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Lexmark OptraTM M410/M412

4045-XXX

· Table of Contents · Start Diagnostics · Safety and Notices · Trademarks · Index

Lexmark and Lexmark with diamond design are trademarks of Lexmark International, Inc., registered in the United States and/or other countries.

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Edition: May 2000 The following paragraph does not apply to any country where such provisions are inconsistent with local law: LEXMARK INTERNATIONAL, INC. PROVIDES THIS PUBLICATION "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some states do not allow disclaimer of express or implied warranties in certain transactions; therefore, this statement may not apply to you. This publication could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein; these changes will be incorporated in later editions. Improvements or changes in the products or the programs described may be made at any time. A form for reader's comments is provided at the back of this publication. If the form has been removed, comments may be addressed to Lexmark International, Inc., Department D22A/032-2, 740 West New Circle Road, Lexington, Kentucky 40550, U.S.A. Lexmark may use or distribute any of the information you supply in any way it believes appropriate without incurring any obligation to you. You can purchase additional copies of publications related to this product by calling 1-800-553-9727. In other countries, contact your point of purchase. Lexmark and Optra are trademarks of Lexmark International, Inc., registered in the United States and/or other countries. Color Jetprinter is a trademark of Lexmark International, Inc. Other trademarks are the property of their respective owners. © Copyright Lexmark International, Inc. 2000. All rights reserved. UNITED STATES GOVERNMENT RESTRICTED RIGHTS This software and documentation are provided with RESTRICTED RIGHTS. Use, duplication or disclosure by the Government is subject to restrictions as set forth in subparagraph (c)(1)(ii) of the Rights in Technical Data and Computer Software clause at DFARS 252.227-7013 and in applicable FAR provisions: Lexmark International, Inc., Lexington, KY 40550.

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Table of Contents
Notices and Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii Laser Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Printer Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Diagnostic Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Service Error Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 User Status Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5 User Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9 Power-On Self Test (POST). . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14 Symptom Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15 Charge Roll Service Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17 Cover Open Switch/Cable Service Check . . . . . . . . . . . . . . . . . 2-19 Dead Machine Service Check . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20 Erase Lamp Service Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22 Fan Service Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23 Fuser Service Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23 Input Sensor Service Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25 Input Tray(s) Option Service Check . . . . . . . . . . . . . . . . . . . . . . 2-26 Main Drive Service Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29 Operator Panel Service Check. . . . . . . . . . . . . . . . . . . . . . . . . . 2-30 Options Service Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32 Paper Feed Service Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-33 Parallel Port Service Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35 Printhead Service Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-36 Print Quality Service Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-37 Serial Port Service Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-47 Transfer Roll Service Check . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-48 Diagnostic Aids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 Configuration Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Print Quality Test Pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Panel Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PPDS Emulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Discard Buffered Jobs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Download Emulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 3-2 3-2 3-3 3-3 3-3

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4045-XXX Demo Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4 Restore Factory Defaults. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4 Narrow Media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5 Exiting the Configuration Mode . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5 Diagnostic Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5 Exiting the Diagnostic Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5 Print Registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6 Print Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6 Hardware Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8 Input Tray Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-13 Base Sensor Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-14 Printer Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-14 Error Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-17 Device Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-17 Hardware Test Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-20 Operator Panel Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-21 Main Motor Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-22 Solenoid Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-22 Tray 2 Motor Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-23 Mirror Motor Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-23 Sensor Monitor Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-24 Cooling Fan / Fuser Control Test . . . . . . . . . . . . . . . . . . . . . . . .3-25 Erase Lamp Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-26 Reset Test Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-26 Engine Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-26 Printer Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-27 Electrophotographic Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-27 Paper Feeding, Transferring and Fusing . . . . . . . . . . . . . . . . . . . . .3-27 Paper Path/Sensor Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-28 Cable Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-29 Repair Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1 Handling ESD-Sensitive Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1 Adjustment Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2 Printhead Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2 Paper Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3 Removal Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4 Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4 Charge Roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-8 Controller Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-9 Cooling Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-11 Developer Drive Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-13 Engine Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-14

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4045-XXX Fuser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HVPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Inner Deflector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Left Side Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LVPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Main Drive Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Multipurpose Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Paper Alignment Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pick Roll . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Printhead . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Redrive Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Right Side Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Transfer Roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15 4-17 4-18 4-20 4-21 4-23 4-24 4-25 4-27 4-28 4-29 4-30 4-30

Connector Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 Low Voltage Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 High Voltage Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 Engine Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4 Interconnect Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10 Option Tray Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12 Parts Catalog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 Assembly 1: Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2 Assembly 2: Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6 Assembly 3: Printhead . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8 Assembly 4: Paper Feed - Multipurpose Unit. . . . . . . . . . . . . . . 6-10 Assembly 5: Paper Feed - Alignment. . . . . . . . . . . . . . . . . . . . . 6-12 Assembly 6: Paper Feed - Output . . . . . . . . . . . . . . . . . . . . . . . 6-14 Assembly 7: Main Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16 Assembly 8: Developer Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18 Assembly 9: Fuser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-20 Assembly 10: Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-24 Assembly 11: Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-26 Assembly 12: Electronics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-28 Assembly 13: 250-Sheet Tray . . . . . . . . . . . . . . . . . . . . . . . . . . 6-34 Assembly 14: 500-Sheet Tray . . . . . . . . . . . . . . . . . . . . . . . . . . 6-36 Assembly 15: Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-40 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-1

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Notices and Safety Information
Laser Notices
The following laser notice labels may be affixed to this printer as shown:

Laser Advisory Label

Notices and Safety Information vii

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Class 1 Laser Statement Label

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Laser Notice
The printer is certified in the U.S. to conform to the requirements of DHHS 21 CFR Subchapter J for Class I (1) laser products, and elsewhere is certified as a Class I laser product conforming to the requirements of IEC 825. Class I laser products are not considered to be hazardous. The printer contains internally a Class IIIb (3b) laser that is nominally a 5 milliwatt gallium arsenide laser operating in the wavelength region of 770-795 nanometers. The laser system and printer are designed so there is never any human access to laser radiation above a Class I level during normal operation, user maintenance, or prescribed service condition.

