Clutch completely off of the shaft.

  • Page 218: Fig 1-45 Feeder, Pick And Retard Rollers

    Chute Roller Latch S4525-84 Fig 1-45 Feeder, Pick and Retard Rollers Use this procedure for Feeders 1 and 2. Replace the Feeder, Pick Note and Retard rollers at the same time. 1-196 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 219 Removal Remove the paper Tray from the appropriate feeder. Swing the Chute down so it clears the Rollers. Pull out on the Roller latch and slide the Roller off of the shaft. Repeat step 3 for the remaining two Rollers. Replacement Swing the Chute down so it clears the Rollers.

  • Page 220: Fig 1-46 Tray 1 Take-Away Roller Assembly

    RRP 1-12 Tray 1 Take-Away Roller Assembly (PL 3.3) Retaining Clip Option Connector Bracket Figure 1 S4525-8 Fig 1-46 Tray 1 Take-Away Roller Assembly 1-198 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 221 Removal Remove the Duplex Module, if installed. Remove the Laser Print (EP) Cartridge. Store the Laser Print (EP) Cartridge in a light proof storage bag Caution or in a dark place to prevent light damage to the drum. Remove Bins 1 and 2. Do not place paper Bins flat on carpet.

  • Page 222: Fig 1-47 Tray 1 Feeder Assembly

    RRP 1-13 Tray 1 Feeder Assembly (PL 3.2) Figure 1 S4525-86 Figure 2 Fig 1-47 Tray 1 Feeder Assembly 1-200 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 223 Removal Tray 1 from the printer. Do not place paper Bins flat on carpet. Place on a smooth Caution surface that cannot grab and dislodge the springs underneath the Bin. Alternatively, remove any paper from the Tray and lean against a wall or object. Remove the Rear Cover (RRP 1-5).

  • Page 224: Fig 1-48 Tray 1 Retard Assembly

    Remove the E-rings and Gears (PL 3.3.10-12) attached to the rear of the Take-Away Roller Shaft. Remove the Center Bearing on the Take-Away Roller Shaft, and slide the Roller out of the Retard Support. 1-202 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 225: Fig 1-49 Tray 1 & Tray 2 Front Chute Assemblies

    RRP 1-16 Tray 1 & Tray 2 Front Chute Assemblies (PL 3.1~PL 3.4) S4525-89 Fig 1-49 Tray 1 & Tray 2 Front chute Assemblies Removal Remove either Paper Tray 1 or Paper Tray 2. Do not lay paper Bins flat on carpeted floors. The carpet can Caution grab the spring on the bottom of the Tray and, when lifted, the spring may pop off, rendering the paper Tray useless.

  • Page 226: Fig 1-50 Tray 1 & Tray 2 Paper Size Sensors

    Disconnect the P/J from the Size Sensor Board. Remove the screw securing the Size Sensor Board to the printer frame, pull the board straight out and remove it from the frame. 1-204 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 227: Fig 1-51 Tray 2 Feed Clutch

    RRP 1-21 Tray 2 Feed Clutch (PL 3.5) S4525-94 Fig 1-51 Tray 2 Feed Clutch Removal Remove the Rear Cover (RRP 1-6). Disconnect the Feed Clutch connector P/J240. Remove the E-ring securing the Clutch to the shaft, and slide the Clutch off of the shaft.

  • Page 228: Fig 1-52 Tray 2 Feeder Assembly

    Figure 1 Figure 2 S4525-95 Fig 1-52 Tray 2 Feeder Assembly Take care not to break or dislodge the No Paper Actuator when Caution removing or replacing the Tray 2 Feeder Assembly. 1-206 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 229 Removal Remove Tray 2 from the printer. Do not lay paper Bins flat on carpeted floors. The carpet can Caution grab the spring on the bottom of the Tray and, when lifted, the spring may pop off, rendering the paper Tray useless. Remove the Rear Cover (RRP 1-5).

  • Page 230: Fig 1-53 Tray 2 Take-Away Roller Assembly

    RRP 1-23 Tray 2 Take-Away Roller Assembly (PL 3.6) Take Away Roller Take Away Roller Front Bearing Gear 22T S4525-96 Fig 1-53 Tray 2 Take-Away Roller Assembly 1-208 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 231 Removal Open the Left Lower Cover. Remove Rear Cover (RRP 5) Remove the machine screw securing the Feed In Chute to the Assembly, and slide the Chute to the front of the Assembly to remove it. Remove the plastic Feed Chute from the Take-Away Roller. Use extreme caution when removing the Feed Chute.

  • Page 232: Fig 1-54 Tray 2 Retard Assembly

    E-ring (removed in Step 4 above). Slide the Take-Away Roller Shaft into the Retard Assembly. Reinstall the bearing and secure with the E-ring (removed in Step 2 above). Reinstall the Take-Away Roller Assembly (RRP 1-21). 1-210 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 233: Fig 1-55 Mult-Sheet Bypass Feeder Assembly

    RRP 1-25 Multi-sheet Bypass Feeder Assembly (PL 4.2) S4525-98 Fig 1-55 Mult-Sheet Bypass Feeder Assembly Removal Face the left side of the printer. Hold both sides of the Multi-sheet Bypass Feeder Assembly and firmly pull the Assembly toward you and out of the printer. Replacement Face the left side of the printer.

  • Page 234: Fig 1-56 Multi-Sheet Bypass Feeder Tray Assembly

    RRP 1-26 Multi-sheet Bypass Feeder Tray Assembly (PL 4.2) Multi-sheet Bypass Feeder Top Cover Figure 1 (P/J107) S4525-99 Figure 2 Fig 1-56 Multi-sheet Bypass Feeder Tray Assembly 1-212 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 235 Removal Remove the Duplex Module, if installed. Remove the Multi-sheet Bypass Feeder Assembly (RRP 1-25). Remove the two machine screws (one at each end) securing the Multi-sheet Bypass Feeder Top Cover to the Multi-sheet Bypass Feeder Assembly, and remove the Top Cover by sliding it slightly toward the Bin. Disconnect the P/J107 that runs from the Tray Assembly to the Feeder Assembly (the three wire connector residing adjacent to the Tray Spring.

  • Page 236: Fig 1-57 Multi-Sheet Bypass Feeder Support Assembly

    RRP 1-27 Multi-sheet Bypass Feeder Support Assembly (PL 4.1). (P/J 603) S4525-100 Fig 1-57 Multi-sheet Bypass Feeder Support Assembly 1-214 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 237 Removal Remove the Multi-sheet Bypass Feeder Assembly (RRP 1-25). Remove the Rear Cover Assembly (RRP 1-5). Disconnect P/J603 and free the harness from the wire retaining wrap to facilitate removal of the support assembly without risk to the wires. Remove the four machine screws securing the Multi-sheet Bypass Feeder Support Assembly to the printer frame, and remove the Assembly.

