Lexmark and Lexmark with diamond
design are trademarks of Lexmark
International, Inc., registered in the
United States and/or other countries.
7001–001
Edition: April 2004
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.
Comments may be addressed to Lexmark International, Inc., Department D22A/032-2,
740 West New Circle Road, Lexington, Kentucky 40550, U.S.A or e-mail at
ServiceInfoAndTraining@Lexmark.com. 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.
References in this publication to products, programs, or services do not imply that the
manufacturer intends to make these available in all countries in which it operates. Any
reference to a product, program, or service is not intended to state or imply that only that
product, program, or service may be used. Any functionally equivalent product, program,
or service that does not infringe any existing intellectual property right may be used
instead. Evaluation and verification of operation in conjunction with other products,
programs, or services, except those expressly designated by the manufacturer, are the
user’s responsibility.
Lexmark, Lexmark with diamond design, MarkNet, MarkVision, and Optra are trademarks
of Lexmark International, Inc., registered in the United States and/or other countries.
ImageQuick, Optra Forms, and PictureGrade are trademarks of Lexmark International,
Inc.
Other trademarks are the property of their respective owners.
This software and any accompanying documentation provided under this agreement are
commercial computer software and documentation developed exclusively at private
expense.
The following laser notice labels may be affixed to this MFP as
shown:
Laser advisory label
7001-001
Laser notices vii
7001-001
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 60825-1.
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 wav elength 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) 60825-1 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.
viii Service Manual
7001-001
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 60825-1 relatives aux produits laser de Classe I.
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 60825-1.
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.
Laser notices ix
7001-001
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 60825-1 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 niv el de
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 60825-1.
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.
x Service Manual
7001-001
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 60825-1.
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.
Lasermeddelelse
Printeren er godkendt som et Klasse I-laserprodukt, i
overenstemmelse med kravene i IEC 60825-1.
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.
Laser notices xi
7001-001
Huomautus laserlaitteesta
Tämä kirjoitin on Yhdysvalloissa luokan I (1) laserlaitteiden DHHS
21 CFR Subchapter J -määrityksen mukainen ja muualla luokan I
laserlaitteiden IEC 60825-1 -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 60825-1.
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 770-
795 nanometer. Lasersystemet och skrivaren är utf ormade 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.
xii Service Manual
7001-001
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
60825-1.
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 60825-1.
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.
Laser notices xiii
7001-001
Japanese Laser Notice
Chinese Laser Notice
xiv Service Manual
Korean Laser Notice
7001-001
Laser notices xv
7001-001
xvi Service Manual
Safety information
• The safety of this product is based on testing and approvals of
the original design and specific components. The manufacturer
is not responsible for safety in the event of use of unauthorized
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.
•CAUTION: When you see this symbol, there is a
danger from hazardous voltage in the area of the
product where you are working. Unplug the product
before you begin, or use caution if the product must
receive power in order to perform the task.
Consignes de sécurité
7001-001
• La sécurité de ce produit repose sur des tests et des
agréations portant sur sa conception d'origine et sur des
composants particuliers. Le fabricant n'assume aucune
responsabilité concernant la sécurité en cas d'utilisation de
pièces de rechange non agréées.
• 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.
•ATTENTION : Ce symbole indique la présence
d'une tension dangereuse dans la partie du produit
sur laquelle vous travaillez. Débranchez le produit
avant de commencer ou faites preuve de vigilance si
l'exécution de la tâche exige que le produit reste sous
tension.
Safety information xvii
7001-001
Norme di sicurezza
• La sicurezza del prodotto si basa sui test e sull'approvazione
del progetto originale e dei componenti specifici. Il produttore
non è responsabile per la sicurezza in caso di sostituzione non
autorizzata delle parti.
• 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.
•ATTENZIONE: Questo simbolo indica la presenza
di tensione pericolosa nell'area del prodotto.
Scollegare il prodotto prima di iniziare o usare
cautela se il prodotto deve essere alimentato per
eseguire l'intervento.
Sicherheitshinweise
• Die Sicherheit dieses Produkts basiert auf Tests und
Zulassungen des ursprünglichen Modells und bestimmter
Bauteile. Bei Verwendung nicht genehmigter Ersatzteile wird
vom Hersteller keine Verantwortung oder Haftung für die
Sicherheit 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
Fachpersonal sollte entsprechende Vorsichtsmaßnahmen
treffen.
•ACHTUNG: Dieses Symbol weist auf eine
gefährliche elektrische Spannung hin, die in diesem
Bereich des Produkts auftreten kann. Ziehen Sie vor
den Arbeiten am Gerät den Netzstecker des Geräts,
bzw. arbeiten Sie mit g roßer Vorsicht, wenn das
Produkt für die Ausführung der Arbeiten an den
Strom angeschlossen sein muß.
xviii Service Manual
Pautas de Seguridad
• La seguridad de este producto se basa en pruebas y
aprobaciones del diseño original y componentes específicos.
El fabricante no es responsable de la seguridad en caso de uso
de piezas de repuesto no autorizadas.
• 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.
•PRECAUCIÓN: este símbolo indica que el voltaje
de la parte del equipo con la que está trabajando es
peligroso. Antes de empezar, desenchufe el equipo
o tenga cuidado si, para trabajar con él, debe
conectarlo.
Informações de Segurança
7001-001
• A segurança deste produto baseia-se em testes e aprovações
do modelo original e de componentes específicos. O fabricante
não é responsável pela segunrança, no caso de uso de peças
de substituição não autorizadas.
• 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.
•CUIDADO: Quando vir este símbolo, existe a
possível presença de uma potencial tensão perigosa
na zona do produto em que está a trabalhar. Antes
de começar, desligue o produto da tomada eléctrica
ou seja cuidadoso caso o produto tenha de estar
ligado à corrente eléctrica para realizar a tarefa
necessária.
Safety information xix
7001-001
Informació de Seguretat
• La seguretat d'aquest producte es basa en l'avaluació i
aprovació del disseny original i els components específics.
El fabricant no es fa responsable de les qüestions de
seguretat si s'utilitzen peces de recanvi no autoritzades.
• 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.
•PRECAUCIÓ: aquest símbol indica que el voltatge
de la part de l'equip amb la qual esteu treballant és
perillós. Abans de començar, desendolleu l'equip
o extremeu les precaucions si, per treballar amb
l'equip, l'heu de connectar.
xx Service Manual
7001-001
Safety information xxi
7001-001
Preface
This manual contains maintenance procedures for service
personnel. It is divided into the following chapters:
1. General information contains a general description of the MFP
and the maintenance approach used to repair it. Special tools
and test equipment are listed, as well as general environmental
and safety instructions.
2. Diagnostic information contains an error indicator table,
symptom tables, and service checks used to isolate failing field
replaceable units (FRUs).
3. Diagnostic aids contains tests and checks used to locate or
repeat symptoms of MFP problems.
4. Repair information provides instructions for making MFP
adjustments and removing and installing FRUs.
5. Connector locations uses illustrations to identify the connector
locations and test points on the printer.
6. Preventive maintenance contains the lubrication specifications
and recommendations to prevent problems.
7. Parts catalog contains illustrations and part numbers for
individual FRUs.
Definitions
Note: A note provides additional information.
Warning: A warning identifies something that might damage the
product hardware or software.
CAUTION: A caution identifies something that might cause a
servicer harm.
CAUTION: When you see this symbol, there is a
danger from hazardous voltage in the area of the
product where you are working. Unplug the product
before you begin, or use caution if the product must
receive power in order to perform the task.
xxii Service Manual
7001–001
1. General information
The Lexmark™ X422 multifunction product (MFP), with 128MB of
memory standard, a USB port, an integrated Ethernet adapter, and
33.6K baud fax/modem.
This chapter provides an overview of the capabilities of the MFP and
available options for each model.
