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4044-00XOptra

TM

E310

Lexmark and Lexmark with diamond

design are trademarks of Lexmark

International, Inc., registered in the

United States and/or other countries.

Table of Contents

Index

Safety and Notices

Trademarks

Start Diagnostics

Manuals Menu
http://../Menus/manmenu.pdfhttp://../Menus/manmenu.pdf

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First Edition (March 1999)

The following paragraph does not apply to any country where such provisions are

inconsistent with local law: LEXMARK INTERNATIONAL, INC. PROVIDES THISPUBLICATION AS IS WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS ORIMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OFMERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some states donot allow disclaimer of express or implied warranties in certain transactions; therefore, thisstatement may not apply to you.

This publication could include technical inaccuracies or typographical errors. Changes areperiodically made to the information herein; these changes will be incorporated in latereditions. Improvements or changes in the products or the programs described may bemade at any time.

A form for readers comments is provided at the back of this publication. If the form hasbeen removed, comments may be addressed to Lexmark International, Inc., DepartmentD22/035-3, 740 New Circle Road N.W., Lexington, Kentucky 40550, U.S.A. Lexmark mayuse or distribute any of the information you supply in any way it believes appropriatewithout incurring any obligation to you. You can purchase additional copies of publicationsrelated to this product by calling 1-800-553-9727. In other countries, contact your point ofpurchase.

Lexmark and Optra are trademarks of Lexmark International, Inc., registered in the UnitedStates 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. 1999.

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 insubparagraph (c)(1)(ii) of the Rights in Technical Data and Computer Software clause atDFARS 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vLaser Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vSafety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv

General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Diagnostic Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Service Error Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2User Error Message Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6Power-On Self Test (POST). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9Symptom Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

Service Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12Cooling Fan Service Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12Cover Open Switch Service Check . . . . . . . . . . . . . . . . . . . . . . 2-12Dead Machine Service Check . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

Fuser Service Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15Main Motor Service Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18Operator Panel Service Check. . . . . . . . . . . . . . . . . . . . . . . . . . 2-19Operator Panel Button Service Check . . . . . . . . . . . . . . . . . . . . 2-20Paper Feed Service Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20Print Quality Service Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23Parallel Port Service Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-30

Diagnostic Aids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Memory Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1Diagnostic Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1Print Quality Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2User Mode Print Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3Configuration Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3Hex Trace. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11Restoring Factory Defaults. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12Engine Clean Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13

Toggle Demo/Normal Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14Printer Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14Paper Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15

Repair Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Handling ESD-Sensitive Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

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Removal Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2Screw Identification Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2Frame Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-7Fuser Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-8HVPS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-10Interconnect Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-12Engine/LVPS Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-13Main Drive Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-15Pick Roll Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-16Printhead Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-18Transfer Roll . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-19

Connector Locations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1

Controller Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1Engine/LVPS Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4High Voltage Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-9Interconnect Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-12

Parts Catalog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1

Assembly 1: Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2

Assembly 2: Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-6Assembly 3: Fuser. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-10Assembly 4: Main Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-12Assembly 5: Paper Feed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-14Assembly 6: Electronics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-18Assembly 7: Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-20Assembly 8: Miscellaneous . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-21

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-1

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Notices and Safety Information

Laser Notice

The printer is certified in the U.S. to conform to the requirements ofDHHS 21 CFR Subchapter J for Class I (1) laser products, andelsewhere is certified as a Class I laser product conforming to therequirements 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 5milliwatt gallium arsenide laser operating in the wavelength region of770-795 nanometers. The laser system and printer are designed sothere is never any human access to laser radiation above a Class Ilevel during normal operation, user maintenance, or prescribedservice condition.

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Laser Advisory Label

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Class 1 Laser Statement Label

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Laser

Der Drucker erfllt gem amtlicher Besttigung der USA die

Anforderungen der Bestimmung DHHS (Department of Health andHuman Services) 21 CFR Teil J fr Laserprodukte der Klasse I (1).In anderen Lndern gilt der Drucker als Laserprodukt der Klasse I,der die Anforderungen der IEC (International ElectrotechnicalCommission) 825 gem amtlicher Besttigung erfllt.

Laserprodukte der Klasse I gelten als unschdlich. Im Inneren desDruckers befindet sich ein Laser der Klasse IIIb (3b), bei dem es

sich um einen Galliumarsenlaser mit 5 Milliwatt handelt, der Wellender Lnge 770-795 Nanometer ausstrahlt. Das Lasersystem und derDrucker sind so konzipiert, da im Normalbetrieb, bei der Wartungdurch den Benutzer oder bei ordnungsgemer Wartung durch denKundendienst Laserbestrahlung, die die Klasse I bersteigen wrde,Menschen keinesfalls erreicht.

Avis relatif lutilisation de laser

Pour les Etats-Unis : cette imprimante est certifie conforme auxprovisions DHHS 21 CFR alina J concernant les produits laser deClasse I (1). Pour les autres pays : cette imprimante rpond auxnormes IEC 825 relatives aux produits laser de Classe I.

Les produits laser de Classe I sont considrs comme des produitsnon dangereux. Cette imprimante est quipe dun laser de Classe

IIIb (3b) (arsniure de gallium dune puissance nominale de 5milliwatts) mettant sur des longueurs donde comprises entre 770et 795 nanomtres. Limprimante et son systme laser sont conuspour impossible, dans des conditions normales dutilisation,dentretien par lutilisateur ou de rvision, lexposition desrayonnements laser suprieurs des rayonnements de Classe I .

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Avvertenze sui prodotti laser

Questa stampante certificata negli Stati Uniti per essere conforme

ai requisiti del DHHS 21 CFR Sottocapitolo J per i prodotti laser diclasse 1 ed certificata negli altri Paesi come prodotto laser diclasse 1 conforme ai requisiti della norma CEI 825.

I prodotti laser di classe non sono considerati pericolosi. Lastampante contiene al suo interno un laser di classe IIIb (3b)allarseniuro di gallio della potenza di 5mW che opera sullalunghezza donda compresa tra 770 e 795 nanometri. Il sistema

laser e la stampante sono stati progettati in modo tale che lepersone a contatto con la stampante, durante il normalefunzionamento, le operazioni di servizio o quelle di assistenzatecnica, non ricevano radiazioni laser superiori al livello della classe1..

Avisos sobre el lser

Se certifica que, en los EE.UU., esta impresora cumple losrequisitos para los productos lser de Clase I (1) establecidos en elsubcaptulo J de la norma CFR 21 del DHHS (Departamento deSanidad y Servicios) y, en los dems pases, rene todas lascondiciones expuestas en la norma IEC 825 para productos lser deClase I (1).

Los productos lser de Clase I no se consideran peligrosos. La

impresora contiene en su interior un lser de Clase IIIb (3b) dearseniuro de galio de funcionamiento nominal a 5 milivatios en unalongitud de onda de 770 a 795 nanmetros. El sistema lser y laimpresora estn diseados de forma que ninguna persona puedaverse afectada por ningn tipo de radiacin lser superior al nivel dela Clase I durante su uso normal, el mantenimiento realizado por elusuario o cualquier otra situacin de servicio tcnico.

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Declarao sobre Laser

A impressora est certificada nos E.U.A. em conformidade com os

requisitos da regulamentao DHHS 21 CFR Subcaptulo J para aClasse I (1) de produtos laser. Em outros locais, est certificadacomo um produto laser da Classe I, em conformidade com osrequisitos da norma IEC 825.

Os produtos laser da Classe I no so considerados perigosos.Internamente, a impressora contm um produto laser da Classe IIIb(3b), designado laser de arseneto de potssio, de 5 milliwatts

,operando numa faixa de comprimento de onda entre 770 e 795nanmetros. O sistema e a impressora laser foram concebidos deforma a nunca existir qualquer possiblidade de acesso humano aradiao laser superior a um nvel de Classe I durante a operaonormal, a manuteno feita pelo utilizador ou condies deassistncia prescritas.

Laserinformatie

De printer voldoet aan de eisen die gesteld worden aan eenlaserprodukt van klasse I. Voor de Verenigde Staten zijn deze eisenvastgelegd in DHHS 21 CFR Subchapter J, voor andere landen inIEC 825.

