Lexmark 4402-X73 Parts Breakdown
Lexmark X73 Scan/Print/Copy
• Table of Contents
• Start Diagnostics
• Safety and Notices
• Trademarks
4402-001
•Index
Lexmark and Lexmark with diamond
design are trademarks of Lexmark
International, Inc., registered in the
United States and/or other countries.
4402-001
Edition: September 2002
The following paragraph does not apply to any country where such provisions are
inconsiste nt with local law: LEXMARK INTERNATIONAL, INC. PROV IDES THIS
PUBLICATION “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRE SS 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.
Lexmark is a trademark of Lexmark International, Inc., registered in the United States
and/or other countries.
Other trademarks are the property of their respective owners.
© Copyright Lexmark International, Inc. 2001, 2002.
All rights reserved.
UNITED STA TES GOVERNMENT RESTRICTED RIGHTS
This software and documentation are provided with RESTRICTED RIGHTS. Use,
duplication or disclosure by the Government is subject to restrictions as set forth in
subparagraph (c)(1)(ii) of the Rights in Technical Data and Computer Software clause at
DF ARS 252.227-7013 and in applicable FAR provisions: Lexmark International, Inc.,
Lexington, KY 40550.
U.S.A. P/N: 12G3798
4402-001
Table of Contents
Safety Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .v
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .x
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Power Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Scanner Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Operator Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Maintenance Approach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Diagnostic Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Power-On Self Test (POST) Sequence . . . . . . . . . . . . . . . . . . . . 2-1
POST Symptom Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Symptom Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Service Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Carrier Transport Service Check . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
CCD Module Assembly Service Check . . . . . . . . . . . . . . . . . . . . 2-8
Gear Train Assembly Service Check . . . . . . . . . . . . . . . . . . . . . . 2-9
Maintenance Station Service Check . . . . . . . . . . . . . . . . . . . . . 2-10
Paper Feed Service Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Paper Path Service Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Power Service Ch eck. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
Print Quality Service Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
Scan/Copy Quality Service Check . . . . . . . . . . . . . . . . . . . . . . . 2-17
Diagnostic Aids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Test Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Repair Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Handling ESD-Sensitive Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
iii
4402-001
Removal Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
Releasing Plastic Latches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
Scanner Lid Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
Rear Cover Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
Operator Panel Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4
Top Housing Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . .4-4
Paper Support Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4
CCD Module Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . .4-5
Gear Train Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6
Access Cover Sensor Removal. . . . . . . . . . . . . . . . . . . . . . . . . . .4-6
Right Cover Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-7
Access Cover Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-7
Left Cover Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-8
Middle Frame Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-9
Print Engine Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-11
ASF Module Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-12
System Board Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-12
Carrier Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-13
Encoder Strip Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-13
Maintenance Station Removal . . . . . . . . . . . . . . . . . . . . . . . . . .4-14
Belt/Idler Pulley Assembly (Print Engine) Removal. . . . . . . . . . .4-14
Connector Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
Lubrication Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
Parts Catalog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
Assembly 1: Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-2
Assembly 2: Paper Feed, Frame and Carrier Transport . . . . . . . . . .7-6
Assembly 3: Electronics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-8
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-1
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4402-001
Safety Information
• This product is designed, tested and approved to meet strict
global safety standards with the use of specific Lexmark
components. The safety features of some parts may not always
be obvious. Lexmark is not responsible for the use of other
replacement parts.
• The maintenance information for this product has been
prepared for use by a professional service person and is not
intended to be used by others.
• There may be an increased risk of electric shock and personal
injury during disassembly and servicing of this product.
Professional service personnel should understand this and take
necessar y pr ec autions.
Consignes de Sécurité
• Ce produit a été conçu, testé et approuvé pour respecter les
normes strictes de sécurité globale lors de l'utilisation d e
composants Lexmark sp écifiques. Les caractéristiques de
sécurité de certains éléments ne sont pas toujours évidentes.
Lexmark ne peut être tenu responsable de l'utilisation d'autres
pièces de rechange.
• Les consignes d'entretien et de réparation de ce produit
s'adressent uniquement à un personnel de maintenance
qualifié.