Laser
Der Drucker erfüllt gemäß amtlicher Bestätigung der USA die Anforderungen der Bestimmung DHHS (Department of Health and Human Services) 21 CFR Teil J für Laserprodukte der Klasse I (1). In anderen Ländern gilt der Drucker als Laserprodukt der Klasse I, der die Anforderungen der IEC (International Electrotechnical Commission) 825 gemäß amtlicher Bestätigung erfüllt. Laserprodukte der Klasse I gelten als unschädlich. Im Inneren des Druckers befindet sich ein Laser der Klasse IIIb (3b), bei dem es sich um einen Galliumarsenlaser mit 5 Milliwatt handelt, der Wellen der Länge 770-795 Nanometer ausstrahlt. Das Lasersystem und der Drucker sind so konzipiert, daß im Normalbetrieb, bei der Wartung durch den Benutzer oder bei ordnungsgemäßer Wartung durch den Kundendienst Laserbestrahlung, die die Klasse I übersteigen würde, Menschen keinesfalls erreicht.

Avis relatif à l'utilisation de laser
Pour les Etats-Unis : cette imprimante est certifiée conforme aux provisions DHHS 21 CFR alinéa J concernant les produits laser de Classe I (1). Pour les autres pays : cette imprimante répond aux normes IEC 825 relatives aux produits laser de Classe I.

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4045-XXX Les produits laser de Classe I sont considérés comme des produits non dangereux. Cette imprimante est équipée d'un laser de Classe IIIb (3b) (arséniure de gallium d'une puissance nominale de 5 milliwatts) émettant sur des longueurs d'onde comprises entre 770 et 795 nanomètres. L'imprimante et son système laser sont conçus pour impossible, dans des conditions normales d'utilisation, d'entretien par l'utilisateur ou de révision, l'exposition à des rayonnements laser supérieurs à des rayonnements de Classe I .

Avvertenze sui prodotti laser
Questa stampante è certificata negli Stati Uniti per essere conforme ai requisiti del DHHS 21 CFR Sottocapitolo J per i prodotti laser di classe 1 ed è certificata negli altri Paesi come prodotto laser di classe 1 conforme ai requisiti della norma CEI 825. I prodotti laser di classe non sono considerati pericolosi. La stampante contiene al suo interno un laser di classe IIIb (3b) all'arseniuro di gallio della potenza di 5mW che opera sulla lunghezza d'onda compresa tra 770 e 795 nanometri. Il sistema laser e la stampante sono stati progettati in modo tale che le persone a contatto con la stampante, durante il normale funzionamento, le operazioni di servizio o quelle di assistenza tecnica, non ricevano radiazioni laser superiori al livello della classe 1.

Avisos sobre el láser
Se certifica que, en los EE.UU., esta impresora cumple los requisitos para los productos láser de Clase I (1) establecidos en el subcapítulo J de la norma CFR 21 del DHHS (Departamento de Sanidad y Servicios) y, en los demás países, reúne todas las condiciones expuestas en la norma IEC 825 para productos láser de Clase I (1). Los productos láser de Clase I no se consideran peligrosos. La impresora contiene en su interior un láser de Clase IIIb (3b) de arseniuro de galio de funcionamiento nominal a 5 milivatios en una longitud de onda de 770 a 795 nanómetros. El sistema láser y la impresora están diseñados de forma que ninguna persona pueda verse afectada por ningún tipo de radiación láser superior al nivel de

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4045-XXX la Clase I durante su uso normal, el mantenimiento realizado por el usuario o cualquier otra situación de servicio técnico.

Declaração sobre Laser
A impressora está certificada nos E.U.A. em conformidade com os requisitos da regulamentação DHHS 21 CFR Subcapítulo J para a Classe I (1) de produtos laser. Em outros locais, está certificada como um produto laser da Classe I, em conformidade com os requisitos da norma IEC 825. Os produtos laser da Classe I não são considerados perigosos. Internamente, a impressora contém um produto laser da Classe IIIb (3b), designado laser de arseneto de potássio, de 5 milliwatts ,operando numa faixa de comprimento de onda entre 770 e 795 nanómetros. O sistema e a impressora laser foram concebidos de forma a nunca existir qualquer possiblidade de acesso humano a radiação laser superior a um nível de Classe I durante a operação normal, a manutenção feita pelo utilizador ou condições de assistência prescritas.

Laserinformatie
De printer voldoet aan de eisen die gesteld worden aan een laserprodukt van klasse I. Voor de Verenigde Staten zijn deze eisen vastgelegd in DHHS 21 CFR Subchapter J, voor andere landen in IEC 825. Laserprodukten van klasse I worden niet als ongevaarlijk aangemerkt. De printer is voorzien van een laser van klasse IIIb (3b), dat wil zeggen een gallium arsenide-laser van 5 milliwatt met een golflengte van 770-795 nanometer. Het lasergedeelte en de printer zijn zo ontworpen dat bij normaal gebruik, bij onderhoud of reparatie conform de voorschriften, nooit blootstelling mogelijk is aan laserstraling boven een niveau zoals voorgeschreven is voor klasse 1.

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Lasermeddelelse
Printeren er godkendt som et Klasse I-laserprodukt, i overenstemmelse med kravene i IEC 825. Klasse I-laserprodukter betragtes ikke som farlige. Printeren indeholder internt en Klasse IIIB (3b)-laser, der nominelt er en 5 milliwatt galliumarsenid laser, som arbejder på bølgelængdeområdet 770-795 nanometer. Lasersystemet og printeren er udformet således, at mennesker aldrig udsættes for en laserstråling over Klasse I-niveau ved normal drift, brugervedligeholdelse eller obligatoriske servicebetingelser.

Huomautus laserlaitteesta
Tämä kirjoitin on Yhdysvalloissa luokan I (1) laserlaitteiden DHHS 21 CFR Subchapter J -määrityksen mukainen ja muualla luokan I laserlaitteiden IEC 825 -määrityksen mukainen. Luokan I laserlaitteiden ei katsota olevan vaarallisia käyttäjälle. Kirjoittimessa on sisäinen luokan IIIb (3b) 5 milliwatin galliumarsenidilaser, joka toimii aaltoalueella 770 - 795 nanometriä. Laserjärjestelmä ja kirjoitin on suunniteltu siten, että käyttäjä ei altistu luokan I määrityksiä voimakkaammalle säteilylle kirjoittimen normaalin toiminnan, käyttäjän tekemien huoltotoimien tai muiden huoltotoimien yhteydessä. VARO! Avattaessa ja suojalukitus ohitettaessa olet alttiina näkymättömälle lasersäteilylle. Älä katso säteeseen. VARNING! Osynlig laserstrålning när denna del är öppnad och spärren är urkopplad. Betrakta ej strålen.