Laserprodukten van klasse I worden niet als ongevaarlijkaangemerkt. De printer is voorzien van een laser van klasse IIIb

(3b), dat wil zeggen een gallium arsenide-laser van 5 milliwatt meteen golflengte van 770-795 nanometer. Het lasergedeelte en deprinter zijn zo ontworpen dat bij normaal gebruik, bij onderhoud ofreparatie conform de voorschriften, nooit blootstelling mogelijk isaan laserstraling boven een niveau zoals voorgeschreven is voorklasse 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. Printerenindeholder internt en Klasse IIIB (3b)-laser, der nominelt er en 5milliwatt galliumarsenid laser, som arbejder p blgelngdeomrdet770-795 nanometer. Lasersystemet og printeren er udformetsledes, at mennesker aldrig udsttes for en laserstrling overKlasse I-niveau ved normal drift, brugervedligeholdelse eller

obligatoriske servicebetingelser.

Huomautus laserlaitteesta

Tm kirjoitin on Yhdysvalloissa luokan I (1) laserlaitteiden DHHS21 CFR Subchapter J -mrityksen mukainen ja muualla luokan Ilaserlaitteiden IEC 825 -mrityksen mukainen.

Luokan I laserlaitteiden ei katsota olevan vaarallisia kyttjlle.Kirjoittimessa on sisinen luokan IIIb (3b) 5 milliwatingalliumarsenidilaser, joka toimii aaltoalueella 770 - 795 nanometri.Laserjrjestelm ja kirjoitin on suunniteltu siten, ett kyttj eialtistu luokan I mrityksi voimakkaammalle steilylle kirjoittimennormaalin toiminnan, kyttjn tekemien huoltotoimien tai muidenhuoltotoimien yhteydess.

VARO! Avattaessa ja suojalukitus ohitettaessa olet alttiinankymttmlle lasersteilylle. l katso steeseen.

VARNING! Osynlig laserstrlning nr denna del r ppnad ochsprren r urkopplad. Betrakta ej strlen.

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Laser-notis

Denna skrivare r i USA certifierad att motsvara kraven i DHHS 21

CFR, underparagraf J fr laserprodukter av Klass I (1). I andralnder uppfyller skrivaren kraven fr laserprodukter av Klass I enligtkraven i IEC 825.

Laserprodukter i Klass I anses ej hlsovdliga. Skrivaren har eninbyggd laser av Klass IIIb (3b) som bestr av en laserenhet avgallium-arsenid p 5 milliwatt som arbetar i vglngdsomrdet 770-795 nanometer. Lasersystemet och skrivaren r utformade s att det

aldrig finns risk fr att ngon person utstts fr laserstrlning verKlass I-niv vid normal anvndning, underhll som utfrs avanvndaren eller annan freskriven servicetgrd.

Laser-melding

Skriveren er godkjent i USA etter kravene i DHHS 21 CFR,underkapittel J, for klasse I (1) laserprodukter, og er i andre landgodkjent som et Klasse I-laserprodukt i samsvar med kravene i IEC825.

Klasse I-laserprodukter er ikke betrakte som farlige. Skrivereninneholder internt en klasse IIIb (3b)-laser, som bestr av engallium-arsenlaserenhet som avgir strling i blgelengdeomrdet770-795 nanometer. Lasersystemet og skriveren er utformet slik atpersoner aldri utsettes for laserstrling ut over klasse I-niv under

vanlig bruk, vedlikehold som utfres av brukeren, eller foreskrevneserviceoperasjoner.

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Avs sobre el Lser

Segons ha estat certificat als Estats Units, aquesta impressora

compleix els requisits de DHHS 21 CFR, apartat J, pels producteslser de classe I (1), i segons ha estat certificat en altres llocs, s unproducte lser de classe I que compleix els requisits dIEC 825.

Els productes lser de classe I no es consideren perillosos. Aquestaimpressora cont un lser de classe IIIb (3b) darsenir de gal.li,nominalment de 5 mil.liwats, i funciona a la regi de longitud donade 770-795 nanmetres. El sistema lser i la impressora han sigut

concebuts de manera que mai hi hagi exposici a la radiaci lserper sobre dun nivell de classe I durant una operaci normal, durantles tasques de manteniment dusuari ni durant els serveis quesatisfacin 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 strictglobal safety standards with the use of specific Lexmarkcomponents. The safety features of some parts may notalways be obvious. Lexmark is not responsible for the use ofother replacement parts.

The maintenance information for this product has beenprepared for use by a professional service person and is notintended to be used by others.

There may be an increased risk of electric shock andpersonal injury during disassembly and servicing of thisproduct. Professional service personnel should understandthis and take necessary precautions.

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Consignes de Scurit

Ce produit a t conu, test et approuv pour respecter les

normes strictes de scurit globale lors de l'utilisation decomposants Lexmark spcifiques. Les caractristiques descurit de certains lments ne sont pas toujours videntes.Lexmark ne peut tre tenu responsable de l'utilisationd'autres pices de rechange.

Les consignes d'entretien et de rparation de ce produits'adressent uniquement un personnel de maintenance

qualifi. Le dmontage et l'entretien de ce produit pouvant prsenter

certains risques lectriques, le personnel d'entretien qualifidevra prendre toutes les prcautions ncessaires.

Norme di sicurezza

Il prodotto stato progettato, testato e approvato inconformit a severi standard di sicurezza e per lutilizzo concomponenti Lexmark specifici. Le caratteristiche di sicurezzadi alcune parti non sempre sono di immediata comprensione.Lexmark non responsabile per lutilizzo di parti di ricambiodi altri produttori.

Le informazioni riguardanti la manutenzione di questoprodotto sono indirizzate soltanto al personale di assistenzaautorizzato.

Durante lo smontaggio e la manutenzione di questo prodotto,il rischio di subire scosse elettriche e danni alla persona pielevato. Il personale di assistenza autorizzato, deve, quindi,adottare le precauzioni necessarie.

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Sicherheitshinweise

Dieses Produkt und die zugehrigen Komponenten wurden

entworfen und getestet, um beim Einsatz die weltweitgltigen Sicherheitsanforderungen zu erfllen. Diesicherheitsrelevanten Funktionen der Bauteile und Optionensind nicht immer offensichtlich. Sofern Teile eingesetztwerden, die nicht von Lexmark sind, wird von Lexmarkkeinerlei Verantwortung oder Haftung fr dieses Produktbernommen.

Die Wartungsinformationen fr dieses Produkt sindausschlielich fr die Verwendung durch einenWartungsfachmann bestimmt.

Whrend des Auseinandernehmens und der Wartung desGerts besteht ein zustzliches Risiko eines elektrischenSchlags und krperlicher Verletzung. Das zustndigeFachpersonal sollte entsprechende Vorsichtsmanahmentreffen.

Pautas de Seguridad

Este producto se ha diseado, verificado y aprobado paracumplir los ms estrictos estndares de seguridad globalusando los componentes especficos de Lexmark. Puedeque las caractersticas de seguridad de algunas piezas no

sean siempre evidentes. Lexmark no se hace responsabledel uso de otras piezas de recambio.

La informacin sobre el mantenimiento de este productoest dirigida exclusivamente al personal cualificado demantenimiento.

Existe mayor riesgo de descarga elctrica y de daospersonales durante el desmontaje y la reparacin de la

mquina. El personal cualificado debe ser consciente de estepeligro y tomar las precauciones necesarias.

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Informaes de Segurana

Este produto foi concebido, testado e aprovado para

satisfazer os padres globais de segurana na utilizao decomponentes especficos da Lexmark. As funes desegurana de alguns dos componentes podem no sersempre bvias. A Lexmark no responsvel pela utilizaode outros componentes de substituio.

As informaes de segurana relativas a este produtodestinam-se a profissionais destes servios e no devem ser

utilizadas por outras pessoas. Risco de choques elctricos e ferimentos graves durante a

desmontagem e manuteno deste produto. Os profissionaisdestes servios devem estar avisados deste facto e tomar oscuidados necessrios.

