Lexmark 4200 Series Service Manual
Lexmark 4200 Series
• Table of Contents
• Start Diagnostics
• Safety and Notices
All-In-One
4413-XXX
• Trademarks
•Index
Lexmark and Lexmark with diamond
design are trademark s of Lexmark
International, Inc., registered in the
United States and/or ot her countries.
4413-XXX
Edition: March 24, 2006
The following paragraph does not apply to any country where such provisions are
inconsistent with local law: LEXMARK IN TERNATIONAL, 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 all o w di sc la im er o f e x pres s o r i mpl i ed wa rr an tie s i n c ertai n t ra ns act ion s; t he refore, t hi s
statement may not apply to you.
This publication could include technical inaccuracies or typographical errors. Changes are
periodically made to the info rmation 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 Le xmark International, Inc., De partment 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 appropriat e withou t incurring any obligation
to yo u.
Lexmark and Lexmark with diamond desi gn are tr ademarks of Lexmark Inte rnationa l,
Inc. , registered in the Unit ed States and/or other countries.
Other trademarks are the property of their r espective owners.
© Copyright Lexma rk Inte r na tion al, Inc. 20 04 .
All rights reserved.
UNITED STATES GOVERNMENT RIGHTS
This software and any accompanying documentation provided under this agreement are
commercial computer sof tware and documentati on developed exclusivel y at private
expanse.
USA P/N 12G9334
Japanese P/N 12G9335
4413-XXX
Table of Contents
Safety information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
Preface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. x
General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Print engine. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Printhead. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Facsimile. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Scanner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Power and size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Diagnostic information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Power-On Self Test (POST) sequence. . . . . . . . . . . . . . . . . . 2-1
POST symptom table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Sym p tom ta b le s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Service checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Carrier transport service check. . . . . . . . . . . . . . . . . . . . . . . . 2-6
CIS assembly service check. . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Scanner motor with gear 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 check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 -14
Print quality service check. . . . . . . . . . . . . . . . . . . . . . . . . . . 2 -15
Scan/copy quality service check. . . . . . . . . . . . . . . . . . . . . . 2-17
Fax/telephone commun ication service check . . . . . . . . . . . . 2-18
Diagnostic aids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Theory of mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Scanner mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Drive feed roller assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Contact Image Sensor (CIS). . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Document sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
iii
4413-00X
Repa ir inform atio n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Handling ESD-sensitive parts . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
Removal procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
Releasing plastic latches . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
Removals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
General precautions on removals . . . . . . . . . . . . . . . . . . . . . .4-3
CIS white ro ller a s s embly remov a l. . . . . . . . . . . . . . . . . . . . . .4-4
Top cover assembly removal. . . . . . . . . . . . . . . . . . . . . . . . . .4-5
Rollers (drive feed roller assembly, exit shaft) removal . . . . . .4-6
CIS (Contact Image Sensor) removal . . . . . . . . . . . . . . . . . .4-10
Scanner motor with gear assembly removal . . . . . . . . . . . . .4-11
Control panel assembly removal . . . . . . . . . . . . . . . . . . . . . .4-13
Print engine removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-16
Maintenance station removal . . . . . . . . . . . . . . . . . . . . . . . . .4-17
Carrier assembly with belt removal . . . . . . . . . . . . . . . . . . . .4-18
System board removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-19
Exit rollers removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-20
Large feed roller assembly with gear removal . . . . . . . . . . . .4-21
Paper feed motor assembly with gears removal . . . . . . . . . .4-23
Carrier transport motor removal. . . . . . . . . . . . . . . . . . . . . . .4-24
Handset and cradle removal . . . . . . . . . . . . . . . . . . . . . . . . .4-24
Connector locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
System board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
Preventive maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
Lubrication specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
Parts catalog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
How to use this parts catalog . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-1
iv 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 par ts.
• 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 precaut ions.
• 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.
Consig n es de sécu ri té
4413-XXX
• La sécurité de ce produit repose sur des tests et des
agréations por tant sur sa conception d'origine et sur des
composants particuliers. Le fabricant n'assume aucune
responsabilité concernant la sécur ité 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 électr iqu es, 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 v
4413-XXX
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 Verantwor t ung oder Haftung für die
Sicherheit übernommen.
• Die Wartungsinformat ion en für dieses Produkt sind
ausschließlich für die Verwendung durch einen
Wartungsfachmann bestimmt.
• Während des Auseinander nehmens 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 großer Vorsicht, wenn das
Produkt für die Ausführung der Arbeiten an den
Strom angeschlossen sein muß.
vi S ervice Manual
Pautas de Seguridad
• La seguridad de este producto se basa en pruebas y
aprobaciones del diseño original y component es esp ecíficos.
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
4413-XXX
• 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 eléct rica para realizar a tarefa
necessária.
Safety i n fo rmati o n vii
4413-XXX
Informació de Se guretat
• 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 convenie n ts.
• 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.
viii Service Manual
4413-XXX
Safe ty infor mation ix
4413-XXX
Preface
This manual contains maintenance procedures for service
personnel. It is divided into the following chapters:
1. General informati on 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. D iagnostic information contains an error indicator table,
symptom tables, and service checks used to isolate failing field
replaceable units (FRUs).
