Lexmark X125 Series Service Manual
Lexmark X125
• Table of Contents
• Start Diagnostics
• Safety and Notices
All-In-One
4412-00X
• 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.
4412-00X
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 02 .
All rights reserved.
UNITED STATES GOVERNMENT RESTRICTED RIGHTS
This software and documentation are provided with RESTRICTED RIGHTS. Use,
duplication or disclosure by the Government is subject to restrictions as set forth in
subparagraph (c)(1)(ii) of the Rights in Technical Data and Computer Software clause at
DFARS 252.227- 7013 and in applicable FAR pro visions: Lexmark International, Inc.,
Lexington, KY 40550.
P/N 12G9185
4412-00X
Table of Contents
Safety Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .v
Preface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .x
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Printer Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Printhead. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Facsimile. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Scanner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Power and Size. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Diagnostic Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Power-On Self Test (POST) Sequence . . . . . . . . . . . . . . . . . 2-1
POST Symptom Tabl e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Symptom Tables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Service Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Carrier Transport Service Check. . . . . . . . . . . . . . . . . . . . . . . 2-7
CIS Assembly Service Check . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Scanner Motor with Gear Assembly Service Check. . . . . . . 2-10
Maintenance Station Service Check. . . . . . . . . . . . . . . . . . . 2 -11
Paper Feed Service Check. . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
Paper Path Servi c e Check . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
Power Service Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
Print Quality Service Check . . . . . . . . . . . . . . . . . . . . . . . . . 2 -16
Scan/Copy Quality Service Check . . . . . . . . . . . . . . . . . . . . 2 -18
Fax/Telephone Commu nication Service Check . . . . . . . . . . 2-19
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
Repair Informatio n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Handling ESD-Sensitive Parts . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Removal Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
iii
4412-001
Releasing Plastic Latches . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
Removals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
General Precautions on Removals. . . . . . . . . . . . . . . . . . . . . .4-3
CIS White Roller Assembly Removal. . . . . . . . . . . . . . . . . . . .4-4
Top Cover Assembly Removal. . . . . . . . . . . . . . . . . . . . . . . . .4-5
Rollers (Drive Feed Roller Assembly, Exit Shaft) Removal . . .4-6
CIS (Contact Image Sensor) Removal. . . . . . . . . . . . . . . . . . .4-7
Scanner Motor with Gear Assembly Removal . . . . . . . . . . . . .4-9
Power Supply Remo va l . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-11
Line Interface Board Removal . . . . . . . . . . . . . . . . . . . . . . . .4-12
Operator Panel Assembly Removal . . . . . . . . . . . . . . . . . . . .4-13
Printer Unit Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-14
ASF Assembly Rem ov al. . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-15
Maintenance Station Removal . . . . . . . . . . . . . . . . . . . . . . . .4-17
Carrier Assembly with Belt Removal . . . . . . . . . . . . . . . . . . .4-18
System Board Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-19
Mid Frame Assembly with Exit Rollers Removal . . . . . . . . . .4-20
Large Feed Roller Assembly with Gear Removal . . . . . . . . .4-21
Paper Feed Motor Assembly with Gears Removal . . . . . . . .4-22
Carrier Transport Motor Removal. . . . . . . . . . . . . . . . . . . . . .4-23
Connector Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
System Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
Line Interface Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3
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
4412-00X
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.
Consignes de Sécurité
• 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.
Safety Information v
4412-00X
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.
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.
vi Service Manual
4412-00X
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.
Informações de Segurança
• 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.
Safety Information vii
4412-00X
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.
viii Service Manual
4412-00X
Safe ty In formation ix
4412-00X
Preface
This manual and 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 Ca talog contains illustrations and part numbers for
individual FRUs.
x Service Manual
4412-00X
1. Gen e r a l Informa tion
The Lexmark™ X125 All-In-One (4412-00X) is a letter quality print,
fax, copy, and scan machine. 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 cartridge has
a total of 192 nozzles and installs on the left. The printer is capable
of printing in both directions from either cartridge.