Informaci de Seguretat

Aquest producte est dissenyat, comprovat i aprovat per tald'acomplir les estrictes normes de seguretat globals amb lautililitzaci de components especfics de Lexmark. Lescaracterstiques de seguretat d'algunes peces pot ser que nosempre siguin bvies. Lexmark no es responsabilitza de l'usd'altres peces de recanvi.

La informaci pel manteniment daquest producte estorientada exclusivament a professionals i no est destinada aning que no ho sigui.

El risc de xoc elctric i de danys personals pot augmentardurant el procs de desmuntatge i de servei daquestproducte. El personal professional ha destar-ne assabentat iprendre les mesures convenients.

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Chinese Safety Information

Korean Safety Information

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General Information 1-1

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1. General Information

This printer is a letter-quality laser page printer designed to attach toan IBM Personal Computer or other computers compatible with theIBM Personal Computer (with 386 processor or higher) andMacintosh Computers via the USB connection.

The printer is capable of printing at speeds of 8 pages per minutewith a true 600 dpi resolution or 1200 dpi Image Quality resolution.The base printer comes with 2MB of memory and is expandable to66MB via the single DRAM SIMM slot. User flash memory is also

available in 1MB, 2MB and 4MB.

Options

The following options are available. Some options are not availablein every country. Contact your point of purchase for options availablein your country.

Memory options of 8MB, 16MB, 32MB and 64MBFlash memory options of 1MB, 2MB and 4MB

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Acronyms

CSU Customer Setup

DRAM Dynamic Random Access MemoryEP Electrophotographic ProcessEPROM Erasable, Programmable Read-Only

MemoryESD Electrostatic DischargeFRU Field Replaceable UnitHVPS High Voltage Power Supply

LASER Light Amplification by Stimulated Emissionof RadiationLCD Liquid Crystal DisplayLED Light-Emitting DiodeLVPS Low Voltage Power SupplyMROM Masked Read Only MemoryNVRAM Nonvolatile Random Access MemoryOEM Original Equipment Manufacturer

PC PhotoconductorPOST Power-On Self TestROM Read Only MemorySIMM Single In-Line Memory ModuleSRAM Static Random Access MemoryUPR Used Parts ReturnUSB Universal Serial BusV ac Volts alternating current

V dc Volts direct current

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Diagnostic Information 2-1

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2. Diagnostic Information

Start

CAUTION: NEVERmanually actuate or disable the top coverinterlock switch and the printhead shutter actuator at the sametime. To perform some of the service checks and tests, such astroubleshooting paper feed problems, you need to actuate the topcover interlock switch with the covers opened or removed and powerapplied to the machine. It is important for personal safety that you

DO NOT, FOR ANY REASON, disable the printhead shutter actuatorwhen power is on.

Remove power from the printer before you connect or disconnectany cable or electronic board or assembly for personal safety and toprevent damage to the printer.

Use the service error code, user error message, symptom table,service checks, and diagnostic aids in this chapter to determine thecorrective action necessary to repair a malfunctioning printer.

The lights on the operator panel can indicate either a user errormessage or service error message. When a service error occurs,the printer stops printing and all operator panel LEDs blink in acontinuous pattern, indicating a service error, until the printer ispowered off. If all operator panel LEDs are blinking, go to the ServiceError Codes on page 2-2.

When a user error message occurs, one or two operator panel LEDsare on solid or blinking. Go to the User Error Message Table onpage 2-6.

If your machine does not have a service error code and does notcomplete POST, go to the POST Symptom Table on page 2-10. If yourmachine completes POST without an error, and you have a

symptom, go to the Base Printer Symptom Table on page 2-10. Locateyour symptom and take the appropriate action.

If a service error code appears while you are working on themachine, go to the Service Error Codes on page 2-2 and take theindicated action for that error.

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Service Error Codes

Primary Service Error Codes

When a service error occurs the printer stops printing and alloperator panel LEDs blink in a continuous pattern, indicating aservice error, until the printer is powered off.

Press and release the operator panel button to display the serviceerror code. Locate the blinking LEDs in the following table and takethe indicated action.

Blinking Operator Panel LED Action

Software Service Error Code Run the Printer Diagnostic Test todiagnose between the ROM SIMMand the controller board. If no othererror code displays after the testcompletes, replace the controllerboard.

Fuser Failure Error Press and release the operatorpanel button to view the secondaryservice error code. Go toSecondary Service Error Codes onpage 2-5.

Laser Diode Failure Inspect the printhead cable andreplace as necessary. Replace theprinthead assembly. If this does notcorrect the problem, replace theengine/LVPS board.

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Mirror Motor Failure Inspect the printhead cable and

replace as necessary. Replace theprinthead assembly. If this does notcorrect the problem, replace theengine/LVPS board.

Optional Memory Error Replace the optional memory SIMM.If this does not correct the problem,

replace the controller board.

ROM Checksum Error Replace the ROM SIMM. If this doesnot correct the problem, replace thecontroller board.

Base Memory Error Replace the controller board

NVRAM Failure Error Replace the controller board


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ASIC Register Failure Error Replace the controller board

ASIC SRAM Failure Error Replace the controller board

Flash Memory Failure Error Replace the ROM SIMM w/Flash. Ifthis does not correct the problem,replace the controller board.

Font Checksum Failure Error Replace the ROM SIMM. If this doesnot correct the problem, replace thecontroller board.

Engine/LVPS BoardCommunications Failure Error

Replace the engine/LVPS board


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4044-001

Secondary Service Error Codes

For some service error codes, a second service error code is usedto further describe the error. When a service error occurs, pressing

the operator panel button after viewing the primary service errorcode displays the secondary service error code. The following tablecontains the secondary service error codes.


Fuser Failure - Over Temperature Go to the Hot Fuser Service Checkon page 2-18.

Fuser Failure - UnderTemperature

Go to the Cold Fuser ServiceCheck on page 2-15.

Fuser Failure - Thermistor Open Go to the Fuser Service Check onpage 2-15.

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User Error Message Table

Primary User Error Message Table

When a user error message occurs the printer stops printing andone or two operator panel LEDs are on solid or blinking until theprinter is powered off. Locate the printers LED Status in thefollowing table and take the indicated action.

User Error Message LED Status Action

Paper Jam Paper Jam on solid Open cover and clearany paper jams. Closethe top cover. If theerror message is stillpresent, go tothePaper FeedService Check onpage 2-20.

Load Manual Paper/Envelope

Load Paper blinks andPress Button on solid

Load media into themanual slot and pushthe operator panelbutton to resumeprinting one sheet ordo an operator panelreset by pressing andholding the operatorpanel button for morethan three seconds.

Load Paper/LoadEnvelope

Load Paper on solidand Press Button onsolid

Load media in theappropriate paper trayand push the operatorpanel button toresume printing or doan operator panelreset by pressing andholding the operatorpanel button for morethan three seconds.

Top Cover Open Error on solid Close the top cover. Ifthe error LED remainson solid and POSTdoes not continue, goto theCover OpenSwitch ServiceCheck on page 2-12.

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Memory Full/Complex

Page/ResolutionReduction Warning/Font Error/ ResourceSave Off DeficientMemory

Error on solid and

Press Button on solid

The printer memory is

full or the page is toocomplex to print. Theprinter is forced toreduce the resolutionof a formatted page to300 dpi beforeprinting, or the printeris unable to maintainthe required datatransfer rate. Go to the

Secondary UserError Message Tableon page 2-8.

Flash Memory Full Error blinks and PressButton on solid

This condition onlyoccurs when theFlash memory is full.


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Secondary User Error Message Table

Press and release the operator panel button two times to display theuser secondary error LED status. Each press and release action

must be performed within a half second. Locate the printers LEDstatus in the following table and take the indicated action.


Complex Page Ready, Error, andPress Button on solid

Switch the printingmode to a differentprinting mode using

the Lexmark driver forWindows, or push theoperator panel buttonto resume printing, ordo an operator panelreset by pressing andholding the operatorpanel button for morethan three seconds.

Memory Full Ready, Data, Error,and Press Button onsolid

Change the printingmode to Quick PrintPlus or reduce thecomplexity of the jobor the resolution, orpush the operatorpanel button toresume printing, or doan operator panelreset by pressing and

holding the operatorpanel button for morethan three seconds.