  • Page 238: Fig 1-58 Multi-Sheet Bypass Feeder Size Sensor Assembly

    RRP 1-28 Multi-sheet Bypass Feeder Size Sensor Assembly (PL 4.4) Multi-sheet Bypass Feeder Tray Multi-sheet Bypass Feeder Side Guide S4525-101 Fig 1-58 Multi-sheet Bypass Feeder Size Sensor Assembly 1-216 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 239 Removal Remove the Multi-sheet Bypass Feeder Assembly (RRP 1-25). Place the Multi-sheet Bypass Feeder upside down, with the Tray facing you. Remove the two self-tapping screws securing the Lower Cover to the Upper Cover. Locate the three latches on the right side of the Bin. Press the first latch while you pry the edge of the Lower Cover out and over the latch of the Upper Cover.

  • Page 240: Fig 1-59 Multi-Sheet Bypass Feeder Feed Clutch

    RRP 1-29 Multi-sheet Bypass Feeder Feed Clutch (PL 4.3) Multi-sheet Bypass Feeder Tray Support Figure 1 Figure 2 Figure 4 S4525-102 Figure 3 Fig 1-59 Multi-sheet Bypass Feeder Feed Clutch 1-218 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 241 Removal Remove the Multi-sheet Bypass Feeder Tray Assembly (RRP 1-26). Remove the machine screw securing the Multi-sheet Bypass Feeder Tray Support to the Feeder Assembly, and pull the Support away from the Assembly (Figure 1). Disconnect the P/J208 running to the Multi-sheet Bypass Feeder Feed Clutch. Remove the machine screw securing the Rear Hook Bracket to the Feeder Assembly and remove the Bracket (Figure 2).

  • Page 242: Fig 1-60 Multi-Sheet Bypass Feeder Feed Roller

    Sensor Assembly to the Feeder Assembly and move the Assembly out of the way. Remove the KL-clip securing the Multi-sheet Bypass Feeder Feed Roller to the Feed Shaft, and slide the Feed Roller off of the shaft. 1-220 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 243: Fig 1-61 Multi-Sheet Bypass Feeeder Pick Roller

    RRP 1-31 Multi-sheet Bypass Feeder Pick Roller (PL 4.3) Pick Roller S4525-104 Multi-sheet Bypass Feeder Gate Fig 1-61 Multi-sheet Bypass Feeeder Pick Roller Removal Remove Multi-sheet Bypass Feeder Feed Roller (RRP 1-30). Remove the E-ring securing the Multi-sheet Bypass Feeder Gate to the shaft and remove the Gate.

  • Page 244: Fig 1-62 Multi-Sheet Bypass Feeder Pick Roller Assembly

    RRP 1-32 Multi-sheet Bypass Feeder Pick Roller Assembly (PL 4.3) Multi-sheet Bypass Feeder Rear Bearing Multi-sheet Bypass Feeder Front Bearing S4525-105 Fig 1-62 Multi-sheet Bypass Feeder Pick Roller Assembly 1-222 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 245 Removal Remove the Multi-sheet Bypass Feeder Feed Clutch (RRP 1-29). Remove Multi-sheet Bypass Feeder Feed Roller (RRP 1-30). Remove the E-ring securing the Multi-sheet Bypass Feeder Front Feed Bearing to the Feed Shaft, and remove the Bearing. Before performing Step (4) below, take note of the Feed Spring Warning and its positioning before sliding out the Feed Shaft.

  • Page 246: Fig 1-63 Multi-Sheet Bypass Feeder Pad

    RRP 1-33 Multi-sheet Bypass Feeder Pad (PL 4.2) Multi-sheet Bypass Spring Feeder Paper Guide Multi-sheet Bypass Feeder Pad S4525-106 Fig 1-63 Multi-sheet Bypass Feeder Pad 1-224 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 247 Removal Remove the Multi-sheet Bypass Feeder (RRP 1-25). Remove the Multi-sheet Bypass Feeder Top Cover per Step 3 of RRP 1-26. Remove the Multi-sheet Bypass Feeder Feed Roller (RRP 1-30). Remove the Multi-sheet Bypass Feeder Pick Roller (RRP 1-31). Turn the Multi-sheet Bypass Feeder upside down. Remove the KL-clip securing the Multi-sheet Bypass Feeder Pad Pin to the Feeder, and slide the Pin out of the Multi-sheet Bypass Feeder Pad.

  • Page 248: Fig 1-64 Multi-Sheet Bypass Feeder Friction Clutch

    Make sure the Clutch and Spacer mesh. Use the E-ring (removed in Step 2 above) to secure the Clutch to the shaft. Reinstall the Top Cover. Reinstall the Multi-sheet Bypass Feeder Tray Assembly (RRP 1-26). 1-226 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 249: Fig 1-65 Multi-Sheet Bypass Feeder No-Paper Sensor Assembly

    RRP 1-35 Multi-sheet Bypass Feeder No-Paper Sensor Assembly (PL 4.3) (P/J108) S4525-108 Fig 1-65 Multi-sheet Bypass Feeder No-Paper Sensor Assembly Removal Remove the Multi-sheet Bypass Feeder Assembly (RRP 1-25). Loosen the machine screw securing the Multi-sheet Bypass Feeder No-Paper Sensor Bracket to the Feeder Assembly, and lift the Sensor Bracket off of the Feeder.

  • Page 250: Fig 1-66 Left Middle Cover Assembly

    RRP 1-36 Left Middle Cover Assembly (PL 5.1) Pinch Roller Bracket Figure 1 Pinch Roller Figure 2 S4525-109 Fig 1-66 Left Middle Cover Assembly 1-228 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 251 Removal Remove the Multi-sheet Bypass Feeder Support Assembly (RRP 1-27). Exercise caution in removing the Left Middle Cover after Caution removing the four screws. The Pinch Roller Assembly is loose and can be damaged from dropping. Remove the four self-tapping screws securing the Left Middle Cover to the printer frame, and remove the Cover.

  • Page 252: Fig 1-67 Registration Clutch

    RRP 1-41 Registration Clutch (PL 6.1) S4525-113 Fig 1-67 Registration Clutch 1-230 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 253 Removal Remove the Rear Cover (RRP 1-5). Remove the Flywheel Assembly (RRP 1-65) Disconnect P/J200 from the Registration Clutch. Remove the E-ring securing the Registration Clutch to the Registration Shaft. Push out on the shaft latch as you slide the Clutch off of the shaft. Replacement Slide the Registration Clutch onto the shaft.