Laser-notis
Denna skrivare är i USA certifierad att motsvara kraven i DHHS 21 CFR, underparagraf J för laserprodukter av Klass I (1). I andra länder uppfyller skrivaren kraven för laserprodukter av Klass I enligt kraven i IEC 825.

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4045-XXX Laserprodukter i Klass I anses ej hälsovådliga. Skrivaren har en inbyggd laser av Klass IIIb (3b) som består av en laserenhet av gallium-arsenid på 5 milliwatt som arbetar i våglängdsområdet 770795 nanometer. Lasersystemet och skrivaren är utformade så att det aldrig finns risk för att någon person utsätts för laserstrålning över Klass I-nivå vid normal användning, underhåll som utförs av användaren eller annan föreskriven serviceåtgärd.

Laser-melding
Skriveren er godkjent i USA etter kravene i DHHS 21 CFR, underkapittel J, for klasse I (1) laserprodukter, og er i andre land godkjent som et Klasse I-laserprodukt i samsvar med kravene i IEC 825. Klasse I-laserprodukter er ikke å betrakte som farlige. Skriveren inneholder internt en klasse IIIb (3b)-laser, som består av en gallium-arsenlaserenhet som avgir stråling i bølgelengdeområdet 770-795 nanometer. Lasersystemet og skriveren er utformet slik at personer aldri utsettes for laserstråling ut over klasse I-nivå under vanlig bruk, vedlikehold som utføres av brukeren, eller foreskrevne serviceoperasjoner.

Avís sobre el Làser
Segons ha estat certificat als Estats Units, aquesta impressora compleix els requisits de DHHS 21 CFR, apartat J, pels productes làser de classe I (1), i segons ha estat certificat en altres llocs, és un producte làser de classe I que compleix els requisits d'IEC 825. Els productes làser de classe I no es consideren perillosos. Aquesta impressora conté un làser de classe IIIb (3b) d'arseniür de gal.li, nominalment de 5 mil.liwats, i funciona a la regió de longitud d'ona de 770-795 nanòmetres. El sistema làser i la impressora han sigut concebuts de manera que mai hi hagi exposició a la radiació làser per sobre d'un nivell de classe I durant una operació normal, durant les tasques de manteniment d'usuari ni durant els serveis que satisfacin les condicions prescrites.

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Japanese Laser Notice

Chinese Laser Notice

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Korean Laser Notice

Safety Information
· This product is designed, tested and approved to meet strict
global safety standards with the use of specific Lexmark components. The safety features of some parts may not always be obvious. Lexmark is not responsible for the use of other replacement parts. The maintenance information for this product has been prepared for use by a professional service person and is not intended to be used by others. There may be an increased risk of electric shock and personal injury during disassembly and servicing of this product. Professional service personnel should understand this and take necessary precautions.

· ·

Consignes de Sécurité
· Ce produit a été conçu, testé et approuvé pour respecter les
normes strictes de sécurité globale lors de l'utilisation de composants Lexmark spécifiques. Les caractéristiques de Notices and Safety Information xv

4045-XXX sécurité de certains éléments ne sont pas toujours évidentes. Lexmark ne peut être tenu responsable de l'utilisation d'autres pièces de rechange. Les consignes d'entretien et de réparation de ce produit s'adressent uniquement à un personnel de maintenance qualifié. Le démontage et l'entretien de ce produit pouvant présenter certains risques électriques, le personnel d'entretien qualifié devra prendre toutes les précautions nécessaires.

· ·

Norme di sicurezza
· Il prodotto è stato progettato, testato e approvato in conformità a
severi standard di sicurezza e per l'utilizzo con componenti Lexmark specifici. Le caratteristiche di sicurezza di alcune parti non sempre sono di immediata comprensione. Lexmark non è responsabile per l'utilizzo di parti di ricambio di altri produttori. Le informazioni riguardanti la manutenzione di questo prodotto sono indirizzate soltanto al personale di assistenza autorizzato. Durante lo smontaggio e la manutenzione di questo prodotto, il rischio di subire scosse elettriche e danni alla persona è più elevato. Il personale di assistenza autorizzato, deve, quindi, adottare le precauzioni necessarie.

· ·

Sicherheitshinweise
· Dieses Produkt und die zugehörigen Komponenten wurden
entworfen und getestet, um beim Einsatz die weltweit gültigen Sicherheitsanforderungen zu erfüllen. Die sicherheitsrelevanten Funktionen der Bauteile und Optionen sind nicht immer offensichtlich. Sofern Teile eingesetzt werden, die nicht von Lexmark sind, wird von Lexmark keinerlei Verantwortung oder Haftung für dieses Produkt übernommen. Die Wartungsinformationen für dieses Produkt sind ausschließlich für die Verwendung durch einen Wartungsfachmann bestimmt. Während des Auseinandernehmens und der Wartung des Geräts besteht ein zusätzliches Risiko eines elektrischen Schlags und körperlicher Verletzung. Das zuständige

· ·

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4045-XXX Fachpersonal sollte entsprechende Vorsichtsmaßnahmen treffen.

Pautas de Seguridad
· Este producto se ha diseñado, verificado y aprobado para
cumplir los más estrictos estándares de seguridad global usando los componentes específicos de Lexmark. Puede que las características de seguridad de algunas piezas no sean siempre evidentes. Lexmark no se hace responsable del uso de otras piezas de recambio. La información sobre el mantenimiento de este producto está dirigida exclusivamente al personal cualificado de mantenimiento. Existe mayor riesgo de descarga eléctrica y de daños personales durante el desmontaje y la reparación de la máquina. El personal cualificado debe ser consciente de este peligro y tomar las precauciones necesarias.

· ·

Informações de Segurança
· Este produto foi concebido, testado e aprovado para satisfazer
os padrões globais de segurança na utilização de componentes específicos da Lexmark. As funções de segurança de alguns dos componentes podem não ser sempre óbvias. A Lexmark não é responsável pela utilização de outros componentes de substituição. As informações de segurança relativas a este produto destinam-se a profissionais destes serviços e não devem ser utilizadas por outras pessoas. Risco de choques eléctricos e ferimentos graves durante a desmontagem e manutenção deste produto. Os profissionais destes serviços devem estar avisados deste facto e tomar os cuidados necessários.