Resolution Reduction Ready, Data blinkingand the Error, PressButton on solid

Switch from the GL/2or raster mode toQuick Print Plus modeusing the Lexmarkdriver for Windows, orpress the operator

panel button toresume printing, or doan operator panelreset by pressing andholding the operatorbutton for more thanthree seconds.

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4044-001

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 observingthe following:

1. All LEDs turn on solid.

2. All LEDs turn off.3. The cooling fan and fuser lamp turn on.

Note: The fuser lamp turns off once the thermistor reachesoperating temperature. As the temperature drops, the lampturns back on automatically.

4. The LEDs begin to turn on then off sequentially.5. Once the fuser has reached operating temperature, the main

motor turns on and the pick roller shaft assembly rotates tohome position.

6. The Ready LED turns on solid while the Data LED blinks.7. The engine/LVPS board checks the status of the input and exit

paper feed sensors.8. The main motor turns off.

9. The Data LED turns off.

Font Error Data blinking and

Error, Press Button onsolid

The print command is

requesting a font thatis not present orinstalled. The usermust select a differentfont or try turning theBest Fit setting on andretry the printcommand.

Resource Save Off

Deficient Memory

Ready blinking and

Error, Press Button onsolid

The printer lacks

sufficient memory toenable ResourceSave. It isrecommended thatthe user installadditional memory orset each link buffer tothe Auto value.


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Symptom Tables

POST Symptom Table

Base Printer Symptom Table

Symptom Action

The main motor, cooling fan andfuser do not come on.

Go to Cover Open Switch ServiceCheck on page 2-12.

POST completes except one ormore LEDs do not come on.

Go to theOperator Panel ServiceCheck on page 2-19.

None of the LEDs come on. Go to the Operator Panel Service

Check on page 2-19.

Main motor does not come on. Go to the Main Motor ServiceCheck on page 2-18.

Fan does not come on. Go to the Cooling Fan ServiceCheck on page 2-12.

Fuser lamp does not come on. Go to the Cold Fuser ServiceCheck on page 2-15.

Fuser lamp never turns off. Go to the Hot Fuser Service Checkon page 2-18.

The paper feed picks and tries tofeed paper.

Go to the Paper Feed ServiceCheck on page 2-20.

Symptom Action

Dead Machine (no power) Go to the Dead Machine ServiceCheck on page 2-13.

Fan noisy or not working Go to the Cooling Fan ServiceCheck on page 2-12.

Fuser parts melted Go to the Hot Fuser Service Check

on page 2-18.Fuser lamp doesnt light Go to Cold Fuser Service Check on

page 2-15.

Toner not fused to the paper Go to Cold Fuser Service Check onpage 2-15.

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Blank page Go to Blank page on page 2-23.

Black page Go to Black page on page 2-24.

Heavy background Go to Heavy background onpage 2-25.

Light print Go to Light print on page 2-28.

White or black lines or bands Go to White or black lines or bandson page 2-29.

Toner on back of page Go to Toner on back of page onpage 2-29.

Incorrect characters print Go to Incorrect characters print onpage 2-29.

Paper jams Go to Paper Feed Service Checkon page 2-20.

Main Motor noisy or does not

move

Go to Main Motor Service Check

on page 2-18.

Paper never picks Go to Paper never picks onpage 2-22.

Paper feeds continuously Go to Paper picks during POSTand/or continuously on page 2-21.

Paper skew Go to Paper Feed Service Checkon page 2-20.

Printer not communicating withhost

Go to Parallel Port Service Checkon page 2-30.

Paper wrinkled or bent Go to Paper "trees", wrinkles,stacks poorly or curls on page 2-23.

Top cover will not close Go to Cover Open Switch ServiceCheck on page 2-12.

Operator panel button does notrespond Go to Operator Panel ButtonService Check on page 2-20.

Operator panel LEDs do not lightor very dim

Go to Operator Panel ServiceCheck on page 2-19.

Symptom Action

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Service Checks

Note: All service checks which involve measuring voltages of the

circuit boards (except the controller board) must be performed withthe engine/LVPS to controller board cable disconnected and theprinter positioned on its left side. This provides the servicer accessto the various circuit boards underneath the printer while supplyingnecessary power to the rest of the printer.

Cooling Fan Service Check

Cover Open Switch Service Check

Note: Make sure a toner cartridge is installed and the cover closesall the way, engaging the cover open switch lever. The lever caneasily be positioned incorrectly if the top cover has been removedand replaced.

FRU Action

Interconnect BoardCooling Fan

Make sure motor cable is properlyseated in location CN408 on theinterconnect board. Disconnect thecable and check connector-pinCN408-3 for +24 V dc. If the voltageis not present, replace theinterconnect board. If the voltage is

present, replace the cooling fan.

FRU Action

Cover Open Switch Make sure the cover open switchcable is properly seated in CN2 ofthe HVPS. Disconnect the cable andcheck the switch for continuity. Push

the cover open switch lever down toengage the switch and close thecircuit. If the circuit does not close,replace the switch.

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Dead Machine Service Check

Note: Check the AC line voltage. The voltage should be within the

following limits:

100 V ac - 127 V ac for the low voltage model printer

200 V ac - 240 V ac for the high voltage model printer

HVPS

Engine/LVPS Board

Measure the voltage at CN2-3 of the

HVPS. It measures +24 V dc. Ifvoltage is present at CN2-3, checkfor continuity between CN2-1 andCN1-2. If continuity does not exist,replace the HVPS. If continuity doesexist, check the HVPS to engine/LVPS board cable for continuity.Replace if defective. If voltage is notpresent at CN2-3, check the voltageat CN1-1. It measures +24 V dc. If it

does, replace the HVPS. If it doesnot, check the voltage at CN2-2 ofthe engine/LVPS board. It measures+24 V dc. If it does, replace theHVPS to engine/LVPS board cable.

FRU Action

LVPS Fuse Check the fuse on the LVPS forcontinuity. Replace with theappropriate fuse if blown. If a fuseblows again after being replaced,install a new fuse and go to Engine/LVPS Board on page 5-4 and checkthe engine/LVPS board output.

FRU Action

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Engine/LVPS Board

Power Switch

Disconnect the cables from CN2 and

CN5 and leave the cables connectedto the power switch attached. Withthe printer positioned on its left sideand the engine/LVPS boardpositioned on a flat surface, turn thepower switch on and check the ACline voltage at connector CN201. Ifno voltage is present, replace thepower switch. If line voltage ispresent, measure the voltages at

connectors CN2 and CN5. Go totheEngine/LVPS Board onpage 5-4and check for correctvoltage measurements. Replace theengine/LVPS board if any of thevoltage measurements are incorrect.

LVPS to Interconnect Board Cable Check the continuity of the LVPS tointerconnect board cable. Replacethe cable if it does not measure

continuity.Interconnect Board Reconnect the LVPS to the

interconnect board cable. Go toInterconnect Board on page 5-12and measure voltages on thefollowing connectors on theinterconnect board:

CN401/CN402/CN403/CN404/

CN405/CN407/CN408If any of the measured voltages areincorrect, replace the interconnectboard.

FRU Action

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4044-001

Fuser Service Check

Cold Fuser Service Check

When toner is partially fused to the paper, it is usually caused by lowfuser temperature.

Avoid handling the lamp as much as possible as it is easily broken.Be careful not to touch the glass housing with bare hands as skincontains acids that can weaken the glass.

The line voltage to the printer must be within the following limits:

100 V ac - 127 V ac for the low voltage model printer

200 V ac - 240 V ac for the high voltage model printer

Turn the printer off and wait a few minutes for the fuser lamp to cool.Turn the machine on and observe the lamp turning on during POST.You can see the lamp with the left side cover and fuser wire coverremoved.