Maintenance approach
The diagnostic information in this manual leads you to the correct
field replaceable unit (FRU) or part. Use the error code charts,
symptom index, and service checks to determine the symptom and
repair the failure. See “Diagnostic information” on page 2-1 for
more information. See “Repair information” on page 4-1 to help
identify parts. After completing the repair, perform tests as needed to
verify the repair.
General information 1-1
7001–001
MFP identification
Options
See “Options” on page 7-22 for a list of options available for the
MFP.
1-2 Service Manual
MFP features
Connectivity
Attachments
Standard USB interface✓
Standard Ethernet 10/100 Base–TX✓
Fax modem✓
Note:
✓ Indicates attachment is part of the model factory shipped
Each model has a standard amount of memory (RAM) soldered on the system
card, and a certain number of 100-pin DIMM slots available for installing
additional memory or user flash memory options.
Memory
Standard memory128MB
Standard flash memoryNone
Memory options
• 8MB DIMM
• 16MB DIMM
• 32MB DIMM
• 64MB DIMM
• 128MB DIMM
Maximum # of memory DIMM2
Maximum possible memory384MB
Flash memory options
• 16MB User flash daughter card
• 32MB User flash daughter card
Maximum # of flash daughter cards1
Maximum possible flash memory32MB
Note: ✓ Indicates option is supported.
✓
✓
✓
✓
✓
✓
1-4 Service Manual
7001–001
Operator panel
The operator panel consists of a 240 X 64 dot matrix APA LCD and
27 buttons. Four can be illuminated (copy, fax, e-mail and print/
profiles). The display can display eight lines of text with 40
characters each.
Print area
The following print area settings are available.
Print area option
Normal✓
Edge to edge✓
General information 1-5
7001–001
Print media
The following table shows the supported media, media weights and
media textures which together provide optimal print quality across a
variety of media.
Transmission rateApproximately 3 seconds per page
Modem33.6 kpbs
CompressionMH, MR, MMR, Super G3
Resolution• 200 x 100 dpi
Speed dial300 (based on 10–digit phone numbers)
Group faxSupported by speed dial (shortcuts)
Broadcast46 locations (based on 10 digit numbers
Manual faxYes
Fax from PCSupported using PS driver for both local
• 400 x 400 dpi
with a maximum of 512 characters
and network attach modes
Serial number
The serial number label is on the inside front cover of the MFP.
Special tools
Long Phillips screwdriver (approximately 6–inch shank)
Slotted screwdriver
Small Phillips screwdriver
When taking voltage readings, alwa ys use the MFP frame as g round
unless another ground is specified.
1-14 Service Manual
Acronyms
ADFAutomatic Document Feed
AFEAnalog Front End
ASICApplication Specific Integrated Circuit
CCharge Roll
CCDCharge Couple Device
CCWCounterclockwise
CWClockwise
DCDirect Current
DEVDeveloper Roll
DIMMDual Inline Memory Module
DNSFBPDanish, Norwegian, Sw edish, Finnish, Brazilian
Portuguese
DPIDots Per Inch
DRAMDynamic Random Access Memory
EOLSEnd Of Line Sensing
FFCFlexible Flat Cable
FIGSDFrench, Italian, German, Spanish, Dutch
FRUField Replaceable Unit
GNDGround
HVPSHigh Voltage Power Supply
IDEIntegrated Development Environment
IETImage Enhancement Technology
INAInternal Network Adapter
IQImage Quality
KBKilobyte
KBPSKilobits Per Second (usually as Kbps) /
Kilobytes Per Second (usually as KBps)
LCDLiquid Crystal Display
LEDLight–Emitting Diode
LSULaser Scanning Unit
LVPSLow Voltage Power Supply
MFPMultifunction Product
MHMessage Handling
MHzMegahertz
MMRModified Modified Read
MPFMultipurpose Feeder
MR(Modem) Modem Ready
NANDNot And (Gate)
NVRAMNonvolatile Random Access Memory
OPUOperator panel Unit
7001–001
General information 1-15
7001–001
PCBPrinted Circuit Board
PCL 6Printer Command Language
PJLPrinter Job Language
PORPower–On Reset
POSTPower–On Self Test
PPDSPersonal Printer Data Stream
PSPostScript
PWBPrinted Wiring Board
RIPRaster Image Processor
ROMRead Only Memory
RSRecommended Standard
SCUScanner Control Unit
SESystems Engineer
TTransfer (Roll)
TARToner Adder Roll
USBUniversal Serial Bus
VacVolts Alternating Current
1-16 Service Manual
2. Diagnostic information
Start
Unplug power from the MFP before connecting or
disconnecting any cable, assembly, or electronic card.
This is a precaution for personal safety and to prevent
damage to the printer.
This chapter contains the codes and diagnostic tools to aid in
providing corrective action for a malfunctioning MFP.
The status of the machine is displayed on the LCD.
7001–001
Diagnostic information 2-1
7001–001
Attendance and status messages
Error
code
31Missing or defective print cartridge, replace cartridge
32Unsupported print cartridge, replace cartridge
34Short paper
35Insufficient memory to support Resource Save feature
37Insufficient memory to collate job
Attendance message description
Change cartridge invalid refill
Change <source> <new media>
Close door or insert cartridge
Insert Tray 1
Invalid UAA
Load <source> <new media>
Load manual <new media>
Remove standard paper bin
Insufficient memory for Flash Memory Defragment operation
Insufficient memory, some Held Jobs may be lost
38Memory full
39Complex page, some data may not have printed
50PPDS font error
51Defective flash detected
52Not enough free space in flash memory for resources
53Unformatted flash detected
54Standard Network Software error
2-2 Service Manual
7001–001
Error
code
55Unsupported Flash in slot <x>
56Standard USB Port Disabled
88Toner low
Error
code
200Paper jam, remove print cartridge to access (MFP input
201Paper jam, remove print cartridge to access (between MFP
input and exit sensor)
202Paper jam, open rear door to access
230Paper jam, check duplex
250Paper jam, check MP feeder
290Scanner jam, remove all originals from scanner
Replace originals if restarting job
Diagnostic information 2-3
7001–001
Operator panel overview
The X422 operator panel consists of a 240X64 dot matrix APA LCD
and 27 buttons can be illuminated (copy, fax, e-mail and print/
profiles). The display is capable of displaying approximately eight
lines of text with 40 characters each.
The operator panel may be used for:
• Determining MFP status.
• Reviewing MFP settings (See “Configuration Menu Settings”
on page 3-4 for more information.)
• Changing MFP settings (See “Configuration Menu Settings”
on page 3-4 for more information.)
• Utilizing diagnostic tools (See “Diagnostic mode menu
settings” on page 3-6 for more information.)
• Obtaining information about MFP service errors (See “Service
error codes” on page 2-13 for more information.)
2-4 Service Manual
7001–001
Power–on self test (POST)
When you turn the MFP on, it performs a Power–On Self Test. With
all the cables connected, the MFP completes POST between 15–20
seconds in the following sequence:
1. The four blue LEDs light and immediately revert to three
illuminated LEDs.
The display shows a series of dots across the screen. The MFP
is performing the memory test.
2. Then, two LEDs are illuminated and the display shows the
amount of installed memory and processor speed (for example,
128MB 300).
3. Next, one LED is illuminated for a moment.
The display message is ‘Performing Self Test’, the ADF is
tested, the scanner calibrates, and the drive motor and the
printhead motors run.
Note:
• If non-critical sections of NVRAM, or factory defaults ARE
being restored from the configuration menu, the display
message is ‘RESTORING FACTORY DEFAULTS’ for a
minimum of three seconds.
• If the firmware has detected a version change,
‘PERFORMING SELT TEST’ is displayed for a minimum of
three seconds.
• If all NVRAM settings are being reset, ‘RESETTING ALL OF
NVRAM’ is displayed for a minimum of three seconds.
Diagnostic information 2-5
7001–001
4. The MFP cycles down, and the home screen is displayed.
Note:
• If errors are detected, an attendance message is displayed.
• If the CCD is locked, a message is posted instructing the
user to unlock the CCD.
• If toner is low, a message is displayed.