General Information 1-1
4412-00X
Specifications
Printer Engine
Technology Thermal Inkjet
2-pin and printhead swapping
type
Spee d Col or 8 ppm at Draf t M o de
Mono 16 ppm at Draft Mode
Resolution Color 600 X 600 dpi (1200 X 2400
Mono 600 X 600 dpi (1200 X 2400
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
dpi addressable)
dpi addressable)
(Max 10 mm)
2000/Windows XP
Printhead
Babbage Mono St andard Birch Color
Printhead 208 nozzles 192 nozzles
Ink Type Pigment Dye
Ink Color Black Color
Ink Yield About 600 sheets About 200 sheets
1-2 Service Manual
4412-00X
Facsimile
General Compatibility ITU-G3
Scan Method CIS
Scan Width Maximum 216 mm, Effective 210 mm
Scan Resolutio n 600 X 1200 dpi
Scan Speed 6 seconds
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
Coding Method MH, MR, MMR, Error Correction Mode
LCD 2 lines of 16 characters each
Scanning Resolution and
Type
Contrast Darkest/Darken/Normal
Memory Capacity 1 Mbyte
Back-up Time 15 sec (Continuous power failure,
Confidential No
F orced Me mory TX Yes
Memory RX Automatic reception when paper empty.
Standard: 200 X 100 dpi
Fine: 200 X 200 dpi (default)
Super Fine: 300 X 300 dpi
Color: 200 X 200 dpi
(Standard: Low quality, Fine: High
quality compression)
Lighten/Lightest
typicall y 1-2 minutes)
General Information 1-3
4412-00X
Telephone Speed Dial 70 locations
Chain Dial No
On-Hook Dial Yes, 1-Key
Last Number Redial Yes, 1-Key
Auto Redial Yes
Hold and Mute No
Pause Yes, use Redial Key
Ringer Volume S/W Option Setting (4 steps)
Tone/Pulse Select S/W Option Setting
DRPD USA: Yes, Other Countries: Yes
Report and
List
Copy Multipage Copy Up to 99 pages
Telephone
I/F
Others Sensors Paper Jam
TX/RX Journal Yes
Image TCR Yes, reduction of first page sen t by
Memory TX
System Data Yes
Telephone Number
List
Self Test Yes
Grayscale 256 levels
Reduction and
Enlargement
Answering I/ F Yes
Extension Phone 1-jack, extension phone transfer
Real-Time Clock No
RTI Yes
Yes
25% - 200%
(Reference is the top center of
document.)
1-4 Service Manual
4412-00X
Scanner
Compatibility TWAIN
Technology Platen CIS
Light Source for Col or CIS RGB LEDs (Line Order Control)
Power and Size
Power Source 110V-240V / 50Hz-60Hz
Dimensions 440.6 X 319.6 X 205.4 mm
Weight (Packed) 15.3 lbs (Packed Weight)
Abbreviations
ASF Auto Sheet Feed
B/M Bill of Material
CIS Contact Image Sensor
EOF E nd of Form
ESD Electrostatic Discharg e
FPC Flat Printhead Cable
FRU Field Replaceable Unit
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 I nsertion Force
General Information 1-5
4412-00X
1-6 Service Manual
4412-00X
2. Diagnostic Information
Start
Power-On Self Test (POST) Sequence
1. Power Up Please Wait is displayed on the LCD.
2. Carrier moves to the left and the paper feed motor runs then
stops.
3. Carrier returns to the right.
4. Ready , ANS/F AX, and the Date and Time display when POST is
complete.
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
4412-00X
POST Symp tom Table
Symptom Action
LCD or operator
panel but tons 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 2-15. If okay,
go to the “Operator Panel Problems” on page 2-3.
Go to the “Paper Feed Service Check” on page 2-12.