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The fuser lamp does light

FRU Action

Thermistor If the fuser lamp comes on and afuser failure LED error code displays,be sure the thermistor is contactingthe hot roll and the thermistor cableis firmly seated in connector CN1 onthe LVPS board. Check for excessivetoner buildup on the surface of thethermistor. Clean or replace asnecessary. Turn the printer off and

disconnect the thermistor cable fromCN1 on the LVPS board. Measurethe resistance of the thermistorbetween CN-1 andCN-2. The resistance measuresapproximately 225K ohms whencool. Replace the thermistor asnecessary.

Fuser Lamp Make sure the correct voltage lamp

is installed. The voltage rating isstamped on one of the lampcontacts.

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The fuser lamp does not light

FRU Action

Fuser LampLamp CableThermistorLVPS

Turn the printer off and disconnectthe fuser lamp wires from the fuser.Check for continuity across the fuserlamp wire contacts. If there iscontinuity, go to step 1: Continuity.If there is no continuity, go tostep 2: No Continuity.

Step 1: Continuity

Measure the voltage at connectorCN202 on the LVPS. It should matchthe line voltage. If it does not,replace the LVPS. If line voltage ispresent, check the fuser lamp cablefor continuity. Replace ifdefective.Make sure the fuserthermistor is correctly connected toCN1 on the LVPS. If the problem

persists, disconnect the thermistorcable from CN1 on the LVPS boardand measure the voltage betweenCN1-1 and ground. The voltagemeasures approximately 3.9 V dc. Ifthe voltage is incorrect, replace theLVPS. If correct, replace thethermistor.

Step 2: No Continuity

Check the thermal fuse for continuity.If incorrect, replace the thermal fuse.If correct, replace the lamp.

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Hot Fuser Service Check

Main Motor Service Check

FRU Action

Fuser Thermistor Disconnect the thermistor cable fromthe LVPS. Measure the resistanceacross CN1-1 and CN1-2 of thethermistor cable. Replace thethermistor if the resistance is lowerthan 1k ohm or shorted.

Fuser Lamp Make sure the correct voltage fuserlamp is installed. Replace if

necessary.

FRU Action

Interconnect BoardMain Motor

Main Motor Cable

Check the interconnect board for thefollowing voltages:

CN405-3 +24 V dcCN405-4 +24 V dc

If these voltages are not correct,replace the interconnect board. Ifthese voltages are correct, check themain motor cable for continuity. Ifcontinuity exists on each wire,replace the main motor. If continuity

does not exist on one or more of thewires, replace the cable.

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Operator Panel Service Check

Inspect the operator panel cable for damage. Make sure the cable isplugged in securely.

Run POST and check each LED for proper operation.

FRU Action

Operator PanelOperator Panel Cable

If more than one LED does not turnon or an individual LED stays onsolid during POST, check the

operator panel cable for continuity.Replace if defective. If the cablemeasures continuity, replace theoperator panel.

Operator PanelOperator Panel CableController Board

If all LEDs are dim and operateerratically during POST or all LEDscome on and stay on solid duringPOST, replace the following FRUsone at a time in the order shown:

Controller BoardOperator PanelOperator Panel Cable

If none of the LEDs come on, makesure the cable is properly connectedto the operator panel and thecontroller board. Disconnect thecable and check it for continuity.

Replace if necessary. If the cablemeasures continuity, measure thefollowing voltages with the printer onat idle:

U5-1: GroundU5-2: +5 V dcU5-3: +5 V dcU5-5: +5 V dcU5-6: Ground

If these voltages are not correct,replace the controller board. If thesevoltages are correct, replace theoperator panel.

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Operator Panel Button Service Check

Paper Feed Service Check

Paper Jam error indication during POST

FRU Action

Operator PanelOperator Panel Cable

Disconnect the operator panel fromthe operator panel cable. Check thecontinuity between U5-1 and U5-2on the operator panel as you pressthe operator panel button. As thebutton is pressed, continuity ispresent. Replace the operator panelif continuity is not present. Ifcontinuity is present, replace the

operator panel cable.

FRU Action

Exit Sensor Flag If the exit sensor flag is not restingwithin the paper exit sensor duringPOST, the printer displays a paperjam message. Make sure the flag isoperating freely and correctlyinstalled.

Input Paper Feed Sensor Make sure the input paperfeedsensor is working properly. A stuck

or incorrectly installed sensorcauses this error.

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Paper picks during POST and/or continuously

Paper picks but stops about an inch down the page

Paper picks but stops half way through the printer

FRU Action

Pick Roller ClutchSolenoid

Check the pick roller clutch for wear.The solenoid interacts with theclutch controlling motion of the pickroller. If the cam surface of the pickroller clutch assembly is worn, thesolenoid may not stop the pick rollerfrom rotating. Replace the pick rollerclutch assembly if necessary. Makesure the spring on the solenoid is

properly installed. If the spring isimproperly installed or missing, thepick roller will continuously pickpaper.

FRU Action

Roller Guides Check for correct position of rollerguides on pick roller assembly.

FRU Action

Input Paper Feed SensorInterconnect Board

Make sure the input paper feedsensor is working properly. Check fora broken or stuck flag on the inputpaper feed sensor. Check to makesure the cable is seated on theCN401 connector on theinterconnect board. Disconnect thecable and check for the followingvoltages:

CN401-3 +5 V dcCN401-4 Ground

If these voltages are not correct,replace the interconnect board. Ifcorrect, replace the input paper feedsensor.

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Paper never picks

Paper occasionally picks or picks multiple sheets at once

FRU Action

Paper Tray Make sure the paper tray is correctlyinstalled. The black mylar guidesheet in the front of the tray must bepositioned in the paper path justbehind the pick roller assembly. Thisguide sheet can easily block thepaper path if installed incorrectly.

Pick Roller Solenoid Make sure solenoid is installed

correctly and its cable is plugged intoCN402 on the interconnect board. Ifinstallation is correct, disconnect thesolenoid and check CN402-1 for+24 V dc. If the voltage is present,replace the solenoid. If the voltage isnot present, replace the interconnectboard.

FRU Action

Pick Roller Assembly Check pick roller assembly for wear.Replace as necessary.

Paper Separator Assembly Check the friction pad on the paperseparator for signs of wear. Replace

as necessary.

Pick Roller Pad Assembly Check the friction pad on the pickroller pad assembly for signs ofwear. Replace as necessary.

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Paper "trees", wrinkles, stacks poorly or curls

Print Quality Service Check

Blank page

FRU Action

Transfer Roller This problem is most likely due to aworn transfer roller. A worn transferroller causes the printer to run hotterthan required for the media beingprinted. Excessive heat can causepaper treeing problems, poorstacking or curl.

FRU Action

Toner Cartridge Remove the toner cartridge andgently shake the assembly to evenlydistribute the toner.

PrintheadPrinthead CableHVPSEngine/LVPS Board

Blank pages can be caused by adefective printhead assembly, highvoltage power supply or engine/LVPS board. Disconnect theprinthead cable from the HVPS andmeasure the signals on connectorsCN3 and CN4. Go to the HighVoltage Power Supply on page 5-9in the connector locations chapterand check the voltagemeasurements. If the voltages arecorrect, check the printhead cablefor continuity. If the cable measurescontinuity, replace the printhead. Ifthe cable does not measurecontinuity, replace the cable. If thevoltage measurements are notcorrect, replace the HVPS. If the

problem still exists, replace theengine/LVPS board.

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Black page

Note: Incorrect laser exposure or incorrect charging of thephotoconductor causes an all black page.

FRU Action

HVPS Contacts Check the contacts forcontamination and correctinstallation. Replace as necessary.

Engine/LVPS BoardHVPS Cable

HVPS

Make sure the HVPS to engine/LVPS cable is correctly installed.

Disconnect the cable and measurethe signals on CN2 of the engine/LVPS board. Go to Engine/LVPSBoard on page 5-4and check thevoltage measurements. If thevoltages are not correct, replace theengine/LVPS board. If the voltagesare correct, check the HVPS toengine/LVPS cable for continuity. Ifthe cable does not measurecontinuity, replace the cable. If thecable measures continuity, replacethe HVPS.

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Heavy background

Poor development or poorly charged toner particles cause excessivebackground. This is more noticeable as the toner cartridge nears

end of life.