• Cartridge errors are posted if the cartridge is defective or
invalid.
• If a cover is open, a message is displayed.
If POST gets to step 2 and hangs for more than 60 seconds, remov e
any optional RAM from the RIP card. Restart the machine. If the
problem persists, replace the RIP card.
If POST begins, but the ADF, scanner calibration, and motor test
don’t start, check connections on the RIP card. Replace the RIP
card as necessary.
Symptom tables
Check for correct POST functions of the MFP by observing the
following symptoms:
See “Power–on self test (POST)” on page 2-5 for more
information.
2-6 Service Manual
POST symptom table
SymptomAction
7001–001
The main motor, cooling fan and
fuser do not come on.
POST completes except one or
more lights do not come on.
None of the lights come on.See the “Operator panel service
Main motor does not come on.See the “Main motor service
Fan does not come on.See the “Cooling fan service
Fuser lamp does not come on.See the “Cold fuser service
Fuser lamp never turns off.See the “Hot fuser service check”
The paper feed picks and tries to
feed paper.
LEDs on operator panel, and
display fail to illuminate. Fan runs
continuously.
Scanner locked power off and
Restart message appears when
scanner is unlocked.
See the “Cover interlock switch
service check” on page 2-21.
See the “Operator panel service
check” on page 2-32.
check” on page 2-32.
check” on page 2-30.
check” on page 2-20.
check” on page 2-26.
on page 2-28.
See the “Paper feed service
checks” on page 2-33.
See the “Operator panel service
check” on page 2-32.
See the “Scanner/copier service
check” on page 2-47.
ADF pick roller , or motor does not
run during start up.
operator panel lights function
properly at POST, but the display
is blank.
Machine POSTS and enters
operations mode but one or more
buttons are not functioning.
See the “ADF service check” on
page 2-19.
See the “Operator panel service
check” on page 2-32.
See the “Operator panel service
check” on page 2-32.
Diagnostic information 2-7
7001–001
MFP symptom table
SymptomAction
Dead machine (no power)See the “Dead machine service
Fan noisy or not workingSee the “Cooling fan service
Fuser parts meltedSee the “Hot fuser service check”
Fuser lamp doesn’t lightSee the “Cold fuser service
Toner not fused to the paperSee the “Poor fusing of image” on
Blank pageSee the “Blank Page” on
Black pageSee the “Black page” on
Heavy backgroundSee the “Heavy background” on
Light printSee the “Light print” on page 2-44.
White or black lines or bandsSee the “White or black lines or
Toner on back of pageSee the “Toner on back of page”
check” on page 2-22.
check” on page 2-20.
on page 2-28.
check” on page 2-26.
page 2-44.
page 2-39.
page 2-41.
page 2-42.
bands” on page 2-45.
on page 2-45.
Paper jamsSee the “Paper feed service
checks” on page 2-33.
Main motor noisy or does not
move
Paper never picksSee the “Paper never picks” on
Paper feeds continuouslySee the “P aper pic ks during POST
See the “Main motor service
check” on page 2-30.
page 2-37.
and/or continuously” on
page 2-35.
2-8 Service Manual
SymptomAction
7001–001
Paper skewSee the Note regarding alignment
MFP not communicating with hostSee “Network printing service
Paper wrinkled or bentSee “Paper “trees,” wrinkles,
Top cover will not closeSee “Cover interlock switch
Operator panel button does not
respond
MFP not communicating with host
over network
on page 4-57 or “Paper feed
service checks” on page 2-33.
check” on page 2-31.
stacks poorly or curls” on
page 2-38.
service check” on page 2-21.
See “Operator panel service
check” on page 2-32 or “RIP card
service check” on page 2-46.
See “Network printing service
check” on page 2-31.
Diagnostic information 2-9
7001–001
Scanner / copier symptom table
SymptomAction
Machine boots, but LCD posts a
“Scanner Locked Power off and
Restart” attendance message.
Documents don’t feed into ADF.
Scanner jam (290) error.
Paper feeds into ADF, but jams in
the ADF. Error 290 generated.
ADF runs paper through, but no
copy is made. Error 290
generated.
Scanner does not respond to
scan command from attached
computer.
1. Check whether scanner CCD is
locked.
2. Perform scanner service check.
See “Scanner/copier service
check” on page 2-47 for more
information.
1. Check for dirty sensors.
2. Check the paper present sensor
(using the scanner sensor test in
diagnostics). Replace as
necessary.
3. Check continuity of scanner –
ADF motor cable.
– If good, replace ADF motor.
– If bad, replace ADF motor
cable.
Perform ADF service check. See
“ADF service check” on page 2-19
for more information.
Perform ADF service check. See
“ADF service check” on page 2-19
for more information.
Perform USB service check. See
“USB service check” on page 2-48
for more information.
2-10 Service Manual
SymptomAction
7001–001
RIP software error on startup.1. Check the connections on all
Scanner repeatedly gives the user
a “Scan Locked Power off and
Restart” message when the
scanner is actually unlocked.
Scanner repeatedly reports 290
error.
cables to the RIP card to the SCU
card.
2. Check for loose connectors, bent
or broken pins on the connectors.
Ensure the individual wires are
secure in the connector.
3. Check connector J32 on RIP card.
• Pin 1 should be +5 V
• Pin 4 should be +24 V
• Pins 2 and 3 are ground
If they pass, check continuity on the
power cable connecting the RIP card
to the SCU.
If they fail, replace the RIP card.
If the cable checks out, replace the
SCU.
If it fails, replace the cable.
See “Scanner/copier service
check” on page 2-47 for more
information.
See “Scanner/copier service
check” on page 2-47 for more
information.
E-mail symptoms
SymptomAction
Scanner runs, mail confirmation
failure.
Weblink fails.1. Check that the FTP server is on
Perform E-mail service check. See
“E-mail service check” on
page 2-23 for more information.
the network.
2. Check the FTP server IP address.
Diagnostic information 2-11
7001–001
Fax symptoms
SymptomAction
No dial tone.1. Check that phone line is
Machine dials a number but fails
to make a connection with
another fax machine.
Incoming fax has blank spaces or
poor quality.
Some words on an incoming fax
are stretched.
Documents are not stored in
memory.
connected properly.
2. Check that the phone socket is
working properly. (Test the socket
with a phone.)
The other fax machine may be
turned off. Ask the fax recipient to
check their machine.
1. The sending fax machine may be
faulty.
2. The sending fax machine may
have a dirty document glass.
3. A noisy phone line can cause
errors.
4. Check the MFP print quality by
making a copy.
5. The print cartridge may be empty.
Replace as necessary.
The sending fax machine had a
temporary jam.
• There may not be enough
memory to store the document.
• The machine may display an
‘Insufficient Memory’ message.
• Wait for current jobs to process.
• Delete any print and hold jobs that
are not needed.
• Install more memory.
Document does not feed.1. Make sure the document is not
wrinkled and that it has been
inserted correctly.
2. Check that the document is the
correct size.
2-12 Service Manual
7001–001
Service error codes
Service error codes are generally non–recoverable except in an
intermittent condition when a POR of the MFP temporarily recovers
from the error condition.
Error codeDescriptionAction
900 – RIP software
error
902 – Engine software
error
920 – Fuser errorFuser below
921 – Fuser errorFuser below standby
922 – Fuser error Fuser failed to reach
923 – Fuser errorFuser too hot during
924 – Fuser errorOpen circuit in
925 – Fuser errorIncorrect fuser lamp
929 – Toner sensorIndicates a problem
Internal RIP software
error on the system
card.
General internal engine
software error on the
system card.
temperature when
printing.
temperature in idle.
standby temperature.
printing or in idle.
thermistor path.
installed.
with either the toner
sensor or print
cartridge.
Replace the system
card.
Replace the system
card.
Perform cold fuser
service check to isolate
the problem to:
- Fuser lamp
- Lamp cable
- Complete fuser
(thermistor)
LVPS
Perform hot fuser
service check to isolate
the problem to:
- Fuser lamp
- Complete fuser
(thermistor)
Test the toner sensor
using the "Base Sensor
Test" in the diagnostic
menu.