  • Page 254: Fig 1-68 Left Upper Cover Assembly

    RRP 1-42 Left Upper Cover Assembly (PL 6.2) Front Shaft Hinge Pin Rear Shaft Hinge Pin S4535-114 Fig 1-68 Left Upper Cover Assembly 1-232 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 255 Removal Remove the Rear Cover (RRP 1-5). Remove the Duplex Module, if installed. Open the Left Upper Cover. When the Left Upper Cover is open, the Bias Transfer Roller is Caution exposed. Do not touch the Bias Transfer Roller. Grease and dirt on the Bias Transfer Roller, or physical damage to the Bias Transfer Roller will affect print quality.

  • Page 256: Fig 1-69 Left Chute Assembly

    Push down on the front of the Chute Assembly and use the blade of a small screwdriver to free the front latches from the Cover. Remove the Left Chute Assembly. Release the two springs and remove the Registration Roller Assembly from the Chute Assembly. 1-234 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 257: Fig 1-70 Registration Chute

    RRP 1-44 Registration Chute (PL 6.1) Registration Sensor S4525-116 Fig 1-70 Registration Chute Removal Remove the Left Upper Cover Assembly (RRP 1-42). Remove the Registration Clutch (RRP 1-41). Open the Front Cover. Remove the black machine screw securing the Inner Cover to the printer frame, and remove the Inner Cover.

  • Page 258: Fig 1-71 Registration Roller Assembly

    Remove the E-ring from the rear of the Registration Roller Shaft. Slide the Shaft to the rear to free the front of the Shaft from the front bearing. Remove the Registration Roller Assembly. 1-236 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 259: Fig 1-72 Laser Scanner Assembly

    RRP 1-47 Laser Scanner Assembly (PL 7.1) S4525-118 Fig 1-72 Laser Scanner Assembly Removal Remove the Low Voltage Power Supply (RRP 1-67). Disconnect the J106, J207, J407, and J430 from the Laser Scanner. Remove the three screws that secure the Laser Scanner to the printer frame. Lift the Laser Scanner Assembly off of the printer frame.

  • Page 260: Fig 1-73 Toner Sensor

    Use the flat blade of a screwdriver to pry up the front end of the Toner Sensor (refer to the figure). When the front end is freed, remove the Sensor along with the attached wire harness. 1-238 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 261: Fig 1-74 Laser Print Cartridge Interlock Switch

    RRP 1-51 Laser Print Cartridge Interlock Switch (PL 7.2) (P/J233) (P/J232) (P/J234) S4525-122 Fig 1-74 Laser Print Cartridge Interlock Switch Removal Remove the Laser Print (EP) Cartridge. Remove the Rear Cover (RRP 1-5). Disconnect J232 and J233 from the Laser Print Cartridge Interlock Switch. Disconnect P/J234 from the Interlock Switch wire harness.

  • Page 262: Fig 1-75 Fuser Drive Assembly

    RRP 1-53 Fuser Drive Assembly (PL 10.2) S4525-124 Fig 1-75 Fuser Drive Assembly 1-240 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 263 Removal Remove the Fuser Assembly. Remove the Laser Print (EP) Cartridge. Remove the Offset Exit Unit Assembly (RRP 1-54). Disconnect J31, J32, and J33 from the AC Driver Board and free the wire harness from the harness clips. Disconnect J802 from High Voltage Power Supply-R2 and free the wire harness from the harness clips.

  • Page 264: Fig 1-76 Offset/Exit Assembly

    Assembly, next to the solenoid, and two screws at the rear of the Assembly) securing the Offset Unit to the printer frame. Lift the Offset Unit up and off of the printer frame. 1-242 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 265: Fig 1-77 Exit Drive Assembly

    RRP 1-55 Exit Drive Assembly (PL 9.4) (P/J602) S4525-126 Fig 1-77 Exit Drive Assembly Removal Disconnect P/J602. Remove the three black machine screws securing the Exit Drive Assembly to the Offset Assembly. Carefully pull the Exit Drive Assembly straight out and away from the Offset Unit.

  • Page 266: Fig 1-78 Exit Gate Solenoid

    Use the two screws (removed in Step 4 above) to secure the Solenoid to the Assembly. Reconnect J210. Secure the wire harness to the harness clips. Reinstall the Fuser Cover (RRP 1-1). 1-244 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 267: Fig 1-79 Offset Motor

    RRP 1-57 Offset Motor (PL 9.1) Offset Roller Rack S4525-128 Fig 1-79 Offset Motor Removal Remove the Fuser Cover (RRP 1-1). Remove the two black machine screws securing the Motor to the Offset Assembly. Do not remove the brass colored screws when removing the Offset Caution Motor.

  • Page 268: Fig 1-80 Full Stack Sensor

    S4525-129 Fig 1-80 Full Stack Sensor Removal Remove the Fuser Cover (RRP 1-1). Disconnect P/J133. Remove the two screws securing the Full Stack Sensor Switch Assembly Bracket and remove the Assembly. 1-246 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 269: Fig 1-81 Offset Roller Assembly

    RRP 1-59 Offset Roller Assembly (PL 9.2) S4525-130 Fig 1-81 Offset Roller Assembly Removal Remove the Exit Drive Assembly (RRP 1-55) Remove the Offset Motor (RRP 1-57). Remove the Face Up Exit Sensor (RRP 1-58). Remove the gear located at the end of the Roller Assembly. Remove the KL-clip securing the Roller shaft to the rear bearing.

  • Page 270: Fig 1-82 Lower Chute Assembly

    Assembly frame, and separate the Lower Chute from the frame. Release P/J104 wire harness from the harness clips. Squeeze the latches to unlock the Fuser Exit Sensor, and remove the Sensor from the Lower Chute. 1-248 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 271: Fig 1-83 Upper Chute Assembly

    RRP 1-61 Upper Chute Assembly (PL 9.3) S4525-132 Fig 1-83 Upper Chute Assembly Removal Remove the Offset Roller Assembly (RRP 1-59). Disconnect P/J133 and free the wire harness from the harness clips. Disconnect P/J210 and free the wire harness from the harness clips. Open the Upper Chute Assembly and loosen, do not remove, the rear black machine screw securing the Face Up Lower Chute to the frame.

  • Page 272: Fig 1-84 Exit Roller Assembly

    Remove the E-ring securing the front of the Exit Roller shaft to the Assembly frame, and remove the front bearing. Slide the shaft to the rear, and remove the shaft from the Assembly. 1-250 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 273 RRP 1-63 Face Up Exit Sensor (PL 9.3) (P/J109) Face Up Exit Sensor S4525-134 Fig 1-85 Face Up Exit Sensor Removal Remove the Fuser Cover (RRP 1-1). Disconnect P/J109 and remove the wire harness from the harness clips. Squeeze the latches to unlock the Face Up Exit Sensor, and remove the Sensor from the Offset Assembly.