· ·

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Informació de Seguretat
· Aquest producte està dissenyat, comprovat i aprovat per tal
d'acomplir les estrictes normes de seguretat globals amb la utililització de components específics de Lexmark. Les característiques de seguretat d'algunes peces pot ser que no sempre siguin òbvies. Lexmark no es responsabilitza de l'us d'altres peces de recanvi. La informació pel manteniment d'aquest producte està orientada exclusivament a professionals i no està destinada a ningú que no ho sigui. El risc de xoc elèctric i de danys personals pot augmentar durant el procés de desmuntatge i de servei d'aquest producte. El personal professional ha d'estar-ne assabentat i prendre les mesures convenients.

· ·

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Chinese Safety Information

Korean Safety Information

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1. General Information
The Lexmark OptraTM M410 and M412 laser printers are letterquality laser page printers designed to attach to an IBM compatible Personal Computer and to most computer networks. The M410 printer is capable of printing at speeds of 12 pages per minute. The M412 is capable of printing at speeds of 17 pages per minute. Both models print with a true 600 x 600 dpi resolution or 1200 x 1200 dpi Image Quality resolution. Each model of the base printer comes with 4MB of memory and is expandable to 132MB using both SDRAM DIMM slots. User flash memory is also available up to 16MB.

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Options
The following options are available. Some options are not available in every country. Contact your point of purchase for options available in your country. 500-Sheet Drawer SDRAM Memory DIMMs: 4MB, 8MB, 16MB, 32MB and 64MB Flash Memory DIMMs: 2MB, 4MB, 8MB and 16MB Internal Network Options Token Ring Ethernet 10/100BaseTX 10Base2/T Tri-Port Card Hard Disk - 2.1GB Coax/Twinax Adapter for SCS External Network Adapter: Marknet Pro 1 and 3 series compatible

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Printer Specifications
Acoustics Operating: <50 dBA Idle: <30 dBA Sleep: background noise Paper Present Sensing (MPF) Tray 1 inserted (only when Tray 2 option is installed) Input/Exit sensors Rear Exit sensor Ozone free Blue Angel Energy Star less than 70 seconds (from power on to Ready) Tray 1: Less than 12 seconds from standby Tray 2: Less than 13 seconds from standby MPF: Less than 12 seconds from standby Width - 405 mm (15.9") Height - 314 mm (12.4") Depth - 435 mm (17.1") Height of Tray 2 - 130 mm (5.1") Footprint - 246 square inches 14.8 Kg (32.6 lbs.) with supplies installed

Sensors

Environment Warm-up First page time

Dimensions

Weight

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Maintenance Approach
The diagnostic information in this manual leads you to the correct field replaceable unit (FRU) or part. Use the service error codes, user status messages, user error messages, service checks, and diagnostic aids to determine the printer problem and repair the failure. After you complete the repair, perform tests as needed to verify the repair.

Tools Required For Service
Flat-blade screwdriver #1 Phillips screwdriver #2 Phillips screwdriver Needlenose pliers Diagonal pliers Spring hook Analog or digital multimeter Parallel wrap plug 1319128 Serial wrap plug 1329048 Twinax/serial debug cable 1381963 Coax/serial debug cable 1381964

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Acronyms
CSU DIMM DRAM EDO EP EPROM ESD FRU GB HVPS LASER LCD LED LVPS MROM NVRAM OEM PC POR POST RIP ROM SIMM SRAM UPR V ac V dc Customer Setup Dual In-Line Memory Module Dynamic Random Access Memory Enhanced Data Out Electrophotographic Process Erasable, Programmable Read-Only Memory Electrostatic Discharge Field Replaceable Unit Gigabyte High Voltage Power Supply Light Amplification by Stimulated Emission of Radiation Liquid Crystal Display Light-Emitting Diode Low Voltage Power Supply Masked Read Only Memory Nonvolatile Random Access Memory Original Equipment Manufacturer Photoconductor Power-On Reset Power-On Self Test Raster Imaging Processor Read Only Memory Single In-Line Memory Module Static Random Access Memory Used Parts Return Volts alternating current Volts direct current

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2. Diagnostic Information
Start
CAUTION: Remove power from the printer before you connect or disconnect any cable or electronic board or assembly for personal safety and to prevent damage to the printer. Use the handholds on the side of the printer. Make sure your fingers are not under the printer when you lift or set the printer down. Use the service error code, user status message, user error message, symptom table, service checks, and diagnostic aids in this chapter to determine the corrective action necessary to repair a malfunctioning printer. Service error codes are indicated by a three-digit error code. If a service error code is displayed, go to the "Service Error Codes" on page 2-2. User status messages provide the user with information on the current status of the printer. Ready is displayed on the first line of the display unless Power Saver is invoked, and then Power Saver is displayed. If a user status message is displayed, go to the "User Status Messages" on page 2-5. User error messages are indicated by a two or three-digit error code that provides the user with information that explains a problem with a print cartridge, paper jam, option, port, and so on. If a user error message is displayed, go to the "User Error Messages" on page 2-9. If your machine completes the without an error, and you have a symptom, go to the "Symptom Tables" on page 2-15. Locate your symptom and take the appropriate action. If a service error code appears while you are working on the machine, go to the "Service Error Codes" on page 2-2 and take the indicated action for that error.

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Service Error Codes
Service Error Codes are generally non-recoverable except in an intermittent condition when you can POR the printer to temporarily recover from the error condition.
Error Code 900 RIP Software 902 Engine Software 920 Fuser Error Action Replace the controller board. Indicates an unrecoverable engine software error. Replace the engine board. Indicates that the fuser is below temperature when printing. Go to the "Cold Fuser Service Check" on page 2-23. Indicates that the fuser is below standby temperature when the printer is idle. Go to the "Cold Fuser Service Check" on page 2-23. Fuser failed to reach standby temperature. Go to the "Cold Fuser Service Check" on page 2-23. Fuser is too hot during printing or when printer is idle. Go to the "Hot Fuser Service Check" on page 2-25. An open circuit has been detected in the Fuser Thermistor Circuit. Go to the "Hot Fuser Service Check" on page 2-25. These errors represent a problem with the printhead. Go to the "Printhead Service Check" on page 2-36.

921 Fuser Error

922 Fuser Error 923 Fuser Error 924 Fuser Error

931-935 Printhead Error 931 - Printhead: no first Hsync 932 - Printhead: Lost Hsyncs 935 - Mirror Motor unable to reach operating speed. 936 Transport Motor

Indicates a problem with the main drive motor. Go to the "Main Drive Service Check" on page 2-29.