• If the test fails,
replace the sensor.
• If the test passes,
replace the
cartridge.
Diagnostic information 2-13
7001–001
Error codeDescriptionAction
931 – Printhead errorNo first Hsync.Inspect the printhead
932 – Printhead errorLost Hsync.Inspect the printhead
935 – Printhead errorMirror motor unable to
reach operating speed.
cable for continuity /
connection.
If the inspection
passes, replace the
printhead.
cable for continuity /
connection.
If the inspection
passes, replace the
printhead.
Perform voltage check
on printhead connector
of the RIP card.
If the voltages are
incorrect, replace the
card.
Inspect the printhead
cable for continuity /
connection.
If the inspection
passes, replace the
printhead.
936 – Transport motorTransport motor initial
937 – Transport motorTransport motor lost
939 – RIP - engine
communications
940 – LVPS (Low
Voltage Power Supply)
lock failure.
lock.
RIP processor cannot
communicate with
engine processor on
RIP card.
There is a failure with
the zero crossing signal
on the line controlling
the fuser lamp.
2-14 Service Manual
Inspect motor, cabling
and main drive
assembly.
Replace defective
parts.
Replace RIP card
assembly.
Ensure the proper
LVPS is installed.
Error codeDescriptionAction
7001–001
941 – Image pipelineAn error was detected
with the image pipeline
ASIC on the RIP card.
942 – Scanner failureCommunication failure.
RIP card cannot
establish
communications with
the scanner card.
943 – Scanner failureCarriage mechanical
failure.
944 – Scanner failureLamp failure.
One or both of the
lamps failed, or the
CCD cable has failed.
945 – Scanner failureCCD failure.
Observe debug data of
engine microcode.
Replace RIP card
assembly, if necessary.
Inspect the RIP–SCU
cable for proper
connection and
conductivity.
If the inspection
passes, replace the
SCU card.
Check the mechanical
movement of the CCD
carriage.
Replace the defective
component.
Check the CCD cable
for proper connection
and connectivity.
If inspection passes,
replace the CCD
carriage.
The CCD circuit on the
CCD carriage has
failed or the CCD cable
has a problem.
946 – Scanner failureCCD calibration error.Perform the scanner
calibration process.
Check the CCD cable
for proper connection
and connectivity.
If inspection passes,
replace the CCD
carriage.
Diagnostic information 2-15
7001–001
Error codeDescriptionAction
947 – Modem failureModem card, on the
RIP card, experienced
a failure.
948 – Fax storageFlash partition too
small on modem card.
949 – Fax storageFlash partition inv alid
or not available.
952 – NV failure: nNVRAM CRC error
detected. "n" indicates
where the error
occurred.
953 – NVRAM failureNVRAM chip failure.Replace the operator
954 – NVRAM failureNVRAM CRC failure.
955 – Code CRCCode ROM and NAND
failed the CRC check,
or NAND experienced
an uncorrectable multibit failure.
Replace RIP card
assembly.
Reformat from the
configuration menu.
If the problem persists,
replace the RIP card
assembly.
POR the machine to
clear the error.
If the problem persists,
replace the operator
panel.
panel.
Replace the RIP card.
956 – System boardProcessor failure.Replace the RIP card.
957 – System boardASIC failure.Replace the RIP card.
958 – NAND failureIndicates the system
has performed more
than 100 shift and
re-flash operations as a
result of ECC bit
corrections.
959 – System boardSRAM failure.Replace the RIP card.
960 – Memory errorRAM soldered on RIP
card has failed.
961 – Memory errorRAM in slot 1 is
defective.
Replace the RIP card.
Replace the RIP card.
Replace the DIMM in
slot 1.
2-16 Service Manual
Error codeDescriptionAction
7001–001
962 – Memory errorRAM in slot 2 is
965 – Panel failureThe engine is
976 – Standard
network
defective.
experiencing failures
sending commands to
the operator panel.
Unrecoverable softw are
error in the network
port.
Replace the DIMM in
slot 2.
Inspect the operator
panel RIP cable for
connectivity and
continuity.
If the cable passes,
replace the operator
panel.
If the cable fails,
replace the RIP card.
Replace the RIP card.
Diagnostic information 2-17
7001–001
Service checks
Service checks involve measuring voltages of the LVPS,
HVPS, SCU, and RIP card assemblies. Continuity and
resistance verifications are done on cables and
components as required.
Note: When looking at the printed side of a PCB, connectors are
designated with “J” followed by a number. On the SCU card, the
connectors are designated with a CN followed by a number. Pin 1 is
designated on the PCB by an adjacent “1” or triangle. Pin numbers
index sequentially to the opposite end of the connector. See “RIP
card assembly” on page 5-10 for more information.
2-18 Service Manual
ADF service check
FRUAction
7001–001
ADF assembly
SCU card
1. Open the ADF cover and check for
obstructions in the paper path.
2. Check the sensors to ensure the
flags move freely or dust is not
blocking the sensors.
If the ADF makes a copy and
generates a 290 error after the last
sheet is fed through the ADF, and
the error only goes away after a
POR, replace the ADF.
• If the problem persists, replace
the SCU.
If the ADF starts feeding, but prints a
blank page generating a 290 error,
the paper may or may not feed all
the way through the ADF.
• POR the machine into diagnostics
mode and perform a scanner
sensor test on the paper present
sensor and the ADF cover sensor .
• If the ADF cover sensor remains
in the CL setting when actuated
and the paper position sensor
remains in the OP setting when
actuated, replace the SCU card.
• If the ADF cover sensor changes
to the OP setting when actuated,
replace the ADF.
Paper in the ADF does not feed,
a blank page is run from the printer.
Paper in the ADF does not feed,
a 290 error is generated.
Check CN5, pins 1 and 2 for +24V.
• If +24V, replace the ADF motor
assembly.
• If not +24V, replace the SCU.
ADF pick roller, and ADF motor not
running during POST.
Check CN5, pins 1 and 2 for +24V.
• If +24V, replace the ADF motor
assembly.
• If not +24V, replace the SCU.
Diagnostic information 2-19
7001–001
Cooling fan service check
FRUAction
Cooling fanMake sure the cooling fan motor
cable plug is properly seated.
Turn the MFP off and disconnect the
cooling fan cable at the cooling fan.
Turn the MFP on. Within
approximately 15 seconds the RIP
card assembly should apply +24V dc
to the fan. See “RIP card
assembly” on page 5-10 for more
information.
• If voltage is present, replace the
cooling fan.
• If voltage is not present,
disconnect the cable from the RIP
card (J30) and check for continuity
and shorts (connector sockets 1
and 2).
– If the cable is good, see the
“RIP card service check” on
page 2-46 for more
information.
– If the cable is damaged,
replace the cable.
2-20 Service Manual
7001–001
Cover interlock switch service check
Note: Make sure a print cartridge is installed and the cover closes
all the way, engaging the cover open switch lever.
FRUAction
Cover interlock switchDisconnect the cover interlock cable
from the interlock switch.
Push the cover interlock switch to
the closed position and verify
continuity between the bottom and
middle terminals.
Open the switch and verify continuity
between the bottom and top
terminals. The top and middle
terminals indicate discontinuity at all
times.
• If the switch is good, verify
+5 V dc on the middle spade of
the cable and ground on the top
spade of the cable.
• If voltage is not present, see “RIP
card service check” on
page 2-46.
Replace the switch if faulty.
Diagnostic information 2-21
7001–001
Dead machine service check
Perform this service check when there is no activity at power up.
FRUAction
LVPS
RIP card
Main wiring harness
Ensure the MFP is plugged in.
Note: Check the AC line voltage.
Voltage should be within the
following limits:
– 100 V ac - 127 Vac for the
nominal - 110 V model printer
– 200 V ac - 240 Vac for the
nominal- 220 V model printer
• If the line voltage checks out,
perform the LVPS service check.