  • Page 274: Fig 1-86 Inverter Clutches

    Slide the Clockwise Gear off of the Clockwise Clutch. Lift the Counter-Clockwise Clutch off of the bearing, and remove the Clutch. Lift the Clockwise Clutch off of the bearing, and remove the Clutch. 1-252 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 275: Fig 1-87 Flywheel Assembly

    RRP 1-65 Flywheel Assembly (PL 10.1) Flywheel S4525-136 Fig 1-87 Flywheel Assembly Removal Remove the Rear Cover (RRP 1-5). Remove the black machine screw securing the Flywheel to the Drive Assembly shaft and pull the Flywheel off of the shaft. Volume 1 / Print Engine - FRU RRPs 1-253...

  • Page 276: Fig 1-88 Main Drive Assembly

    RRP 1-66 Main Drive Assembly (PL 10.1) Figure 1 Exit Gear Remove Self-Tapping Screws Remove Machine Screw Figure 2 S4525-137 Fig 1-88 Main Drive Assembly 1-254 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 277 Removal Remove the Laser Print (EP) Cartridge. Do not attempt to remove the Main Drive Assembly without first Caution removing the Laser Print (EP) Cartridge. Remove the Rear Cover (RRP 1-5). Open the Left Upper Cover. Remove the Flywheel Assembly (RRP 1-65). Remove the Left Cover Interlock Switch Assembly (RRP 1-71).

  • Page 278: Fig 1-89 Low Voltage Power Supply Assembly

    RRP 1-67 Low Voltage Power Supply Assembly (PL 11.1) LVPS Cover System Controller Assembly Figure 1 Figure 2 Figure 3 S4525-138 Fig 1-89 Low Voltage Power Supply Assembly 1-256 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 279 Removal Remove the Fuser cover (RRP 1-1). Remove the Top Cover Assembly (RRP 1-2). Remove the Front Inner Cover (RRP 1-4) Remove the Right Cover (RRP 1-6). Remove the four machine screws securing the System Controller Assembly to the Low Voltage Power Supply, and tilt the System Controller Assembly back and out of the way (Figure 1).

  • Page 280: Fig 1-90 Ac Driver Board

    Board to the frame and remove the Bracket and the Plate. Press in on the two latches securing the top of the AC Driver Board to the printer frame and remove the board. 1-258 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 281 RRP 1-69 High Voltage Power Supply (PL 11.2) S4525-140 Fig 1-91 High Voltage Power Supply Removal Remove the Input/Output Board (RRP 1-70). Disconnect J500, P701, P702 and BTR (Bias Transfer Roller) from the High Voltage Power Supply Board. The board is easily broken. Use care when removing the P/Js from Caution the High Voltage Power Supply Board.
  • Page 282 Remove the four machine screws securing the Input/Output Board Bracket to the printer frame and remove the Bracket. Remove the six machine screws securing the Input/Output Board to the Bracket and remove the board. 1-260 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 283: Fig 1-93 Left Cover Interlock Switch Assembly

    RRP 1-71 Left Cover Interlock Switch Assembly (PL 11.2) (J232) (J233) S4525-142 Fig 1-93 Left Cover Interlock Switch Assembly Removal Remove the Rear Cover Assembly (RRP 1-5). Disconnect J232 and J233 from the Interlock Switch. Remove the screw that secures the Interlock Switch Bracket to the printer frame, and pull the Assembly out of the printer.
  • Page 284 Lift the Print Engine Controller Board out of the System Controller Assembly. Remove the U9 EEPROM from the Print Engine Controller Board and retain. Replacement Install the U9 EEPROM from the “old” Print Engine Controller Board onto the “new” board. 1-262 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 285 Reinstall the Print Engine Controller Board onto the System Controller Assembly. Align the board such that J406 faces the System Controller Board location. Reinstall the two 7mm nuts onto J406 and the six mounting screws (removed in step 6 above) loosely. When all screws have been started, tighten them. Reconnect J400, J402, J403, J404, J408, J411 and the video plug (P409) into their respective connectors on the Print Engine Controller Board.

  • Page 286: Fig 1-95 System Controller

    Panel to the System Controller Box. Slide the System Controller Board out of the System Controller Box. Place the System Controller Board and the attached Drawer Panel on a grounded anti-static work mat. 1-264 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 287: Fru Parts List

    FRU Parts List ® This topic provides a list of Field Replaceable Units for the DocuPrint N4525 Network Laser Printer. Changes to the printer may be made to accommodate improved components as they become available. When ordering parts and/or supplies, it is important to include the following information: Component’s part number, Printer type or model number,...

  • Page 288: Fig 1-97 Top Cover Assembly

    PL 1.1 Top Cover Assembly (J204) PL11.4.13 (NJ417) PL11.3.16 S4525-157 Fig 1-97 Top Cover Assembly 1-266 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 289: Table 1-108 Pl 1.1 Top Cover Assembly

    Table 1-108 PL 1.1 Top Cover Assembly. ID No. Part Number Name / Description 802E25441 Cover, Top 003E52030 Stopper 802E08700 Cover, Connector 802K18182 Assembly, Control Panel NOTE: When ordering this part, be certain to order the appropriate item #8, also. 802E08760 Cover, Fuser 127K19110...

  • Page 290: Fig 1-98 Font Cover

    PL 1.2 Front Cover S4525-158 Fig 1-98 Font Cover 1-268 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 291: Table 1-109 Pl 1.2 Front Cover

    Table 1-109 PL 1.2 Front Cover ID No. Part Number Name / Description 802K25941 Assembly, Front Cover 830E44250 Hinge 802E08421 Cover, Inner Front 054K15471 Assembly, Duct Plate, Cover Stud, Docking (part of 99) Bracket, Left Docking (part of 99) Bracket, Rear Docking (part of 99) Switch, Front Cover Interlock (part of 11) Harness Assembly, Front Interlock (part of 11) [FS237 <>...

  • Page 292: Fig 1-99 Rear, Left, And Right Covers

    PL 1.3 Rear, Left, and Right Covers S4525-159 Fig 1-99 Rear, Left, and Right Covers 1-270 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 293: Table 1-110 Pl 1.3 Rear, Left And Right Covers

    Table 1-110 PL 1.3 Rear, Left and Right Covers ID No. Part Number Name / Description 802E08370 Cover, Inner Left Hand 802E08581 Cover, Right Hand 802K10221 Cover Assembly, Rear 048E37410 Cover, Rear Bottom Volume 1 / Print Engine - FRU Parts Lists 1-271...