• Le démontage et l'entretien de ce produit pouvant présenter
certains risques électriques, le personnel d'entretien qualifié
devra prendre toutes les précautions nécessaires.
Safety Information v
4402-001
Norme di sicurezza
• Il prodotto è stato progettato, testato e approvato in conformità a
severi standard di sicurezza e per l’utilizzo con componenti
Lexmark specifici. Le caratteristiche di sicurezza di alcune parti
non sempre sono di immediata comprensione. Lexmark non è
responsabile per l’utilizzo di parti di ricambio di altri produttori.
• Le informazioni riguardanti la manutenzione di questo prodotto
sono indirizzate soltanto al personale di assistenza autorizzato.
• Durante lo smontaggio e la manutenzione di questo prodotto, il
rischio di subire scosse elettriche e danni alla persona è più
elevato. Il personale di assistenza autorizzato, deve, quindi,
adottare le precauzioni necessarie.
Sicherheitshinweise
• Dieses Produkt und die zugehörigen Komponenten wurden
entworfen und getestet, um beim Einsatz die weltweit gültigen
Sicherheitsanforderungen zu erfüllen. Die sicherheitsrelevanten
Funktionen der Bauteile und Optionen sind nicht immer
offensichtlich. Sofern Teile eingesetzt werden, die nicht von
Lexmark sind, wird von Lexmark keinerlei Verantwortung oder
Haftung für dieses Produkt übernommen.
• Die Wartungsinformationen für dieses Produkt sind
ausschließlich für die Verwendung durch einen
Wartungsfachmann bestimmt.
• Während des Auseinandernehmens und der Wartung des
Geräts besteht ein zusätzliches Risiko eines elektrischen
Schlags und körperlicher Verletzung. Das zuständige
Fachpersonal sollte entsprechende V orsichtsmaßnahmen
treffen.
vi Service Manual
4402-001
Pautas de Seguridad
• Este producto se ha diseñado, verificado y aprobado para
cumplir los más estrictos estándares de seguridad global
usando los componentes específicos de Lexmark. Puede que
las características de seguridad de algunas piezas no sean
siempre evidentes. Lexmark no se hace responsable del uso de
otras piezas de recambio.
• La información sobre el mantenimiento de este producto está
dirigida exclusivamente al personal cualificado de
mantenimiento.
• Existe mayor riesgo de descarga eléctrica y de daños
personales durante el desmontaje y la reparación de la
máquina. El personal cualificado debe ser consciente de este
peligro y tomar las precauciones necesarias.
Informações de Segurança
• Este produto foi concebido, testado e aprovado para satisfazer
os padrões globais de segurança na utilização de componentes
específicos da Lexmark. As funções de segurança de alguns
dos componentes podem não ser sempre óbvias. A Lexmark
não é responsável pela utiliza ção de outros componentes de
substituição.
• As informações de segurança relativas a este produto
destinam-se a profissio nai s 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.
Safety Information vii
4402-001
Informació de Seguretat
• Aquest producte està dissenyat, comprovat i aprovat per tal
d'acomplir les estrictes normes de seguretat globals amb la
utililització de components específics de Lexmark. Les
característiques de seguretat d'algunes peces pot ser que no
sempre siguin òbvies. Lexmark no es responsabilitza de l'us
d'altres peces de recanvi.
• La informació pel manteniment d’aquest producte està
orientada exclusivament a professionals i no està destinada a
ningú que no ho sigui.
• El risc de xoc elèctric i de danys personals pot augmentar
durant el procés de desmuntatge i de serv e i d’aquest producte.
El personal professional ha d’estar-ne assabentat i prendre les
mesures convenients.
viii Service Manual
4402-001
Safety Information ix
4402-001
Preface
This manual describes the Lexmark X73 Scan/Print/Copy (4402-
001) and contains maintenance procedures for service personnel
only. It is divided into the following chapters:
1. General Information contains a general description of the
printer and the maintenance approach used to repair it. Special
tools and test equipment are listed in this chapter, 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 scanner/printer/copier problems.