See “Low volta ge power suppl y
(LVPS) service check” on
page 2-24 for more information.
• If the line voltage fails , replace the
LVPS.
If the LVPS passes, check the
continuity of the cable from CN2 on
the LVPS.
• If the cable checks out, replace
the RIP card.
• If the cable fails, replace the main
harness assembly.
Note: Before replacing the RIP card,
inspect the wiring around and behind
the RIP cage for signs of damaged
insulation. A short can cause the
device to not start.
2-22 Service Manual
E-mail service check
FRUAction
Have customer verify the e-mail
settings using the MFP’s b uilt in Web
server.
Check X422 User’s Reference for
setting instructions.
Note: Failure to connect to the Web
server may indicate a problem with
either the network or the NIC on the
MFP.
If the e-mail settings check out,
perform the network printing service
check. See “Network printing
service check” on page 2-31 for
more information.
7001–001
Diagnostic information 2-23
7001–001
Low voltage power supply (LVPS) service check
FRUAction
Low voltage power supply card
(LVPS) (110 V and 220 V)
Unplug the power cord and verify
that the cable is correct and
functioning. Replace if necessary.
With the power cord unplugged,
disconnect the 12–pin and 4–pin
connectors from the LVPS.
• On the 12–pin connector (pin 1 is
closest to the HVPS), verify pins
1, 2, 7, 8, and 9 are ground.
Re–plug the power cord and turn the
MFP on.
CAUTION: Be careful to not
ground pins to cage while
testing.
• Verify pins 5 and 6 are +5 V dc.
• Verify pins 10, 11 and 12 are
+24 V dc.
• V erify pin 1 of the 4–pin connector
(also closest to the HVPS) is
+5 V dc.
If any one of these are incorrect,
replace the LVPS.
2-24 Service Manual
7001–001
Fuser service check
When toner is partially fused to the paper, it is usually caused by low
fuser temperature.
Warning: 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 skin contains acids that can weaken the glass.
The line voltage to the MFP must be within the following limits:
• 100 V ac–127 V ac for the nominal–110 V model MFP
• 200 V ac–240 V ac for the nominal–220 V model MFP
Diagnostic information 2-25
7001–001
Cold fuser service check
FRUAction
Fuser lamp
Lamp cable
LVPS
Note: Ensure the proper lamp is
installed.
Unplug the MFP and disconnect the
fuser lamp cable from the LVPS card
connector (CN3). See “Low voltage
power supply (LVPS)” on page 5-9
for more information.
Check for continuity across the fuser
lamp. (Pins 1 and 2)
If there is continuity, go to step 1. If
there is no continuity, go to step 2.
Step 1: Continuity
Reconnect the fuser lamp cable at
CN3.
Re–plug and turn the MFP on.
Measure the voltage at connector CN4
on the LVPS. It should match the line
voltage.
• If line voltage is not present, replace
the LVPS.
Make sure the fuser thermistor is
correctly connected to the RIP card
(J29). If the problem persists,
disconnect the thermistor cable from
the RIP card assembly and check for
+4 V to +5 V dc. See “Locations” on
page 5-1 for more information.
• If the voltage is incorrect, see “RIP
card service check” on page 2-46.
2-26 Service Manual
Step 2: No Continuity
Unplug the MFP and check the lamp
cable for continuity.
• If correct, replace the lamp.
• If incorrect, replace the lamp cable.
7001–001
Make sure the correct voltage lamp is installed. The voltage rating is
stamped on one of the lamp contacts.
FRUAction
Fuser assemblyIf the fuser lamp comes on and a
fuser failure error code displays, be
sure the thermistor is contacting the
hot roll and the thermistor cable is
firmly seated in connector J29 on the
RIP card assembly. (The thermistor
cable goes through the frame by wa y
of a connector.)
Check for e xcessive toner b uildup on
the surface of the thermistor. Clean
as necessary.
Unplug the MFP and disconnect the
thermistor cable from the RIP card
(J29).
Measure the resistance of the
thermistor. The resistance measures
approximately 245K ohms when cool
(approximately 40°C) and
2K–3K ohms hot.
Replace the fuser assembly as
necessary.
Diagnostic information 2-27
7001–001
Hot fuser service check
Make sure the correct voltage lamp is installed. The voltage rating is
stamped on one of the lamp contacts.
FRUAction
Lamp
Fuser assembly
Unplug the MFP and make sure the
termister is properly connected in
J29 on the RIP card. Measure the
resistance of the thermistor.
The resistance measures
approximately 245K ohms when cool
(approximately 40°C) and
2K–3K ohms hot.
Replace the fuser assembly as
necessary.
2-28 Service Manual
7001–001
Continuity check on HVPS/cartridge
Continuity between the HVPS and the charge roll, Dr . B (blade), TAR
(toner adder roll), the developer roll, and the photoconductor (DC)
can be checked as follows:
FRUAction
HVPS
Left guide assembly
Cartridge contacts
1.Turn MFP off.
2.Remove the right side cover.
See “Right side cover
removal” on page 4-13 for
more information.
3. Remove the print cartridge.
4.Check from C on the HVPS to
the bearing on the left side of
the charge roll. See “High
voltage power supply
(HVPS)” on page 5-8 for more
information.
5.Check from the Dr. B, TAR,
DEV, T, and DC
(photoconductor) respectively
to the corresponding pin on
the right side frame where the
print cartridge makes its
contacts.
• If any show discontinuity,
remove the HVPS and check
the cartridge contact
assemblies (springs) for
continuity and damage.
• If the charge roll and the cable
at C show discontinuity,
replace the left guide
assembly. See “High voltage
power supply (HVPS)” on
page 5-8 for testing the PCB.
Diagnostic information 2-29
7001–001
Main motor service check
FRUAction
Main motor
Main motor cable
Verify +24 V dc on pin 7 at J14 on
the RIP card assembly.
• If the voltage is correct, check the
main motor cable for continuity.
• If the voltages are not correct, see
“Low voltage power supply
(LVPS) service check” on
page 2-24 or replace the RIP card
assembly.
Note: Always check printhead
alignment after replacing the RIP
card assembly. See “Printhead
alignment adjustment” on
page 4-2 for hardware alignment
of the printhead.
If continuity exists on each wire,
replace the main motor.
If continuity does not exist on one or
more of the wires, replace the motor
cable.
2-30 Service Manual
Network printing service check
FRUAction
7001–001
RIP card1. Check the lights on the MFP NIC.
• If the lights work, ping the IP
address of the MFP.
Note: The IP address is in the
TCP/IP menu nested in the
Network/USB menu in the
Administrator menu.
• If the lights to the NIC are not
lighting up, test the MFP with a
network cable that is known to
work.
• If the lights do not illuminate with a
known good cable, replace the
RIP card.
• If the IP address of the MFP is
169.254.xxx.xxx and the
customers network uses DHCP to
assign IP addresses, have the
network administrator manually
assign an address to the MFP.
Ping the manually assigned
address.
• If this fails, call tech support to see
if there is a firmware update to
address this issue. If the firmware
does not resolve the issue,
replace the RIP card.
Diagnostic information 2-31
7001–001
Operator panel service check
Inspect the operator panel cable f or damage. Mak e sure the cab le is
plugged in securely.
Run POST and check each light for proper operation.
FRUAction
Operator panel
OPU - RIP cable
RIP card
1. Check J6 on the RIP card
assembly.
Verify +5V on pins 1, 2, 15, 23,
and 24.
•If any pin does not have +5V,
replace the RIP card.
2. Check the OPU-RIP cable for
continuity. Replace as necessary.
3. If the RIP card and operator panel
cable check out, replace the
operator panel.
4. Perform operator panel test in
diagnostics mode. Replace
operator panel as necessary.
2-32 Service Manual
Paper feed service checks
Paper picks and advances approximately 4 inches
FRUAction
7001–001
Plate assembly (reference edge)
Paper feed gear
Drive assembly
Turn MFP off and remove the print
cartridge and left side cover.