  • Page 294: Fig 1-100 Tray Unit - Paper Stack

    PL 2.1 Tray Unit - Paper Stack S4525-160 Fig 1-100 Tray Unit - Paper Stack 1-272 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 295: Table 1-111 Pl 2.1 Tray Unit - Paper Stack

    Table 1-111 PL 2.1 Tray Unit - Paper Stack ID No. Part Number Name / Description 109R00504 Tray Assembly (with 2~19 & PL 2.2) Plate, Bottom (part of 1) Pad, Bottom (part of 1) Plate, Tongue (part of 1) Shaft Assembly, Tongue (part of 1) Bearing (part of 1) Guide Assembly, Side (part of 1) Lever (part of 1)

  • Page 296: Fig 1-101 Tray Unit - End Guide

    PL 2.2 Tray Unit - End Guide Fig 1-101 Tray Unit - End Guide 1-274 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 297: Table 1-112 Pl 2.2 Tray Unit - End Guide

    Table 1-112 PL 2.2 Tray Unit - End Guide ID No. Part Number Name / Description Guide Assembly, End (part of PL 2.1, item 1) Plate Assembly, End (part of PL 2.1, item 1) Assembly, Actuator (part of PL 2.1, item 1) Assembly, Cable (part of PL2.1, item 1) Spring, Tension (part of PL 2.1, item 1) Pulley (part of PL 2.1, item 1)

  • Page 298: Fig 1-102 Tray Unit - Paper Stack (Custom)

    PL 2.3 Tray Unit - Paper Stack (Custom) PL2.4.1 PL 2.4.6 S4525-162 Fig 1-102 Tray Unit - Paper Stack (Custom) 1-276 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 299: Table 1-113 Pl 2.3 Tray Unit - Paper Stack (Custom)

    Table 1-113 PL 2.3 Tray Unit - Paper Stack (Custom) ID No. Part Number Name / Description 097S02562 Tray Assembly (Custom - with 2~21 & PL 2.4) Plate, Bottom (part of 1) Pad, Bottom (part of 1) Plate, Tongue (part of 1) Shaft Assembly, Tongue (part of 1) Bearing (part of 1) Guide Assembly, Side (Custom) (part of 1)

  • Page 300: Fig 1-103 Tray Unit - End Guide (Custom)

    PL 2.4 Tray Unit - End Guide (Custom) S4525-163 Fig 1-103 Tray Unit - End Guide (Custom) 1-278 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 301: Table 1-114 Pl 2.4 Tray Unit - End Guide (Custom)

    Table 1-114 PL 2.4 Tray Unit - End Guide (Custom) ID No. Part Number Name / Description Guide, Paper End (part of PL 2.3, item 1) Label, End-Guide (part of PL 2.3, item 1) Washer, Nylon (part of PL 2.3, item 1) Pinslide (Custom) (part of PL 2.3, item 1) Spring, Torsion (part of PL 2.3, item 1) Plate Assembly, End (part of PL 2.3, item 1)

  • Page 302: Fig 1-104 Tray Interface - Tray 1

    PL 3.1 Tray Interface - Tray 1 S4525-164 Fig 1-104 Tray Interface - Tray 1 1-280 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 303: Table 1-115 Pl 3.1 Tray Interface - Tray 1

    Table 1-115 PL 3.1 Tray Interface - Tray 1 ID No. Part Number Name / Description 110K07740 Switch Assembly, Paper Size 127K20662 Motor Assembly Actuator, Sensor (part of 99) Support, Actuator (part of 99) 107E08680 Sensor, Photo Interrupter (J103) - Lift Up Sensor) (J102) - No Paper Sensor 054K09020 Chute Assembly, Front, (for Tray 1 only)

  • Page 304: Fig 1-105 Paper Pick Up - Tray 1

    PL 3.2 Paper Pick Up - Tray 1 98 (with 6, Qty 6) 99 (1~4) S4525-165A Fig 1-105 Paper Pick Up - Tray 1 1-282 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 305 Table 1-116 PL 3.2 Paper Pick Up - Tray 1 ID No. Part Number Name / Description Gear, 46T (part of 99) Clutch Assembly (part of 99) Gear, 28T (part of 99) [for Tray 1 only] Clutch, One-Way (part of 99) [for Tray 1 only] 050K43520 Feeder Assembly (with 6~14) Roller Assembly (part of 5)

  • Page 306: Fig 1-106 Retard And Take Away - Tray 1

    PL 3.3 Retard and Take Away - Tray 1 S4525-166 Fig 1-106 Retard and Take Away - Tray 1 1-284 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 307 Table 1-117 PL 3.3 Retard and Take Away Assembly - Tray 1 ID No. Part Number Name / Description Retard Assembly, (with 2~8) {part of 98} Spacer, Retard {part of 1} Shaft Assembly, Retard (part of item 1) Bearing (part of item 1) Roller Assembly (part of item 1) Spacer (part of item 1) Clutch Assembly, Friction...

  • Page 308: Fig 1-107 Tray Interface - Tray 2

    PL 3.4 Tray Interface - Tray 2 S4525-167 Fig 1-107 Tray Interface - Tray 2 1-286 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 309: Table 1-118 Pl 3.4 Tray Interface - Tray 2

    Table 1-118 PL 3.4 Tray Interface - Tray 2 ID No. Part Number Name / Description 110K07740 Switch Assembly, Paper Size 127K20662 Motor Assembly Actuator, Sensor (part of item 99) Support, Actuator (part of item 99) 107E08680 Photo Interrupter (No Paper Sensor / Lift Up Sensor) 054K09030 Chute Assembly, Front, (for Tray 2 only) 003E23672...

  • Page 310: Fig 1-108 Paper Pick Up - Tray 2

    PL 3.5 Paper Pick Up - Tray 2 S4525-168 Fig 1-108 Paper Pick Up - Tray 2 1-288 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 311 Table 1-119 PL 3.5 Paper Pick Up Assembly - Tray 2 ID No. Part Number Name / Description Gear, 46T {part of 97} Clutch Assembly {part of 97} Gear, 28T (for Tray 2 only) {part of 97} 013E86260 Bearing, Feeder (for Tray 2 and High Capacity Feeder only) {part of 97} 050K43520 Feeder Assembly (with 6-14)

  • Page 312: Fig 1-109 Retard And Take Away - Tray 2

    PL 3.6 Retard and Take Away - Tray 2 1 (with 2~8) 98 (1, 9~15, & 17) S4525-169 99 (9, 16) Fig 1-109 Retard and Take Away - Tray 2 1-290 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 313 Table 1-120 PL 3.6 Retard and Take Away Assembly - Tray 2 ID No. Part Number Name / Description Retard Assembly, (with 2~8), {part of item 98} Gear, 22T {part of item 1}, {part of item 99} Shaft Assembly, Retard {part of item 1} Bearing {part of item 1} Roller Assembly {part of item 1} Spacer {part of item 1}...

  • Page 314: Fig 1-110 Feed Drive Transmission

    PL 3.7 Feed Drive Transmission S4525-170 Fig 1-110 Feed Drive Transmission 1-292 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 315: Table 1-121 Pl 3.7 Feed Drive Transmission

    Table 1-121 PL 3.7 Feed Drive Transmission ID No. Part Number Name / Description Gear, 30T {part of item 99} Support Assembly {part of item 99} Gear, 31T {part of item 99} Gear, 33T {part of item 99} Gear. 16/22T {part of item 99} Link Assembly {part of item 99} Spring, Torsion {part of item 99} Bearing, {part of item 99}...