4. Repair Information provides instructions for making printer
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.
x Service Manual
4402-001
1. General Information
The Lexmark X73 machine is an electro-mechanical scanner,
printer, and copier that creates characters and graphics by
composing programmed patterns of ink dots using a printhead and
liquid ink. The printhead uses small heater plates and nozzles to
control ink flow and the formation of characters on the print media.
The printhead assembly and ink supply are combined into a singleunit, print cartridge available as a customer replaceable supply item.
Dual printheads provide color and true black printing without
changing printheads. The number and size of inkjets or nozzles, in
the printhead, determines the overall quality and capability of the
printer. The black cartridge has a total of 208 nozzles and installs on
the right. The color cartridge has a total of 192 nozzles and installs
on the left. The printer is capable of printing in two directions from
either cartridge.
Power Consumption
• <6 Watts - power off and power to the printer
• 8 Watts - Idle Mode (power on - not printing)
• 21 Watts - Printing (average)
• 31 Watts - Printing (peak)
General Information 1-1
4402-001
Scanner Specifications
Scanner Type Flatbed, CCD
Scan Modes True Color:
48 Bit Internal (68.7 Billion Colors)
24 Bit External (16.7 Million Colors)
Gray Mode:
12 Bits Internal (4,096 Shades
of Gray)
8 Bits External (256 Shades of Gray)
Te xt/L ine Art:
1 Bit Per Pixel
Scan Method One Pass Scanning
Scan Area 8.5 X 11.7 inches
216 X 292 mm
Scan Resolution Optical: 600 dpi (H) X 1200 dpi (V)
Interpolated: 9600 X 9600
1-2 Service Manual
4402-001
Operator Panel
Press this
button:
Setup Adjust your copy and scan settings using the Scan &
Color Copy Make a color copy.
Black Copy Make a black and white copy.
Scan Press the scan button after selecting a Scan To
Scan To Select a scan destination, such as To copy, To and e-
Scan To E-mail Scan an image or document and send with an e-mail
Scan To Fax Scan an image or document and send as a fax.
Paper Feed Load or eject a sheet of paper from the printer.
Power Tur n the printer on or off.
When you want to:
Copy Control Progr am on your computer.
destination.
mail, To an application, To a file, or To fax.
message.
General Information 1-3
4402-001
Maintenance Approach
The diagnostic information in this manual leads you to the correct
field replaceable unit (FRU) or part. Use the symptom index, service
checks, and diagnostic aids to determine the symptom and repair
the failure.
After you complete the repair, perform tests as needed to verify the
repair.
Abbreviations
B/M Bill of Material
CCD Charged Coupled Device
EOF End of Form
ESD Electrostatic Discharge
FPC Flat Printhead Cable
FRU Field Replac eable Unit
HVPS High Voltage Power Supply
LVPS Low Voltage Power Supply
OEM Original Equipment Manufacturer
V ac Volts alternating current
V dc Volts direct current
ZIF Zero Insertion Force
1-4 Service Manual
4402-001
2. Diagnostic Information
Start
Use the symptom tables, service checks, and diagnostic aids in
chapter three, to determine the printer failure.
Power-On Self Test (POST) Sequence
Press the power button to turn machine on.
• Power light turns on.
• The paper feed motor runs then stops.
• Status light stays on for a second and turns off.
• The carrier moves to the left then returns to the right stopping at
the maintenance station.
• Power light stays on.
If your printer completes POST with no errors, go to the “Symptom
Tables” on page 2-3, locate the symptom and take the indicated
action.
If your printer does not complete POST, locate the symptom in the
following table and take the indicated action.
Diagnostic Information 2-1
4402-001
POST Symptom Table
Symptom Action
No Power or
Status lights and
no motors run.
Paper f ee d
gears do not
turn
Carrier does not
move
Carrier slams
side frame
CCD does not
move
CCD lamp does
not turn on
Go to the “Power Service Check” on page 2-14. If okay,
go to the “Operator Panel Problems” on page 2-3.
Go to the “Pa per Feed Service C heck” on page 2-11.
Go to the “Carrier Transport Service Check” on
page 2-6.
Go to the “Carrier Transport Service Check” on
page 2-6.