With a left finger, rotate the main
motor counterclockwise while using
a right finger to resist gear
movement in the plate assembly
(reference edge) in the paper path
below the cartridge.
If the gear motion can be stopped
while continuing to rotate the drive
motor, one of the units has to be
replaced. The paper feed gear is
most likely the failing part.
Remove the drive assembly for
further inspection. Replace the faulty
unit.
When the plate assembly is
replaced, it has to be adjusted. See
“Paper feed adjustment” on
page 4-2 for more information.
Diagnostic information 2-33
7001–001
Paper jam error indication during POST
FRUAction
Stack control flags
Photo sensor
Photo sensors (paper path)Make sure the input paperfeed
If the exit sensor flag is not resting
within the paper exit sensor during
POST, the MFP indicates Remove paper from standard output bin.
Perf orm a base sensor test to ensure
the exit sensor is operating correctly.
Make sure the flag is operating
freely.
Replace the photo sensor and/or the
stack control flag as necessary.
sensor is working properly. A stuck
or incorrectly installed sensor
causes this error.
• 200 Paper Jam. Remov e print
cartridge to check for paper,
damaged flags, or malfunctioning
sensors.
• 201 Paper Jam. Remov e print
cartridge to access and check
under and/or inside the rear door
for jammed paper.
• 202 Paper Jam. Open rear door
and check for a damaged flag,
malfunctioning sensor at the fuser
exit, or a paper jam inside the rear
door.
• 250 Check MP Feeder . Chec k f or
paper jam in the MPF or a
malfunctioning MPF sensor.
• 230 Paper Jam. Check the
sensor in the duplex path for a jam
or a malfunction.
2-34 Service Manual
Paper picks during POST and/or continuously
FRUAction
7001–001
Paper feed assembly
Paper feed solenoid
Check the pick roller clutch f or wear.
The solenoid interacts with the
clutch controlling motion of the pick
roller.
If the cam surface of the pick roller
clutch assembly is worn, the
solenoid may not stop the D–roll
(pick roll) from rotating. Replace the
paper feed assembly if necessary.
Make sure the spring on the solenoid
is properly installed. If the spring is
improperly installed or missing, the
pick roller will continuously pick
paper.
Replace the solenoid.
Diagnostic information 2-35
7001–001
Paper picks but stops half way through the MFP
FRUAction
Input paper feed sensor
RIP card assembly
Perform base sensor test to ensure
the input paper feed sensor is
working properly.
Check for a broken or stuck flag on
the input paper feed sensor.
Make sure the cable is seated on the
RIP card assembly (J31).
Verify +5 V dc on pins 1, 4, 7, and
ground on pins 3, 6, and 9. See
“Locations” on page 5-1 for more
information.
• If correct, replace the input paper
feed sensor.
• If the voltage is not correct,
replace the RIP card assembly.
Note: Always check printhead
alignment after replacing the RIP
card assembly. See “Printhead
alignment adjustment” on
page 4-2 for hardware alignment
of the printhead.
2-36 Service Manual
7001–001
Paper never picks
FRUAction
Paper tray Make sure the paper tray and paper
are correctly positioned.
Check the input tray for missing or
broken parts.
Replace the tray as necessary.
Paper feed solenoid
RIP card assembly
Make sure solenoid is installed
correctly and its cable is plugged into
the RIP card assembly. See
“Locations” on page 5-1 for more
information.
• Verify approximately 40 ohms in
the solenoid. If not correct,
replace the solenoid.
• Verify the solenoid has the spring
in place and functions
mechanically . If this is true and the
resistance is correct, replace the
RIP card assembly.
Note: Always check printhead
alignment after replacing the RIP
card assembly. See “Printhead
alignment adjustment” on
page 4-2 for hardware alignment
of the printhead.
Diagnostic information 2-37
7001–001
Paper occasionally picks or picks multiple sheets at once
FRUAction
Paper feed roll
D–roll at Tray 1 spring
Paper feed assembly
Check the paper feed roll (D–roll/pick
roll) for wear . Replace as necessary.
Verify that the extension spring is
working properly. If not, replace the
spring.
If the paper feed roll shaft rotates
freely, replace the paper feed
assembly.
Note: We recommend that the paper
feed roll be replaced when the paper
feed assembly is replaced.
Paper “trees,” wrinkles, stacks poorly or curls
FRUAction
Fuser assemblyThis problem is most likely due to a
worn backup roller. A worn backup
roller causes the MFP to run hotter
than required for the media being
printed. Excessive heat can cause
paper treeing problems, poor
stacking, or curl.
2-38 Service Manual
Print quality service checks
Blank Page
FRUAction
Print cartridge Remove the print cartridge and
gently shake the assembly to evenly
distribute the toner.
Ensure clean electrical contacts on
the right side.
Blank pages can be caused by a
defective printhead assembly, high
voltage power supply, or RIP card
assembly. See “RIP card service
check” on page 2-46 and verify the
required voltages and proper ground
at connectors J1 and J3.
With the cartridge removed and the
MFP off, check continuity between
HVPS (DC designation on outside of
card) and the PC pin inside the
printer. The PC pin is directly above
the transfer roll gear.
Check the contacts for correct
installation and contamination where
contact is made with the print
cartridge and HVPS card. Clean as
necessary.
If this does not correct the problem,
replace the following FRUs one at a
time in the order shown:
• HVPS card
• RIP card assembly
Note: Always check printhead
alignment after replacing the RIP
card assembly. See “Printhead
alignment adjustment” on
page 4-2 for hardware alignment
of the printhead.
2-42 Service Manual
Partial blank image/white spots (no periodic pattern)
FRUAction
Print cartridge (not a FRU)Remove the print cartridge and
gently shake the assembly to evenly
distribute the toner.
If the print cartridge is lo w, try a new
one.
7001–001
Fuser backup roll springs
(not a FRU)
Fuser assembly
PaperMake sure recommended paper is
Check springs at each end of the
backup roller to ensure adequate
and even pressure is applied to the
fuser hot roll. Replace the fuser if
necessary.
being used.
Variation in image density horizontally across page
FRUAction
Print cartridgeThe charge roll may have an
unbalanced pressure against the PC
drum. Check for equal forces at both
ends of the charge roll.
Try a new print cartridge.
Transfer (roll)/bearings
Transfer assembly roll
Check the springs and bearings at
both ends of the transfer roller. The
bearing assemblies should support
the transfer roller, applying even
pressure to the PC drum.
Replace both bearing assemblies if
either spring shows signs of damage
or fatigue.
Inspect the transfer roller for signs of
wear or damage and replace as
necessary.
Diagnostic information 2-43
7001–001
Poor fusing of image
FRUAction
Fuser lamp The fuser may not be operating at
the proper temperature to fuse the
toner to the paper. See“Cold fuser
service check” on page 2-26.
Make sure recommended paper is
being used.
Light print
FRUAction
Print cartridge Make sure the print cartridge is
Transfer roller
HVPS contact (transfer roller)
HVPS card
installed correctly and is not low on
toner.
If the problem continues, install a
new print cartridge.
Check the transfer roller for signs of
toner buildup and contamination.
Inspect the HVPS contact (transfer
roller) for contamination.
Inspect the HVPS card for
contamination where it meets the
HVPS contacts.
2-44 Service Manual
If all components appear free of
contamination, replace the following
FRUs one at a time in the order
shown:
• Transfer roller
• HVPS contact (transfer roller)
• HVPS card
White or black lines or bands
FRUAction
7001–001
Print cartridge
Paper fe ed drive gears
Banding appears as light or dark
horizontal lines on a uniformly gray
page or on a page with a large area
of graphics. Banding is primarily due
to a variation in the speed of the
paper as it feeds through the MFP
especially in the developer and
transfer process. Inspect the print
cartridge and paper feed
components, especially the drive
gears, for signs of wear, debris,
binds, or damage.
Toner on back of page
FRUAction
Print cartridge Inspect the overall paper path for
Fuser assembly The fuser hot roll can cause toner on
signs of spilled toner.