  • Page 316: Fig 1-111 Multi-Sheet Bypass Feeder And Duplex Support

    PL 4.1 Multi-sheet Bypass Feeder and Duplex Support S4525-171 Fig 1-111 Multi-sheet Bypass Feeder and Duplex Support 1-294 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 317: Table 1-122 Pl 4.1 Multi-Sheet Bypass Feeder And Duplex Module Support

    Table 1-122 PL 4.1 Multi-sheet Bypass Feeder and Duplex Module Support ID No. Part Number Name / Description 048E37370 Cover, Front 048K58760 Cover, Rear Assembly 068K11630 Support Assembly, Multi-Sheet Bypass Feeder / Duplex Module 162K20380 Harness Assembly, Drawer (J603<>J604) Spring, Front Damper Spring, Rear Damper 059K14753 Feeder Assembly, Multi-sheet Bypass (with 8 - 12 &...

  • Page 318: Fig 1-112 Multi-Sheet Bypass Feeder Assembly (Mbf)

    PL 4.2 Multi-sheet Bypass Feeder Assembly (MBF) D4525-172 Fig 1-112 Multi-sheet Bypass Feeder Assembly (MBF) 1-296 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 319: Table 1-123 Pl 4.2 Multi-Sheet Bypass Feeder Assembly

    Table 1-123 PL 4.2 Multi-sheet Bypass Feeder Assembly ID No. Part Number Name / Description Feeder Assembly, Multi-sheet Bypass (with 2 - 17 & PL 4.3) {part of PL 4.1} Gear, 16/22 {part of item 1 & PL 4.1} Link Assembly {part of item 1 & PL 4.1} Spring, Torsion {part of item 1 &...

  • Page 320: Fig 1-113 Upper Feeder Assembly

    PL 4.3 Upper Feeder Assembly S4525-173 Fig 1-113 Upper Feeder Assembly 1-298 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 321: Table 1-124 Pl 4.3 Upper Feeder Assembly

    Table 1-124 PL 4.3 Upper Feeder Assembly ID No. Part Number Name / Description Feeder Assembly, Upper (with 2~26) {part of PL 4.2, item 1} 121K82880 Clutch Assembly {part of item 1} Bearing {part of item 1} Shaft Assembly, Feed {part of item 1} Gear, Spur, 40T {part of item 1} Bearing {part of item 1} Spring, Torsion {part of item 1}...

  • Page 322: Fig 1-114 Multi-Sheet Bypass Feeder Tray Assembly

    PL 4.4 Multi-sheet Bypass Feeder Tray Assembly S4525-174 Fig 1-114 Multi-sheet Bypass Feeder Tray Assembly 1-300 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 323: Table 1-125 Pl 4.4 Multi-Sheet Bypass Feeder Tray Assembly

    Table 1-125 PL 4.4 Multi-sheet Bypass Feeder Tray Assembly ID No. Part Number Name / Description 050K42631 Tray Assembly, Multi-sheet Bypass Feeder (with 2~9) Pad {part of item 1} Guide, Side {part of item 1} 130K83360 Size Sensor Assembly, Multi-sheet Bypass Feeder {part of item 1} Spring, Sensor {part of item 1} Link, Sensor {part of item 1}...

  • Page 324: Fig 1-115 Tray 1 Frame And Left Cover

    PL 5.1 Tray 1 Frame and Left Cover S4525-175 Fig 1-115 Tray 1 Frame and Left Cover 1-302 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 325: Table 1-126 Pl 5.1 Tray 1 Frame And Left Cover

    Table 1-126 PL 5.1 Tray 1 Frame and Left Cover ID No. Part Number Name / Description 068K79283 Bracket Assembly, Pinch (with 2 - 7) Spring, Exit {part of item 1} Spring, Compression {part of item 1} Bearing, In {part of item 1} Bearing {part of item 1} Roller Assembly, Pinch {part of item 1} Bracket, Pinch {part of item 1}...

  • Page 326: Fig 1-116 Tray 2 Frame And Left Cover

    PL 5.2 Tray 2 Frame and Left Cover S4525-176.ai Fig 1-116 Tray 2 Frame and Left Cover 1-304 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 327: Table 1-127 Pl 5.2 Tray 2 Frame And Left Cover

    Table 1-127 PL 5.2 Tray 2 Frame and Left Cover ID No. Part Number Name / Description 048K55751 Cover Assembly, Left Hand (with 2, 3, 9~11, 14 and 23) Cover, Left Hand {part of item 1} 068K83512 Bracket Assembly, Pinch (with 4~8 and 21) {part of item 1} Bearing, Out {part of item 3} Bearing, In {part of item 3}...
  • Page 328 PL 6.1 Registration S4525-177 Fig 1-117 Registration 1-306 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 329: Table 1-128 Pl 6.1 Registration Section

    Table 1-128 PL 6.1 Registration section ID No. Part Number Name / Description 121K83190 Clutch Assembly, Registration Bearing 022K33900 Roller Assembly, Registration 054K17501 Chute Assembly, Registration (with 5 & 6) Chute, Registration {part of item 4} Eliminator, Static {part of item 4} 130E81311 Sensor, Registration 103K80192...

  • Page 330: Fig 1-118 Left Upper Cover Assembly

    PL 6.2 Left Upper Cover Assembly S4525-178 Fig 1-118 Left Upper Cover Assembly 1-308 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 331: Table 1-129 Pl 6.2 Upper Left Cover Assembly

    Table 1-129 PL 6.2 Upper Left Cover Assembly ID No. Part Number Name / Description Shaft, Hinge Shaft, Hinge Rear 802K10631 Cover Assembly, Left Hand (with 4~14 and PL 6.3) Chute, Lower {part of item 3} Guide, Paper {part of item 3} Spring, Compression {part of item 3} 054K88605 Chute Assembly, Left Hand (with 8 - 13)

  • Page 332: Fig 1-119 Transport Chute Assembly

    PL 6.3 Transport Chute Assembly S4525-179 Fig 1-119 Transport Chute Assembly 1-310 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 333: Table 1-130 Pl 6.3 Transport Chute Assembly

    Table 1-130 PL 6.3 Transport Chute Assembly ID No. Part Number Name / Description Spring, Bias Transfer Roller, In {part of item 18} Chute, Transport {part of item 18} Plate, Eliminator {part of item 18} Sleeve, Bias Transfer Roller {part of item 18} Spring, Rod {part of item 18} Rod, {part of item 18} Chute Assembly, Inlet {part of item 18}...
  • Page 334 PL 7.1 Laser Scanner Assembly S4525-180 Fig 1-120 Laser Scanner 1-312 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 335: Table 1-131 Pl 7.1 Laser Scanner Assembly

    Table 1-131 PL 7.1 Laser Scanner Assembly ID No. Sub-ID Part Number Name / Description 062K09874 Laser Scanner Assembly Volume 1 / Print Engine - FRU Parts Lists 1-313...