FRU Action

Toner Cartridge Make sure toner cartridge iscorrectly installed and the highvoltage contacts are clean. If thecartridge is installed correctly, try a

new cartridge.HVPS ContactsHVPS BoardEngine/LVPS Board

Check the contacts for correctinstallation and contamination wherecontact is made with the tonercartridge and HVPS Board. Clean asnecessary. If this does not correctthe problem, replace the followingFRUs one at a time in the ordershown:

HVPS BoardEngine/LVPS Board

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Partial blank image/white spots (no periodic pattern)

Variation in image density horizontally across page

FRU Action

Toner Cartridge Remove the toner cartridge andgently shake the assembly to evenlydistribute the toner. If toner cartridgeis low, try a new one.

Fuser Backup Roller Springs Check left and right backup rollersprings and backup roller to ensureadequate even pressure is applied tothe fuser hotroll.

Paper Make sure recommended paper isbeing used.

FRU Action

Toner Cartridge The charge roll in the toner cartridgemay have an unbalanced pressureagainst the PC drum. Try a newtoner cartridge.

Transfer Roller Bearing AssemblyTransfer Roller

Check the springs in the left andright transfer roller bearings. Thebearing assemblies should supportthe transfer roller, applying evenpressure to the PC drum. Replace

either or both transfer roller bearingassemblies if the springs show signsof damage or fatigue. Inspect thetransfer roller for signs of wear ordamage and replace as necessary.

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Periodic irregularity down page

FRU Action

PC Drum (Toner Cartridge)

Distance Between Irregularity96.2 mm

The PC drum or gear driving the PCdrum may be contaminated ordamaged. Inform the customer toreplace the toner cartridge.

Charge Roller (Toner Cartridge)


The charge roller or gear driving thecharge roller may be contaminatedor damaged. Inform the customer toreplace the toner cartridge.

Supply Roller (Toner Cartridge)


The supply roller or gear driving thesupply roller may be contaminated ordamaged. Inform the customer toreplace the toner cartridge.

Developer Roller(Toner Cartridge)

Distance Between Irregularity

46.1 mm

The supply roller or gear driving thedeveloper roller may becontaminated or damaged. Informthe customer to replace the toner

cartridge.Transfer Roller


The transfer roller or gear driving thetransfer roller may contaminated ordamaged. Inspect the roller andgear. Replace as necessary.

Hot Roll

Distance Between Irregularity

56.4 mm

The hot roll of the fuser or geardriving the hot roll may becontaminated or damaged. Inspect

the hot roll and gear. Replace orclean as necessary.

Backup Roller


The backup roller of the fuser maybe contaminated or damaged.Inspect and replace as necessary.

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Poor fusing of image

Light print

FRU Action

Fuser Lamp The fuser may not be operating atthe proper temperature to fuse thetoner to the paper. Go to the ColdFuser Service Check on page 2-15.

Paper Make sure recommended paper isbeing used.

FRU Action

Toner Cartridge Make sure the toner cartridge isinstalled correctly and is not low ontoner. If the problem continues,install a new toner cartridge.

Transfer RollerHVPS Contact (Transfer Roller)HVPS Board

Check the transfer roller for signs oftoner buildup and contamination.Inspect the HVPS contact (transferroller) for contamination. Inspect theHVPS board for contaminationwhere it meets the HVPS contacts. Ifall components appear free ofcontamination, replace the followingFRUs one at a time in the ordershown:

Transfer RollerHVPS Contact (Transfer Roller)HVPS Board

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White or black lines or bands

Toner on back of page

Incorrect characters print

Make sure the correct printer driver software is installed. Incorrectsoftware can cause incorrect characters to print and the image maynot fit the page.

FRU Action

Toner CartridgePaper Feed Drive Gears

Banding appears as light or darkhorizontal lines on a uniformly graypage or on a page with a large areaof graphics. Banding is primarily dueto a variation in the speed of thepaper as it feeds through the printerespecially in the developer andtransfer process. Inspect the tonercartridge and paper feed

components, especially the drivegears, for signs of wear, debris,binds or damage.

FRU Action

Print Cartridge Inspect the overall paper path forsigns of spilled toner. Gently cleanthe contaminated areas with a softcloth or compressed air.

Fuser Hot RollBackup Roller

The fuser hot roll can cause toner onthe back of the paper if toner isbuilding up on the hot roll. Thisbuildup may transfer to the backuproller, later transferring to the

backside of the paper. Inspect thehot roll and backup roller for signs ofcontamination and replace asnecessary.

Transfer Roller A transfer roller contaminated withtoner can cause toner to transfer tobackside of printed pages. Inspectthe transfer roller for contaminationand replace as necessary.

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Parallel Port Service Check

1. Perform a print test to make sure the printer prints correctly.

2. Be sure the printer cable is designed for bidirectional printing.3. Be sure the user application is set up correctly. Improper set upcan prevent establishing a communication link with the printer.

4. Try enabling the parallel port pull-up resistors. Go to ParallelMode 1 on page 3-8. Try printing a test page after enablingresistors. If the printer still does not print, disable the resistors.

5. If the internal print test page prints correctly, the userapplication/printer driver is set up correctly and the correct bi-

directional parallel cable is installed, yet the printer still fails toprint on command from the host, replace the controller board.

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3. Diagnostic Aids

This chapter explains the tests and procedures you can run toidentify printer failures and verify that repairs have corrected theproblem.

Memory Test

The following tests run sequentially when performing this test:

Standard Memory Test

Optional Memory Test

The memory test runs automatically during POST if a different sizeoptional memory SIMM is installed since the last printer power on.

Perform the following steps to run the Memory Test:

1. Turn the printer off.

2. Open the top cover.3. Press and hold the operator panel button as you turn on theprinter. Release the button once the Error LED comes on solid.

4. Close the top cover.

5. If all the diagnostic tests run correctly, the Data LED blinks. If atest fails, the Error LED pattern for the service error code dis-plays on the operator panel. Go to the Service Error Codes onpage 2-2 and take the indicated action for that error.

Diagnostic Test

Once the memory test is complete, the diagnostic test pages can beprinted by briefly pressing the operator panel button. Two pages areprinted. The first page is a listing of various printer settings and codelevel. The second page is used to inspect registration. If the printerrequires a registration adjustment, you must contact your next level

of support to obtain the software utility that enables you to adjustregistration.

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Print Quality Test

There are three print quality test pages. The first page displays theinstalled printer base code level and user default settings for thefollowing:

Top Margin Offset

Left Margin OffsetPrinter Page Count

Installed Memory

PQET Setting (on/off)

Toner Saver (on/off)Print Resolution

Print Darkness

The next two test pages are used to evaluate print quality. One testpage is gray and the other is black. Perform the following steps toprint the second test page:

1. Turn the printer off.2. Open the top cover.

3. Turn the printer power on.4. When the Error LED comes on solid, double-click the operator

panel button.5. Once the Error and Press Button LEDs start blinking, close the

top cover.

6. The Ready LED comes on solid and the Error and Press Button

LED continue blinking.7. Double-click the operator button four times. The Ready and

Data LEDs come on solid while the Error and Press ButtonLEDs continue blinking.

8. Perform a long button press until all LEDs come on solid.

9. The test pages are printing.10. When the test pages have finished printing, the Ready LED

comes on solid and the Data LED goes off.Note: After the print quality test pages print, the printer automati-cally returns to the Ready mode.

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User Mode Print Test

The User Mode Print Test Page displays the user default values,installed options, printer features, various typefaces, and theinstalled printer base code level.

1. Turn the printer power on. The Ready LED comes on solid(printer is in the ready state).

2. Press and release the operator panel button.

3. The Ready LED comes on solid and the Data LED blinks indi-cating the printer is busy.

4. The test page prints and the operator panel Ready LED comeson solid and the Data LED turns off.

5. The printer returns to the Ready mode.

Configuration Mode

The configuration mode gives the ability to set the following printerfunctions through the operator panel:

Parallel Port SettingsEnable Port

NPA ModeProtocol

Mode 1Mode 2

Strobe Adjust

USB SettingsEnable Port

NPA Mode

PPDS Activated

Auto CRLF/LFCR

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Operator Panel Configuration Mode Button Definition

Perform the following steps to enter the configuration mode:

1. Turn the printer power off.2. Open the top cover.

3. Turn the printer power on.

4. When the Error LED comes on solid, double-click the operatorpanel button.

5. When the Error and Press Button LEDs start blinking, close thetop cover. The Ready LED comes on solid and the Error andPress Button LEDs continue blinking.