Go to the “Gear Train Assembly Service Check” on
page 2-9.
Go to the “CCD Module Assembly Service Check” on
page 2-8.
2-2 Service Manual
4402-001
Symptom Tables
Locate the symptom in the following tables and take the appropriate
action.
Carrier Transport Problems
Symptom Action
• No carrier movement
• Slow carrier movement
• Carrier stops
• Carrier slams side frame
Go to the “Carrier Tr ansport
Service Check” on page 2-6.
Maintenance Station Problems
Symptom Action
Maintenance station:
• Fails to cap the printheads
• Fails to clean the printheads
Go to the “Maintenance Station
Service Check” on page 2-10.
Operator Panel Problems
Symptom Action
• Buttons do not work
• Power or status lights do not
work
Check operator panel cable
connection at J6 on the system
board. Then run the “Power-On Self
Test (POST) Sequence” on
page 2-1. If op erator panel fails,
replace the ope rator panel a ssembly.
If the problem sti ll e xists , rep lace the
system board. Go to the “System
Board Removal” on page 4-12.
Note: If any buttons or lights fail,
check connection J6. If the problem
remains, replace the operator panel
assembly. Go to the “Operator
Panel Removal” on page 4-4.
Diagnostic Information 2-3
4402-001
Printer Communication Table
Symptom Action
• Not able to print Test Page Check the USB cable and system
board cable connections. If okay,
replace system board. Go to the
“System Board Removal” on
page 4-12.
Scanner Problems
Symptom Action
• CCD does not move
• Lamp does not lig ht
• Scanned images are faded, or
colors are dull, blurry or fuzzy.
Images are slanted or crooked
and the straight lines in the
image appear to be jagged or
uneven.
• Blank copies.
Go to the “CCD Module Assembly
Service Check” on page 2-8.
Go to the “Gear Train Assembly
Service Check” on page 2-9.
Go to the “Scan/Copy Quality
Service Check” on page 2-17.
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4402-001
Paper Feed Problems
Symptom Action
• Fails to pick paper
• Picks more than one sheet of
paper
• Picks paper but fails to feed
• Paper jams
• Paper fails to exit
• Noisy paper feed
Envelopes fail to feed Go to the “Paper Feed Service
Paper sk e ws Go to the “Paper Path Service
Go to the “Paper Feed Service
Check” on page 2-11.
Check” on page 2-11.
Check” on page 2-13.
Power Problems
Symptom Action
No power in machine, motors do
not operate
Go to the “Power Servi ce Ch eck”
on page 2-14.
Print Quality Problems
Symptom Action
• Voids in characters
• Light print
• Prints off the page
• Fuzzy print
• Carrier moves but no print
• Printhead dries prematurely
• Colors print inco rrec tly
• Vertical alignment off
Go to the “Print Quality Service
Check” on page 2-15.
• Ink smearing
• Vertical streaks on paper
• Print lines crowded
Go to the “Paper Feed Service
Check” on page 2-11.
Diagnostic Information 2-5
4402-001
Service Checks
Carrier Transport Service Check
FRU Action
1 System Board
Carrier Transport
Motor
2 Carrier Transport
Motor
Check the transport carrier motor connector J4. If
connected, check for approximately 28 volts on
pins 1 and 2 or at the wire connections located on
the rear of the transport carrier motor. If voltage is
incorrect, replace the system board. If voltage is
correct, check the motor for shorts.
Check the motor for binds, or loose motor pulley.
A noisy or chattering motor or a motor that fails to
turn can be caused by:
• An open or short in the motor.
• An open or short in the motor driver
on the system board.
• A bind in the carrier transport
mechanism.
With the carrier transport motor cable (J4)
disconnected from the system board, check for 0
to 10 ohms between the following pins on the
motor:
J4-1 and J4-2
If the readings are incorrect, replace the print
engine. Go to the “Print Engine Removal” on
page 4-11.
3 Carrier Guide Rod Clean the carr ier rod.
Note: Lubrica te the rod an d the carrier rod bea ring
surfaces with grease P/N 99A0394.
2-6 Service Manual
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