  • Page 336: Fig 1-121 Xerography And Development

    PL 7.2 Xerography and Development S4525-181 Fig 1-121 Xerography and Development 1-314 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 337: Table 1-132 Pl 7.2 Xerography And Development Section

    Table 1-132 PL 7.2 Xerography and Development section ID No. Part Number Name / Description 022K57070 Roller Assembly, Bias Transfer (with 2 - 6) (Alt. 022K61720) Lever, Bias Transfer Roller, OUT {part of item 1} Roller, Tracking, Bias Transfer Roller {part of item 1} Roller, Bias Transfer Roller {part of item 1} Spacer, Bias Transfer Roller {part of item 1} Lever, Bias Transfer Roller, IN {part of item 1}...
  • Page 338 PL 8.1 Fuser Assembly S4525-182 Fig 1-122 Fuser Assembly 1-316 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 339: Table 1-133 Pl 8.1 Fuser Assembly

    Table 1-133 PL 8.1 Fuser Assembly ID No. Part Number Name / Description 126K10638 Fuser Assembly, 115 VAC (Customer Replaceable Unit) (with 2) 126K10648 Fuser Assembly, 220 VAC (Customer Replaceable Unit) (with 2) Holder, Nip-Clip Note: Remove and discard the two Nip-Clip Holders when installing a replacement Fuser Assembly.

  • Page 340: Fig 1-123 Lower Exit Chute

    PL 9.1Lower Exit Chute 24 (with 16~19) S4525-183 Fig 1-123 Lower Exit Chute 1-318 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 341: Table 1-134 Pl 9.1 Lower Exit Chute

    Table 1-134 PL 9.1 Lower Exit Chute ID No. Part Number Name / Description 022K61824 Offset/Exit Assembly (with 2~22, PL 9.2, PL 9.3 and PL 9.4) 121K82870 Solenoid Assembly {part of item 1} Link, Solenoid {part of item 1} Spring {part of item 1} 127K18861 Motor Assembly, Offset {part of item 1} Lower Assembly, Chute, Offset (with 7 - 15) {part of...

  • Page 342: Fig 1-124 Offset Roller Assembly

    PL 9.2 Offset Roller Assembly S4525-184.ai Fig 1-124 Offset Roller Assembly 1-320 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 343: Table 1-135 Pl 9.2 Offset Roller Assembly

    Table 1-135 PL 9.2 Offset Roller Assembly ID No. Part Number Name / Description Bearing {part of PL 9.1, item 1} 022K35430 Roller Assembly, Face Up Tray Exit {part of PL 9.1, item 1} Gear, 19T {part of PL 9.1, item 1} 022K57200 Roller Assembly, Offset (with 5 - 12) {part of PL 9.1, item 1}...

  • Page 344: Fig 1-125 Upper Exit Chute Assembly

    PL 9.3 Upper Exit Chute Assembly S4525-185 Fig 1-125 Upper Exit Chute Assembly 1-322 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 345: Table 1-136 Pl 9.3 Upper Exit Chute Assembly

    Table 1-136 PL 9.3 Upper Exit Chute Assembly ID No. Part Number Name / Description 054K08504 Chute Assembly, Upper (with 2~16) {part of PL 9.1, item 1} 110K94651 Switch Assembly, Face Up Exit Sensor {part of item 1} Plate, Tie {part of item 1} Spring, Plate {part of item 1} Spring Assembly, Pinch {part of item 1} Spring Assembly, Pinch {part of item 1}...

  • Page 346: Fig 1-126 Exit Drive Assembly

    PL 9.4 Exit Drive Assembly S4525-186 Fig 1-126 Exit Drive Assembly 1-324 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 347: Table 1-137 Pl 9.4 Exit Drive Assembly

    Table 1-137 PL 9.4 Exit Drive Assembly ID No. Part Number Name / Description 068K20660 Bracket Assembly, Drive (with 2 - 17) {part of PL 9.1, item 1} Support, Exit Drive {part of item 1} Pulley, Exit Drive Idler {part of item 1} Gear, Exit 1 {part of item 1} Gear, Exit 2 {part of item 1} Bracket, Exit Gear 2 {part of item 1}...

  • Page 348: Fig 1-127 Main Drive Assembly

    PL 10.1 Main Drive Assembly Fig 1-127 Main Drive Assembly 1-326 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 349: Table 1-138 Pl 10.1 Main Drive Assembly

    Table 1-138 PL 10.1 Main Drive Assembly ID No. Part Number Name / Description 007K85362 Drive Assembly, Main Clamp, Harness 020K98171 Flywheel Assembly Flange, Flywheel Support, Harness Bracket Clamp, Harness Clamp, Harness Volume 1 / Print Engine - FRU Parts Lists 1-327...

  • Page 350: Fig 1-128 Fuser Drive Assembly

    PL 10.2 Fuser Drive Assembly 1 (with 2~9, 14 & 15) S4525-188 Fig 1-128 Fuser Drive Assembly 1-328 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 351: Table 1-139 Pl 10.2 Fuser Drive Assembly

    Table 1-139 PL 10.2 Fuser Drive Assembly ID No. Part Number Name / Description 068K18272 Frame Assembly, Rear Exit (with 2- 9, 14 & 15) Gear, 22T {part of item 1} Spring {part of item 1} Bracket Assembly {part of item 1} Bracket {part of item 1} Spring, Exit {part of item 1} Bracket {part of item 1}...

  • Page 352: Fig 1-129 Power Unit

    PL 11.1 Power Unit S4525-189 Fig 1-129 Power Unit 1-330 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 353: Table 1-140 Pl 11.1 Power Unit

    Table 1-140 PL 11.1 Power Unit ID No. Part Number Name / Description 105K15540 Power Unit (110 VAC), with 6 105K15550 Power Unit (220 VAC), with 6 Cover Assembly, Low Voltage Power Supply Harness Assembly, AC Main (J3, J1<>J13, J30, P20) Connector, Outlet Bracket, Finisher 127K21460...

  • Page 354: Fig 1-130 High Voltage Power Supply And Input/Output Board

    PL 11.2 High Voltage Power Supply and Input/Output Board S4525-190 Fig 1-130 High Voltage Power Supply and Input/Output Board 1-332 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 355: Table 1-141 Pl 11. 2 High Voltage Power Supply And I/O Board

    Table 1-141 PL 11. 2 High Voltage Power Supply and I/O Board ID No. Part Number Name / Description 160K62830 Board, AC, Driver, 220 VAC 160K62400 Board, AC, Driver, 110 VAC Bracket, System Controller, Rear 105K15631 High Voltage Power Supply, R1 101K35030 Chassis Assembly, Input/Output (Input/Output) (with 5 &...