6. Double-click the operator panel button two times. The LoadPaper LED comes on solid while the Error and Press ButtonLEDs continue blinking.

7. Perform a long button press. All LEDs blink once. The ReadyLED stays on solid. The printer is in the configuration mode.

8. To exit the configuration mode, turn the printer power off.

Configuration Mode Operator Panel Overlays

When in configuration mode, the first menu item and its setting aredisplayed. The first menu item is the Parallel Port and is indicated by

Term Description Result

Brief Button Press Press the operatorpanel button no longerthan three seconds.

This action movesthrough the configura-tion mode settings.

Long Button Press Press and hold theoperator panel buttonfor more than threeseconds.

This action selectsand saves the settingfor the menu item dis-played. To indicatethat the setting is

saved, all LEDs blinkonce.

Double-Click ButtonPress

Press and release theoperator panel buttontwo times. Each pressand release actionmust be performedwithin a half second.

This action movesthrough the configura-tion mode menu.

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the solid Ready LED. The setting of the menu item is indicated bythe status of the Press Button LED. To change the menu itemsetting, briefly press the operator panel button. Once the setting youwant is indicated by the status of the Press Button LED, perform along button press to save the setting. All LEDs come on while thesetting is saved. To select other menu items, double-click theoperator panel button until the menu item LED you want is selected.

There are ten menu items that can be selected by using the fiveLEDs as indicated by the following overlays on two passes throughthe configuration menu. The first time through the menu the LEDselected is on solid. The second time through the menu the LED

selected is blinking.

First pass - LED on solid overlay.

Second pass - LED blinking overlay

Parallel Port

Parallel NPA

Parallel Protocol

CRLF/LFCR

PPDS

Off/On/Auto

Operator Panel Button

Parallel Mode 1Parallel Mode 2

Parallel Strobe

USB NPA

USB Port

Off/On/Auto

Operator Panel Button

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Configuration Mode Settings

The following is a description of the available configuration modemenu items and settings. The asterisk (*) indicates the factory

default setting.

Parallel Port

Parallel Port allows the user to enable or disable the parallel port. Ifthe port is not being used, disabling it frees allocated memory to beused to process print jobs.

Perform the following steps to change the Parallel Port setting:

1. Enter the configuration mode.

Note: The Parallel Port (Ready) LED comes on solid. Thecurrent Parallel Port setting is indicated by the Off/On/Auto(Press Button) LED. When the LED is off, the parallel port isdisabled. When the LED is *blinking, the parallel port is enabled.

2. Perform a brief button press to select the Parallel Port setting.

3. Perform a long button press. All LEDs blink once, indicating thesetting is saved.

4. Exit the configuration mode by turning the printer power off.

Parallel NPA

Parallel NPA mode allows two way communication between the hostand the printer.

Perform the following steps to change the Parallel NPA setting:


2. Perform a double click button press. This moves to the ParallelNPA item on the configuration menu. The Parallel NPA (Data)LED comes on solid.

3. The current Parallel NPA setting is indicated by the Off/On/Auto

(Press Button) LED. When the LED is on solid, all data received by the printermust be in NPA packets. Any non-packet data is rejected asbad packets.

When the LED is off, the printer is not performing any NPAprocessing.

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When the LED is *blinking, the printer examines incomingdata and decides whether it is receiving NPA packets.

4. Perform a brief button press to select the Parallel NPA setting.



Parallel Protocol

The printer supports two parallel protocol settings: standard andfastbytes. When the protocol is set to standard, information isreceived at a normal transmission rate. When the protocol is set tofastbytes, information can be received at a much faster transmissionrate provided the host computer supports the fastbytes mode.

Perform the following steps to change the Parallel Protocol setting:


2. Perform a double click button press twice. This moves to theParallel Protocol item on the configuration menu. The Parallel

Protocol (Load Paper) LED comes on solid.3. The current Parallel Protocol setting is indicated by the Off/On/

Auto (Press Button) LED. When the LED is off, the ParallelProtocol is set to standard. When the LED is *on, the ParallelProtocol is set to fastbytes. Perform a brief button press toselect the Parallel Protocol setting.



PPDS

To access the PPDS data stream, the PPDS setting must be set toactive. When PPDS is activated, the default Printer Language ischanged to PPDS and the default PCL and PostScript Smartswitchsettings are changed to Off.

Perform the following steps to change the PPDS setting:


2. Perform a double click button press three times. This moves tothe PPDS item on the configuration menu. The PPDS (PaperJam) LED comes on solid.

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3. The current PPDS setting is indicated by the Off/On/Auto (PressButton) LED. When the LED is *off, the PPDS is set to inactive.When the LED is on, the PPDS is set to active. Perform a briefbutton press to select the PPDS setting.



CRLF/LFCR

This function controls whether or not the printer automaticallyperforms a carriage return after a line feed control command and

whether or not the printer automatically performs a line feed after acarriage return control command.

Perform the following steps to change the CRLF/LFCR setting:

1. Enter the configuration mode.2. Perform a double click button press four times. This moves to

the CRLF/LFCR item on the configuration menu. The CRLF/

LFCR (Error) LED comes on solid.3. The current CRLF/LFCR setting is indicated by the Off/On/Auto

(Press Button) LED.

When the LED is *off, Auto CR after LF is off and Auto LFafter CR is off.

When the LED is on, Auto CR after LF is on and Auto LFafter CR is off.

When the LED is blinking, Auto CR after LF is off and Auto

LF after CR is on.4. Perform a brief button press to select the CRLF/LFCR setting.



Parallel Mode 1

Parallel Mode 1 controls whether or not resistors are enabled on theparallel post signals. The default is to not have the resistors enabled,however, this function is useful because some IBM clone PCs haveopen collector outputs on their parallel port signals.

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Perform the following steps to change the Parallel Mode 1 setting:


2. Perform a double click button press five times. This moves to theParallel Mode 1 item on the configuration menu. The ParallelMode 1 (Ready) LED is blinking.

3. The current Parallel Mode 1 setting is indicated by the Off/On/Auto (Press Button) LED. When the LED is off, the ParallelMode 1 is set to off. When the LED is *on, the Parallel Mode 1 isset to on. Perform a brief button press to select the ParallelMode 1 setting.



Parallel Mode 2

Parallel Mode 2 controls whether or not the parallel port data issampled on the leading or trailing edge of strobe. The default is tosample on the leading edge of strobe, however, some IBM clone

PCs assumes that a printer will sample on the trailing edge.

Perform the following steps to change the Parallel Mode 2 setting:


2. Perform a double click button press six times. This moves to theParallel Mode 2 item on the configuration menu. The ParallelMode 2 (Data) LED is blinking.

3. The current Parallel Mode 2 setting is indicated by the Off/On/Auto (Press Button) LED. When the LED is off, the ParallelMode 2 is set to sample on trailing edge. When the LED is *on,the Parallel Mode 2 is set to sample on leading edge. Perform abrief button press to select the Parallel Mode 2 setting.



Parallel Strobe

This setting allows the user to adjust the factory setting for theamount of time strobe is sampled to determine that valid data is

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available on the parallel port. Each increment of the strobe adjustvalue means the strobe is sampled 50ns longer.

Perform the following steps to change the Parallel Strobe Adjust:

1. Enter the configuration mode.2. Perform a double click button press seven times. This moves to

the Parallel Strobe item on the configuration menu. The ParallelStrobe (Load Paper) LED is blinking.

3. The current Parallel Strobe setting is indicated by the Off/On/Auto (Press Button) LED. When the LED is *off, the ParallelStrobe is set to normal. When the LED is on, the Parallel Strobe

is set to +1. When the LED is blinking, the Parallel Strobe is setto +2. Perform a brief button press to select the Parallel Strobesetting.