Go to the “Carrier Transport Service Check” on
page 2-7.
Go to the “Carrier Transport Service Check” on
page 2-7.
Go to the “CIS Assembly Service Check” on page 2-9.
2-2 Service Manual
4412-00X
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 Tra nsport
Service Check” on page 2-7.
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 2-11.
Operator Panel Problems
Symptom Action
• Buttons do not work
• LCD does not display
Check operator panel cable
connection at P9 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 P9. If the problem
remains, re place the operator panel
assembly. Go to the “Operator
Panel Assembly Removal ” on
page 4-13.
If the pr oblem still exists, repl ace the
system board. Go to the “System
Board Removal” on page 4-19.
Diagnostic Information 2-3
4412-00X
Symptom Action
Document scan sensor does not
detect document
Check operator panel cable
connector P9 on the syst em board. If
okay, go to the “Scanner Motor
with Gear Assembl y Service
Check” on page 2-10. If the
scanner motor is working correctly,
replace the operator panel assembly .
Go to the “Operator Panel
Assembly Removal” on page 4-13.
2-4 Service Manual
4412-00X
Printer Communication Problem
Symptom Action
Not able to prin t Self Test Page Check the USB cable and system
board cab le connections. If okay,
replace system board. Go to the
“System Board Removal” on
page 4-19.
Scanner Problems
Symptom Action
Light does not turn on Go to the “CIS Assembly Service
Check” on page 2-9.
• 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 2-18.
Go to the “Scanner Motor wit h
Gear Assembly Service Check”
on page 2-10.
Go to the “Operator Panel
Problems” on page 2-3.
Go to the “Paper Path Service
Check” on page 2-14.
Diagnostic Information 2-5
4412-00X
Paper Feed Problems
Symptom Action
• Fails to pic k paper
• Picks more than one sheet of
paper
• Picks paper but fai ls to feed
• Paper jams
• Paper fails to exit
• Noisy paper feed
Envelopes fail to feed Go to the “Paper Feed Service
Paper sk ews Go to the “Pap e r Path Servic e
Go to the “Paper Feed Service
Check” on page 2-12.
Check” on page 2-12.
Check” on page 2-14.
Power Probl em s
Symptom Action
No power in machine, motors do
not operate
Go to the “Power Service Check”
on page 2-15.
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
• Vertical alignment off
Go to the “Print Quality Service
Check” on page 2-16.
• Ink smearing
• Vertical streaks on paper
• Print lines crowded
2-6 Service Manual
Go to the “Paper Feed Service
Check” on page 2-12.
4412-00X
Servi ce C he cks
Carrier Transport Service Check
FRU Action
1 System Board
Carrier Transport
Motor
2 Carrier Transport
Motor
Check the carri er transport motor connecto r P4. If
connected, check for approximately 29 volts on
pins 1 and 2 or at the wire connect ions located on
the rear of the carrie r tr ansport motor . If voltage is
incorrect, replace the system board. If voltage is
correct , check the mot or for shorts.
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 tr ansport motor cable (P4)
disconnected from the system board, check for 0
to 16 ohms between the following pins on the
motor:
P4-1 and P4-2
If the readings are i ncorrect, replace the print
engine. Go to the “Carrier Transport Motor
Removal” on page 4-23.
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.
Diagnostic Information 2-7
4412-00X
FRU Action
4 Encoder Strip
Carrier Assembly
with Belt
5 Carrier Transport
Belt
Idler Pulley
Assembly
6 Maintenance
Station
7 Access Door
Sensor
Check the encoder strip for proper installation.
Also, check it for wear, dirt, and grease. Replac e if
needed.
Be sure all printhead connectors are fully seated.
Check the cables for damage .
If the encoder strip and all connections are okay,
but the carrie r st ill slams the side fram e, replace
the carrier assembly with belt. Go to the “Carrier
Assembly with Belt Removal” on page 4-18. If
problem remains, r eplace the system board. Go to
the “System Boar d Remo val” on page 4-19.