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Error Code 939 Controller Engine Communications Error Action The controller board and the engine board cannot communicate with one another. The controller board, engine board or interconnect board is defective. Check each board for correct installation and secure ground. If no problem is found, replace the FRUs in the following order: controller board engine board interconnect board Note: The controller software also can cause a 939 error code. Contact your next level for software support. 941 Controller Code CRC 941 Controller Font CRC 943 Controller Font Version 944 Controller Board Failure 945 Controller Board Failure ASIC Failure 946 Controller Board Failure SRAM Failure 947 Engine Board 953 NVRAM Failure 954 NVRAM Failure 960 RAM Memory Error Replace the controller board. Replace the controller board. Indicates that the controller code and FONT ROM are incompatible. Replace the controller board. Replace the controller board.

Replace the controller board.

Replace the engine board. Indicates the NVRAM chip on the engine board has failed. Replace the engine board. Indicates the NVRAM experienced a CRC failure. Replace the engine board. Indicates a DRAM Memory Error on the controller board. Replace the controller board.

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Error Code 961 RAM in Slot 1 is Bad. 962 RAM in Slot 2 is Bad. 964 Emulation Error 965 Emulation Error Action Replace the SIMM in Slot 1. If this does not fix the problem, replace the controller board. Replace the SIMM in Slot 2. If this does not fix the problem, replace the controller board. Indicates a failure within the Download Emulation which is programmed into the code overlay SIMM. The specific error is as follows: 964 - Download Emulation CRC Failure. Checksum Failure. 965 - Download Emulation Outdated, The Download Emulation and the controller code are incompatible. Go to "Download Emulation" on page 3-3. The following errors indicate a failure with the network card. 975 - Unrecognizable Network Card. Replace Network Card. 976 - Unrecoverable software error in Network Card. 978 - Bad checksum while programming Network Card. Replace Network Card. 979 - Flash parts failed while programming Network Card.

975 - 979 Network Card

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User Status Messages
User Status Message Ready or Power Saver Status The printer is ready to receive and process data. Action Press Menu> or or until Reset Printer is on the second line of the display. Press Select to Reset the printer. Press Stop to take the printer out of Busy. The Not Ready message is displayed. No more data is processed, but the printer processes all paper currently in the printer paper path. Press Go to return to Ready. No button actions are possible while this message is displayed.

Ready/Hex

The printer is ready and HEX Trace is active, which is known as HEX Trace Ready.

Busy

The printer is busy receiving or processing data, or printing data. Note: The printer indicator light blinks while the printer is processing data.

Flushing Buffer

The printer is flushing corrupted print data and the current print job is being discarded.

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User Status Message Printing Menu Settings Status The printer is processing or printing a list of current settings menus because Print Menu Settings is selected from the menu. Action Press Stop to take the printer out of Ready. The Not Ready message is displayed. No more data is processed, but the printer processes all paper currently in the printer paper path. Press Go to return to Ready after the page prints. Press Menu> or until Reset Printer is on the second line of the display. Press Select to reset the printer. Press Stop to take the printer out of Ready. The Not Ready message is displayed. No more data is processed, but the printer processes all paper currently in the paper path. Press Go to return to Ready after the page prints. Press Menu> or until Reset Printer is on the second line of the display. Press Select to reset the printer.

Printing Directory List

A directory of the flash and disk contents is processing or printing because Print Directory is selected from the menu.

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User Status Message Restoring Factory Defaults Performing Self Tests Status The printer is restoring factory defaults. The printer is running the normal series of start-up tests after it is powered On. When the tests are complete, the printer returns to Ready. The printer is in the Not Ready state, which means it is not ready to receive or process data. This message displays when Menu> or
Not Ready (Press Go)

Press Go to take the printer out of the Not Ready state. Press Menu> or until Reset Printer is on the second line of the display. Press Select to reset the printer. No button actions are possible while this message is displayed. No button actions are possible while this message is displayed. Do not perform any button actions while this message is displayed. No button actions are possible while this message is displayed.

Resetting Printer

The printer is deleting any print jobs in process and restoring all settings to user defaults. The flash memory is being formatted. The flash memory is being programmed, which means fonts or macros are being written to flash memory. The disk is being formatted.

Formatting Flash (Do Not Power Off) Program Flash (Do Not Power Off)

Formatting Disk

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User Status Message Programming Disk (Do Not Power Off) Status The disk is being programmed, which means fonts or macros are being written to disk. Action No button actions are possible while this message is displayed. Note: If information is written to flash memory and to disk at the same time, the Program Flash message is displayed. Menus Disabled The printer menus have been disabled. This occurs when Menu> or
Activating Menu Changes

No button actions are possible while this message is displayed.

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User Error Messages
User Error Message 200 Paper Jam Remove Cartridge 201 Paper Jam Remove Cartridge Explanation Paper is jammed at the printer Input Sensor. Open the printer's upper front door and remove the print cartridge to access the paper jam area. Paper is jammed between the printer's input and exit sensors. Open the printer's upper front door and remove the print cartridge to access the jam area. Paper is jammed at the printer exit sensor. Open the printer rear door to access the jam area. Paper stops behind the rear door when feeding to the top output bin. Paper or envelopes that are shorter than 6.2 inches (157.5 mm) in length must exit through the rear exit. Paper is jammed in the multipurpose feeder. This message displays when the printer's front door is open or the print cartridge is missing. If this message cannot be cleared go to "Cover Open Switch/Cable Service Check" on page 2-19. The printer determines the paper length is too short to print the formatted data. This occurs when the printer does not know the actual paper size loaded in the tray. For auto-size sensing trays, this error occurs if the paper stop is in the incorrect position. Make sure the Paper Size setting is correct for the size paper that is being used. This message displays when the printer has insufficient memory to enable Resource Save. Modification of user settings that use memory can cause this error. This message is displayed when the printer memory used to store pages is too full to collate the print job. This message is displayed when the printer memory used to store pages is full.