Gently clean the contaminated areas
with a soft cloth or compressed air.
the back of the paper, if toner is
building up on the hot roll. This
buildup may transfer to the backup
roller, later transf erring to the back of
the paper.
Inspect the hot roll and backup roller
for signs of contamination and
replace fuser assembly as
necessary.
Transfer rollerA transfer roller contaminated with
toner can cause toner to transfer to
the back of printed pages.
Inspect the transfer roller for
contamination and replace as
necessary.
Diagnostic information 2-45
7001–001
RIP card service check
FRUAction
RIP card assemblyCheck for +24 V dc from the LVPS
card to the RIP card assembly.
• Turn the MFP off.
• Disconnect the LVPS cable from
the RIP card at J28.
• Turn the MFP on.
Verify +24 V dc from the cable,
pins 1, 2, and 10.
• If voltages are not present or
incorrect, see the “Low voltage
power supply (LVPS) service
check” on page 2-24 for more
information.
Note: Always check printhead
alignment after replacing the RIP
card assembly. See “Printhead
alignment adjustment” on
page 4-2 for hardware alignment
of the printhead.
Note: U.S. versus non–U.S. and
the MFP configuration ID can be
reset. See “Diagnostic mode
menu settings” on page 3-6 for
more information.
2-46 Service Manual
Scanner/copier service check
FRUAction
7001–001
CCD
FFC (CCD) cable assembly
SCU card assembly
1. Open the flatbed cover and restart
the MFP.
If the CCD illuminates but does
not move, check pins 2 and 5 on
CN6 on the SCU card for +24V.
• If it passes, replace the flatbed
motor.
• If it fails, replace the SCU.
If the CCD lamp fails to illuminate,
but the CCD moves, check the
FFC cable connector on the SCU.
Pins 16, 17, 21, and 22 should
measure +12V.
If it passes, check the cable
continuity.
– Continuity, replace the CCD .
– No continuity, replace the
cable.
If the lamp illuminates and the
CCD moves, perform the CCD
home sensor test. See
“Diagnostic mode menu
settings” on page 3-6 for more
information.
• If the test fails, replace the CCD.
Diagnostic information 2-47
7001–001
Transfer roll service check
FRUAction
Transfer assembly roll
Transfer Bearing
Check the springs in the left and
right transfer roll bearings. The
bearing assemblies should support
the transfer roll, applying even
pressure to the PC drum. The roll
should rotate evenly and smoothly.
Replace both the transfer roll
bearing assemblies if the springs or
bearings indicate damage or lack of
proper function.
Inspect the transfer roll for signs of
wear or damage and replace as
necessary.
USB service check
FRUAction
USB cable1. Try a different USB cable.
If changing the cable does not fix the
problem, proceed with step 2.
2. With the MFP attached to the
computer, run the USB view utility.
• If the USB view utility indicates
that the MFP is attached and
communicating with the PC
(bMaxPacketSize0>0), there may
be a problem with the PC.
• If the USB port is faulty, the utility
shows the bMaxPac ketSize0 at 0,
and the connection status variable
shows Device failed enumeration.
Replace the RIP card as
necessary.
2-48 Service Manual
7001–001
Solving print quality problems
Using print quality test pages
To help isolate print quality problems, like streaking, print test pages
using the print quality test pages setting:
1. Enter the special function menu. See “Entering the
diagnostics menu” on page 3-1 for more information.
2. Scroll to the print tests menu item and press Select.
3. Scroll to the print quality test, and press Select.
Three pages print to help you evaluate print quality. The first
page is the print quality test page, the second page is gray, and
the third page is black. Once the paper e xits into the output bin,
the MFP returns to the print quality test menu item. Exit
diagnostics to return to the Ready state.
4. Use the test pages to isolate problems such as print too light,
toner streaks, and so on. See the Troubleshooting tables in the
User’s Reference for solutions to these problems.
5. To return the MFP online, POR the printer.
ProblemAction
Light or blurred characters. The print cartridge may be getting
low on toner:
• Remove the print cartridge.
• Shake it from side to side to
redistribute the toner.
• Reinstall it.
• Make sure you are using
recommended print media (see
media types and sizes in the
User’s Reference.)
• Use MarkVision™ to define the
custom type setting for media
type, media texture, or media
weight.
• The print cartridge may be
defective. Replace it.
Diagnostic information 2-49
7001–001
ProblemAction
Toner smudges appear on the
front or back of the page.
Vertical or horizontal streaks
appear on the page.
Toner smears or rubs off the
page.
• Make sure the paper is straight
and unwrinkled.
• Check for loose toner in the
printer.
• Clean the printer.
• If the problem persists, replace
the cartridge.
• Replace the print cartridge.
• T ry a different kind of paper . P aper
designed for copiers gives the
best quality.
• If you are printing on special
media, such as, card stock or
labels, be sure you select the
correct paper type in the MFP
driver.
• Change the media texture setting.
You can download the latest driver
from the Lexmark Web site,
www.lexmark.com.
The print is getting light but the
display is not indicating toner low.
2-50 Service Manual
• Remove the print cartridge and
gently shake it from side to side to
redistribute the toner.
• Replace the print cartridge.
ProblemAction
7001–001
The display indicates Toner Low
attendance message.
Solid black areas on
transparencies or paper contains
white streaks.
Faint images or repetitive spots
appear on the page.
Pages are blank. • The print cartridge may be out of
• Remove the print cartridge and
gently shake it from side to side to
redistribute the toner.
• Replace the print cartridge.
• Choose a different fill pattern in
your software application.
• T ry a different type of paper . P aper
designed for copiers gives the
best quality.
• Remove the print cartridge and
gently shake it from side to side to
redistribute the toner.
• Replace the print cartridge.
• Select a different media type or
form type setting from your MFP
driver.
• T ry a different type of paper . P aper
designed for copiers gives the
best quality.
• Replace the print cartridge.
toner or defective. Replace the
cartridge.
• You may have a software error . Try
turning the MFP off and back on.
• Check the photoconductor circuit
for continuity.
• Check the printhead.
The operator panel lights do not
come on when the MFP is turned
on.
The top cover does not close.Make sure the print cartridge is
• The lights may take a f ew seconds
to come on.
• Make sure the power cord is firmly
plugged in at the back of the MFP
and at the electrical outlet.
positioned correctly.
Diagnostic information 2-51
7001–001
ProblemAction
The MFP is on, but nothing prints. • Make sure the print cartridge is
The media skews or buckles.• Don’t overfill tray 1 or the optional
installed properly.
• Make sure the network or USB
cable is firmly plugged into the
connector on the back of the
printer.
• POR the machine, enter
diagnostic mode and perform a
print test to determine whether the
problem is with the MFP or the
computer.
– If you can print a test
page, the problem is in
the computer or the
software application.
– If you cannot print a test
page, the problem is in
the printer.
If printing from the network, perform
the network printing service check.
tray 2 (see media capacities in the
media types and sizes table in the
User’s Reference).
• Make sure the paper guides are
flush against the edges of the
media.
The paper sticks together/MFP
feeds multiple sheets of paper.
The paper fails to feed from tray 1.• Remove the paper from tray 1 and
• Remove the paper from tray 1 or
the optional tray 2 and fan the
paper.
• Don’t overfill tray 1 or the optional
tray 2 (see media capacities in the
media types and sizes chart in the
User’s Reference).
fan the paper.
• Make sure tray 1 is selected from
the MFP driver.
• Do not overfill the tray.
2-52 Service Manual
ProblemAction
7001–001
The paper fails to feed from the
optional tray 2.
• Make sure the optional tray 2 is
selected from the MFP driver.
• Remove the paper from the
optional tray 2 and fan the paper.
• Make sure the tray is pushed all
the way in.
• Make sure the metal plate is
pressed down before inserting it
into the printer.
Note: Once the tray is inserted,
the metal plate springs up so the
paper can feed into the printer.
The display indicates Tray 2 even
though there is paper loaded in
the optional tray 2.