Check for worn, loose or broken parts. Check for
obstructions b locking carrier movement. If pulley
assembly is damaged, replace.
Lubricate carrier to carrier fr ame enga gement with
grease P/N 99A0394.
A problem with the maint enance st at ion can cau se
carrier mov ement prob lem s at th e right margin. Go
to the “Maintenance Station Remo val” on
page 4-17.
If the carrier does not mo ve toward t he cartridge
load position when the access door is opened,
verify that power is on. If the carrier sti ll does not
move, check connector P11 pin 1 for
approximately 3 volts, with the door open. If the
voltage is corr ect, replace the sensor. Disconnect
P11 from the system board before remo ving
sensor. If the voltage is incorrect, replace the
system board. Go to the “System Board
Removal” on page 4-19.
2-8 Service Manual
4412-00X
CIS Assembly Service Check
The CIS lamp does not light when scanning is in process.
FRU Action
1 CIS Assembl y If light does not come on duri ng the
scanning process, check connector
P2 on the system board. I f th e
connection is okay, check for a
voltage reading of approximately 4
volts from ground to P2-2 pin. If
voltage is correct, replace the CIS
assembly. Go to the “CIS (Contact
Image Sensor) Remo val” on
page 4-7. If voltage is incorrect,
replace the syst em board. Go to the
“System Board Removal” on
page 4-19.
Diagnostic Information 2-9
4412-00X
Scanner Motor with Gear Assembly Service Check
Motor will no t run.
FRU Action
1 Scanner Motor with Gear
Assembly
Check scanner motor for shorts.
Disconnect connector P6 from the
system board and check for
approximately 6 ohms between the
follow ing pins on th e mo tor
connector.
P6-1 and P6-2
If the ohms reading is incorrect,
replace the sca nner motor asse mbly.
If the motor does not come on during
the scanning process, check
connector P6 on the syst em board. If
the connection is okay, check for
voltage rea ding of approxim ately 29
volts at pins
P6-1
P6-2
P6-3
P6-4
If voltag e is cor rect, replace the
scanner motor with gear assembly.
Go to the “Scanne r M o to r w ith
Gear Assembly Removal” on
page 4-9. If voltage is incorrect,
replace the system board. Go to the
“System Board Removal” on
page 4-19.
2 Document Scanner Sens or To check the document scann er
sensor, insert a sheet of paper or
press the sensor to see if the
scanner motor is working. Go to
“Operator Panel Problems” on
page 2-3.
2-10 Service Manual
4412-00X
Maintenance Station Service Check
The maintenance station has three functions:
1. Wipes the printhead nozzles to clean them of dir t .
2. Provides a place for printheads to fire all nozzles, keeping them
clear prior to printing.
3. Seals the printhead when it is not being used to prevent the
nozzles from drying.
FRU Action
1 Maintenance
Station Assembl y
As the carrier moves to the right over the
maintenance station, a slot on the bottom of the
carrier engages a tab on the sled of the
maintenance station causing the cap t o rise and
seal the printhead. Carri er movement to the left
uncaps the printhead. The wiper cleans the
printhead nozzles as the carrier leaves the
maintenance station. The wiper cleans the
printhead only when the carrier is moving to the
left. Do not wipe the printhead nozzles when the
carrier is moving to the right. After the cleaning
operation is complete, a tab on the maintenance
station engage s a tab on the carrier, causing the
wiper to lower.
Check the maintenance station for worn or broke n
parts. Replace if nee ded. Go t o the “Maintenance
Station Removal” on page 4-17.
Worn wipers cause deg raded print quality just after
a maintenance cleaning. Check for loose or worn
wipers.
Worn caps cause the printhead nozzles to dry and
clog. Check for loose or worn caps .
Diagnostic Information 2-11
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