202 Paper Jam Open Rear Door 203 Paper Jam Short Paper

250 Paper Jam Check MP Feeder Insert Cartridge or Close Door

34 Short Paper

35 Res Save Off Deficient Memory

37 Insufficient Collation Memory 38 Memory Full

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User Error Message 39 Complex Page 51 Defective Flash Explanation This message is displayed when the page is too complex to print. This message is displayed when the printer detects a defective flash. This error may occur at power on, or during flash format and write operations. Press Go to clear the message. The flash is marked as bad and normal operation continues. Flash operations are not allowed until the problem is resolved. This message is displayed when there is not enough free space in the flash memory to hold the resources that have been requested to be written to flash. This message is displayed when the printer detects an unformatted flash at power on. Press Go to clear the message. The flash is marked as bad and normal operation continues. Flash operations are not allowed until the flash is formatted. This error is displayed when the connection to the network port is lost during power on. Press Go to clear the message. The printer clears the setting, but no communication can exist with the network until the network software is reloaded. This error is displayed when data is sent to the printer across the parallel port, but the parallel port has been disabled. Once this message is displayed, reporting of further errors is suppressed until the menus are entered, or the printer is reset. This error code is displayed when the printer detects a defective disk. This error may occur at power on or during disk format and write operations. The following actions may be taken while this message is displayed: Press Go to clear the message. The disk is marked defective and normal printer operations continue. Disk operations are not allowed with a defective disk. The Format Disk menu is not shown.

52 Flash Full

53 Unformatted Flash

54 Network Software Error

56 Parallel Port Disabled

61 Defective Disk

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User Error Message 62 Disk Full Explanation This error code is displayed when there is not enough free space on the disk to hold the resources that have been requested to be written to the disk. This message displays for both resource and PostScript Disk operators when the disk is full. This error code displays when the printer detects an unformatted disk at power on. Press Go to clear the message. The disk is marked as bad and normal operation continues. Disk operations are not allowed until the disk is formatted.

63 Unformatted Disk

User Line 2 Messages If none of the conditions exist that are listed in the following table, line 2 is blank. If any of the messages in the table are displayed the following actions can be taken: Press Menu> or
User Message Tray 1 Missing

Explanation This message displays when tray 1 is missing and tray 2 is installed.

Diagnostic Information 2-11

4045-XXX User Line 2 Link Messages If the printer is locked on a particular link, the link indication displays. If the printer is ready to process any link, no messages display. The link messages are listed in the following table.
User Message Check Configuration ID Explanation The printer configuration ID is not set or is invalid. This condition can only be cleared when a valid configuration ID is set. Go to "Setting Configuration ID" on page 3-15. This is the host interface from which the printer is currently drawing data.

Parallel Serial Network LocalTalk Infrared USB Fax

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4045-XXX Check Device Connection Messages The messages in the following table display when the printer looses communications with one of the following devices.
User Status Message Check Tray 2 Connection Explanation This message can occur in two ways. The specified device could have been removed from the printer, for instance to clear a paper jam. Otherwise, the device can still be attached to the printer, but is experiencing a communications problem, not fully connected, or having a hardware failure. If the device is temporarily removed or not connected properly, then reattach it. When the option is recognized, the printer automatically clears the error and continues. If the option is experiencing a hardware problem, turn the printer off and back on. If the error occurs again, turn the printer off, remove the option and call for service.

Diagnostic Information 2-13

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Power-On Self Test (POST)
When you turn the printer On, it performs a Power-On Self Test. Check for correct POST functioning of the base printer by observing the following: 1. The LED comes on. 2. The operator panel displays one row of pels, and then clears. 3. The operator panel displays one and a half rows of diamonds, and then clears. 4. "Performing Self Test" appears on the display. 5. "Ready" appears on the display. 6. The fuser lamp turns on. The fuser takes longer to warm up from a cold start than a warm start. 7. The cooling fan turns on and runs full speed. 8. The main drive motor turns on. 9. The developer drive assembly drives the developer shaft in the toner cartridge. 10. The exit rollers turn. 11. The printhead mirror motor turns on. 12. The cooling fan turns on and runs slowly. 13. The main drive motor turns off. 14. The exit rollers stop turning. 15. The printhead mirror motor turns off. 16. The LED stays on solid and the operator panel displays "Ready".

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Symptom Tables
Symptom Dead Machine Operator Panel - One or more buttons do not work. Operator Panel - Display is blank. Printer sounds 5 beeps. Operator Panel - Display is blank. Printer does not emit 5 beeps. Operator Panel continuously displays all diamonds, sounds five beeps and does not complete POST. Paper feed problems - Base printer or Integrated 250 Paper Tray Paper jams at exit of Redrive Assembly. Print quality - Black page Print quality - Blank page Print quality - Light print Print quality - Background Print quality - Residual image Print quality - Skew Print quality - Banding Print quality - Random marks Action Go to the "Dead Machine Service Check" on page 2-20. Go to the "Operator Panel Buttons Service Check" on page 2-30. Go to the "Operator Panel Service Check" on page 2-30. Replace the operator panel assembly. Go to the "Operator Panel Service Check" on page 2-30.

Go to the "Paper Feed Service Check" on page 2-33. Go to the "Paper Feed Service Check" on page 2-33. Go to "Print Quality - All Black Page" on page 2-38. Go to "Print Quality - Blank Page" on page 2-38. Go to "Print Quality - Light Print" on page 2-46. Go to "Print Quality - Background" on page 2-42. Go to "Print Quality - Residual Image" on page 2-45. Go to the "Paper Feed Service Check" on page 2-33. Go to "Print Quality - Banding" on page 2-44. Go to "Print Quality - Random Marks" on page 2-39.

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Symptom Print quality - Toner on backside of printed page. Print quality - Vertical black bands on edge of copy. Paper feed problem with 500 sheet paper tray option. Action Go to "Print Quality - Toner on backside of printed page" on page 2-47. Go to "Print Quality - Black bands on outer edges of the page" on page 2-44. Go to "Input Tray(s) Option Service Check" on page 2-26.

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Service Checks
Note: Anytime the engine board is replaced, the Configuration ID must be reset in NVRAM on the new engine board. Review the following information before performing any service checks.

· Paper feed Problems (especially paper jams): Go to "Viewing
the Error Log" on page 3-17 and check the printer error log for indications of repetitive entries that help to isolate a problem to a particular area of the printer or option. Paper feed Problems with error message: Use the "User Error Messages" on page 2-9 to help diagnose the problem. Print Quality Problems: Go to "Print Quality Test Pages" on page 3-2 and print a test page to help diagnose problems before changing any settings or working on the printer. Use the resident diagnostics test provided to help isolate a problem before taking the machine apart or removing any options.