3. D iagnostic aids contains tests and checks used to locate or
repeat symptoms of printer 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.
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
service r 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.
x Service Manual
4413-XXX
1. Gen e r a l informa tion
The Lexmark™ 4200 Series All-In-One (4413-XXX) is a let te r quality
print, fax, copy, and scan machine. It is a standalone color/mono
copier and fax. 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 single
unit. Print cartridges are 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 cartri dge has a total of 192 nozzles and installs
on the left. The printer is capable of printing in both directions from
either cartridge.
4250 4270
4413-K01 4413-K03
4413-AK1 (DBCS) 4413-AK3 (DBCS)
No handset Handset
General information 1-1
4413-XXX
Specifications
Print engine
Technology Thermal Inkjet
2-pin and printhead swapping
type
Speed Color 10 ppm at Draft Mode
Mono 17 ppm at Draft Mode
Resolution Color/Mono Quick Print: 300 x 600 dpi
Printing Width 203 mm
Feeding Method Automatic 100 sheets of 20 lb cut sheets
Manual Tray No
Emulation Host Based Printing (GDI)
Printer Driver Windows 98/ME, Windows
Interfac e USB Inte r face
Normal: 600 x 600 dpi
Better: 1200 x 1200 dpi
Best: 4800 x 1200 dpi for
photo paper
Best: 2400 x 1200 dpi for
other paper
(Max 10 mm)
2000/Windows XP
Printhead
Babbage Mono Standard Birch Color
Printhead 208 nozzles 192 nozzles
Ink Type Pigment Dye
Ink Color Black Color
Ink Yield About 600 sheets About 450 sheets
1-2 Service Manual
4413-XXX
Facsimile
General Scan Method CIS
Scan Width Maximum 216 mm, Minimum 76.2 mm
Feeding M ethod Sheet Fe ed
ADF 30 sheets of 20 lb
Guide Document Input Guide
Stacker Document Output Stacker/Paper
Stacker
Paper Tra y Bin Type (without Manual Tray)
Modem Spee d 33.6 K b ps
LCD 2 lines of 16 characters each
Scanning Resolution Optical Resolution : 600 dpi (H) x 1200
dpi (V)
Interpolated: 9600 dpi x 9600 dpi
Contrast Darkest/Darken/Normal
Telephone Speed Dial 79 locations
On-Hook Dial Yes
Last Number Redial Yes
Auto Redial Yes
Ringer Volume S/W Option Setting (4 steps)
Tone/Pulse Select S/W Option Setting
Report and
List
Copy Multipage Cop y Up to 99 pages
Telephone Number
List
Self Test Yes
Grayscale 256 levels
Reduction and
Enlargement
Lighten/Lightest
Yes
25% - 200%
(Reference is the top center of
document.)
General information 1-3
4413-XXX
Telephone
I/F
Others Sensors Paper Jam
Answering I/ F Yes
Extension Phone 1-jack, extension phone transfer
Clock Yes
Scanner
Compatibility TWAIN
Technology Platen CIS
Light Source for Color CIS RGB LEDs (Li ne Order Control)
Power and size
Po wer Source 100V-127V with 2-wire pow er cord fixed
Dimensions 440.6 X 319.6 X 205.4 mm
100V-127V with 2-wire separ ate power
cord (Japan)
220V-240V with 2-wire AC inlet separ ate
power cord
Energy Star Compliant (with 1 watt
regulation)
Weight (Packed) 15.3 lbs (Packed Weight)
1-4 Service Manual
4413-XXX
Abbreviations
AIO All-In-One
ASF Auto Sheet Feed
B/M Bill of Material
CIS Contact Image Sensor
EOF End of Form
ESD Electrostatic Discharg e
FPC Flat Printhead Cable
FRU Field Replaceable Unit
GDI Graphic Display Interface
HVPS High Voltage Power Supply
LCD Liquid Crystal Display
LVPS Low Vol tage P ower Supply
OEM Original Equipment Manufacturer
V ac Volts alternating current
V dc Volts direct current
ZIF Zero Insertion Force
General information 1-5
4413-XXX
1-6 Service Manual
4413-XXX
2. Diagnostic information
Start
Power-On Self Test (POST) sequence
1. Lexmark 4200 Series is displayed on the LCD.
2. Power, Fax, Copy, Scan and Auto Answer lights turn on.
3. Copy and Scan button lights turn on.
4. Carrier moves to the left and returns to the maintenance station.
The paper feed motor runs then stops.
5. Enter Fax Number is displayed.
6. Date and Time display when POST is complete.
If your printer compl e te s POST wit h error s, 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
4413-XXX
POST symptom table
Symptom Action
LCD or Control
Panel bu ttons do
not work and no
motors run
Paper feed
gears do not
turn
Carrier does not
move
Carrier slam s
side frame
CIS light does
not tu rn on
Go to the “Power service check” on page 2-14. If okay,
go to the “Control panel problems” on page 2-3.
Go to the “Paper feed service check” 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 “CIS assembly service check” on pa ge 2-8.