  • Page 356: Fig 1-131 System Controller Assembly

    PL 11.3 System Controller Assembly Fig 1-131 System Controller Assembly 1-334 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 357: Table 1-142 Pl 11.3 System Controller Assembly

    Table 1-142 PL 11.3 System Controller Assembly ID No. Part Number Name / Description 101K37191 Assembly, System Controller (with 2 - 9, 11, 12, and Bracket Assembly, Board {part of item 1} 160K74034 Board Assembly, Print Engine Controller 110 VAC {part of item 1} 160K74044 Board Assembly, Print Engine Controller 220 VAC...

  • Page 358: Fig 1-132 Wiring Harness

    PL 11.4 Wiring Harness S4525-192 Fig 1-132 Wiring Harness 1-336 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 359: Table 1-143 Pl 11.4 Wiring Harness

    Table 1-143 PL 11.4 Wiring Harness ID No. Part Number Name / Description Harness Assembly, DC Main Low Voltage Power Supply: (J400/J450<>J502/J504/J505/J506/ System Controller Board: J452/J453<>J402/J403 Laser Scanner: J411<>P220/P237?J106/J207/P234/J407/P499/ J510 Harness Assembly, 1TM, Rear (J467<>J140/J141/J142/P607/P240/J241) Harness Assembly, Tray (J466<>J613A/B) Harness Assembly, Bottom (J465<>J101/J203//J603) Harness Assembly, Duplex (J463)<>J611A/B) Harness Assembly, Output (J464<>J612A/B) Harness Assembly (J459<>J100/J102/J103)

  • Page 360: Xerox Supplies And Accessories

    Laser Print Cartridge. Table 1-145 Miscellaneous Item Part Number Power Cord, 110 VAC 117E15940 Repackaging Kit 600K86720 Screw Kit 600K65640 1-338 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 361: Table 1-146 Xerox Professional Printing Paper

    Table 1-146 Xerox Professional Printing Paper Item Size Description Part Number Xerox 4024 DP Letter (U. S.) 20 lbs. 003R00721 8.5 x 11 in. (75 g/m Xerox 4024 DP Legal 20 lbs. 003R00727 8.5 x 14 in. (75 g/m Xerox 4024 DP Statement 20 lbs.
  • Page 362 Non-volative memory for downloading and storing fonts, forms, and macros Ethernet 10Base2 Interface Card 097S02362 Enables Ethernet 10Base2 connectivity Token Ring interface card 097S02363 Enables Token Ring connectivity RS232-C serial interface card 097S02361 Enables Serial connectivity 1-340 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 363: Locating Plug/Jack Connectors

    Plug/Jack Connector Locations Locating Plug/Jack Connectors Contents P/J Location Table 1 - 342 P/J Location Map 1 1 - 347 P/J Location Map 2 1 - 348 P/J Location Map 3 1 - 349 P/J Location Map 4 1 - 350 P/J Location Map 5 1 - 351 P/J Location Map 6...

  • Page 364: P/J Location

    Multi-sheet Bypass Feeder P/J465 Input/Output Board Size Sensor M2-9 Multi-sheet Bypass Feeder P/J465 Input/Output Board No Paper Sensor M4-3 Face Up Exit Sensor P/J462 Input/Output Board M3-13 Input/Output Board Toner Empty Sensor 1-342 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 365 Table 1-150 Plug/Jack Location (cont'd.) Map & Number Connected to... Other end connected to... M4-1 Full Stack Sensor P/J462 Input/Output Board M5-5 Tray 2 No Paper Sensor P/J467 Input/Output Board M5-4 Tray 2 Level Sensor P/J467 Input/Output Board M5-1 Tray 2 Size Sensor P/J467 Input/Output Board M5-6 Take-Away Roller 2 Sensor...

  • Page 366: Fig 1-120 Laser Scanner

    P/J473 Duplex Board M3-23 Input/Output Board P/J612 Finisher M3-22 Input/Output Board P/J101 Take Away Sensor P/J203 Tray 1 Lift Motor P/J604Multi-sheet Bypass Feeder or Envelope Feeder M3-24 Input/Output Board P/J480 High Capacity Feeder 1-344 DocuPrint N4525 Network Laser Printer - Service Guide...
  • Page 367 Table 1-150 Plug/Jack Location (cont'd.) Map & Number Connected to... Other end connected to... M3-26 Input/Output Board P/J140 Tray 2 No Paper Sensor P/J141 Tray 2 Level Sensor P/J142 Tray 2 Size Sensor P/J143 Take Away Sensor 2 P/J144 L/H Interlock Switch P/J240 Tray 2 Feed Clutch P/J241 Tray 2 Lift Motor M3-29...

  • Page 368: Fig 1-91 High Voltage Power Supply

    Interlock Switch 2 P/J458 Input/Output Board FS231 M5-2 Interlock Switch 2 P/J232 Interlock Switch 1 FS235 M1-2 P/J237 P/J411 Print Engine Controller Board FS236 M1-1 P/J237 P/J411 Print Engine Controller Board 1-346 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 369: P/J Location Map 1

    P/J Location Map 1 S4525-148 Fig 1-133 P/J Location Map 1 Volume 1 / Print Engine - P/J Connector Locations 1-347...

  • Page 370: P/J Location Map 2

    P/J Location Map 2 S4525-149 Fig 1-134 P/J Location Map 2 1-348 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 371: P/J Location Map 3

    P/J Location Map 3 S4535-150.ai Fig 1-135 P/J Location Map 3 Volume 1 / Print Engine - P/J Connector Locations 1-349...

  • Page 372: P/J Location Map 4

    P/J Location Map 4 S4525-151 Fig 1-136 P/J Location Map 4 1-350 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 373: P/J Location Map 5

    P/J Location Map 5 S4525-152 Fig 1-137 P/J Location Map 5 Volume 1 / Print Engine - P/J Connector Locations 1-351...

  • Page 374: P/J Location Map 6

    P/J Location Map 6 S4525-153A Fig 1-138 P/J Location Map 6 1-352 DocuPrint N4525 Network Laser Printer - Service Guide...

  • Page 375: P/J Location Map 7

    P/J Location Map 7 S4525-154 Fig 1-139 P/J Location Map 7 Volume 1 / Print Engine - P/J Connector Locations 1-353...

  • Page 376: P/J Location Map 8

    P/J Location Map 8 S4525-155 Fig 1-140 P/J Location Map 8 1-354 DocuPrint N4525 Network Laser Printer - Service Guide...

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