USB Port

This menu item allows the user to enable or disable the USB port. Ifthe port is not being used, disabling it frees allocated memory to beused to process print jobs.

Perform the following steps to change the USB Port setting:


2. Perform a double click button press eight times. This moves tothe USB Port item on the configuration menu. The USB Port(Paper Jam) LED is blinking.

3. The current USB Port setting is indicated by the Off/On/Auto(Press Button) LED. When the LED is off, the USB Port isdisabled. When the LED is *blinking, the USB Port is enabled.Perform a brief button press to select a different USB Portsetting.



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USB NPA

USB NPA mode allows for two way communication between the hostand the printer.

Perform the following steps to change the USB NPA setting:


2. Perform a double click button press nine times. This moves tothe USB NPA mode item on the configuration menu. The USBNPA (Error) LED is blinking.

3. The current USB NPA setting is indicated by the Off/On/Auto

(Press Button) LED. When the LED is off, the USB port does not search for NPA

data within the received data.

When the LED is *blinking, the USB port searches foroptional NPA data within the received data.

When the LED is on solid, the USB port requires that datasent to the printer be in NPA format.

4. Perform a brief button press to select a different USB NPAsetting.



Hex Trace

When the printer is in Hex Trace, it prints a hexadecimal and acharacter representation of a print job. The printer does notrecognize any print controls or commands in this mode. A Hex Traceprintout is used to help isolate the cause of print problems.

When a job is printed, the printer operator panel displays the HexTrace indication, (Ready LED blinking), showing that the printerremains in the Hex Trace mode. Turn the printer power off or do anoperator panel reset (long button press) to exit the Hex Trace mode.

Perform the following steps to enter the Hex Trace mode:

1. Turn the printer power off.

2. Open the top cover.

3. Turn the printer power on.

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4. When the Error LED comes on solid, double-click the opera-tor panel button.

5. Once the Error and Press Button LEDs start to blink, close

the top cover.6. The Ready LED comes on solid and the Error and PressButton LEDs continue blinking.

7. Double-click the operator button three times. The Paper JamLED comes on solid while the Error and Press Button LEDscontinue blinking.

8. Perform a long button press until all LEDs come on solid.The printer is in Hex Trace mode

9. To exit the Hex Trace mode, turn the printer power off.

Restoring Factory Defaults

Restoring factory defaults returns the printer settings to the originalfactory settings.

Perform the following steps to invoke factory defaults:


3. Turn the printer power on.4. When the Error LED comes on solid, double-click the opera-

tor panel button.

5. Once the Error and Press Button LEDs start blinking, closethe top cover.

6. The Ready LED comes on solid and the Error and PressButton LEDs continue blinking.

7. Double-click the operator button one time. The Data LEDcomes on solid while the Error and Press Button LEDs con-tinue blinking.


9. The printer is reset to factory defaults.

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Engine Clean Cycle

The Engine Clean Cycle function prints one blank page in a specialcleaning mode. The cleaning mode helps eliminate small specs oftoner present in the background when printing.

Perform the following steps to perform the Engine Clean Cycle:




top cover.

6. The Ready LED comes on solid and the Error and Press ButtonLEDs continue blinking.


8. The printer feeds one page from the automatic paper feed slot

and then returns to normal printing mode.

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Toggle Demo/Normal Mode

The Toggle Demo/Normal Mode function enables or disables theprinters retail demo mode. When the printer is in Demo mode, demopages can be printed by briefly pressing the operator panel button.

Perform the following steps to enter Toggle Demo/Normal Mode:




top cover.

6. The Ready LED comes on solid and the Error and Press ButtonLEDs continue blinking.

7. Double-click the operator button five times. The Ready andLoad Paper LEDs come on solid while the Error and Press

Button LEDs continue blinking.8. Perform a long button press until all LEDs come on solid. Theprinter is in Demo mode.

9. To return the printer to Normal mode, repeat steps 1 through 8.

Printer Operation

Paper is held in a 150 page tray where it is picked by a center-fed"D" shape pick roller. The paper follows an "L" shape path as itmoves through the printer. Images are created with toner on an OPCdrum within the toner cartridge. A transfer roller then draws the toneroff the OPC drum onto the paper. Once the toner is affixed to thepaper by the fuser, the paper exits either the top or front of theprinter.

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Paper Path

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4. Repair Information

CAUTION: Read the following before handling electronic parts.

Handling ESD-Sensitive Parts

Many electronic products use parts that are known to be sensitive toelectrostatic discharge (ESD). To prevent damage to ESD-sensitiveparts, follow the instructions below in addition to all the usualprecautions, such as turning off power before removing logic boards:

Keep the ESD-sensitive part in its original shipping container (aspecial ESD bag) until you are ready to install the part into themachine.

Make the least-possible movements with your body to preventan increase of static electricity from clothing fibers, carpets, andfurniture.

Put the ESD wrist strap on your wrist. Connect the wrist band tothe system ground point. This discharges any static electricity inyour body to the machine.

Hold the ESD-sensitive part by its edge connector shroud(cover); do not touch its pins. If you are removing a pluggablemodule, use the correct tool.

Do not place the ESD-sensitive part on the machine cover or ona metal table; if you need to put down the ESD-sensitive part forany reason, first put it into its special bag.

Machine covers and metal tables are electrical grounds. Theyincrease the risk of damage because they make a dischargepath from your body through the ESD-sensitive part. (Largemetal objects can be discharge paths without being grounded.)

Prevent ESD-sensitive parts from being accidentally touched byother personnel. Install machine covers when you are not work-ing on the machine, and do not put unprotected ESD-sensitive

parts on a table. If possible, keep all ESD-sensitive parts in a grounded metalcabinet (case).

Be extra careful in working with ESD-sensitive parts when cold-weather heating is used because low humidity increases staticelectricity.

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Removal Procedures

CAUTION: Be sure to unplug the power cord whenever you are

working on the printer with one of the covers removed. Be sure toremove the print cartridge before you perform removal procedures.

Screw Identification Table

Covers

Front Cover and Face Up Cover

1. Press the cover inward to release it and pull it forward.

Type 1 Screw Type 2 Screw Type 3 Screw Type 4 Screw

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2. Remove the face up cover.

3. Open the front cover.

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4. Remove the screw from the support.

Note: If you want to remove the front cover only, remove the twoscrews and then remove the panel board and board cover.

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Rear and Top Cover

1. Remove the three screws, press the retaining tabs and removethe rear cover.

2. Remove the front cover and face up cover.3. Remove the two screws and remove the top cover.

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Side Covers

1. Remove the front cover, face up cover, top cover and rear cover.2. Remove the two screws securing the rear of each side cover.3. Release the side cover tabs as shown and remove the left and

right side covers.

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Frame Assembly

1. Remove all covers.

2. Remove the HVPS.3. Remove the two screws and remove the solenoid.4. Remove the six screws and remove the frame assembly.

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Fuser Assembly


2. Remove the wire cover mounting screw (A).3. Remove the two fuser lamp wire mounting screws (B).4. Unplug the connector from the engine/LVPS board.5. Remove the two fuser mounting screws (C).

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6. Slide the fuser in the direction of the arrows and remove thefuser.

Note: The backup roller can fall from the printer if the printer is

turned on its side with the fuser removed.

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HVPS


2. Remove the four HVPS board mounting screws.

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3. Unplug the three cables from the connectors on top of theHVPS.

4. Unplug the cable from the lower connector inside the HVPS and

remove the HVPS.Note: The high voltage contacts can fall from the printer with theHVPS removed. Three contacts with the shorter springs areinstalled in the hole marked L+S. The contact with the longer springis installed in the hole marked L+L.

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Interconnect Board

1. Remove the LVPS.

2. Unplug all connectors from the interconnect board.3. Remove the screws and remove the interconnect board.

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Engine/LVPS Board

1. Turn the printer upside down.

2. Remove all screws securing the shield.3. Remove the shield.

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4. Unplug all the connectors from the engine/LVPS board.5. Remove the five screws and remove the engine/LVPS board.

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Main Drive Assembly

1. Remove all

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Documents