The MFP does not print after a
paper jam has been cleared.
• Make sure the paper does not
exceed the stack height indicator.
• Make sure the paper is under both
corner bucklers (see loading
paper in the User’s Reference).
• Make sure the tray is pushed all
the way in.
• Press Select.
• Press Select or open and close
the MFP cover to restart the
printer.
• Make sure the print cartridge is
installed properly.
Diagnostic information 2-53
7001–001
ProblemAction
Unexpected characters print or
characters are missing.
• Make sure you are using the
correct MFP driver.
• Select hex trace mode to
determine what the problem is.
See “Hex Trace mode” on
page 3-13 for more information.
• Restore factory defaults. See
“Factory defaults” on page 3-4
for more information.
• Make sure the network cable or
USB cable is firmly plugged in at
the back of the printer.
2-54 Service Manual
7001–001
3. Diagnostic aids
Menu descriptions
The Configuration Menu contains menus, settings and operations.
These menus are used to configure a MFP for operation. This menu
is accessed via a POR sequence.
The Diagnostics Menu contains settings and operations used while
manufacturing the printer. This menu is accessed via a POR
sequence. See “Configuration and Diagnostic Menu” on
page 3-2 for more information.
Entering the diagnostics menu
1. Press Start, Stop, and Clear buttons and start the MFP.
2. Hold the buttons down until “Performing Self Test” is displayed
on the LCD.
3. Release the buttons, and “Registration” is displayed.
Entering the configuration menu
1. Press Start and Stop buttons and start the MFP.
2. Hold the buttons down until “Performing Self Test” is displayed
on the LCD.
3. Release the buttons, and “Configuration Menu” is displayed.
Diagnostic aids 3-1
7001–001
Configuration and Diagnostic Menu
When the Configuration Menu is accessed, the following screen is
displayed:
✓
Prt Quality Pgs
Panel1 Menus
PPDS Emulation
Factory Defaults
Energy Conserve
Min Copy Memory
Exit Config Menu
When the diagnostic menu is successfully accessed, the
REGISTRATION menu appears as default.
REGISTRATION
3-2 Service Manual
7001–001
Moving around the menus
Configuration menu
To scroll around the configuration menu, use the up and down
navigation keys on the operator panel.
To select an item on the menu, scroll to the item, and press the
Select button.
Note: A check mark to the left of the menu item indicates it is active.
After a menu item has been selected, use the right and left
navigation keys to toggle between selections. To select an item,
scroll to the item, and press Select.
To exit the configuration menu, scroll to the bottom until the Exit
Configuration Menu box is highlighted with a solid black line. Press
Select. The machine performs a POR.
Diagnostic menu
To navigate menu items in the diagnostic menu, use the left and right
navigation keys on the operator panel. Press the Select button for
the desired menu item. A submenu is presented with more choices.
Use the left and right navigation keys to navigate the submenu.
To exit a submenu, press the up navigation key.
To exit diagnostics, use the up navigation key to scroll to the top le v el
of the diagnostics menu. Use the right navigation key to scroll to
EXIT DIAGNOSTICS. Press Select. The machine performs a POR.
Diagnostic aids 3-3
7001–001
Configuration Menu Settings
The Print Quality Pages menu is used to check print quality. Three
test pages are presented for inspecting print quality.
Panel Menus
The Configuration menu is used to change MFP settings. It enables
or disables user access to the panel menus. Disab ling Panel Menus
keeps users from altering settings via the operator panel. This panel
is used by the administrator.
PPDS emulation
The Configuration menu activates and deactivates PPDS emulation.
Factory defaults
Sets the MFP parameters to the factory settings.
To restore factory defaults:
1. POR the machine into Configuration Mode. See “Entering the
configuration menu” on page 3-1 for more information.
2. Use the down navigation button to scroll to the RESTORE
FACTORY DEFAULTS item on the menu.
3. Press Select. The machine performs a POR.
4. The RESTORE FACTOR Y DEFAULTS sets the MFP non critical
parameters back to the factory settings.
Note: Some settings are not affected: panel language, energy
conserve, paper prompts, registration margins, and page count.
3-4 Service Manual
7001–001
Energy conserve
Adjusts the settings on the power saver menu.
Minimum copy memory
Selects the minimum amount of memory to allocate for copy jobs.
Note: The memory available is always less than or equal to the
amount of installed memory.
Format fax flash
Formats flash memory for fax jobs.
Paper prompts
Sets the source to feed paper for media and sizes not already
assigned to input sources.
Note: Choices are: auto, multipurpose feeder, and manual paper.
• Auto mode, the source defaults to where the print job is
allocated to.
Note: Default media type & size is changed to the specific job
media type & size once prompted to load media.
• Multipurpose feeder mode, the user is prompted to load media
in the feeder.
Note: Default media type & size is changed to the specific job
media type & size once prompted to load media.
• Manual paper mode, the user is prompted to load media in the
feeder.
Diagnostic aids 3-5
7001–001
Envelope prompts
Same as paper prompts, but applies only to envelopes.
Print error log
Printed error log.
Note:
– Debug and secondary 900 error codes are included in the
error log report available in the Diagnostic Mode.
– Debug and secondary 900 error codes are not included in
this error log printout (since the configuration mode may be
accessed by an end user).
Diagnostic mode menu settings
Registration
Sets the top, bottom, left and right registration margins for the print
engine. The numeric value f or each setting is measured in 1/600th of
an inch. The MFP registration process is described in Chapter 4.
See “Printhead registration adjustment” on page 4-4 for more
information.
Print tests
Perf ormed to verify the MFP can print from each of the installed print
sources. Print Quality pages can also be printed when using this
test.
Scanner tests
Includes the following tests and functions:
Calibration - Performs a baseline gray scale calibration of the CCD
assembly within the scanner. This function is performed
automatically upon exit of Diagnostic Mode at next POR. No
insertion of paper is required as the calibration uses a white
reference strip inside of the scanner housing.
3-6 Service Manual
7001–001
Registration - Performs scanner margin adjustments for ADF and
flatbed. Registration can be adjusted automatically or manually.
Manual mode is somewhat difficult; automatic mode is
recommended. Automatic mode finds the top and left edge of paper
from a sample scan and calculates right and bottom margins
settings. A special sheet of colored paper is required for successful
registration of the ADF. This special media is available as a FRU as
well as included with FRUs requiring registration adjustment upon
replacement. The scanner registration process is described in
Chapter 4. See “Scanner registration” on page 4-5 for more
information.
Feed Tests - Verifies the ADF feeds paper and measures the page
length for specific paper sizes. This test is also used to scan the
entire length of the flatbed.
Note: By indicating paper size, paper length should be within a
specific range (which is used for determining paper jams when
out of range).
While performing the feed test:
• When paper is detected in the ADF, the paper is fed through
the ADF for the ADF portion of the feed test.
• When paper is not detected in the ADF, the flatbed CCD
carriage traverses the entire length of the flatbed repeatedly.
Pressing Select or Stop cancels the feed test.
Note: The number of pages through the flatbed and ADF that
passed or failed is displayed at the end of the test.
Sensor test
Allows manual inspection of the following sensors:
• ADF paper present sensor
• ADF paper path sensor
• ADF cover open sensor
• Flatbed cover open sensor
• CCD home position sensor
Diagnostic aids 3-7
7001–001
ASIC test
Checks the scanner ASIC memory.
Hardware Tests
Panel test
Performs a series of LCD and button tests on the operator panel.
DRAM test
Checks the DRAM memory (both soldered down and optional
DRAM).
Duplex tests
Duplex quick test
Checks that the back side duplex top margin setting is correct. A
duplexed version of the quick test page is printed (the back side can
be used in adjusting the duplex top margin).
Duplex top margin
Allows adjustment of the back side top margin.
Input tray test
Observes the paper path while media is fed through from various
input sources.
Notes:
• The lower front door can be opened during this test to observe
the paper path.
• The upper front door cannot be opened during this test as it
supports the charge roll.
3-8 Service Manual
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