· · ·

Charge Roll Service Check
Service Tip: Close and evenly spaced repetitive marks 47.5 mm apart or spots on the page can be caused by a damaged or contaminated charge roll.
FRU 1 Charge Roll Assembly Action Check the charge roll for correct installation, toner buildup, marks, cuts or other signs of contamination or damage. Replace as necessary. Check the left side charge roll arm and bushing for correct assembly operation. Check for damage to the arm or bearing assembly.

2

Left Side Charge Roll Arm and Bushing

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FRU 3 Right Side Charge Roll Arm and Bushing Action Check the right side charge roll arm and bushing for correct assembly operation. Check the right charge roll bushing for signs of wear or contamination. Excessive contamination could cause intermittent charging of the charge roll. If incorrect, replace the bushing. Check for continuity from the bushing to the charge roll high voltage contact on the right side frame. If incorrect, replace the right charge roller arm. Note: The screw that attaches the charge roll lead to the contact must be secure.

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Cover Open Switch/Cable Service Check
FRU 1 Toner Cartridge Action Check the toner cartridge to make sure it is correctly installed and that the right and left cartridge tracks are not loose or broken. Check to make sure the cover open switch activation tab on the toner cartridge is not broken and that the tab correctly activates the cover open switch spring. Check the cover open switch for proper mechanical operation. If incorrect, repair as necessary. Disconnect the cover open switch cable from J4 at the engine board and measure the voltage at J4-6. It measures approximately +5 V dc. If the voltage is incorrect, replace the engine board. If the voltage is correct, check for ground at J4-8. If incorrect, replace the engine board. If the ground is correct, check the continuity between J4-6 and J4-7 on the cable. If no change in continuity occurs as the switch is activated, replace the cover open switch/cable assembly. If the continuity changes as the switch is activated, replace the engine board. Note: It is easier to check the voltages on J4 with the controller board removed.

2

Cover Open Switch/Cable Assembly

Diagnostic Information 2-19

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Dead Machine Service Check
Note: Remove any paper handling options before servicing the printer for a dead machine condition. Observe all necessary ESD precautions when removing and handling the controller board, engine board or any of the installed option cards or assemblies. Service Tip: The LVPS uses a self-docking connector that mates with another connector mounted on the left side frame assembly. Some force may be required to pull the LVPS loose from the connector.

FRU 1 Line Voltage

Action Check the AC line voltage. If the line voltage is incorrect, inform the customer. Check the line cord for any signs of damage. If correct, check the continuity of the line cord and replace if necessary. Check for +24 V dc at pin 7 of the tray 2 connector located under the printer. If +24 V dc is present at the connector, go to step 9. If +24 V dc is not present, go to step 4. Remove the controller board. Turn on the printer. If the printer powers on in the Hardware Test Mode, replace the controller board. If the printer does not power on, go to step 5. Check for +5 V dc at the TP5 test point and +24 V dc at the TP6 test point on the engine board. If correct, replace the engine board. If incorrect, go to step 6. Remove the LVPS from the printer and check fuse F1. Replace the fuse if the fuse is blown.

2

AC Line Cord

3

+24 V dc at Tray 2 Connector

4

Controller Board

5

Engine Board Test Points

6

LVPS Fuse F1

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FRU 7 LVPS Fuse F1 - Continues to blow after LVPS installed in the printer. Action Replace fuse F1 if necessary. Turn the LVPS on/off switch Off and connect the AC line cord and turn the LVPS On. CAUTION: Before checking fuse F1 turn the LVPS Off and disconnect the AC line cord. Check fuse F1. If the fuse is blown, replace the LVPS. 8 LVPS Remove the LVPS from the machine. CAUTION: Before making any measurements on the LVPS output connector, observe all necessary safety precautions before applying AC power. Measure the voltages on LVPS output connector CN1. If any voltages are incorrect, replace the LVPS. Turn the printer off and disconnect all the cables from the engine board. Check for +5 V dc at TP5 test point and +24 V dc at test point TP6 on the engine board. If incorrect, replace the FRUs in the following order: engine board interconnect board If correct, turn the printer off and reconnect one cable at a time until you find the defective assembly. Service Tip: A short or low resistance load that is attached to the engine board can cause the LVPS to overcurrent and shut the +5 V dc supply down to 0 V dc.

9

Engine Board

Diagnostic Information 2-21

4045-XXX

Erase Lamp Service Check
Error code 928 may be displayed when the printer detects that the erase lamp assembly, cable or engine board is defective. Note: If the erase lamp assembly is defective, both the erase lamp and lens are replaced as a kit. Make the following checks when a 928 service error displays.

FRU 1 Cable, Front Harness

Action Check the connection of the front harness to connector J10 on the engine board for correct installation. If incorrect, repair as necessary. Check the front harness to erase lamp assembly for correct installation. If incorrect, repair as necessary. Remove the controller board and toner cartridge from the machine. Perform the Erase Lamp Test in the Hardware Test Mode. The erase lamps turn on. The lamps can be observed through the front of the machine with the cover open and print cartridge removed. If the lamps do not turn on, measure the voltage on J12-1. The voltage reads approximately +24 V dc. If incorrect, replace the engine board. If correct, check the voltage at J12-2. The voltage reads between 0.6 V dc to 0.8 V dc. If incorrect, check the continuity of the erase lamp cable. If incorrect, replace the cable. If correct, replace the erase lamp assembly.

2

Engine Board

2-22 Service Manual

4045-XXX

Fan Service Check
Check the cable connections at J13 on the engine board and at the main fan assembly. The main fan runs continuously when the printer is powered on unless the printer is in the Power Saver mode.
FRU 1 Fan Action Manually spin the fan and check that it rotates freely. Check the cable connection to the engine board, J13 for correct installation. Check the continuity of the cable. If incorrect, replace the cable. Perform the Cooling Fan Test in the Hardware Test Mode. Turn the cooling fan on to slow or fast. Disconnect the fan connector at J13 and measure the voltage. The voltage measures +24 V dc. If correct, replace the fan. If incorrect, replace the engine board.

2

Engine Board

Fuser Service Check
Cold Fuser Service Check Error codes 920, 921, and 922 may display for a cold fuser failure. A 920 error caused by low line voltage can sometimes be cleared by turning the machine off and then on again. Service Tip: Set the Fuser Temperature to NORMAL before starting this service check.