2-2 Service Manual
4413-XXX
Symptom tables
Locate the symptom in the following tables and take the appropriate
action.
Carrier transport problems
Symptom Action
• No c arri er movemen t
• Slow carrier movement
• Carrier stops
• Carrier slams side frame
Go to the “Carrier transport
service check” on page 2-6.
Maintenanc e s t ation 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.
Contr ol pan e l problems
Symptom Action
• Buttons do not work
• LCD does not display
Check control panel cable
connection at CN5 on the syst em
board. Run the “Power-On Self
Test (POST) sequence” on
page 2-1. If the LCD or buttons fail,
check conn ection CN5. If the
problem remain s, r epl ace th e co ntrol
panel assembly. Go to the “Control
panel assembly removal” on
page 4-13.
If the pr oblem still exists, repl ace the
system board. Go to the “System
board remo val” on page 4-19.
Diagnostic information 2-3
4413-XXX
Symptom Action
Document scan sensor does not
detect document
Check control panel cab le co nnect or
CN5 on the system board. If oka y, go
to the “Scanner motor with gear
assembly servi ce check” on
page 2-9. If the scanner motor is
working corre ctly, replace the cont ro l
panel assemb ly. Go to the “Control
panel assembly rem oval” on
page 4-13.
Printer communication problem
Symptom Action
Not able to print Self Test Page Check the USB cable and system
board cable connections. If okay,
replace system board. Go to the
“System board removal” on
page 4-19.
Phone han dse t/ c radle problem
Symptom Action
No dial tone
Handset does not work
Check all phone connections. Be
sure the main phone connection is
connected to the printer.Check pins
5 and 6 for approximately 3 volts on
connector CN11 locat ed on the
system board. If v oltage is not
correct, replace the system board.
Go to the “System board r em oval”
on page 4-19. If problem still exists,
replace the handset and cradle. Go
to “Handset and cradle removal”
on page 4-24.
2-4 Service Manual
4413-XXX
Scanner problems
Symptom Action
Light does not turn on Go to the “CIS assembly service
check” on page 2-8.
• Scanned images are faded, or
colors are dull, blurry or fuzzy.
Images are slanted or crooked
and the straigh t lines in the
image appear to be jagged or
uneven.
• Blank copies
• Scanner motor does not run
• Document sensor does not
work
• CIS white ro ll er as s em bly slips
• Paper does not feed correctly
Go to the “Scan/copy quality
service check” on page 2-17.
Go to the “Scanner motor wi th
gear assembly service check” on
page 2-9.
Go to the “Control panel
problems” on page 2-3.
Go to the “Paper path service
check” on page 2-13.
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
Go to the “Paper feed service
check” on page 2-11.
Envelopes fail to feed Go to the “Paper feed service
Paper skews Go to the “Paper p ath service
check” on page 2-11.
check” on page 2-13.
Diagnostic information 2-5
4413-XXX
Power problems
Symptom Action
No power in machine, motors do
not operate
Go to the “Power service 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 incorrectly
• V ertical al ignment off
• Ink smearing
• V ertical streaks on paper
• Print lines crowded
Go to the “Print quality service
check” on page 2-15.
Go to the “Paper feed service
check” on page 2-11.
Service checks
Carrier transport service check
FRU Action
1 System Board
Carrier Transport
Motor
2-6 Service Manual
Check the carrier transport motor connector CN3.
If connected, ch eck for approximate ly 30 volts on
pins 1 and 3 or at the wire connections located on
the rear of the carrier transport motor. If voltage is
incorrect, repl ace the system board. If v oltage is
correct, chec k the motor for shorts . If a short is
found, rep lace the motor . Go to “Ca rrier t ra nsport
moto r removal ” on page 4-24.
4413-XXX
FRU Action
2 Carrier Transport
Motor
Check the motor for binds, or loose motor pulley.
A noisy or chatteri ng m otor, or a motor that fai ls 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 (CN3)
disconnected from the system board, check for 0
to 16 ohms between the following pins on the
motor:
CN3-2 and CN3-3
If the readings are i ncorrect, replace the print
engine. Go to the “Print engi ne removal” on
page 4-16.
3 Carrier Guide Rod Clean the carrier rod.
Note: Lubricate t he rod and the carrier r od bearing
surfaces with grease P/N 99A0394.
4 Encoder Strip
Carrier Assembly
with Belt
Check the encoder strip for proper installation.
Also, check it for wear, dirt, and grease. Replace if
needed.
Be sure all printhead connectors are fully seated.
Check the cables for dama ge.
5 Carrier Transport
Belt
Idler Pulley
Assembly
If the encoder strip and all connections are okay,
but the carri er still slams the side frame, repl ace
the carrier assembly with belt. Go to the “Carrier
assembly with belt remov al” on page 4-1 8. If
problem remains, r eplace the system board. G o to
the “System board removal” on page 4-19.
Check for worn, loose or broken parts. Check for
obstructions blocking carrier movement. If pulley
assembl y is damaged, replace .
Lubricate c arrier to carrier frame engagement with
grease P/N 99A0394.
Diagnostic information 2-7
Loading...