Diagnostic Information 2-23

4045-XXX

FRU 1 Fuser Lamp

Action Remove the controller board and run the Cooling Fan Test in the Hardware Test Mode. Observe the lamp through the left side frame. If the lamp doesn't come on, unplug the printer and check the continuity between the two pins on the fuser lamp cable going to the fuser assembly. If you do not measure continuity, remove the fuser assembly and check the continuity of the lamp. If incorrect, replace the lamp. If correct, replace the contact in the fuser cover. Turn the printer off. Disconnect the fuser lamp connectors at the fuser assembly. Turn the printer on and check across the cable for line voltage. If incorrect, remove the LVPS and check both F1 and F2 fuses. Remove the LVPS from the printer. Replace any open fuses and attach the power cord. If the fuses open, replace the LVPS. If the fuses open after the lamp cables are connected to the fuser, the fuser lamp circuit is shorted. Inspect the fuser lamp contacts in the fuser cover. Replace the contacts as necessary. Disconnect the thermistor cable from the engine board. The resistance is as follows: HOT - 1K ohms COLD = 150K ohms to 475K ohms

2

LVPS

3

Thermistor

2-24 Service Manual

4045-XXX Hot Fuser Service Check Error codes 923 and 924 may display for a hot fuser failure. CAUTION: The fuser may be hot, use caution before removing or servicing.
FRU 1 Fuser Thermistor Action Check for damage to the thermistor assembly. Check the resistance of the themistor: HOT - 1K ohms COLD =150K ohms to 475K ohms With the cable connected, check the continuity from J8-6 and J8-7 to ground. If there is continuity, replace the fuser thermistor. 2 Engine Board Error code 924 indicates the engine board detects an open circuit in the thermistor circuit for the fuser assembly. The voltage on J8-6 on the engine board measures approximately +5 V dc. If incorrect, replace the engine board. Examine the fuser assembly for signs of overheating or damage. Check the hot roll and backup roll for signs of excessive toner, label glue, labels or other contaminants. If any are found, repair as necessary or replace the fuser assembly.

3

Fuser Hot Roll Backup Roll Bearings

Input Sensor Service Check
Service Tip: Run the Base Sensor Test. Check the input sensor for proper operation. The display changes from open to closed as the sensor flag is manually moved in and out of the sensor.

Diagnostic Information 2-25

4045-XXX Service Tip: Run the Sensor Monitor Test in the Hardware Test Mode with the controller board removed.
FRU 1 Input Sensor Flag Action Check the input sensor flag for damage and proper operation. If a problem is found, repair as necessary. Check for approximately +5 V dc at J2-3 on the engine board. If incorrect, replace the engine board. Check the continuity of the input sensor cable. If incorrect, replace the cable. If correct, replace the input sensor assembly.

2

Engine Board

3

Input Sensor Cable

Input Tray(s) Option Service Check
500-Sheet Input Tray Option Service Tip: Try all the other input paper sources to make sure they are properly feeding paper. Run the Tray 2 Motor Test in the Hardware Test Mode to verify motor and related paper feed components are working properly. With the motor on, actuate the tray 2 solenoid from the Solenoid Test to feed paper.

2-26 Service Manual

4045-XXX Printer does not recognize Tray 2 is installed
FRU 1 Tray 2 Interconnect Cable Action Make sure the printer is positioned correctly on top of tray 2. The tray 2 interconnect cable contacts must engage the tray 2 cable on the base printer. Replace the cable if the contacts are defective.

Printer displays message "Insert Tray 1" when trying to print from Tray 2
FRU 1 Tray 1 Inserted Sensor Action Check the tray 2 option for correct installation with the base printer. Run the Sensor Test in the Hardware Test Mode to verify the printer detects the tray 1 present sensor. If the sensor is not detected, check the sensor for correct installation and connection at the tray 2 board. If the installation is correct, replace the sensor.

200 Paper Jam message displays, paper is jammed before the input sensor OR Tray 2 Empty message displays when tray 2 has paper in the tray.
FRU 1 Paper Path/Guides/Tray 2 Action Check the paper path for any foreign objects. Make sure tray 2 is fully installed and the lift plate raises when the tray is inserted. Check the pick roll for signs of wear and correct installation. Replace as necessary. Check the solenoid for correct operation. Use the Solenoid Test to check for correct operation. Replace as necessary.

2

Pick Roll

3

Solenoid

Diagnostic Information 2-27

4045-XXX
FRU 4 Tray 2 Motor Action Use the Tray 2 Motor Test to check the tray 2 motor. Replace as necessary.

2-28 Service Manual

4045-XXX

Main Drive Service Check
Service Tip: Excessive gear or main drive assembly noise is usually caused by a defective motor assembly or engine board. Service Tip: If there are equally spaced horizontal lines across the page, go to "Print Quality - Evenly spaced horizontal lines or marks" on page 2-41. WARNING: Whenever the gearbox assembly is removed from the machine it must be handled very carefully. Do not allow any of the gears to come in contact with any metal or other hard surface to avoid gear damage. It is also very important not to let any dirt, paper, staples or other material come intact with the grease in the gearbox assembly.
FRU 1 Main Drive Assembly (Excessive noise or vibration) Action Remove the controller board and run the Main Motor Test in the Hardware Test Mode. If the noise goes away with the toner cartridge removed, inform the customer to replace the toner cartridge. Determine if the noise is in the main drive assembly, fuser, developer drive assembly or alignment assembly. Look for any loose, worn or binding parts in all assemblies. Repair as necessary. If a service error code 936 Transport Motor message displays, check the voltage at J3-6 and J3-8 on the engine board. The voltages measure approximately +5 V dc when the motor is not running and go to 0 V dc when the motor is running. If incorrect, replace the engine board. 2 Main Drive Motor Cable Check the continuity of the main drive motor cable. If incorrect, replace the cable.

Diagnostic Information 2-29

4045-XXX
FRU 3 Motor does not turn, no gear error code 936 or User message 201 Paper Jam displays. Action Check the voltages at J3 on the engine board with the main motor cable connected. J3-1 - +24 V dc J3-2 - +24 V dc J3-3 - Ground J3-4 - Ground J3-5 - +2.5 V dc J3-7 - +5 V dc J3-9 - +5 V dc If any voltage is incorrect, replace the FRUs in the following order: main drive motor assembly engine board

Operator Panel Service Check
Operator Panel Buttons Service Check Note: Before continuing with this service check do the "Button Test" on page 3-9 and "Operator Panel Tes